Дисертації з теми "Meat birds"
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Colles, Frances M. "Population structure and dynamics of Campylobacter populations carried by wild birds and chickens reared in a free-range woodland environment." Thesis, University of Oxford, 2006. http://ora.ox.ac.uk/objects/uuid:3dc7cdfb-29f6-4681-b8db-cb71129cd946.
Повний текст джерелаDerbyshire, Walter. "Game meat production in the Xhariep district of the Free State province : evaluating and optimising resources." Thesis, [Bloemfontein?] : Central University of Technology, Free State, 2011. http://hdl.handle.net/11462/137.
Повний текст джерелаIn addition to one national park and six nature reserves, the Free State Province boasts several privately owned game reserves, as well as game farmers and commercial stock farmers who keep game. A survey conducted in 1985 showed that the majority of game could be found in the Xhariep District situated in the southern and south-western parts of the province. Game export abattoirs and processing facilities are situated in provinces other than the Free State, which results not only in an outflow of game carcasses for export purposes, but also a loss of employment opportunities and opportunities for the generation of foreign currency from a district (Xhariep) which, from a socio-economic perspective, is seen as deprived. There are 21 non-export highthroughput red meat abattoirs in the province, posing the question as to whether these could be used for the slaughtering of game. This study aimed firstly to compile guidelines for the wild game meat industry regarding the production of wild game meat for the international market and to assess wild game production and utilisation in the Xhariep District through a comprehensive survey of game farming practices, game numbers and species, as well as the utilisation of game through various consumptive and non-consumptive methods. A further aim was to investigate practices at existing slaughter facilities in order to determine their potential to be adapted into wild game meat export facilities and assess such potential via a standardised protocol. The research commenced with an investigation into processing and export requirements for wild game meat in South Africa through a literature study of all EU legislation, directives and other relevant literature on the subject, and provides comprehensive reference material for entrepreneurs and developers in the wild game meat industry. Methodologies utilised included audits to determine the extent to which abattoirs conform to the structural, operational and documentation meat hygiene requirements followed by the development of a novel assessment matrix for measuring the level of compliance of existing abattoirs and their potential to be developed into European Union (EU) export facilities. The survey of the Xhariep area concluded that a significant potential exists for the expansion of the game industry, as several respondents indicated that they were interested in expanding their game production and that they had land available for this purpose. A further indication was that the game would be highly marketable because it was free ranging and could be regarded as organic due to the absence or controlled use of additives and pesticides that could result in chemical residues in the meat. The establishment of a wild game export facility was favoured by nearly 70% of the respondents. The hygiene evaluation of existing slaughter facilities in the Free State Province resulted in six slaughtering facilities being rated as good or excellent, demonstrating the potential to successfully process game meat for the export market. This was tested by utilising the proposed evaluation matrix, which rated the abattoirs most suited to be adapted into game meat processing facilities for export purposes. The value of this approach lies in the fact that it is not only restricted to local markets, but can be utilised internationally by the abattoir industry, as well as the fact that it is not species specific. It should, however, be applied objectively by knowledgeable operators in the industry. It is concluded that institutions in the Free State Province possess the knowledge and ability to not only produce wild game meat, but also to successfully process this commodity through the optimal utilisation of existing high-throughput red meat abattoirs. By utilising existing management skills and affecting relatively minimal adjustments to existing structures, these resources should be utilised to successfully enter the wild game meat export market which should, in turn contribute towards the prosperity of the Xhariep District.
Murakami, Karline Tikae Tani. "Óleo de linhaça como principal fonte lipídica na dieta de frangos de corte /." Araçatuba : [s.n.], 2009. http://hdl.handle.net/11449/94734.
Повний текст джерелаAbstract: This work studied the effects of the utilization of linseed oil in broilers feeds as a substituent to soybean oil at different periods on performance and carcass composition of Cobb broilers, well as on the physicalchemical traits of their meat. Three hundred twenty birds were raised with linseed or soybean oil in the feed in a 4x2 factorial arrangement of treatments (4 growing periods receiving the experimental diets and 2 sexes). Performance was evaluated by the weighs of feeds and birds at days 1, 21, 42 and 49 of the experiment. After slaughtering, as the birds were 49 days old, carcass yield and percentages of main cuts, viscera and abdominal fat were quantified. Total lipids, moisture and cholesterol contents in breast and thighs were determined. The stability of the lipidic fraction in frozen meat was determined by the tiobabituric acid (TBA) methodology. Meat shear force was analyzed in a texturometer. In a general sense, linseed oil was harmful to broilers performance (P<0.05). Female broilers had higher breast percentage and more abdominal fat than male broilers (P<0.05). Birds fed linseed oil had less abdominal fat and lower total lipids and cholesterol contents in the meat than those fed soybean oil (P<0.05). Results did not lead to a conclusion about the influence of sex and oil source on meat texture and stability to lipid oxidation.
Orientador: Marcos Franke Pinto
Coorientador: Elisa Helena Giglio Ponsano
Banca: Manoel Garcia Neto
Banca: Jacira dos Santos Isepon
Mestre
Masinde, Brian. "Birds' Flight Range. : Sensitivity Analysis." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-166248.
Повний текст джерелаAl-Amer, Saleh Suliaman. "Nutritional and toxicological studies on New Zealand mutton bird meat (Puffinus griseus)." Lincoln University, 2009. http://hdl.handle.net/10182/1659.
Повний текст джерелаMurakami, Karline Tikae Tani [UNESP]. "Óleo de linhaça como principal fonte lipídica na dieta de frangos de corte." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/94734.
Повний текст джерелаAvaliou-se o efeito da utilização de óleo de linhaça na ração de frangos de corte, substituindo o óleo de soja em diferentes períodos, sobre o desempenho, composição de carcaça e características físico-químicas da carne. Foram utilizadas 320 aves, recebendo ração suplementada com óleo de soja ou linhaça, num arranjo fatorial 4x2 (4 períodos crescentes recebendo dieta com óleo de linhaça e dois sexos). O desempenho foi avaliado por pesagens da ração e das aves nos dias 1, 21, 42 e 49, quando as aves foram abatidas. Após o abate, foi avaliado o rendimento de carcaça e a proporção dos principais cortes, vísceras e gordura abdominal. Foram avaliados os teores de lipídeos totais, umidade e colesterol na carne do peito e das coxas com sobrecoxas. A estabilidade da fração lipídica da carne mantida sob congelamento foi avaliada pelo método do ácido 2-tiobarbitúrico (TBA). A textura da carne foi avaliada pela determinação da força de cisalhamento em texturômetro. O óleo de linhaça na ração, de forma geral, prejudicou os parâmetros de desempenho avaliados (P<0,05). As fêmeas apresentaram maior proporção de peito e maior quantidade de gordura abdominal que os machos (p<0,05). As aves alimentadas com ração contendo óleo de linhaça apresentaram menor proporção de gordura abdominal e teores mais baixos de lipídeos totais e colesterol na carne do que aquelas alimentadas exclusivamente com ração contendo óleo de soja (p<0,05). Os resultados observados não permitiram uma avaliação conclusiva quanto à influência do sexo e das fontes de óleo da ração sobre a textura da carne e sua estabilidade à oxidação lipídica.
This work studied the effects of the utilization of linseed oil in broilers feeds as a substituent to soybean oil at different periods on performance and carcass composition of Cobb broilers, well as on the physicalchemical traits of their meat. Three hundred twenty birds were raised with linseed or soybean oil in the feed in a 4x2 factorial arrangement of treatments (4 growing periods receiving the experimental diets and 2 sexes). Performance was evaluated by the weighs of feeds and birds at days 1, 21, 42 and 49 of the experiment. After slaughtering, as the birds were 49 days old, carcass yield and percentages of main cuts, viscera and abdominal fat were quantified. Total lipids, moisture and cholesterol contents in breast and thighs were determined. The stability of the lipidic fraction in frozen meat was determined by the tiobabituric acid (TBA) methodology. Meat shear force was analyzed in a texturometer. In a general sense, linseed oil was harmful to broilers performance (P<0.05). Female broilers had higher breast percentage and more abdominal fat than male broilers (P<0.05). Birds fed linseed oil had less abdominal fat and lower total lipids and cholesterol contents in the meat than those fed soybean oil (P<0.05). Results did not lead to a conclusion about the influence of sex and oil source on meat texture and stability to lipid oxidation.
Mead, Reginald Marshall. "A system for automating identification of biological echoes in NEXRAD level II radar data." Thesis, Montana State University, 2009. http://etd.lib.montana.edu/etd/2009/mead/MeadR1209.pdf.
Повний текст джерелаRodriguez-Palacios, Alexander. "Ecology and Epidemiology of Human Pathogen Clostridium difficile in Foods, Food Animals and Wildlife." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1313582304.
Повний текст джерелаCulina, Antica. "With or without you : pair fidelity and divorce in monogamous birds." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:6f2d3c09-712c-4f1f-838a-4a23fe5c85d1.
Повний текст джерелаRonget, Victor. "The relationships linking age and body mass to vital rates : a comparative perspective in birds and mammals." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1304/document.
Повний текст джерелаIndividuals varies in terms of survival and reproduction. Most of those variations in vital rates can be linked to individual characteristics such as age or body mass. Demographic models were developed to make prediction on those trait-structured populations and are now often used to manage wild populations. However, the amount of data needed to perform those models is not available for every populations. To overcome this issue, I tried in my thesis to assess the general patterns for the relationships linking age and body mass to the vital rates in birds and mammals. By comparing relationship extracted in the literature, I was then able to assess the general effect of body or age on vital rates as well as the biological factor explaining the variation of those relationships between species and populations. I first assess how body mass influence vital rates in birds and mammals. I demonstrated the positive effect of offspring body mass on offspring survival and showed how the relative importance of each causes of mortality influence this relationship, with for instance a negative effect of the predation rate on the intensity of the relationship. I also showed that mother body mass is positively related to offspring body mass and that heavier mother are also more likely to reproduce. On a second part I focused on describing the relationship between age and survival for mammals. We built a database MALDDABA compiling all relationships linking vital rates to age for wild mammals from life tables reported in the literature. Using life table data compiled in the database I was able to demonstrate that females live on average longer than males in wild populations of mammals. I then critically assess the metrics of longevity and provide new insight to describe the relationship between mortality and age. With my thesis I provided new views on the uses of comparative approach to highlight the major factors influencing the population dynamic in the wild
Honyashiki, Mina. "Specificity of CBT for Depression: A Contribution from Multiple Treatments Meta-analyses." 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/193573.
Повний текст джерелаCummins, James B. "Adrenergic and Cholinergic Regulation of Cardiovascular Function in Embryonic Neotropic Cormorants (Phalacrocorax basilianus)." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc984219/.
Повний текст джерелаStudeny, Angelika C. "Quantifying biodiversity trends in time and space." Thesis, University of St Andrews, 2012. http://hdl.handle.net/10023/3414.
Повний текст джерелаMüller, Thomas. "Untersuchung des Zusammenhangs zwischen der Landschaftsstruktur und dem Vorkommen dreier Vogelarten." Bachelor's thesis, Hochschule für Technik und Wirtschaft Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:520-qucosa-211816.
Повний текст джерелаWillson, Nicky-Lee. "Identification of biological factors that can be consistently linked to performance variation in modern commercial broiler flocks." Thesis, 2017. http://hdl.handle.net/2440/119649.
Повний текст джерелаThesis (Ph.D.) -- University of Adelaide, School of Animal and Veterinary Sciences, 2017
Vangchhia, Belinda Lallawmkimi. "Genetic structure and antimicrobial resistance of foodborne Escherichia coli in Australia." Phd thesis, 2017. http://hdl.handle.net/1885/144610.
Повний текст джерелаCosta, Patrícia Raquel Candeias de Amorim. "Diferenças na ossificação entre galinhas de aptidão carne e galinhas de aptidão dupla." Master's thesis, 2019. http://hdl.handle.net/10437/9444.
Повний текст джерелаAs lesões ósseas em frangos de carne têm sido um assunto amplamente estudado ao longo dos anos. O principal factor apontado como causa destas lesões é a contínua selecção genética a que as estirpes de carne foram submetidas ao longo dos anos, com o objectivo de aumentar a taxa de crescimento, a qualidade e composição da carcaça. Este estudo teve como objectivo averiguar as diferenças histológicas na ossificação de ossos longos em frangos de aptidão carne em relação a uma estirpe de aptidão dupla, que possam ajudar a explicar a maior incidência de lesões ósseas em estirpes de frangos de carne. Foram utilizados ambos os membros posteriores de 50 frangos Cobb 500 na idade de abate (50-55 dias, média de 1,5 kg), perfazendo um total de 100 membros posteriores e de 5 exemplares da estirpe ISA brown (42-49 dias de idade e média de 700g), perfazendo um total de 10 membros posteriores. Foram colhidas secções longitudinais da epífise proximal do fémur, incluindo a respectiva cartilagem articular, que foram fixadas em formol tamponado a 10%. Estas foram posteriormente descalcificadas utilizando uma solução comercial e processadas para análise histopatológica. As diferentes zonas de ossificação da epífise proximal do fémur foram divididas em cinco camadas: cartilagem articular / zona de reserva, zona de proliferação, zona hipertrófica, zona de ossificação superficial (> 30% de matriz ossificada) e zona de ossificação profunda (< 30% de matriz ossificada). Estas foram medidas em relação à espessura total do centro de ossificação da cabeça femoral utilizando software apropriado e os dados obtidos subsequentemente tratados estatisticamente. Foram encontradas diferenças estatisticamente significativas (para um intervalo de confiança de 95%) entre a zona hipertrófica e a zona de ossificação profunda entre ambas as estirpes testadas, sendo a zona hipertrófica consideravelmente mais extensa e a zona de ossificação profunda notavelmente menor no grupo de galinhas de aptidão carne. Este estudo indica que as estirpes de carne, que são preferidas pelo seu crescimento rápido e elevado ganho de peso, tendem a repousar consideravelmente mais peso em ossos que se encontram fragilizados por possuírem uma camada mais espessa de cartilagem hipertrófica (pobre em matriz extracelular) e osso apenas parcialmente ossificado, comparativamente à estirpe de crescimento mais lenta usada para comparação.
Bone damage in broilers has been a widely studied subject over the years. The main cause for bone alteration of this is the continued genetic selection that broiler lines have been subjected to throughout the years, with the purpose of increasing growth performance and carcass quality and composition. This study aimed to investigate histological differences in the ossification of long bones in broiler strains, compared to a dual-purpose strain, which might help explain the higher incidence of bone lesions in broiler lines. Both hind limbs from 50 Cobb 500 birds at slaughter age (50-55 days, average 1.5kg) and 5 ISA brown exemplars (42-49 days and average 700g) were used. Longitudinal sections of the femoral proximal epiphysis and respective articular cartilage were collected and fixated in 10% buffered formalin, subsequently decalcified using a commercial solution and later routinely processed for histopathological analysis. The different ossification zones of the femoral epiphysis were divided into five layers: joint/reserve cartilage, proliferation zone, hypertrophic zone, superficial ossification zone (>30% ossified matrix) and deep ossification zone (<30% ossified matrix). These were measured against the total thickness of the femoral head ossification center using appropriate software and the obtained data statistically analyzed. Comparison between the thickness of the various layers of ossification in the dual purpose and the broiler group resulted in statistically significant differences (95% confidence interval) between the hypertrophic zone and the deep ossification zone of the samples tested, the hypertrophic zone being considerably more extensive, and the deep ossification zone being notably smaller in the broiler group. This study indicates that broiler strains, which are prefered for their fast growth and weight gain will tend to rest considerably more weight on bones that are more fragile due to a thicker layer of hypertrophic cartilage (poor in extracelular matrix) and only partially ossified bone, in comparison to the slower growth strain.
Lai, Melody Man Ching. "Chemical properties and sensory attributes of poultry meats from birds fed diets containing ginseng prong." Thesis, 2000. http://hdl.handle.net/2429/10689.
Повний текст джерелаBradley, Michelle. "What does it mean to be a “monkey-bird"?: mixed-race students’ educational experiences in the Manitoban K-12 public education system and their sense of identity." 2017. http://hdl.handle.net/1993/32031.
Повний текст джерелаFebruary 2017
Mesquita, Ricardo Jorge Mendes. "A Novel Path Planning Optimization Algorithm for Semi-Autonomous UAV in Bird Repellent Systems Based in Particle Swarm Optimization." Master's thesis, 2021. http://hdl.handle.net/10400.6/11817.
Повний текст джерелаAnualmente, os danos causados pelas aves em pomares criam perdas monetárias significativas aos agricultores. A aplicação de métodos tradicionais de dispersão de aves, como canhões repelentes de aves e redes nas árvores, torna-se ineficiente a longo prazo, sendo ainda de alta manutenção e de mobilidade reduzida. Devido à sua versatilidade, os Veículos Aéreos Não Tripulados (VANT) podem ser benéficos para resolver este problema. No entanto, devido à baixa capacidade das suas baterias, que se traduz num baixo tempo de voo, é necessário otimizar o planeamento dos caminhos. Nesta dissertação, é apresentado um algoritmo de otimização para planeamento de caminhos para VANT baseado no Particle Swarm Optimization (PSO). Para se iniciarem os primeiros testes do algoritmo proposto, a técnica utilizada foi a supracitada devido à necessidade de um algoritmo de otimização fácil de implementar. O algoritmo PSO é simples e possuí poucos parâmetros de controlo, mantendo um bom desempenho. Este algoritmo de otimização de planeamento de caminhos propõe-se a gerir a distância e o tempo de voo do drone, aplicando técnicas de otimização e de aleatoriedade para superar a sua desvantagem relativamente aos sistemas tradicionais. O desempenho do algoritmo de planeamento de caminhos foi testado em três casos de estudo: dois deles em simulação para testar a variação de cada parâmetro e outro em campo para testar a capacidade da bateria. Todos os casos foram testados nas três situações possíveis: mesma taxa de incidência, taxas diferentes e taxas diferentes sem danos de aves. Os resultados apresentados pelo algoritmo proposto demonstram um erro médio muto reduzido na distância total para o planeamento de caminhos obtido e baixo tempo de execução. Porém, é necessário destacar que o algoritmo pode ter dificuldade em encontrar uma solução adequada se houver uma má relação entre a distância total para o planeamento de caminhos e os pontos de interesse. Os testes de campo também foram essenciais para entender o comportamento do algoritmo na prática, mostrando que há menos energia consumida com menos pontos de interesse, sendo que este parâmetro não se correlaciona com o tempo de voo. Além disso, não há associação entre a velocidade horizontal máxima e o tempo da missão, o que significa que a função de cálculo da distância total para o planeamento de caminhos requer ser ajustada.
Müller, Thomas. "Untersuchung des Zusammenhangs zwischen der Landschaftsstruktur und dem Vorkommen dreier Vogelarten: eine GIS-gestützte Überprüfung der Ansprüche der Feldlerche Alauda arvensis, des Neuntöters Lanius collurio und des Schwarzspechts Dryocopus martius an die Landschaft." Bachelor's thesis, 2015. https://htw-dresden.qucosa.de/id/qucosa%3A23303.
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