Relevant bibliographies by topics / Technology in sheep production

Academic literature on the topic 'Technology in sheep production'

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Published: 10 December 2022
Last updated: 19 February 2023

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Journal articles on the topic "Technology in sheep production"

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Maxwell, T. J., Mary D. Lloyd, and I. A. Dickson. "Upland sheep production systems." BSAP Occasional Publication 10 (1985): 95–105. http://dx.doi.org/10.1017/s0263967x00030780.

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AbstractUpland sheep production systems based on the utilisation of enclosed sown pastures are considered in relation to environmental constraints, recent trends in marketing requirements and a continuing need to improve economic efficiency. The need for quantitatively described decision making in relation to both the testing, development and application of new technology is discussed with particular reference to those factors influencing herbage growth, utilisation and management.Relatively few upland farms are capable of producing marketable fat lambs before the decline in returns per kg lamb in June. Although higher returns for heavier fat or store lambs can be obtained in the autumn, the degree to which this maximizes the returns per ha will be dependent upon the stocking rate and ewe and lamb performance during the summer. It will also be dependent on the extent to which there is competition for pasture in the autumn and its effect on ewe live weight and condition during the pre-mating and post-mating period; weight and condition will affect reproductive performance which has a substantial effect on returns per ha.The significance of sward height as a means of controlling the performance of sheep grazing sown pastures is reviewed in relation to ongoing and completed systems experiments and development projects. It is concluded that, for practical purposes, a sward height held between 3.5 and 5.5 cm will provide a sound basis for management of the lactating ewe and suckling lamb until weaning. The means of achieving sward height control in varying farming situations and the development of commercially viable management systems is considered.In the development of systems towards improving production efficiency, a better description of responses to both level and pattern of N used is required. The need for a better understanding of responses of the ewe in terms of ovulation rate and embryo wastage to changing sward characteristics in the autumn and to the use of supplementary feeding is also required. New techniques, such as the endocrine manipulation of reproductive performance, need to be assessed in relation to existing practices and performance.
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Hindson, J. C. "Sheep health: husbandry and production problems." BSAP Occasional Publication 14 (January 1990): 93–97. http://dx.doi.org/10.1017/s0263967x00002081.

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AbstractThe paper is based on problems found in a large ‘farm animal’ practice in Devon, in which the author is largely committed to the sheep work. There are some 80 000 sheep in the area, and some 1·5 million in the county of Devon which are kept under varying conditions from the high areas of Dartmoor to the very intensive flocks on permanent grass on heavy soils. A brief look is made at the effects of health research over the last 50 years in the context of present problems and/or barriers to future efficiency. Also present production problems are examined, in particular those relating to coccidiosis and ‘ill thrift’. The problems of the field application of modern technology are considered in the areas of: (1) manipulation of the breeding season, in an attempt to even out the production curve, using sponges, PMS and melatonin and teaser rams; (2) manipulation of prolificacy, using fecundin and prolific hybrids; and (3) genetic manipulation/improvement, using Meat and Livestock Commission backfat/eye muscle recording schemes, sire referencing, AI and MOET.A scheme for the best utilization of veterinary surgeon/farmer relationship is outlined and mention is made as to the future direction of the industry as seen from the ‘sharp end’.
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Hudson, P. R. W. "High Technology Options for Sheep Shearing: Improved Shearing Devices." Outlook on Agriculture 15, no. 4 (December 1986): 218–24. http://dx.doi.org/10.1177/003072708601500408.

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Wool production is a very important factor in the Australian economy, representing $3 billion in exports. Nevertheless, rising production costs and growing competition from manmade fibres necessitate increased attention to all aspects of productivity if the industry worldwide is to remain viable. As some 80 per cent of labour content is involved in harvesting wool, improvements in the shearing process potentially offer particular opportunities for economies. This article reviews the results of a widely based Australian research programme which has investigated the fundamental physics of wool severance, especially in terms of energy requirement, leading to improved design of shearing devices incorporating more efficient motors and novel cutter materials. Subsequent articles will review the process of automated mechanical shearing and chemical and biological defleecing.
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Morris, Jessica E., Greg M. Cronin, and Russell D. Bush. "Improving sheep production and welfare in extensive systems through precision sheep management." Animal Production Science 52, no. 7 (2012): 665. http://dx.doi.org/10.1071/an11097.

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This overview discusses how precision sheep management could be utilised in the Australian sheep industry to improve production efficiency and reduce animal welfare concerns due to low monitoring frequency by stockpeople. The concept of precision sheep management is described. This is a system in which sheep are managed as individuals or small groups rather than as a (whole) flock. Precision sheep management utilises the application of radio frequency identification technology, enabling producers to better monitor sheep in extensive situations, and contribute to improved efficiency of management and sheep welfare. Examples of combining radio frequency identification with other technologies such as walk-over-weighing and Pedigree Matchmaker are discussed. These technologies provide producers with tools to improve the cost effectiveness of, and labour efficiency associated with, collecting data on individual animals. The combined technologies should also improve consistency and reliability of information, enhancing decision-making by producers, for example, from regular monitoring of biometric variables such as liveweight, or calculating breeding values to enable superior genetic comparisons over time.
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Petrovic, Milan, M. M. Petrovic, Dragana Ruzic-Muslic, M. Zujovic, S. Pejcic, and N. Delic. "Innovation of extensive system for milk production on Stara planina mountain." Biotehnologija u stocarstvu 23, no. 1-2 (2007): 21–29. http://dx.doi.org/10.2298/bah0702021p.

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In the last decades, old production technology used on farms on mountain of Stara planina was the reason why milk production wasn't profitable activity and therefore livestock production had collapse. In this paper current situation is analyzed and new knowledge introduced in production of sheep and cow milk on farms located in that region. The analysis of breed structure shows that in population of Pirot Pramenka sheep and local Simmental population of cattle, effects in milk production are rather poor. Introduction of modern knowledge of milk production would considerably increase the milk yield of sheep and cows and motivate the rural population to revive dairy livestock production. Through application of new solutions regarding of breeding and farm organizations, milk yield in sheep was increased per head by 8-15%, and quantity of milk in cows was increased by 10-16%. Also the health condition of the udder was improved and somatic cell count was reduced within the limits regulated by law.
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Chuchu, Simon Mwangi, and James Rugami Maina. "Value Chain Support Activities and Performance of Sheep Production Projects in Nyandarua County, Kenya." International Journal of Business Management, Entrepreneurship and Innovation 3, no. 1 (May 31, 2021): 91–103. http://dx.doi.org/10.35942/jbmed.v3i1.167.

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As Kenya grapples with meat deficit and reduced livestock productivity in the ASALs, sheep production in the high rainfall areas offers an opportunity to bridge the gap. Sheep and goats have many advantages over large ruminants for most farmers, including lower capital investment requirement for flock establishment, lower feed consumptions and thus lower food-related costs, high fecundity and thus faster flock building, and are easier to manage. However, sheep production still faces a myriad of challenges that result in low productivity and ultimately low returns to farmers. Projects have been designed and implemented to improve sheep productivity but with little impact. The performance of such projects in terms of timeliness, cost, budget compliance, and quality has been questioned. This research aims to assess how various value chain support activities influence the performance of sheep production projects in Nyandarua County, Kenya. Specifically, the study sought to examine the influence of firm infrastructure assess the influence of human resource management, explore the influence of technology development, and evaluate the influence of procurement on the performance of sheep production projects in Nyandarua County, Kenya. Value chain support activities are the independent variable while the dependent variable is the performance of sheep production projects. The theories that support this study are Capability-Based View, Knowledge-Based View, Resource-based view, and Market-Based View. Descriptive design was used to conduct the study whose population was drawn from sheep production value chain stakeholders in the county, whose population is estimated at 596, 268. A sample size of 271 stakeholders were reached. Qualitative data was analyzed using content analysis while descriptive statistics were used to analyze quantitative data. Descriptive and inferential statistics were used in analyzing the data. Results were presented in form of tables, percentages, bar charts, and graphs. The study found that effective leadership styles has a positive influence on employees’ motivation and morale and contribute positively to organizational and sheep production projects performance. At the same time, human capital planning, acquisition, and development strategies have a more positive influence on organizational and sheep production projects performance than traditional strategies. Further, information technology contributes to the successful introduction of new products or services, improved operational processes and provides guidance to decision making on project implementation and thus affect positively project performance. Moreover, respondents approved that, procurement is a strategic function in that it not only contributes to costs reduction but also to the achievement of budgetary compliance in sheep production projects. It can, therefore, be concluded that firm infrastructure, human resource management, technological development, and procurement are all key success factors in the increased performance of sheep production projects. As part of the recommendation, players in the sheep production value chain should consider adequately investing in firm infrastructure, human resource management, technological development, and procurement. They should also be guided by effective leadership styles that will yield the desired outcome through a positive influence on employees' motivation and morale while exercising human capital planning, acquisition, and development strategies to enhance organizational performance.
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Shi, Ruijun, Shuwei Li, Penggang Liu, Shuhui Zhang, Zhenhui Wu, Tinghui Wu, Shujuan Gong, and Yu Wan. "Identification of key genes and signaling pathways related to Hetian sheep wool density by RNA-seq technology." PLOS ONE 17, no. 5 (May 25, 2022): e0265989. http://dx.doi.org/10.1371/journal.pone.0265989.

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Hetian sheep is a breed of sheep unique to the Hetian area of Xinjiang whose wool is used for producing blankets. Individual differences and hair follicle density are the key factors affecting wool production. Therefore, this study aimed to assess the Hetian sheep having different wool densities to statistically analyze the wool traits and hair follicle parameters. Furthermore, the transcriptome sequencing analysis was performed on the skins with different wool densities. The results showed that wool quantity and total hair follicle density of the high wool density sheep was significantly higher than low wool density sheep. The sheepskin with high wool density was found to grow more and finer wool than sheepskin with low wool density. A total of 1,452 differentially expressed genes were screened from the two sets of samples, including 754 upregulated and 698 downregulated genes. The differentially expressed genes were involved in the TGF-β/BMP and MAPK signaling pathways related to hair growth. Eleven differentially expressed genes belonging to the KAPs and KIFs might affect the fineness of the wool. The key genes, like the TNF, MAP2K2, INHBA, FST, PTPN11, MAP3K7, KIT, and BMPR1A, were found to probably affect the growth and density of the wool. The qPCR verified eight genes related to the MAPK pathway whose gene expression trends were consistent with the transcriptome sequencing results. This study furnishes valuable resources for enhancing the quality and production of wool in the Hetian sheep.
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Cividini, A., and D. Kompan. "Analysis of rearing technology used by sheep breeders in Slovenia." Biotehnologija u stocarstvu 27, no. 3 (2011): 1097–103. http://dx.doi.org/10.2298/bah1103097c.

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In Slovenia low and medium production systems are prevalent in sheep breeding. The rearing technology depends on a large number of factors. The main factors affecting the choice of rearing technology are sheep breed, local conditions, season of mating and weaning time. In the present study the rearing technology in sheep breeding was analyzed. This analysis included the results of 293 questionnaires from sheep breeders of autochthonous Jezersko-Solcava and Improved Jezersko-Solcava breed. Data were subjected to the frequency analysis, using the FREQ procedure of the SAS Statistical Software (1990). The population size in the flocks of these breeders was mostly from 5 to 50 animals (73.3%). The lambing system is year-round (80%) and seasonal (7.5%). The wanted litter size of 47% of breeders is just one live born lamb. Breeders weaned their lambs at 60-90 days of age or even later. Lambs stayed with their mothers almost till the end of lactation (16-20 weeks) or till the sale to the market when they weighted 30-35 kg. Early spring and summer born lambs stayed with their mothers on the pastures with no supplement. Winter born lambs stayed with their mothers in the stable, fed by hay and supplement (cereals or commercial concentrate). The rearing technology used by Slovenian sheep breeders is sustainable and gives the opportunity for conservation of autochthonous breeds in the original environment.
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Lubko, Dmytro. "Design of a reference intelligence expert system for sheep breeding in national private farms." Ukrainian Journal of Educational Studies and Information Technology 5, no. 3 (September 30, 2017): 1–18. http://dx.doi.org/10.32919/uesit.2017.03.01.

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The paper deals with the design of a reference intelligence expert system for sheep breeding. The process of its design and its functional capabilities are described. The developed reference intelligence expert system makes it possible to display recommendations and tips on the computer screen to select a rational and effective sheep breeding technology, as well as to print the received data. The developed system has a two-tier structure, namely, dialog selection of input criteria (data), as well as a module for logical processing and output of reasonable technology recommendations (output data). The step-by-step method of designing the system is determined. The first step is to obtain a technical specification from the customer (farm, enterprise, farmer, etc.) for the development of a reference system. The second step is to determine criteria for the technology in keeping with the farm requirement specification according to the literature and sheep breeding requirements. The third step is to identify the most important factors influencing the process of sheep raising for each of these criteria. The fourth step is to define the main production rules for which the system will be programmed, namely, the module for logical knowledge processing for this technology (and these are the input parameters (factors) when designing the system). The fifth step is to determine the main output criteria (factors) that will be displayed after processing the input rules of the system based on logical deduction rules according to the appropriate sheep breeding technology. The sixth step is to design buttons for more convenient system usage, in addition, if necessary, or at the request of the customer (for example, a button for deleting previous information in windows, a button for storing recommendations in a separate text file, the exit button, etc.). The seventh step is to test the system by users and the customer. The eighth step is to adopt the developed system by the customer and correct it, if necessary. The ninth step is to provide maintenance of the developed system. The block of input data of the developed intelligence expert system has the following elements: a) sheep handling (pasture-stall, stall-pasture); b) sheep condition (higher condition, average condition, lower than average condition); c) sheep breeding type (meat, milk, meat and milk, wool); d) sheep feeding (meat-and-wool sheep, rams of meat-and-goat sheep, sucking females to lactation); e) methods of breeding (purebred, crossing). The block of output factors where appropriate rational recommendations for sheep breeding technology comprises: a) recommendations for sheep handling; b) recommendations for treatment of sheep diseases; c) recommendations for sheep feeding; d) sheep slaughter and storage of products; e) recommended sheep breeds; f) recommendations for sheep breeding; g) characteristics of products. The developed system is intended primarily for private national farmers or interested private householders. It is noted that the use of this system will allow private households to increase the production and quality of meat, wool, lambskin and furs when breeding sheep. This will reduce the cost of the breeding technology, save the farmer time, allow to save on medicines, feeds, which, in turn, will increase profits and profitability of farms.
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Hopkins, D. L. "Processing technology changes in the Australian sheep meat industry: an overview." Animal Production Science 51, no. 5 (2011): 399. http://dx.doi.org/10.1071/an10258.

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Over the last 20 years the Australian sheep industry, particularly the lamb meat sector, has undergone a major change in focus such that consumer requirements are a paramount determinant for production and processing developments. As a result automatic accurate methods of measuring carcasses for traits like fatness and meat yield have been important to aid a reduction by industry in carcass fat levels in line with domestic and international consumer demand. This occurred while carcass weight increased due to a range of genetic and production factors implemented on-farm. Further to this in the last 5–7 years there has been a dramatic increase in the adoption of electrical technologies based on new methodologies with a shift in focus onto eating quality. Underlying this new approach was the electrical stimulation of individual carcasses on segmented electrodes in a dose-responsive way with electricity that has short pulse widths and low to medium voltages and is thus much safer than the original high voltage systems. This technology allowed stimulation units to be fitted into abattoirs where this was not previously possible and validation showed that the technology could reduce toughness in lamb destined for the domestic market and some export markets. More recent technology to stretch and shape cuts shows promise for improving both the quality and product range from sheep and lamb carcasses. The industry continues to focus on meat quality and has shown a significant increase in exports, while maintaining per-capita domestic consumption at record retail prices. This indicates an industry where research investment across the board has shown significant returns.
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Dissertations / Theses on the topic "Technology in sheep production"

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Kumalo, Molefi Petrus. "Characterization of sheep and goat production systems amongst small-scale farmers in the Southern Free State." Thesis, Bloemfontein : Central University of Technology, Free State, 2014. http://hdl.handle.net/11462/266.

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Vos, Pieter Johannes Andreas. "The effect of supplementary light on the productive performmance of dorper lambs fed intensively." Thesis, Bloemfontein : Central University of Technology, Free State, 2010. http://hdl.handle.net/11462/25.

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Thesis (M. Tech.) - Central University of Technology, Free State, 2010
The objective of this research study was to quantify the differences in average daily gain (ADG), back fat thickness (BFT), eye muscle area (EMA), fat thickness (FT) on different body parts, the feed conversion ratio (FCR) and body dimensions (by means of body measurements) of Dorper lambs exposed to supplemented light. For this study 120 Dorper lambs (115 ± 10 days old) weighing (29.76 ± 5.01kg) were used. The lambs were randomly divided into three homogeneous groups (20 castrated and 20 intact males). The three groups were then exposed to different levels of supplemented light at 145 lux (16h, 24h and normal photoperiod). The animals were fed ad libitum with pellets containing 9.5 MJ ME/kg DM and 12% CP in open pens. The animals were weighed every 7 days while ultrasound scanning of the EMA and the BFT was done at the beginning and the end of the 35 day trial. The ADG, FCR and feed intake (FI) were calculated at the end of the trial. Linear body measurements including shoulder height, body length and heart girth were taken at day 1 and day 35 respectively. All the animals were slaughtered at the end of the trail. The carcasses were then weighed, graded and the FT was measured with a caliper. The final results of the study showed that no significant differences between the three treatment groups (consisting of wethers and rams) in terms of body measurements, ultrasound scanning ADG and FCR could be detected. However, a significant difference was found between the wethers and the rams in the whole trial for ADG. The ADG of the rams exposed to 16 hours of supplemented light was significantly better than the normal photoperiod and the 24 hour light supplementation group.
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Tománek, Jiří. "Výroba součásti "Táhlo zadní"." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228385.

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The aim of this diploma thesis is to propose a production technology of a given part based on technological and economic factors. At first it is found, if the part is producible by fineblanking. The theoretical part of the diploma thesis is concerned with the description of the conventional sheet metal cutting theory, fineblanking theory and bending theory. In the practical part of the diploma thesis, four variants of cut-in plan are dealt with including the selection of the optimal one based on technological and economic calculations. It is the production of a PULL REAR iron made of the steel sheet 11 320.21, thickness of 3 mm and a production run of 75 000 pieces per year.
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Nääs, Julia, and Michaela Martinez. "Svensk ull i textilproduktion. : En studie om vilka för- och nackdelar svenska textilföretag stött på i produktion med svensk ull." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-23502.

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Majoriteten av den ull som produceras av svenska får har under flera år slängts eller bränts upp. Samtidigt importerar svenska textilföretag tonvis med ull för miljoner kronor varje år. Detta problem uppmärksammades för några år sedan och ett antal svenska företag har sedandess börjat producera produkter av den svenska ullen. I denna kvalitativa studie har en undersökning gjorts för att sammanställa för- och nackdelar med att producera textilprodukter i svensk ull. Semistrukturerade intervjuer har genomförts med tio olika företag som idag jobbar med materialet. Resultatet av studien visar att det största problemet med ullproduktion inom Sverige är bristen på en strukturerad infrastruktur inom inköp och produktion. Fördelar med att producera textila produkter i svensk ull är att det är ett materialmed goda egenskaper för flera användningsområden. Det är ett hållbart materialval då ullen annars går till spillo. Närheten till materialet underlättar även kontrollen över att helavärdekedjan sköts på ett etiskt och hållbart sätt.
The majority of the wool produced by Swedish sheep has been discarded or burned for several years. At the same time, Swedish textile companies import tons of wool for millions of swedish crowns each year. This problem was brought to attention a few years ago and a number of Swedish companies have since started to produce products from the Swedish wool. In this qualitative study, an investigation was conducted to compile the pros and cons of producing textile products in Swedish wool. Semi-structured interviews have been conducted with ten different companies that are currently working with the material. The results of the study show that the biggest problem with wool production in Sweden is the lack of an organized infrastructure in purchasing and production. The advantage of producing textile products in Swedish wool is that it is a material with good properties for several applications. It is a sustainable choice of material as the wool is otherwise wasted. The proximity to the material also facilitates the control of the entire value chain being managed in an ethical and sustainable way.
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Muzikant, Miroslav. "Výroba součásti z plechu - "Vanečka"." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229404.

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The aim of this diploma thesis is processing the new technology of production single parts from metal plate „ Vanečka", which produced is yearly set 50000 pieces. Component of made in steel S235JRG1 (ČSN 41 1373) thickness 3 and 5 mm. Based on literary search rolling cutting and bending are designed two variants of production. Both variants use for cut - out cloak and face rolling cutting close - set on press LEN 63C. Different operation is bending. First variant includes bending in the bending tool, the other on press brake. Both variants is processed economics revaluation and consequently intended transition points.
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Glorieux, Emile. "Constructive cooperative coevolution for optimising interacting production stations." Licentiate thesis, Högskolan Väst, Avd för automationssystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-7685.

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Engineering problems have characteristics such as a large number of variables, non-linear, computationally expensive, complex and black-box (i.e. unknown internal structure). These characteristics prompt difficulties for existing optimisation techniques. A consequence of this is that the required optimisation time rapidly increases beyond what is practical. There is a needfor dedicated techniques to exploit the power of mathematical optimisation tosolve engineering problems. The objective of this thesis is to investigate thisneed within the field of automation, specifically for control optimisation ofautomated systems.The thesis proposes an optimisation algorithm for optimising the controlof automated interacting production stations (i.e. independent stations thatinteract by for example material handling robots). The objective of the optimisation is to increase the production rate of such systems. The non-separable nature of these problems due to the interactions, makes them hard to optimise.The proposed algorithm is called the Constructive Cooperative CoevolutionAlgorithm (C3). The thesis presents the experimental evaluation of C3, bothon theoretical and real-world problems. For the theoretical problems, C3 istested on a set of standard benchmark functions. The performance, robustness and convergence speed of C3 is compared with the algorithms. This shows that C3 is a competitive optimisation algorithm for large-scale non-separable problems.C3 is also evaluated on real-world industrial problems, concerning thecontrol of interacting production stations, and compared with other optimisation algorithms on these problems. This shows that C3 is very well-suited for these problems. The importance of considering the energy consumption and equipment wear, next to the production rate, in the objective function is also investigated. This shows that it is crucial that these are considered to optimise the overall performance of interacting production stations.
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Chadwick, Megan. "Fetal programming of sheep for production on saltbush." University of Western Australia. School of Animal Biology, 2009. http://theses.library.uwa.edu.au/adt-WU2010.0033.

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[Truncated abstract] Saltbush is one of the few types of forage that will grow on salt affected land but, sheep struggle to maintain weight when grazing saltbush mainly because of its high salt content. Therefore, a strategy to improve salt tolerance of sheep would be beneficial to the profitable use of revegetated saline land. This could be done by manipulating the dietary salt load of pregnant or lactating ewes which could 'program', or permanently alter the physiology of their offspring to allow them to cope better with a high-salt diet as adults. When rat dams consume a high amount of salt during pregnancy, the salt balance mechanisms of their offspring are 'programmed' due to suppression of the offspring's renin-angiotensin system in early development. If this occurs in offspring from ewes grazing saltbush, beneficial adaptations may be programmed in these offspring which could allow them to better cope with the high-salt content of saltbush. I tested the general hypothesis that offspring born to ewes that consumed a high-salt or saltbush diet from mid-pregnancy to early lactation would have an increased capacity to cope with salt that would allow them gain weight when grazing saltbush in later life. To test this hypothesis, I pair-fed ewes either a high-salt diet (14% NaCl) or control diet (2% NaCl) in an animal house from day 60 of gestation until day 21 of lactation. During the same period, I also conducted a field experiment where ewes grazed on saltbush (supplemented with barley) or on pasture (supplemented with lupins). ... This led to the high-salt offspring retaining more salt than control animals. In contrast, the renin activity of saltbush was consistently lower than pasture offspring which allowed them to excrete salt more rapidly. In experiment three, the saltbush offspring gained tissue weight after grazing saltbush for 8 weeks, whereas the offspring in the other three treatments lost weight. High-salt and saltbush offspring also had higher greasy fleece weights at 22 months of age than their respective control groups. Feeding saltbush to ewes from mid-pregnancy to early lactation induces physiological adaptations in their offspring that allow them to cope better with salt and gain weight when grazing saltbush as adults, supporting my hypothesis. However, contrary to expectations, the high-salt offspring did not gain weight when grazing saltbush because their physiological adaptations, such as salt retention, did not allow them to cope better with a salt load. The reason that saltbush offspring showed different adaptations to highsalt offspring is likely to be because saltbush contains not only NaCl but also high amounts of other minerals such as potassium, and other plant compounds, which may influence the adaptive responses of the offspring. This research has direct implications for farmers because it shows they could utilize otherwise unproductive saltland by grazing pregnant ewes on saltbush to 'program' their offspring to gain weight when they graze saltbush later in life.
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Fannon-Osborne, Amy Gail. "Hair Sheep Production in Temperate, Deciduous Appalachian Silvopastures." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/76825.

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Silvopastoral management has potential to diversify and increase the output from livestock production systems. Silvopasture production offers solutions to many management issues associated with grazing systems in the Appalachian region. Several tree species have been proposed for silvopastures in humid temperate regions, but little data comparing animal performance from systems with different deciduous tree species are available. Forage and animal performance was compared from open systems (i.e., no trees) with that from silvopastures containing 13-yr-old honeylocust (Gleditsia triacanthos) or black walnut (Juglans nigra) trees. Cool-season grass-legume pastures were rotationally stocked with hair sheep crosses from mid-June through September. The objective of this project was to determine carcass characteristics and meat quality of hair sheep crosses grazing honey locust or black walnut silvopastures in comparison with traditional pasture systems. Forage production varied by year with black walnut having lower production, especially in the 2009 season with black walnut producing less forage compared to open pastures and honeylocust silvopastures (P=0.0008). Only small differences in forage nutritive value were observed. Total gains and average daily gains (ADG) did not differ by treatment in 2008, but during the 2009 season black walnut silvopastures produced half the total gains (P=0.0427) and ADG (P=0.0513) of open pastures and honeylocust silvopastures. Carcass characteristics evaluated did not vary among treatments except hot carcass weight with black walnut having lower weights (P=.0045). Meat quality characteristics did not vary among treatments (P>0.1). Shear force and fat content showed great differences and varied by year (P<0.05). Overall, carcass and meat quality was similar for all treatments showing great promise for silvopastures.
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Campbell, Angus John Dugald. "The effect of time of shearing on wool production and management of a spring-lambing merino flock /." Connect to thesis, 2006. http://eprints.unimelb.edu.au/archive/00003254.

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Saatchi, Mustafa. "Genetic parameters of production traits in Welsh mountain sheep." Thesis, Bangor University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263274.

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Books on the topic "Technology in sheep production"

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Canada. Dept. of Agriculture. Research Branch. Research and technology for increasing the efficiency and output of lamb production systems. S.l: s.n, 1987.

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Bhat, P. N. Sheep production. New Delhi: Studium Press, India, 2009.

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Croston, David. Planned sheep production. London: Collins Professional and Technical Books, 1985.

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Learning, Alberta Alberta. Sheep production technician. Edmonton]: Alberta Learning, 2000.

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Connolly, L. Sheep production 1997. Dublin: Teagasc, 1997.

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Croston, David. Planned sheep production. 2nd ed. Oxford [England]: Blackwell Scientific Publications, 1993.

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Croston, David. Planned sheep production. London: Collins, 1985.

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Sheep production and management. Englewood Cliffs, N.J: Prentice Hall, 1989.

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D, Scheer H., and Alberta Alberta Agriculture, eds. Alberta sheep production manual. Edmonton, Alta: Print Media Branch, Alberta Agriculture, 1985.

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Sheep research, production & marketing in India. New Delhi, India: Inter-India Publications, 1988.

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Book chapters on the topic "Technology in sheep production"

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Randman, D., B. Davis, M. L. Alderman, G. Muralidharan, T. R. Muth, W. H. Peter, and T. R. Watkins. "Production of wide shear-rolled magnesium sheet for part forming." In Magnesium Technology 2012, 23–28. Cham: Springer International Publishing, 2012. http://dx.doi.org/10.1007/978-3-319-48203-3_5.

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Randman, D., B. Davis, ML Alderman, G. Muralidharan, TR Muth, WH Peter, and TR Watkins. "Production of Wide Shear-Rolled Magnesium Sheet for Part Forming." In Magnesium Technology 2012, 23–28. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118359228.ch5.

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Briesenick, David, Mathias Liewald, Ranko Radonjic, and Celalettin Karadogan. "Enhanced accuracy in springback prediction for multistage sheet metal forming processes." In Production at the leading edge of technology, 111–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-60417-5_11.

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Stockburger, Eugen, Hendrik Wester, Johanna Uhe, Kai Brunotte, and Bernd-Arno Behrens. "Investigation of the forming limit behavior of martensitic chromium steels for hot sheet metal forming." In Production at the leading edge of technology, 159–68. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-60417-5_16.

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Geiger, Manfred, Marion Merklein, and Massimo Cojutti. "Integrated Tube and Double Sheet Hydroforming Technology - Optimised Process for the Production of a Complex Part." In Sheet Metal 2007, 477–84. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-437-5.477.

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Möllensiep, Dennis, Marvin Ohm, Denis Daniel Störkle, and Bernd Kuhlenkötter. "Experimental validation of smoothed machine learning-based parameterization of local support in robot-based incremental sheet forming." In Production at the leading edge of technology, 483–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-60417-5_48.

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Kurz, G., T. Petersen, I. Portugal Gonzales, R. Hoppe, J. Bohlen, and D. Letzig. "Substitution of Rare Earth Elements in Magnesium Alloys for the Sheet Production Via Twin Roll Casting." In Magnesium Technology 2016, 377–82. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48114-2_72.

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G., Kurz, Petersen T., Portugal Gonzales I, Hoppe R., J. Bohlen, and Letzig D. "Substitution of Rare Earth Elements in Magnesium Alloys For The Sheet Production Via Twin Roll Casting." In Magnesium Technology 2016, 375–82. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119274803.ch72.

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Malik, Pradeep Kumar, Bhoomika S. Bakshi, Veerasamy Sejian, Patrik R. Zimmerman, M. Kurihara, and Raghavendra Bhatta. "Methane Estimation Methodologies in Sheep." In Sheep Production Adapting to Climate Change, 267–90. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4714-5_12.

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DuBoff, Bruce. "Black Sheep Prevail." In Lessons in Leadership in the Field of Educational Technology, 97–102. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-29501-1_15.

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Conference papers on the topic "Technology in sheep production"

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"Dorper sheep development in Indonesia." In Technology Innovations and Collaborations in Livestock Production for Sustainable Food Systems. IAARD Press, 2021. http://dx.doi.org/10.14334/proc.intsem.lpvt-2021-p.4.

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Rahayu, Puji, Iif Syarifah Munawaroh, and K. Elok. "Comparison of Heavy Metal Residues on Sheep That Grazing in Landfill Area Before and After Elimination Process." In Proceedings of International Seminar on Livestock Production and Veterinary Technology. Indonesian Center for Animal Research and Development (ICARD), 2016. http://dx.doi.org/10.14334/proc.intsem.lpvt-2016-p.319-326.

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Kobren, Robin, and John F. Jordon. "Best practice quality control in solar module back sheet production." In SPIE Solar Energy + Technology, edited by Louay A. Eldada. SPIE, 2012. http://dx.doi.org/10.1117/12.929942.

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Horsky, Thomas N., Sami K. Hahto, and Tetsuro Yamamoto. "Novel Ion Source for the Production of Extended Sheet Beams." In 2016 21st International Conference on Ion Implantation Technology (IIT). IEEE, 2016. http://dx.doi.org/10.1109/iit.2016.7882899.

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Donhauser, Christian, Franz Josef Lenze, and Hartwig Rösen. "Production of Autobody Components with Hydromechanical Sheet Forming (AHU®)." In International Body Engineering Conference & Exhibition and Automotive & Transportation Technology Congress. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2002. http://dx.doi.org/10.4271/2002-01-2026.

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Draugelates, Ulrich, Martin Hillebrecht et al., and Eckart Doege et al. "Collaborative Research Center SFB 362 “Sheet Metal Technology” - Processes for Production and Applications." In International Body Engineering Conference & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1998. http://dx.doi.org/10.4271/982373.

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KHANH, LE, NGUYEN NGOC, NGUYEN TAN, and NGUYEN THANH. "Research On The Effect Of Heating On The Formability Of Titanium By Incremental Sheet Forming Technology." In Fifth International Conference On Advances in Mechanical, Aeronautical and Production Techniques - MAPT 2016. Institute of Research Engineers and Doctors, 2016. http://dx.doi.org/10.15224/978-1-63248-090-3-42.

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Zemke, Peter E., Byard D. Wood, Daniel J. Dye, David J. Bayless, and Jeff D. Muhs. "Economic Analysis of a Vertical Sheet Algal Photobioreactor for Biodiesel Production." In ASME 2007 Energy Sustainability Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/es2007-36055.

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The combination of a 100% increase in diesel fuel prices since 2002 and a new photobioreactor technology has renewed interest in producing biodiesel, a direct petroleum diesel fuel substitute, from microalgae. A new photobioreactor technology in which the microalgae are grown on vertically suspended membranes promises to increase algal productivity per acre ten-fold compared to microalgae ponds, and 400-fold compared to soybeans. This paper describes the general photobioreactor concept and assesses the economic viability of such technology given the current crude oil prospects. The majority of the data necessary for assessment are obtained from published articles, with experimental results providing the remaining necessary information. Analysis results indicate that the photobioreactor would need to be constructed and operate on the order of dollars per square foot per year.
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Kosˇtˇa´lova´, Miroslava, and Sva¨topluk Mecˇiar. "Forming Line Design for Hooks Production." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-25263.

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The article points out on new trends in the bending technology, elimination possibilities of defects originating in bending and it deals with designing of forming line for hooks production by bending technology. It was suggested change of previous manner of production and material of produced bearing hooks as well. In previous manner of production the unfinished surface of semi product in form of roll sheet was galvanic zinc coated, it was thereafter sheared on needed length with shearing machine, followed punching in fixture, roll bending by sequence bending by help of fixture. Suggested forming line is dedicated for processing of zinc coated roll strip in automation production cycle. Forming line enables the automation work flow which includes the uncoiling of strip, feeding and leveling of strip, punching of holes and shearing of strip, roll bending of pressed part, repeated feeding of strip by leveler. Forming line consists of two-sided uncoiler without drive, feeding leveler, block of forming tools, rotary roll head. It is possible to set production of hook according to required dimensions, forming line is able to produce several dimensions of hooks with several numbers of holes. The bearing hooks from suggested original zinc coated roll strip have higher surface quality without defects. Production innovation with feeding of automation in comparison to previous manner of production enables savings of four or five workers, increasing number of produced parts per hour, to achieve repeated pressed part precision,, less manual work, increasing operation safety, minimized noise level, reducing of production costs and production of time.
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Karin, Ivan, Nils Lommatzsch, Klaus Lipp, Volker Landersheim, Holger Hanselka, and Andrea Bohn. "Applications for a New Production Technology: Analysis of Linear Flow-Split Linear Guides." In ASME 2012 11th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/esda2012-82296.

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Within the collaborative research centre 666 “Integral Sheet Metal Design with Higher Order Bifurcations” the innovative manufacturing technologies linear flow-splitting and linear bend-splitting are researched that allow the continuous production of multi-chambered steel profiles in integral style. The massive forming processes create an ultra-fine grained microstructure in the forming area that is characterized by an increased hardness and lower surface roughness compared to as received material. These properties predestine the technology to be used in the production of linear guides. Additionally, the multi-chambered structure of the linear flow-split and -bend components can be used for function integration. To design and evaluate linear guides that use the whole technological potential, the research is focused on a macroscopic and a microscopic point of view. The macroscopic approach is targeting the development of linear flow-split linear guides with integrated functions to provide additional performance values to the established machine parts. Continuously produced guidance systems with innovative functionality can be introduced to a new market with the technology push approach. Preliminary designs of linear flow-split guidance systems and integrated functions are promising. Therefore, an approach to develop new functions for linear flow-split linear guides basing on calculation models and property networks is shown [1]. With this approach, optimized solutions can be created and possible design modifications can be derived. In this contribution, the development and integration of a clamping function for decelerating the slide is presented. Calculation models for analyzing the functionality are presented and validated by finite element models and experiments. The microscopic examination of the profiles aims to investigate the material behavior, particularly of the formed areas. Beside the conventional mechanical and fatigue properties of linear flow-split material ZStE500 [2], the present work focuses on the rolling contact fatigue. This is necessary to evaluate linear flow-split components regarding their eligibility with regard to the rolling contact fatigue behaviour. The Hertz theory for rolling contact fatigue is only valid for homogeneous materials [3]. The flow-split material ZStE500 shows a non-homogeneous behaviour and has to be analyzed with the Finite Element Method in order to determine stresses and strains. In comparison to simulation results with unformed and therefore homogeneous material, the effect of linear flow-split surfaces on the rolling contact behavior is demonstrated. Based on these results, it is possible to start experimental investigations on rolling contact fatigue of linear flow-split components to validate the FE model and determine the performance of linear flow-split flanges for rolling contact fatigue.
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Reports on the topic "Technology in sheep production"

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Morrical, Daniel G., and L. James Secor. McNay Sheep Flock Production Parameters. Ames: Iowa State University, Digital Repository, 2006. http://dx.doi.org/10.31274/farmprogressreports-180814-585.

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Spencer, Thomas E., Elisha Gootwine, Arieh Gertler, and Fuller W. Bazer. Placental lactogen enhances production efficiency in sheep. United States Department of Agriculture, December 2005. http://dx.doi.org/10.32747/2005.7586543.bard.

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The key objectives of this BARD project were to: (1) study long-term effects of immunization of prepubertal ewes against recombinant ovine placental lactogen (roPL) on subsequent birth weights of their lambs and their milk production; (2) optimize the anti-roPL immunization protocol using adjuvant preparations acceptable to producers and regulatory agencies; and (3) determine the physiological mechanism(s) whereby immunization against oPL increases fetal growth and development and mammogenesis. These objectives were based on key findings from a previous BARD project that: (a) immunization of ewes against roPL increased lamb birth weight and ewe milk production during lactation; (b) roPL and recombinant ovine growth hormone (roGH) increased the proliferation and differentiated function of endometrial glands that, in turn, would enhance uterine secretions necessary for fetal and placental growth; and (c) exogenous roPL and roGH stimulated mammogenesis and milk production during lactation. The BARD projects address central problems in sheep production, including reproductive failure due to embryonic/fetal mortality, low birth weight of lambs especially in prolific breeds, and reduced milk yields which affect neonatal survival. The sheep placenta secretes both lactogenic (oPL) and somatogenic (oGH) hormones. The receptors for those hormones are present in the fetus and placenta as well as maternal uterus, and mammary gland. Our research has focused on determining the biological role of these placental hormones in development and differentiation of the uterus during gestation and the mammary gland during pregnancy and lactation. Studies conducted in the current BARD project indicated that the effects of anti-roPL immunization were variable in ewes and that commercially available and widely acceptable adjuvant preparations were not effective to produce high anti-roPL titers in pre-pubertal ewes. In the non-prolific Rambouillet ewe in Texas and in the Awassi and the Assaf in Israel, anti-roPL immunization increased lamb birth weight; however, the magnitude of this effect and the inherent variability precluded our ability to determine the physiological mechanism of how the immunization increases fetal growth. Collectively, our findings suggest that anti-roPL immunization is not currently feasible as an easy and efficacious tool for the producer to increase flock reproductive and production efficiency. The variability in response of individual ewes to anti-roPL immunization likely includes modifying the recombinant hormone and the type of adjuvant used for the immunization. In particular, the oPL may need to be modified to ensure maximum antigenicity in a broad range of breed types. Nonetheless, the investigators continue to collaborate on identifying fundamental mechanisms that can be improved by genetics or management to enhance the efficiency of uteroplacental function and, in turn, fetal growth and development. High prolificacy is a desirable trait in intensive sheep production systems. One of the main limitations of using prolific breeds of sheep is that increased litter size is associated with low birth weights and increased mortality of lambs. Further, low birth weight is associated with an increased propensity for adult diseases and decreased production efficiency. Indeed, our recent studies find that the birth weights of lambs born in large litters can be improved by both genetics and management. Future cooperative research will continue to focus on reproductive efficiency of sheep that have broader implications for improving production efficiency in all types of ruminant livestock.
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Bazer, Fuller W., Arieh Gertler, and Elisha Gootwine. Role of Placental Lactogen in Sheep. United States Department of Agriculture, January 2001. http://dx.doi.org/10.32747/2001.7574339.bard.

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Central problems in sheep and dairy cattle production are reproductive failure due to embryonic/fetal mortality and low birth weights, especially in prolific breeds, and reduced milk yields which adversely affect neonatal survival and economy of production. The sheep placenta expresses lactogenic (ovine placental lactogen, oPL) and somatogenic (ovine placental growth hormone, oGH) hormones. Our research has focused on the biological roles of oPL and oGH in function of the uterine endometrium during gestation and the mammary gland during pregnancy and lactation. Major conclusions were that: ( 1 ) immunization of prepubertal ewes against oPL resulted in increased birth weights of their lambs and their milk production during lactation; (2) neither oPL nor oGH had an antiluteolytic effect on uterine endometrium to affect lifespan of the corpus luteum; (3) only sequential exposure of the progesterone stimulated uterus to oIFNt and oPL or oGH increased endometrial gland proliferation and secretory protein gene expression; (4) oPL signals through a homodimer of ovine prolactin receptor (PRL-R) and heterodimer of oPRL-R and growth hormone receptor (GH-R); (5) exogenous recombinant oPL and oGH stimulated mammogenesis and milk yield during lactation; and (6) mutation of oPL and oGH was used to define specific biological effects and a rational basis for design of a specific receptor agonists or antagonists. This project was very productive in elucidating basic biological effects of oPL and oGH on intracellular signal transduction pathways, uterine development and secretory function, as well as mammogenesis and lactogenesis. We determined that immunization of prepubertal ewes against roPL increased birth weights of their lambs, especially those born as twins and triplets, as well as enhanced lactational performance. These studies significantly extended our knowledge of uterine and fetal-placental physiology and provided a foundation for new strategies to enhance reproductive and lactation efficiency. Based on these results, the major achievements were: 1) creation of a practical and cost effective management tool for producers to increase reproductive performance, neonatal survival, and milk yield of ewes in commercial flocks; and 2) define, for the first time, biological effects of oPL on endometrial functions and gene expression by uterine gland epithelium.
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Lewis, Ethan. Immigration and Production Technology. Cambridge, MA: National Bureau of Economic Research, August 2012. http://dx.doi.org/10.3386/w18310.

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None, None. Hydrogen production: Overview of technology options. Office of Scientific and Technical Information (OSTI), January 2009. http://dx.doi.org/10.2172/1219572.

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Martin, Kathi, Nick Jushchyshyn, and Claire King. James Galanos, Wool Evening Suit. Fall 1984. Drexel Digital Museum, 2018. http://dx.doi.org/10.17918/6gzv-pb45.

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The URL links to a website page in the Drexel Digital Museum (DDM) fashion image archive containing a 3D interactive panorama of an evening suit by American fashion designer James Galanos with related text. This evening suit is from Galanos Fall 1984 collection. The skirt and bodice of the jacket are black and white plaid wool. The jacket sleeves are black mink with leather inserts that contrast the sheen of the leather against the luster of the mink and reduce some of the bulk of the sleeve. The suit is part of The James G. Galanos Archive at Drexel University gifted to Drexel University in 2016. The panorama is an HTML5 formatted version of an ultra-high resolution ObjectVR created from stitched tiles captured with GigaPan technology. It is representative the ongoing research of the DDM, an international, interdisciplinary group of researchers focused on production, conservation and dissemination of new media for exhibition of historic fashion.
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Van Gerpen, J., B. Shanks, R. Pruszko, D. Clements, and G. Knothe. Biodiesel Production Technology: August 2002--January 2004. Office of Scientific and Technical Information (OSTI), July 2004. http://dx.doi.org/10.2172/15008801.

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Adewumi, Michael A., M. Thaddeus Ityokumbul, Robert W. Watson, Mario Farias, Glenn Heckman, Johnson Olanrewaju, Eltohami Eltohami, Bruce G. Miller, W. Jack Hughes, and Thomas C. Montgomery. PRODUCTION WELL PERFORMANCE ENHANCEMENT USING SONICATION TECHNOLOGY. Office of Scientific and Technical Information (OSTI), December 2003. http://dx.doi.org/10.2172/825257.

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Adewumi, Michael A., M. Thaddeus Ityokumbul, Robert W. Watson, Eltohami Eltohami, Mario Farias, Glenn Heckman, Brendan Houlihan, et al. Production Well Performance Enhancement using Sonication Technology. Office of Scientific and Technical Information (OSTI), December 2005. http://dx.doi.org/10.2172/876657.

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Fort, Teresa. Technology and Production Fragmentation: Domestic versus Foreign Sourcing. Cambridge, MA: National Bureau of Economic Research, August 2016. http://dx.doi.org/10.3386/w22550.

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