Artigos de revistas: "Marres"

1

Radder, Hans. "Repliek aan Van Woudenberg, Buekens en Marres". Krisis 8, n.º 1 (21 de maio de 2007): 95–104. http://dx.doi.org/10.1347/kris.8.1.95.

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Souza, Iara Maria de Almeida. "A noção de ontologias múltiplas e suas consequências políticas". Ilha Revista de Antropologia 17, n.º 2 (24 de dezembro de 2015): 049. http://dx.doi.org/10.5007/2175-8034.2015v17n2p49.

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<p>http://dx.doi.org/10.5007/2175-8034.2015v17n2p49</p><p>É possível observar hoje nas ciências sociais um interesse crescente pela ontologia. Se boa parte da agenda clássica da disciplina estava situada no campo da epistemologia, centrada na noção de representação; a agenda atual em grande medida se define por uma preocupação em entender não visões de mundo, mas as realidades ou os mundos em que estamos imersos. Segundo Marres, a virada ontológica nesta disciplina compreende níveis distintos de reflexão. No primeiro nível, ontologia se refere à explicitação dos pressupostos metateóricos acerca de quais entidades constituem a realidade e quais são as relações entre elas. Em outro nível se situam os autores cuja abordagem é rotulada por Marres de ontologia empírica, ou seja, que a pensam como fenômeno empírico ou acontecimento. Procura-se explorar neste nível as associações por meio das quais diferentes entidades vêm a ser no mundo e a própria realidade é vista como múltipla e fluida. A proposta deste artigo é discutir mais detidamente este segundo nível da ontologia, em especial a noção de ontologia múltipla formulada por Mol, explicitando sua compreensão das consequências políticas desta abordagem.</p>

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Souza, Iara Maria de Almeida. "A noção de ontologias múltiplas e suas consequências políticas". Ilha Revista de Antropologia 17, n.º 2 (24 de dezembro de 2015): 049. http://dx.doi.org/10.5007/ilha.v17i2.38947.

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<p>http://dx.doi.org/10.5007/2175-8034.2015v17n2p49</p><p>É possível observar hoje nas ciências sociais um interesse crescente pela ontologia. Se boa parte da agenda clássica da disciplina estava situada no campo da epistemologia, centrada na noção de representação; a agenda atual em grande medida se define por uma preocupação em entender não visões de mundo, mas as realidades ou os mundos em que estamos imersos. Segundo Marres, a virada ontológica nesta disciplina compreende níveis distintos de reflexão. No primeiro nível, ontologia se refere à explicitação dos pressupostos metateóricos acerca de quais entidades constituem a realidade e quais são as relações entre elas. Em outro nível se situam os autores cuja abordagem é rotulada por Marres de ontologia empírica, ou seja, que a pensam como fenômeno empírico ou acontecimento. Procura-se explorar neste nível as associações por meio das quais diferentes entidades vêm a ser no mundo e a própria realidade é vista como múltipla e fluida. A proposta deste artigo é discutir mais detidamente este segundo nível da ontologia, em especial a noção de ontologia múltipla formulada por Mol, explicitando sua compreensão das consequências políticas desta abordagem.</p>

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Callejo Gallego, Manuel Javier. "Noortje Marres. Digital Sociology: The Reinvention of Social Research. Londres: Wiley. 2017." Barataria. Revista Castellano-Manchega de Ciencias Sociales, n.º 22 (30 de outubro de 2017): 231–34. http://dx.doi.org/10.20932/barataria.v0i22.368.

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El trabajo de Marres aquí traído adquiere especial singularidad con respecto a los citados. En primer lugar, su concepción de sociología digital atraviesa los cuatro niveles de origen bachelardiano: ontológico, epistemológico, metodológico y tecnológico. Es decir, se asume que la sociedad digital existe y que, en todo caso, lo digital atraviesa nuestras sociedades, con independencia de si se encuentran clasificadas en la categoría de muy desarrolladas o en la eufemística categoría de en vías de desarrollo.

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Kennedy, Helen. "Book Review: Noortje Marres, Digital Sociology: The Re-Invention of Social Research". Sociology 53, n.º 1 (3 de novembro de 2017): 216–18. http://dx.doi.org/10.1177/0038038517732257.

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Lee, Jeea, Jai Min Ryu, Jee Yeon Lee, Beom Seok Ko, Saebyeol Lee, Joo Heung Kim, Hee Jun Choi et al. "Abstract OT2-12-01: Mastectomy with reconstruction including robot endoscopic surgery (MARRES): A prospective cohort study of the Korea robot-endoscopy minimal access breast surgery study group (KoREa-BSG)". Cancer Research 82, n.º 4_Supplement (15 de fevereiro de 2022): OT2–12–01—OT2–12–01. http://dx.doi.org/10.1158/1538-7445.sabcs21-ot2-12-01.

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Abstract Background: Robot nipple sparing mastectomy (RNSM) has emerged for breast cancer treatment and for risk reducing mastectomy in women who have high risk of pathogenic variants. Even though several studies have reported that RNSM is a feasible procedure, some argue that RNSM are only performed by several specialized surgeons and there is only limited data reporting about the oncologic outcome and patient reported outcome (PRO). Recently, the United States Food and Drug Administration and several surgeons have warned that robot breast surgery should be performed only by specialized surgeons and the benefits, risks, and alternatives of all available treatment options should be discussed with patients to make the most informed treatment decision. The Korea Robot-Endoscopy Minimal Access Breast Surgery Study Group (KoREa-BSG) has been established to evaluate, standardize, and developing education program this cutting-edge procedure. We designed a multicenter prospective cohort study of Mastectomy with Reconstruction including Robot Endoscopic Surgery (MARRES) to report surgical outcome, PRO, and oncologic outcome. Methods: The MARRES study is a multi-institution cohort study that prospectively collects data from patients undergoing mastectomy and reconstruction. Patients' inclusion criteria are as below; adult women over the age of 19, with breast cancer or high risk of breast cancer (patients with a BRCA1/2 mutation, TP53 mutation, and PALB2 mutation), who scheduled therapeutic or prophylactic mastectomy, and who want immediate reconstruction. Surgical outcomes, oncologic outcomes, cost-effectiveness, and PRO were collected. The primary endpoints were postoperative complication rates in postoperative 30 days and Clavien-Dindo grade of postoperative complications in postoperative 180 days. The secondary endpoints were recurrence free survival in postoperative 5 years, cancer incidence rate in postoperative 5 years for those who underwent risk reducing mastectomy, patient's satisfaction within preoperative 4 weeks and results within postoperative 6 months to 12 months, surgeon's satisfaction about the postoperative results in postoperative 6 months, and cost-effectiveness of the definitive surgery. Patient recruitment will be finished in April 2025 and the goal number of enrolled patients is 2,000. Discussion: This study will provide evidence of the surgical outcome, PRO, and oncologic outcome of RNSM and endoscopic NSM compared to conventional NSM. Trial registration: ClinicalTrials.gov Identifier NCT04585074. Registered April 8, 2020. Citation Format: Jeea Lee, Jai Min Ryu, Jee Yeon Lee, Beom Seok Ko, Saebyeol Lee, Joo Heung Kim, Hee Jun Choi, Hyuk-Jae Shin, Young Woo Chang, Hye Yoon Lee, Hong-Kyu Kim, Hyung Seok Park. Mastectomy with reconstruction including robot endoscopic surgery (MARRES): A prospective cohort study of the Korea robot-endoscopy minimal access breast surgery study group (KoREa-BSG) [abstract]. In: Proceedings of the 2021 San Antonio Breast Cancer Symposium; 2021 Dec 7-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2022;82(4 Suppl):Abstract nr OT2-12-01.

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Balen e Leyton. "Policy translation: an invitation to revisit the work of Latour, Star and Marres". Global Discourse 6, n.º 1 (2 de janeiro de 2016): 101–15. http://dx.doi.org/10.1080/23269995.2014.1000571.

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Boon, Mathilde E., Yvonne Barlow, Elisabeth M. Marres e Jim Milios. "Microwave-Stimulated Jones–Marres Method for Staining Fungi in Brain Tissue of Immunocompromised Patients". Methods 15, n.º 2 (junho de 1998): 141–49. http://dx.doi.org/10.1006/meth.1998.0617.

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Martínez de Albéniz, Iñaki. "Objetos en revolución. Hacia una (cosmo)política idiota". Política y Sociedad 57, n.º 2 (6 de novembro de 2020): 415–35. http://dx.doi.org/10.5209/poso.66451.

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Las cosas son dependiendo de cómo las hagamos públicas. Este es el sugerente argumento que activan Bruno Latour y Peter Weibel en el dispositivo, de largo aliento e influencia, Making Things Public. Atmospheres of Democracy, desplegado en el ZKM de Karlsruhe en 2005. Este artículo, al modo de un re-enactment tramposo, trata de invertir el orden de los factores para alterar el producto: “lo público se hace a partir de la movilización de las cosas”. Making the Public with Things sería el contra-slogan. Para mostrar que las cosas hacen lo público se someterán a prueba de esfuerzo dos objetos, banderas y rodamientos, que, pese a que difieren entre sí en cuento a utilidades y carga simbólica, resuenan en la misma frecuencia cosmopolítica, es decir, desde el punto de vista de lo que Simondon llama su modo técnico de existencia, detonando materialidades públicas (Marres).

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Menon, M. G. Ramdas. "THE SYSTEMATIC POSITION OF THE GENUS MARRES WALKEE, WITH A REDESCRIPTION OF THE GENOTYPE (HYM.: CHALCIDOIDEA)". Proceedings of the Royal Entomological Society of London. Series B, Taxonomy 18, n.º 7-8 (18 de março de 2009): 145–50. http://dx.doi.org/10.1111/j.1365-3113.1949.tb01436.x.

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d’Andréa, Carlos Frederico de Brito. "Cartografando controvérsias com as plataformas digitais: apontamentos teórico-metodológicos". Galáxia (São Paulo), n.º 38 (agosto de 2018): 28–39. http://dx.doi.org/10.1590/1982-2554234208.

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Resumo Neste artigo propomos sistematizar e problematizar um conjunto de discussões sobre as especificidades teórico-metodológicas dos estudos de controvérsias em plataformas digitais. Em diálogo com autores que articulam os estudos sociais de Ciência e Tecnologia (STS, em inglês), a Teoria Ator-Rede e os estudos em internet, chamamos a atenção, entre outros aspectos, para as dimensões materiais e políticas da formação do social (LATOUR, 2012) em artefatos tecnológicos como o Twitter, Facebook e Wikipedia. Iniciamos o artigo com uma revisão do conceito de controvérsia para, em seguida, enfocar as singularidades dos momentos de disputas e conflitos que se constituem com as plataformas digitais. Em seguida, apresentamos a perspectiva dos “métodos digitais” (ROGERS, 2016) e estudos de caso que dialogam com a perspectiva do “empiricismo radical” descrita por Marres (2015). Por fim, discutimos como a cada vez mais evidente dimensão tecnopolítica da “plataformização da web” (HELMOND, 2015) traz novos desafios para as pesquisas sobre o tema.

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Nida-Rümelin, Martine. "René MARRES: In Defense of Mentalism. A Critical Review of the Philosophy of Mind. Amsterdam: Rodopi 1989". Grazer Philosophische studien 37, n.º 1 (13 de agosto de 1990): 217–20. http://dx.doi.org/10.1163/18756735-90000433.

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Faßler †, Manfred. "Kulturanthropologie als Veränderungswissenschaft". Kulturanthropologie Notizen 83 (11 de outubro de 2021): 85–104. http://dx.doi.org/10.21248/ka-notizen.83.6.

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Es sagt sich so leicht: unsere Welt verändert sich. Was aber verändert sich oder wird verändert? Wodurch, durch wen, warum? Cui bono? Leben wir in einer Welt „kreativer Zufälle“, von denen der Physiker Klaus Mainzer (2007) spricht? Oder lenkt dies vom „Egoismus der Gene“ ab, den der britische Biologe Richard Dawkins (1976) betont. Geschieht oder passiert Veränderung? Wird sie gemacht? Sind ´Egoismen der Kultur´, des Marktes, der Ökonomie daran beteiligt? Woher kommen diese? Welchen Sinn haben sie bei globalen Kooperations- und Konsensanforderungen? Und was ist zu tun, wenn sich herausstellt, dass die Bedingungen umwälzender Veränderungen menschengemacht und brutal und gewaltförmig sind, wie Saskia Sassen in ihrem Buch „Ausgrenzungen“ (2015) beschrieb. Oder, wenn wir uns selbst, unsere Körper, unsere Seinsweisen, unsere Denkweisen absichtlich verändern, wir eine Cyborgisierung (Haraway 1991) betreiben? Muss Wissenschaft dann explizit politisch werden? Sollten die ersten Schritte eine „experimental respecification of sociality with digital technologies“ (Marres & Gerlitz 2019, 3, Anm.1) sein? Mit diesen wenigen Fragen stelle ich verändern und machen in den Vordergrund meines Essays. Der Text ist ein Plädoyer für eine Kulturanthropologie, die sich dem reproduktiven Gattungsverhalten ebenso widmet wie Kultur-, Sozial-, Kommunikations-, Urbanisierungs-praxen, Kreativität, Maschinen- und Technologieentwicklungen.

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Small, W. Curtis, e Lee McAlister-Henn. "Identification of a Cytosolically Directed NADH Dehydrogenase in Mitochondria of Saccharomyces cerevisiae". Journal of Bacteriology 180, n.º 16 (15 de agosto de 1998): 4051–55. http://dx.doi.org/10.1128/jb.180.16.4051-4055.1998.

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ABSTRACT The reoxidation of NADH generated in reactions within the mitochondrial matrix of Saccharomyces cerevisiae is catalyzed by an NADH dehydrogenase designated Ndi1p (C. A. M. Marres, S. de Vries, and L. A. Grivell, Eur. J. Biochem. 195:857–862, 1991). Gene disruption analysis was used to examine possible metabolic functions of two proteins encoded by open reading frames having significant primary sequence similarity to Ndi1p. Disruption of the gene designated NDH1 results in a threefold reduction in total mitochondrial NADH dehydrogenase activity in cells cultivated with glucose and in a fourfold reduction in the respiration of isolated mitochondria with NADH as the substrate. Thus, Ndh1p appears to be a mitochondrial dehydrogenase capable of using exogenous NADH. Disruption of a closely related gene designated NDH2 has no effect on these properties. Growth phenotype analyses suggest that the external NADH dehydrogenase activity of Ndh1p is important for optimum cellular growth with a number of nonfermentable carbon sources, including ethanol. Codisruption of NDH1 and genes encoding malate dehydrogenases essentially eliminates growth on nonfermentable carbon sources, suggesting that the external mitochondrial NADH dehydrogenase and the malate-aspartate shuttle may both contribute to reoxidation of cytosolic NADH under these growth conditions.

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Özkula, Suay Melisa, Janna Joceli Omena e Radhika Gajjala. "Researching visual protest and politics with “extra-hard” data". Journal of Digital Social Research 6, n.º 2 (24 de maio de 2024): 46–65. http://dx.doi.org/10.33621/jdsr.v6i2.214.

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A range of scholars have criticised scholarly tendencies to focus on “easy” data such as provided by the low-hanging fruit of Twitter hashtag networks (Burgess & Bruns, 2015; Hargittai, 2020; Tromble, 2021). As a result, digital social research has been said to create a glut of studies that favour particular platforms, data forms, and networking dynamics, choices that may create ‘digital bias’ (Marres, 2017). These issues are particularly significant in visual data as the implicit nature of visuality means that platform spaces, text, and networked uses of visuals contribute to how visuals are interpreted in digital environments. In response to this issue, we present and critically reflect on new potentialities in software-based visual research on protest and politics, including: (1) rich cross-project comparisons; (2) complementing platform data with on-the-ground engagement, and (3) quali-quanti visual methods. These allow for rich data journeys through multi-modality, hybridity, comprehensive data curation, reiterative image data collection and interpretation, and the inclusion of contextual reflections in focused visual research, elements that provide meaning, texture, and context (= extra-hard data). We argue that visual digital methods consequently have the potential to provide nuanced, robust, and versatile analysis of visual data, if not necessitate these in a post-API age in which easy data access is no longer a given.

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Eyenga, Georges Macaire. "Technicisation des registres de vote et participation matérielle au cameroun". Réseaux N° 241, n.º 5 (31 de outubro de 2023): 239–73. http://dx.doi.org/10.3917/res.241.0239.

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Les réflexions sur la biométrie électorale en Afrique ont eu sur cette technologie un regard critique soulignant les logiques de son adoption à l’échelle du continent et les limites de sa mise en œuvre dans les processus électoraux. Le présent texte poursuit cette histoire des techniques, mais en décentrant la focale d’analyse sur la technicisation et la participation matérielle dont cette technologie est porteuse. À partir d’une étude menée à Yaoundé auprès d’Elections Cameroon, le texte analyse la manière dont la biométrie utilisée pour la constitution d’un registre de vote sécurisé et fiable, a été investie comme un mode d’engagement sur la question démocratique. Ce faisant, il s’inscrit au sein du « tournant matériel » pour saisir les qualités politiques de la biométrie, sa construction sociale et son rôle en tant que participant notable à l’utopie démocratique. L’analyse s’ancre dans les travaux de Noortje Marres sur les modalités contemporaines de la participation qui, au-delà d’informer les citoyens des problèmes publics, s’oriente de plus en plus vers une transformation des pratiques matérielles de la vie quotidienne. Il ressort de cette étude que, loin d’être une condition préalable de la démocratie, la biométrie électorale est perçue par certains acteurs comme une « technologie d’engagement » dont l’agence lui permet de s’assembler aux autres technologies de participation pour rendre agile les opérations d’enregistrement des électeurs et résoudre certaines controverses liées à l’organisation d’élections libres et transparentes.

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Lyman, R. Lee. "Paleoecological and biogeographical implications of late Pleistocene noble marten (Martes americana nobilis) in eastern Washington State, USA". Quaternary Research 75, n.º 1 (janeiro de 2011): 176–82. http://dx.doi.org/10.1016/j.yqres.2010.09.010.

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AbstractA mandible identified as noble marten (Martes americana nobilis) recovered from sediments dating to 11,800 cal yr BP and a humerus identified as M. a. cf. nobilis recovered from sediments dating from 13,100 to 12,500 cal yr BP at the Marmes Rockshelter archaeological site in southeastern Washington represent the first record of this taxon in the state. Mammalian taxa associated with the Marmes Rockshelter noble marten represent a diversity of open mesic habitats corroborating earlier analyses of other records of the noble marten in the western United States and exemplify how paleozoologists determine the ecology and environmental predilections of extinct taxa. The recovery site represents the topographically lowest record of this species in western North America and the farthest north record in the United States. Future research should examine known late-Quaternary Martes spp. remains from British Columbia and Alberta to fill in the 2200-km geographic gap in the known distribution of this taxon between a record in the northern Yukon and those in the western United States, and to refine our knowledge of noble marten paleoecology.

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Serrat, Marina. "Literature Review: European Tax Law, P. J. Wattel, O. Marres & H. Vermeulen (editors), Volume I, 7th ed., Kluwer Law International, 2019". Intertax 48, Issue 11 (1 de outubro de 2020): 1068–71. http://dx.doi.org/10.54648/taxi2020108.

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Papazu, Irina. "Authoring Participation". Nordic Journal of Science and Technology Studies 4, n.º 1 (1 de dezembro de 2016): 17. http://dx.doi.org/10.5324/njsts.v4i1.2169.

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<div><p>Samsø, Denmark's Renewable Energy Island since 1997, is world renowned for being self-sufficient in renewable energy and for having achieved energy self-sufficiency and CO<sub>2 </sub>neutrality through successful processes of public participation. In this article I seek to show how these processes of public participation so central to the Renewable Energy Island project can be better understood as instances of <em>material</em> participation motivated first and foremost by a concern for the future of the island as a 'liveable' community; a community in which jobs and institutions are not constantly threatening to disappear. By turning to material participation, a concept inspired by Noortje Marres and Jennifer Gabrys, the efforts put into Samsø’s energy transformation by the islanders are given specificity. While much literature on public participation foregrounds public meetings and other spaces for deliberation and debate, material participation locates participation in everyday practice and work. On Samsø, the islanders’ participation was not an add-on to the project, it was an indispensable resource in itself. Building on extensive fieldwork I analyse how the islanders came to invest their time and resources in the Renewable Energy Island project, highlighting how, by materializing energy in concrete, local projects, energy and climate change-related projects can gain community-strengthening potentialities reaching beyond goals of energy self-sufficiency. </p><div> </div></div>

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Rudenko, N. I. "Where STS Meets the Digital: Methodology, Experiments, and Participation. Book Review of Marres N. (2017) Digital Sociology: The Reinvention of Social Research. Cambridge: Polity Press". Sociology of Power 30, n.º 3 (outubro de 2018): 201–9. http://dx.doi.org/10.22394/2074-0492-2018-3-201-209.

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Birkbak, Andreas. "Shitstorms, bobler eller sagsorienterede offentligheder? Digitale metoder og kontroverser på sociale medier". Dansk Sociologi 29, n.º 1 (5 de abril de 2018): 37–61. http://dx.doi.org/10.22439/dansoc.v29i1.5723.

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Kontroversen om planerne for en betalingsring i København afstedkom blandt andet en række sider på Facebook. Eksemplet er ikke enestående: Sociale medier lægger i disse år ofte brugerflade til folkelige protester og kontroverser. Sociologien har med digitale metoder fået en række værktøjer til at indsamle data om dem. Flere af de digitale teknikker er formet af et teoretisk udgangspunkt hos Bruno Latour. Artiklen undersøger, hvilke metodiske retningslinjer der følger af en Latour-inspireret forståelse af politik og demokrati. Først afsøges Latours inspirationskilder i den amerikanske pragmatisme. Dernæst diskuteres Noortje Marres’ bud på konsekvenserne for digitale metoder. Endelig analyseres betalingsringskontroversen for at give et eksempel på en undersøgelse med digitale metoder, der tager udgangspunkt i idéen om demokratisk offentlighed som noget, der opstår i anledning af konkrete problematiske sager. Analysen bygger på 4.500 posts og kommentarer fra syv forskellige Facebook-sider om betalingsringen, der opsummeres i en co-wordvisualisering. Artiklen fremfører, at et Latour-inspireret fokus på sagsorienterede offentligheder tilbyder et interessant alternativ til affejende begreber som shitstorms og ekkokamre, og diskuterer de metodiske udfordringer, som tilgangen medfører for digitale metoder. ENGELSK ABSTRACT Andreas Birkbak: Shit storms, bubbles or issue publics? Digital methods and controversies on social media The controversy around plans to introduce congestion charges in Copenhagen included a number of protest pages on Facebook. This is not unique since social media are often used for popular protests these days. With the rise of digital methods, sociology has obtained a number of tools for collecting data about such protests. Several of the digital techniques are inspired by the work of Bruno Latour. This article investigates the methodological challenges that arise from a Latour-inspired understanding of politics and democracy. First, Latour’s inspiration from American pragmatism is explored. Next, Noortje Marres’s arguments about the consequences for digital methods are discussed. Finally, the congestion charge controversy is analyzed in order to provide an example of an inquiry with digital methods that is based on the idea that publics emerge in relation to problematic issues. The analysis is based on 4,500 posts and comments from seven different Facebook pages about the congestion charge controversy. The article argues that a Latour-inspired focus on issue-oriented publics offers an interesting alternative to sweeping concepts like shit storms and echo chambers, and explores the methodological challenges that the approach entails for digital methods. Keywords: Digital methods, Facebook, publics, controversy, Latour, congestion charges

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Reig, Santiago, e Andrzej L. Ruprecht. "Skull variability of Martes martes and Martes foina from Poland". Acta Theriologica 34 (9 de dezembro de 1989): 595–624. http://dx.doi.org/10.4098/at.arch.89-57.

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Hodgson, Richard. "A response to ‘Emergency cricothyrotomy: a randomised crossover trial comparing the wire-guided and catheter-over-needle techniques’, Fikkers BG, van Vugt S, van der Hoeven JG, van den Hoogen FJA, Marres HAM,Anaesthesia2004; 59: 1008-11". Anaesthesia 60, n.º 1 (janeiro de 2005): 105. http://dx.doi.org/10.1111/j.1365-2044.2004.04080.x.

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Chassay, Jean-François. "Marges". Voix et Images 22, n.º 1 (1996): 153. http://dx.doi.org/10.7202/201286ar.

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Faugeras, Danièle. "Marges". Sud/Nord 15, n.º 2 (2001): 55. http://dx.doi.org/10.3917/sn.015.0055.

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Modorov, Makar, Vladimir Monakhov, Vladimir Mikryukov, Nikolai Erokhin, Inga Tkachenko, Maria Polezhaeva e Maryana Ranyuk. "Microsatellite multiplex assay for sable (Martes zibellina) and pine marten (Martes martes)". Mammal Research 65, n.º 4 (25 de agosto de 2020): 855–62. http://dx.doi.org/10.1007/s13364-020-00529-4.

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Bourgault, Daniel, Cédric Chavanne, Dany Dumont, Émilie Morin, Peter S. Galbraith e Louis Gostiaux. "Le point sur les marées d’équinoxes dans l’estuaire du Saint-Laurent". Sciences de la mer 140, n.º 1 (27 de novembro de 2015): 73–84. http://dx.doi.org/10.7202/1034101ar.

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Selon une étude publiée dans Le Naturaliste canadien, les marées de l’estuaire du Saint-Laurent ne seraient pas plus grandes aux équinoxes qu’à d’autres moments de l’année. Cette idée de marées plus grandes aux équinoxes relèverait plutôt d’une croyance populaire sans fondements théoriques, répandue même parmi la communauté scientifique. Il est démontré ici que ces conclusions contredisent en fait la théorie des marées et découlent d’un problème de sous-échantillonnage des données de marées. Une analyse basée sur 30 ans d’observations horaires du niveau de la mer à la station Rimouski montre que, statistiquement, les marées sont bel et bien plus énergétiques autour des équinoxes, en accord avec la théorie des marées. Cependant, cette conclusion statistique n’indique pas nécessairement que les marées les plus fortes d’une année particulière se rencontrent précisément aux jours des équinoxes puisque l’augmentation du marnage vers les équinoxes est faible comparativement aux variations de marnages associées au cycle vive-eau/morte-eau (2 semaines) qui n’est pas synchronisé avec les équinoxes. La théorie des marées est expliquée simplement et un schéma est proposé pour illustrer l’influence du cycle équinoxe-solstice sur les marées.

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Diel de Amorim, Mariana, Firdous A. Khan, Tracey S. Chenier, Elizabeth L. Scholtz e M. Anthony Hayes. "Analysis of the uterine flush fluid proteome of healthy mares and mares with endometritis or fibrotic endometrial degeneration". Reproduction, Fertility and Development 32, n.º 6 (2020): 572. http://dx.doi.org/10.1071/rd19085.

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The objective of this study was to evaluate the differences in the uterine flush fluid proteome between healthy mares and mares with endometritis or fibrotic endometrial degeneration (FED). Uterine flush fluid samples were collected from healthy mares (n=8; oestrus n=5 and dioestrus n=3) and mares with endometritis (n=23; oestrus n=14 and dioestrus n=9) or FED (n=7; oestrus n=6 and dioestrus n=1). Proteomic analysis was performed using label-free liquid chromatography–tandem mass spectrometry. Of 216 proteins identified during oestrus, 127 were common to all three groups, one protein was exclusively detected in healthy mares, 47 proteins were exclusively detected in mares with endometritis and four proteins were exclusively detected in mares with FED. Of 188 proteins identified during dioestrus, 113 proteins were common between healthy mares and mares with endometritis, eight proteins were exclusively detected in healthy mares and 67 proteins were exclusively detected in mares with endometritis. Quantitative analysis revealed a subset of proteins differing in abundance between the three groups during oestrus and between healthy mares and mares with endometritis during dioestrus. These results provide a springboard for evaluation of specific proteins as biomarkers of uterine health and disease and for investigation of their roles in the establishment and maintenance of pregnancy.

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Lange-Consiglio, Anna, Silvana Arrighi, Nadia Fiandanese, Paola Pocar, Marina Aralla, GiamPaolo Bosi, Vitaliano Borromeo et al. "Follicular fluid leptin concentrations and expression of leptin and leptin receptor in the equine ovary and in vitro-matured oocyte with reference to pubertal development and breeds". Reproduction, Fertility and Development 25, n.º 5 (2013): 837. http://dx.doi.org/10.1071/rd12188.

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There is no published information about follicular-fluid leptin concentrations or the presence of leptin and leptin receptor in the equine ovary or oocyte. Three groups of mares – adult draft mares, draft fillies and adult Standardbred mares – were included in the study. Leptin and leptin receptor were detected in all immature oocytes by immunofluorescence with higher intensity in oocytes from draft mares compared with draft fillies and Standardbred mares. After in vitro maturation a higher proportion of oocytes reached metaphase II in draft mares than in draft fillies and Standardbred mares, and in all groups both leptin and leptin receptor became localised in the oocyte cortex but with higher immunopositivity in draft mares compared with draft fillies and Standardbred mares. These intensities were confirmed by the expression profiles of leptin and leptin receptor mRNA. Moreover, leptin was detected in ovarian blood vessels in all three types of animal and within the corpora lutea in adult mares. Serum and follicular-fluid concentrations of leptin were similar in draft and Standardbred mares but higher in draft mares than in draft fillies. This study supports the hypothesis that expression of leptin and leptin receptor mRNA and the rate of maturation can be related either to adiposity or to puberty.

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Clark, Tim W., Elaine Anderson, Carman Douglas e Marjorie Strickland. "Martes americana". Mammalian Species, n.º 289 (12 de agosto de 1987): 1. http://dx.doi.org/10.2307/3503918.

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Colli, Licia, Rita Cannas, Anna M. Deiana e James Tagliavini. "Microsatellite Variability of Sardinian Pine Martens, Martes martes". Zoological Science 28, n.º 8 (1 de agosto de 2011): 580. http://dx.doi.org/10.2108/zsj.28.580.

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Maazaoui, Abbes. "Poétique des marges et marges de la poétique". L'Esprit Créateur 38, n.º 1 (1998): 79–89. http://dx.doi.org/10.1353/esp.2010.0006.

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Ludwig, Beate. "Das Duftmarkieren des Baummarders(Martes martes) unter Gehegebedingungen". Zeitschrift für Jagdwissenschaft 44, n.º 1 (março de 1998): 1–15. http://dx.doi.org/10.1007/bf02239879.

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Монахов, В. Г. "Видоспецифичность строения фронтальной части черепа у соболя ( Martes zibellina ) и куницы лесной ( Martes martes )". Зоологический журнал 99, n.º 11 (2020): 1298–306. http://dx.doi.org/10.31857/s0044513420080073.

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Francesca, Vercillo, Lucentini Livia, Mucci Nadia, Ragni Bernardino, Randi Ettore e Panara Fausto. "A simple and rapid PCR-RFLP method to distinguishing Martes martes and Martes foina". Conservation Genetics 5, n.º 6 (2004): 869–71. http://dx.doi.org/10.1007/s10592-004-1866-9.

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Doreau, M., S. Boulot e W. Martin-Rosset. "Effect of parity and physiological state on intake, milk production and blood parameters in lactating mares differing in body size". Animal Science 53, n.º 1 (agosto de 1991): 111–18. http://dx.doi.org/10.1017/s0003356100006048.

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ABSTRACTVoluntary food intake, milk production and blood characteristics were measured in mares between the 3rd month before foaling and the first 5 weeks of lactation. The effect of breed during pregnancy was determined using 15 light mares and eight heavy mares (522 and 763 kg live weight (LW) after foaling respectively). The effect of parity was studied on light mares (seven were primiparous and eight were multiparous). In lactation, only four primiparous and four multiparous light mares were retained. Diet consisted of 900 g hay and 100 g concentrates per kg and was offered ad libitum. Voluntary food intake in pregnancy was higher for heavy mares than for light mares: 15·2 v. 10·3 kg dry matter (DM) daily. This difference was explained by differences in LW, since DM intake was the same when expressed as a fraction of LW or metabolic weight (M). Energy and nitrogen supply exceeded requirements, in the same way for light and heavy mares. No significant variations in blood measurements were observed between light and heavy mares, except for glucose. Primiparous mares ate less DM than multiparous mares in pregnancy: 9·7 v. 10·8 kg DM (P > 0·05), significantly so relative to LW and M. DM intake per kg LW or M depended on the parity. This difference had no effect on blood measurements, except for acetate. During lactation, no other differences in voluntary food intake were observed with regard to parity, whatever the week of lactation. Milk yield was higher for multiparous mares than for primiparous mares (16·6 v. 14·6 kg daily). Gross energy of milk varied according to a similar pattern, principally because of variations in fat concentration (20·2 v. 16·5 g/kg for multiparous and primiparous mares respectively). Energy balance was significantly more positive for multiparous than for primiparous mares.

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Marin, Ana-Maria, Ovidiu-Alexandru Mederle, Gianluca Marucci, Dan-Cornel Popovici e Narcisa Mederle. "First Identification and Molecular Characterization of Trichinella britovi (Nematoda: Trichinellidae) from the Pine Marten (Martes martes Linnaeus, 1758) in Romania". Microorganisms 11, n.º 9 (18 de setembro de 2023): 2339. http://dx.doi.org/10.3390/microorganisms11092339.

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Trichinella spp. are etiological zoonotic agents spread throughout the world and affect mammals, birds, and reptiles; they evolve via two cycles: domestic and sylvatic. Martes martes is a carnivorous nocturnal mammal from the family Mustelidae. In Romania, this host is widespread in all forests of the country. Martes martes has an extremely voracious appetite, feeding on fruit and also on a variety of small animals, including rodents such as mice and rats. The aim of this study was the identification and molecular characterization of Trichinella larvae isolated from the muscle tissue of Martes martes collected in different counties of Romania. The muscle samples were examined via artificial digestion, and the larvae were identified at the species level via multiplex PCR. The presence of larvae belonging to Trichinella britovi, a species frequently identified in wild carnivores in temperate zones, was observed. Although T. britovi has been already reported in several host species in Romania, this is the first time this species has been observed in a Martes martes specimen. This finding contributes to our knowledge about the host species involved in the maintenance of the Trichinella sylvatic cycle in Romania, and it confirms that this parasite is consistently present in the wild fauna of this country.

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Woodward, E. M., M. Christoffersen, J. Campos, A. Betancourt, D. Horohov, K. E. Scoggin, E. L. Squires e M. H. T. Troedsson. "Endometrial inflammatory markers of the early immune response in mares susceptible or resistant to persistent breeding-induced endometritis". REPRODUCTION 145, n.º 3 (março de 2013): 289–96. http://dx.doi.org/10.1530/rep-12-0452.

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Transient endometritis after breeding is necessary for clearance of bacteria and spermatozoa; however, in a subpopulation of mares, the inflammation fails to resolve in a timely fashion. The objective of this study was to describe the uterine inflammatory response in mares susceptible or resistant to persistent breeding-induced endometritis (PBIE) during the first 24 h after induction of uterine inflammation. Twelve mares were classified as susceptible (n=6) or resistant (n=6) to PBIE. Mares were inseminated over five estrous cycles and endometrial biopsies were collected at one time point per cycle before (0) and 2, 6, 12, and 24 h after insemination. qPCR analysis forIL1B,IL6,IL8,IFNG,TNF(TNFA),IL10, andIL1RNwas performed, and endometrial inflammatory cells were counted for each sample. Relative quantification values reported fold changes in mRNA expression from 0 h values. A general pattern of expression post insemination was observed in both groups of mares. Cytokine mRNA increased at 2 h, peaked between 2 and 12 h, and then decreased. Differences were detected between groups of mares 6 h after challenge; resistant mares had higher mRNA expression ofIL6,IL1RN, andIL10than susceptible mares. Susceptible mares had an increased number of polymorphonuclear neutrophils in the endometrium 2 and 12 h after breeding when compared with resistant mares. These findings describe an inherent difference in the initial immune response to insemination and may help explain the transient nature of inflammation in resistant mares, whereas susceptible mares develop a persistent inflammation.

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Saifudin, Ali, Siti Aslimah, Lia Nur Aini e Theo Mahiseta Syahniar. "Diagnosis Kebuntingan Kuda Menggunakan Kit mare Test Pack". Jurnal Ilmu Peternakan Terapan 2, n.º 2 (7 de agosto de 2019): 44–49. http://dx.doi.org/10.25047/jipt.v2i2.1425.

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This research aimed to diagnosed pregnancy on mares using a test mare (MTP) kit. This study using 10 mares were used to confirm their pregnancy status using a rectal exploration technique (gold standard) using seven pregnant mares (K1) and three non-pregnant mares (K2). Serums from both groups were tested using a MTP kit. The research data were tested descriptive. The results showed that seven mares that were positively pregnant and three negative mares unpregnant after being tested using the MTP kit and rectal exploration. The conclusion that the MTP kit can be used to diagnose pregnancy in mares of 60 to 100 pregnancy days which is 100% accuracy sensitivity and specificity.

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Gauthier, Benoît, e Michel Goudreau. "Mares glacielles et non glacielles dans le marais salé de l’Isle Verte, estuaire du St-Laurent, Québec". Géographie physique et Quaternaire 37, n.º 1 (29 de novembro de 2007): 49–66. http://dx.doi.org/10.7202/032498ar.

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RÉSUMÉ Depuis 1904, de nombreuses hypothèses ont été émises pour expliquer l'origine des mares dans les marais salés côtiers. Au Québec, les chercheurs ont favorisé la thèse d'une origine glacielle, alors qu'ailleurs on a fait appel presque essentiellement à des causes non glacielles. À l'Isle-Verte, la localisation précise du pied de glace au haut de l'hydrolittoral moyen permet de démontrer que des mares glacielles sont créées à chaque printemps sur l'hydrolittoral moyen où abonde Spartina alterniflora, tandis que des mares non glacielles existent sur l'hydrolittoral supérieur du marais salé où surviennent les groupements à Spartina patens, Salicornia europaea, Spergularia marina, Festuca rubra, Carex paleacea, Carex satina, Spartina pectinata et Sonchus arvensis. Un inventaire détaillé de 80 mares glacielles et non glacielles permet d'en décrire la flore, la morphométrie et la pédologie. On doit reconnaître que les hypothèses émises à ce jour ne peuvent expliquer adéquatement la genèse des mares non glacielles.

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Killian, Gary, David Thain, Nancy K. Diehl, Jack Rhyan e Lowell Miller. "Four-year contraception rates of mares treated with single-injection porcine zona pellucida and GnRH vaccines and intrauterine devices". Wildlife Research 35, n.º 6 (2008): 531. http://dx.doi.org/10.1071/wr07134.

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We evaluated the multiyear contraceptive efficacy of the gonadotrophin-releasing hormone (GnRH) vaccine GonaCon, the porcine zona pellucida (PZP) vaccine SpayVac and the human intrauterine device (IUD) 380 Copper ‘T’ in mustang mares provided by the State of Nevada. Eight untreated control mares were compared with 12 mares treated with SpayVac, 16 mares treated with GonaCon and 15 mares treated with the copper-containing IUD. Rates of contraception for Years 1, 2, 3 and 4 respectively for SpayVac were 100% (12 of 12), 83% (10 of 12), 83% (10 of 12) and 83% (10 of 12), rates for GonaCon were 94% (15 of 16), 60% (9 of 15), 60% (9 of 15) and 40% (6 of 15) and rates for IUD-treated mares were 80% (12 of 15), 29% (4 of 14),14% (2 of 14) and 0% (0 of 14). Antibody titres against PZP and GnRH declined over the four-year study. For mares given SpayVac, uterine oedema was commonly observed. IUDs were visible by ultrasonography in non-pregnant mustang mares, suggesting that pregnant mares did not retain their IUD. IUD retention may be a function of uterine size: pony mares with IUDs had high retention and contraception rates for 4–5 years. We conclude that long-term contraception of mustang mares with a single shot of either the SpayVac or GonaCon vaccine is possible.

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Mahmood, Khalid, Aijaz Ali Channa, Aamir Ghafoor e Amjad Riaz. "Factors affecting the efficiency of equine embryo transfer (EET) in polo mares under subtropical conditions of Pakistan". PLOS ONE 19, n.º 2 (12 de fevereiro de 2024): e0298066. http://dx.doi.org/10.1371/journal.pone.0298066.

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Equine embryo transfer (EET) is a prominent technology in the equine breeding industry, and its efficacy is affected by a number of factors. The current study aimed to determine the effects of the breed of donor/recipient mares, estrus/ovulation induction treatment, cooled transportation of embryos, and synchrony between donor and recipient mares on the efficiency of the EET under subtropical conditions of Pakistan. A total of eighty-four (n = 84) Polo-playing donor mares (Argentino-polo = 41 and Anglo-Arab = 43) and seventy (n = 70) recipient mares (light breed = 26 and heavy breed = 44) were used for EET. The donor mares exhibiting natural estrus (n = 28) were detected by teaser a stallion, and corpus luteum (CL) having mares (n = 56) were treated with prostaglandin (150 μg of Cloprostenol) for estrus induction. The mares’ follicular growth was monitored through ultrasonography until the dominant follicle’s size reached 35 mm or more with a moderate to obvious uterine edema score. Afterward, the mares were treated either with GnRH, i.e., 50 μg of Lecirelin acetate (n = 41) or Ovusyn, i.e., 1500 IU hCG (n = 43). Insemination with chilled semen was performed 24 hours later. The embryos were collected non-surgically, 7 or 8 days after ovulation, from the donor mares. The collected embryos were transferred into the well-synchronized recipient mares as fresh (n = 44) or chilled (n = 26) embryos. The pregnancy after ET was checked through ultrasonography. Statistical analysis revealed that the embryo recovery rate (ERR) remained significantly higher (P<0.05) for the Prostaglandin (PG) treated group of donors as compared to the natural heat group of donors. The breed of donor mares, type of ovulatory treatment given, and day of embryo collection did not significantly (P>0.05) affect the ERR. There was no significant effect of the type (fresh vs chilled), classification, and stage of development of embryo on pregnancy outcomes (P>0.05). ET pregnancy rate was significantly affected by the breed of recipient mares and ovulation synchrony between donor and recipient mares (P<0.05). In conclusion, under the subtropical conditions of Pakistan, PG-based estrus induction of donor mares, breed of recipient mares, and ovulation synchrony between the donor and recipient mares had a substantial effect on the efficiency of EET.

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Richard, H., P. Appleton, D. J. Kesler e C. E. Ferguson. "12 PROGESTERONE SUPPLEMENTATION DAY 3 TO 5 POST-OVULATION IN AI-BRED MARES". Reproduction, Fertility and Development 25, n.º 1 (2013): 153. http://dx.doi.org/10.1071/rdv25n1ab12.

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The purpose of this study was to determine the effectiveness of increasing progesterone (P4) concentrations during early pregnancy, by supplementing a low dose of Regu-Mate® (Intervet, Millsboro, DE, USA) on Days 3, 4, and 5, post-ovulation to AI mares. Sixty-three AI-bred mares were randomly allocated to 1 of 2 treatment groups. All mares underwent ovulation induction using 1.5 mg mL–1 of deslorelin acetate (IM) following observation of ≥30-mm follicles and were inseminated with either fresh (n = 57) or cooled (n = 6) semen from fertile stallions approximately 24 h later. Ovulation was verified via ultrasonography in all mares. Mares allocated to the treatment group (n = 29) received altrenogest (Regu-Mate®) orally at a rate of 15 mg per day on Days 3, 4, and 5 following ovulation (d = 0), whereas control mares (n = 34) received no treatment. Blood samples were collected from all mares from Day 0 (ovulation) through Day 6 post-ovulation via jugular venipuncture. Pregnancies were determined via ultrasonography at 18 days post-ovulation. The pregnancy rate for untreated mares (18/34, 53%) was not different (P > 0.05) from altrenogest-treated mares (13/29, 45%). There was no difference (P > 0.50) in pregnancy rates when mares were AI bred 1 (19/39, 49%) or 2 (10/20, 50%) days from ovulation. The mean plasma P4 concentration on Day 5 was higher (P < 0.06) for pregnant control mares (4.75 ± 0.59 ng mL–1) compared with open control mares (3.50 ± 0.25 ng mL–1). There was a greater increase (P < 0.02) in plasma P4 concentrations (Day 5 – Day 1 concentration) in untreated pregnant mares (3.87 ± 0.56 ng mL–1) compared with untreated open mares (2.38 ± 0.22 ng mL–1). In conclusion, it was determined that altrenogest supplementation from Day 3 to 5 post-ovulation was ineffective in improving pregnancy rates. However, it is unknown if this was the result of the dose used or the length of supplementation. Additionally, the timing of altrenogest coincided with a significant increase in P4 in pregnant mares compared with open mares, indicating that the timing may be correct or there was action of an unknown embryonic luteotropin(s), which would describe the differences between P4 concentrations in pregnant versus open mares.

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Christman, Shelly A., Michael T. Bailey, Jonathan E. Wheaton, Mats H. T. Troedsson, Mohammed M. Ababneh e Elizabeth M. Santschi. "Dimeric inhibin concentrations in mares with granulosa-theca cell tumors". American Journal of Veterinary Research 60, n.º 11 (1 de novembro de 1999): 1407–10. http://dx.doi.org/10.2460/ajvr.1999.60.11.1407.

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Abstract Objective To determine whether concentrations of dimeric inhibin (αβA) are greater in plasma and tumor fluid from mares with granulosa-theca cell tumors (GTCT), compared with concentrations in plasma and equine follicular fluid (eFF) from control mares. Animals 6 mares with GTCT and 12 clinically normal mares. Procedure The αβA immunoradiometric assay used 2 antibodies, one against each subunit of inhibin (α and βA subunits). Tumor tissue, tumor fluid, and a single blood sample were collected at the time of surgical removal of the GTCT. A single blood sample was collected from 7 control mares during various stages of the estrous cycle. Five other control mares were ovariectomized when their ovaries contained growing follicles of 25 to 35 mm in diameter. A blood sample and eFF from the largest follicle were collected at the time of ovariectomy. Results Mares with GTCT had significantly greater plasma concentrations of αβA (mean ± SEM, 0.86 ± 0.53 ng of recombinant human-αβA/ml), compared with control mares (0.14 ± 0.02 ng/ml). Concentrations of αβA in tumor fluid and eFF were similar. Concentrations of αβA were significantly lower after ovariectomy. Conclusions and Clinical Relevance Dimeric inhibin concentration was higher in plasma from mares with GTCT than in plasma from control mares. Increased granulosa cell mass and loss of mechanisms regulating αβA release in mares with GTCT likely accounted for the increase in plasma concentrations. Measurement of αβA concentrations may be useful for identifying mares with GTCT. (Am J Vet Res 1999;60:1407–1410)

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Li, Bo, Yan Chun Xu, Yue Ma, Morten Elmeros, Tian Ming Lan e Su Ying Bai. "A PCR-RFLP-based method to distinguish sable (Martes zibellina) and pine marten (Martes martes)". Acta Theriologica 56, n.º 3 (julho de 2011): 283–88. http://dx.doi.org/10.1007/s13364-011-0027-z.

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Shcherbatyy, A. R., L. G. Slivinska, B. V. Gutyj, V. L. Fedorovych e B. O. Lukashchuk. "Influence of Marmix premix on the state of lipid peroxidation and indices of non-specific resistance of the organism of pregnant mares with microelementosis". Regulatory Mechanisms in Biosystems 10, n.º 1 (26 de fevereiro de 2019): 87–91. http://dx.doi.org/10.15421/021914.

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We observed the processes of lipid peroxidation, characterized by increased content of intermediate and its end products (diene conjugates, lipid hydroperoxides, malonic dialdehyde), in the blood of the pregnant mares. The changes of the data of indicators in the organism of the mares at the 9–11 months of pregnancy were established. The level of diene conjugates in the blood of animals was 3.6 ± 0.12 μmol/l, 33.3 and 44.0%, which was higher compared to non-pregnant mares and mares at 4th month of pregnancy. The concentration of lipid hydroperoxides in the blood of mares increased by 100% and by 42.9% in the blood of non-pregnant mares and mares at 4th month of pregnancy. The concentration of malondialdehyde in the blood of mares increased by 75.0%, 51.2% and 25.0% compared to non-pregnant mares and mares at 4th and 7th month of pregnancy, respectively. The results of our research showed that the mineral-vitamin premix Marmix had a positive influence on the state of lipid peroxidation products, contributed to their lowering in the blood of pregnant mares, which demonstrated antioxidant action and stimulated the function of the immune system. It was established that the bactericidal and lysozyme activity of the blood serum and the concentration of circulating immune complexes increases in the mares with lack of trace elements. It was shown that feeding mares during the 9–11 months of pregnancy with the mineral-vitamin premix Marmix had a positive influence on the state of humoral factors of nonspecific resistance. In particular, the concentration of bactericidal activity of serum increased by 31.0%, lysozyme activity of blood serum – 45.4% and contributed to the decrease of the concentration of circulating immune complexes in serum by 3.8 times. The use of mineral-vitamin premix Marmix during 60 days in feeding pregnant mares caused a restoration of the clinical status, a decrease in the content of lipid peroxidation products.

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Gee, Erica K., Chris W. Rogers e Charlotte F. Bolwell. "Commercial equine production in New Zealand. 1. Reproduction and breeding". Animal Production Science 60, n.º 18 (2020): 2145. http://dx.doi.org/10.1071/an16728.

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The Thoroughbred and Standardbred studbooks are the largest in New Zealand, where the production of horses is pasture based. Each racing studbook is closed, and both have well structured systems in place for recording breeding data. There are significant pressures on the Thoroughbred and Standardbred breeding industries with declining broodmare numbers, and increasingly large book sizes for popular stallions. The breeding season for Thoroughbreds is very short, with disparity between the official breeding season and the physiologic breeding season for mares. These issues are confounded by variable gestation lengths of mares, making it difficult for mares to maintain yearly foaling patterns. However, the reproductive efficiency of Thoroughbred mares is improving, mainly due to veterinary and stud management practices such as those to ensure that dry mares are cycling at the start of the breeding season, foaling mares are bred on foal heat, and that mares are kept in good body condition at breeding. There is also a bias towards breeding younger mares with high fertility in preference to older mares, unless they have desired genetics or successful offspring. Careful management of popular Thoroughbred stallions ensures that large books of mares can be covered by natural service. In contrast, Standardbred stallions are collected every-other-day using an artificial vagina, allowing the breeding of mares at distant locations by artificial insemination, using chilled or frozen semen. Breeding horses kept at pasture under New Zealand conditions requires excellent stud management and veterinary management to achieve good outcomes.

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Redmond, Lisa M., Dee L. Cross, James R. Strickland e Sidney W. Kennedy. "Efficacy of domperidone and sulpiride as treatments for fescue toxicosis in horses". American Journal of Veterinary Research 55, n.º 5 (1 de maio de 1994): 722–29. http://dx.doi.org/10.2460/ajvr.1994.55.05.722.

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Summary We evaluated the effectiveness of 2 dopamine antagonists as treatments for fescue toxicosis in horses. Sixteen gravid mares were assigned by breed and expected foaling date to 1 of 3 treatment groups; endophyte-infested control; 1.1 mg of domperidone/kg of body weight/d; and 3.3 mg of sulpiride/kg/d. Mares were pastured on endophyte-infected fescue and received 0.454 kg of a corn and dried molasses carrier containing the drug treatment. Treatment started 30 days prior to expected foaling date and continued until parturition. Blood samples were collected, and mammary gland scores were recorded every 5 days. Body weight and body condition scores were obtained every 28 days. Serum was analyzed for prolactin, progesterone, and estradiol-17β concentrations. Domperidone-treated mares had shorter (P = 0.09) gestation duration and foaled closer (P = 0.07) to their expected parturition date than did control mares. Mammary gland scores were higher (P < 0.05) for domperidone-treated mares than for control mares. By 4 and 9 days after the start of treatment, serum prolactin concentration was higher (P < 0.05) in domperidone-treated mares and sulpiride-treated mares, respectively, than in control mares. Domperidone- and sulpiride-treated mares had higher (P < 0.05) serum progesterone and lower (P < 0.01) estradiol-l7β concentrations than did control mares. These results indicate that domperidone may offer considerable potential as a treatment for fescue toxicosis in horses.

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Tkachova, Iryna, G. O. Frolova e Nataliia Platonova. "EFFICIENCY OF SELECTION MODELS ACCORDING TO GENEALOGICAL GROUPS IN OBTAINING BREEDING MARES IN THE ORLOV’S TROTTER OF THE UKRAINIAN POPULATION". Scientific and Technical Bulletin of the Institute of Animal Science NAAS of Ukraine, n.º 128 (2022): 188–98. http://dx.doi.org/10.32900/2312-8402-2022-128-188-198.

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The object of research was the Ukrainian massif of breeding mares of the Orlov’s Trotter, registered on January 1, 2022 (n=194). The 75.1% (145 mares) of all breeding mares were tested on hippodromes. It was determined that there were low-level negative correlations between mares' agility indicators and body measurements. However, positive relations were established analyzing the correlations between the record agility and the measurements of the mares of different studs. It was determined that mares tested at the Kyiv Hippodrome with a high probability (p>0.95-0.99) prevailed in terms of agility of herdmates tested at the Odessa Hippodrome, both in terms of record agility and agility revealed in all age periods. There were found 299 Orlov’s Trotters of the 2.10 min agility class and more lively, of which 25 horses entered the 2.05 min and faster, 2 horses - to class 2.00 min and faster during the selection period from 2001 to 2021. It was determined that mares of the Orlov’s Trotters of the Ukrainian population of the agility class of 2.05 min were not found to be faster, the fastest mare in the modern reproductive composition is Antalya 2.05,7, gray, 2014 (Aphorism - Artistka) of the Dibrivsky stud. Of all tested mares, only 13.8% have a high class of agility 2.10 min faster. The predominant number of mare’s agility class’s 2.10.1-2.15.0 min (31.1%) 2.15.1-2.20 min (24.1%). Based on the analysis of pedigrees, it was determined that the domestic population of the Orlov’s Trotter is structured according to 8 genealogical lines and 32 maternal families. The most developed region in terms of both stallions and mares is Barchuk-Zapad line (40.6 and 31.4%, respectively). The largest number of tested mares comes from the breeding line Barchuk-Zadap and Pion lines. The highest record agility for the distance of 1600 m belongs to mares Voin (136.6±1.75 s), Barchuk (136.8±1.25 s), Ispolnitielny (137.3±4.19 s), Boltik (137.6 ±5.11 s) and Pilot (137.7±2.44 s) lines. The most precocious (the fastest in a 2-year-old mare) are Ispolnitielnyi (145.7±3.78 s), Barchuk (147.3±1.27 s), Barchuk-Zapad (147.8±1.45 s) lines. The 53 genealogical combinations were recorded in the studied array of mares. The most numerous interlineal combinations were Pion × Pion (13 mares), Barchuk × Zapad (taking into account that the Zapad branch originates from the Barchuk line) (9 mares), as well as crosses Zapad × Pion (10 mares) and Zapad × Ispolnitielny (9 mares). In terms of record agility, there prevailed mares obtained from crosses Voin × Pion (134.1±3.07 s), Ispolnitielnyi × Zapad (134.6±3.89 s), Pilot × Pion (134.8±4.76 s). Thus, these combinations are the most effective in selecting parental pairs to obtain the fastest mares for the reproductive population.

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Tkachova, Iryna. "SELECTION ANALYSIS OF THE FORMATION OF THE REPRODUCTIVE COMPOSITION OF THE NEWLY CREATED UKRAINIAN TROUT BREED GROUP OF HORSES". Scientific and Technical Bulletin of the Institute of Animal Science NAAS of Ukraine, n.º 129 (2023): 198–212. http://dx.doi.org/10.32900/2312-8402-2023-129-198-212.

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The object of research was an array of breeding mares of the newly created Ukrainian trotting breed group of horses, registered as of 01.01.2023 (n=194). 91.6% of all breeding mares were tested on racetracks with an average liveliness of 2.12.9 min. The quantitative and qualitative indicators of the investigated array, the genealogical structure, and the effectiveness of genealogical combinations were determined. The liveliest mares were selected for breeding stock of the Dibrivskiy stud (average liveliness 2.08.2±0.86 min.). In prize-winning precocity, mares of Zaporizhskiy stud with a high probability (p<0.01) prevail over mares of other stud farms (average sprightliness at 2 years of age – 2.24.9±1.47 min.). The highest record liveliness at an older age in mares of the Dibrivskiy stud (2.05.4±0.64 min.). Of all the evaluated mares of the newly created breed group, 12% are in the liveliness class of 2.05 min. and more lively and almost half (48.8%) to class 2.10 min. and livelier. The majority of mares belong to the liveliness classes of 2.05.1-2.10.0 min. (36.8%), 2.10.1-2.15.0 min. (19.7%), 2.00.1-2.05 min. (12,0 %), 2.15.1-2.20 min (9.4%). In the breeding stock of the Dibrivskiy stud, 10 mares (32.3%) are in the liveliness class of 2.05 min. and more lively, 21 mares (67.7%) are to liveliness class 2.10 min and livelier. In general, it can be stated that liveliness is a fairly consolidated feature (Cv=7.28) of the reproductive composition of the newly formed trotting breed group. According to the results of the assessment of body measurements, it was established that the mares of the Dibrivskiy stud prevail in terms of height at the withers and length of the body (p<0.05), so it can be stated that the selection strategy of this farm is aimed at the right movement of combining high prize productivity with exterior indicators. Mares of all stud farms practically do not differ in chest girth and wrist. the highest score for origin, type, exterior and prize performance was given to mares of the Dibrivskiy Stud (p<0.05). The mares of the Lymarivskiy stud farm received the highest marks for their measured performance. The analysis of the genealogical structure determined the origin of breeding stallions from 6 and reproductive mares from 9 genealogical lines. The Speedy Crown line is the most developed in terms of stallions and mares (46.7 and 34.3%, respectively). The highest record liveliness for the distance of 1600 m (at the level of liveliness class 2.10 min. and livelier) belongs to mares of lines: Hut Moon (125.5±1.55 s) and Arnie Almahurs (127.6±1.37 s). The most precocious mares of the lines: Low Hanover (142.7±3.17 s), Worthy Boy (143.1±1.53 s), Hut Moon (144.5±3.75 s) and Speedy Crown (146.1±1.71 s). The studied array of mares is divided into 25 maternal families. The results of the analysis show that Ruta's mare of line is most effectively combined with genealogical lines. Keywords: horses, Ukrainian trotting breed group, breeding mares, genealogical combinations, lines, parent families, generation, selection traits.

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