Download or read book Genetic Improvement of Farmed Animals written by Geoff Simm and published by CABI. This book was released on 2020-11-26 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetic Improvement of Farmed Animals provides a thorough grounding in the basic sciences underpinning farmed animal breeding. Relating science to practical application, it covers all the major farmed animal species: cattle, sheep, goats, poultry, pigs and aquaculture species.

Download or read book The Genetics of Sheep written by Laurie Piper and published by Cabi. This book was released on 1997 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: Systematics and phylogeny of the sheep;Genetic aspects of domestication, common breeds and their origin; Genetics of colour and hair texture; Genetics of morphological traits and inherited disorders; Biochemical genetics; Molecular genetics of sheep; Molecular genetics of immune molecules; Genetics of disease resistance and vaccine response; Molecular biology and genetics of scrapie in sheep; Cytogenetics: physical chromosome maps; The sheep linkage map; Genetics of behaviour; Biology and genetics of reproduction; Modern reproduction technologies and transgenics; Developmental genetics; Genetic resources and conservation; Genetic improvement of wool production; Genetics of meat quality; Genetics of milk production; Genetic improvement of sheep; Standardized genetic nomenclature for sheep.

Download or read book Genetic Prehistory in Selective Breeding written by Roger J. Wood and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title examines the activities of sheep breeders able to transform the appearance and qualities of their stock by combining different traits of body or wool into patterns.

Download or read book International Sheep and Wool Handbook written by D. J. Cottle and published by Nottingham University Press. This book was released on 2010-05-01 with total page 775 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering a broad range of topics relevant to the sheep and wool industry, this newly expanded edition—containing 11 new chapters and a more international scope—discusses future developments in all areas and provides an in-depth review of the meat aspects of the market. Separated into five distinct sections, the comprehensive survey summarizes the major world sheep and wool industries, biological principles, management, production systems, and the preparation, processing, and marketing of meat and wool. References and web links at the end of each chapter present further sources of information. From paddock to plate and farm to fabric, this overview is a must-have for all those involved in the trade, including producers, brokers, exporters, and processors.

Download or read book Development of Aquatic Animal Genetic Improvement and Dissemination Programs written by and published by WorldFish. This book was released on 2006 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Review of sheep research and development projects in Ethiopia written by Gizaw, S., Abegaz, S., Rischkowsky, B., Haile, A., Okeyo, A.M. and Dessie, T. and published by ILRI (aka ILCA and ILRAD). This book was released on 2013-12-31 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Linear Models for the Prediction of Animal Breeding Values written by R. A. Mrode and published by Cab International. This book was released on 2014 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: The prediction of producing desirable traits in offspring such as increased growth rate or superior meat, milk and wool production is a vital economic tool to the animal scientist. Summarizing the latest developments in genomics relating to animal breeding values and design of breeding programs, this new edition includes models of survival analysis, social interaction and sire and dam models, as well as advancements in the use of SNPs in the computation of genomic breeding values.

Download or read book Genetic Improvement of Hair Sheep in the Tropics written by Raoul W. Ponzoni and published by Food & Agriculture Organization of the UN (FAO). This book was released on 1992 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Planning and organisation pf improvement programmes; Definition of the breeding objective; Genetic basis of sheep improvement programmes; Selection criteria; Performance recording, data processig and adjustment of records; Adjustment of records; Calculation, presentation and use of the information; Industry structure and dissemination of genetic gain; Populations size and genetic improvement; Techniques for increasing the rate of genetic gain; Final remarks: the future.

Download or read book Sheep and Goat Breeding written by Food and Agriculture Organization of the United Nations and published by Fao. This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: FAO economic and social development series no/ 3/12. - Designed as handbooks for 2 year intermediate level agricultural and training course. Translated and adapted from the French

Download or read book Breeding for Disease Resistance in Farm Animals written by Stephen C. Bishop and published by CABI. This book was released on 2010 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Addressing principles associated with breeding animals for enhanced health and resistance to specific diseases, this book provides a review of the field illustrated with examples covering many diseases of importance to livestock production, across all major livestock species. Authored by experts in the field, this updated edition covers techniques and approaches, viruses, TSEs, bacteria, parasites, vectors, and broader health issues seen in production systems, including metabolic diseases. The book will be an essential reference for professionals in the field, scientists and researchers, students, breeders, veterinarians, agricultural advisors and policy makers.

Download or read book An Essay on the Nature Produce Origin Extension of the Merino Breed of Sheep written by Caleb Hillier Parry and published by . This book was released on 1807 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sheep Breeding written by G. J. Tomes and published by . This book was released on 1979 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: National Sheep Industries - Structure, Breeds and Objectives. Genetic Selection and breed Improvement. Group Breeding Schemes and Stud Breeding. Reproduction in the Ewe. Male Reproduction and Artificial Insemination.

Download or read book Suitability of different Awassi lines for efficient sheep production of Bedouins in the Negev in Israel written by Anna Al Baqain and published by Cuvillier Verlag. This book was released on 2012-07-19 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary In Israel, more than half of the national sheep flock is kept by Bedouin in the Negev desert. Extensive production systems co-exist besides semi-intensive systems with varying economic success. There is a constant regional demand for sheep meat, but the local supply is not able to cover it. The wide gap between the performance potential of the commonly used and environmentally adapted local Awassi and improved sheep breeds suggests an increase in economic efficiency by intensification of breeding. The choice of a suitable breed for a specific system is seen as key factor for the farm success and requires the knowledge of the animals’ adaptation. Information on the performance of Bedouin sheep flocks under the given harsh production conditions are, however, missing. The purpose of the study was thus a characterization of current production systems, the assessment of the aggregated performance of the different Awassi lines kept in those systems and the impact of socio-economic and production factors on the efficiency of Bedouin sheep production. Also breeding objectives of Bedouin sheep farmers were investigated. The role of new breeding technologies in the ongoing process of intensification of sheep farming systems was analyzed and discussed. Data collection was step-wise with repeated field surveys from January 2007 till March 2009, lasting 6 months altogether. In a first diagnostic survey 30 Bedouin households in the Negev desert, located in two different climatic zones, arid and semi-arid, and keeping a minimum flock size of 50 animals, were visited. Households were grouped into 4 tribe groups according to location and ethnical background. In a second step, 21 households of the previous sample were visited again and grouped according to the breed composition of their flocks and by their use of hormonal synchronization and/or artificial insemination. Semi-structured interviews and participative observation yielded information about the socio-economic situation of the household, function of flocks, the livestock husbandry, sheep management and production. Sheep market surveys, key person interviews and secondary data were used for verification of data. Detailed information on sheep was obtained through on-farm performance recording run in 16 sheep farms, including a total of 2420 breeding ewes. Sheep of different Improved Awassi lines were present in those experimental flocks, including the Afec Awassi, carrying the Booroola gene (BB/B+), which has a major impact on prolificacy, and the Assaf breed. In a last step, 56 sheep farmers from different parts of the Negev were asked about their selection criteria for replacement. Trait preferences were derived by a consecutive ranking technique. The data analysis incorporated descriptive statistics, general linear models and non-parametric tests performed with SAS 9.1 and SAS 9.2 software. The diagnostic survey revealed that functions of sheep flocks differed significantly between tribes: in the semi-arid area with a main focus on generating income, and in tribes of the arid zone with a higher importance of subsistence related and social purposes. The primary purpose was meat production. The dual purpose of meat and milk was still found in 57% of the farms, yet only 13% of the farms were selling milk products. The missing market access was the main reason for a strong decline in the use of milk, wool and manure during the last decade. Lamb meat, providing the main output of all farms, ranged from 13 to 58 kg of marketable live weight per ewe and year (LME). Classified according to their LME, 30% of the investigated farms followed an extensive, 47% a semi-extensive and 23% a semi-intensive management. Significant differences in meat output were found for the factors tribe group, breed composition of flocks and selling age of lambs. The gross margin per ewe and year varied between -27 € and 54 € and the net benefit per flock and year (NB) between -7,020 € and 20,993 €. Both economic parameters were positively related to the meat output. Negative NB’s were realized by 43% of the farms, belonging foremost to traditional Bedouin tribes, oriented towards subsistence and living in remote areas. Only 27% of economically successful farms generated an income comparable to that of a part-time off-farm job. These farmers regularly used veterinary services to introduce improved breeds and modern breeding technology. Their good market access facilitated a strong market-oriented production, integrating lamb fattening, which had the highest impact on the production success. During the two years of research a severe drought occurred in the study region, causing a decline in LME, due to lower lambing rates and higher mortalities. To adapt to changing conditions, farms keeping the pure local Awassi breed reduced their flock sizes stronger than farms keeping also crossbreds. Consequently, the LME and the NB decreased stronger in flocks of pure local Awassi, compared to flocks with crossbreds. The decline in the NB was 14 times lower in flocks with use of hormonal synchronization and/or artificial insemination than in flocks with the local breed kept under traditional management. The lowest decline in the NB and the benefit cost ratio (BCR) were found in flocks with more than 50% crossbreds. Yet, a high variation in performance among flocks with different degrees of crossbreeding was detected. Data analysis of flocks with permanent performance recording revealed that prolificacy was significantly affected by breed, besides farm and parity. Afec Awassi (B+) ewes had a significantly (p

Download or read book Sheep Breeding written by G.L Tomes and published by Butterworth-Heinemann. This book was released on 2013-10-22 with total page 597 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sheep Breeding, Second Edition covers sheep breeding in its widest context through a collection of papers about sheep breeding from experts in the field across the globe. The book incorporates sections composed of general review articles and important research findings on the structures and objectives of national sheep industries from many of the major sheep-producing areas of the world. The text also discusses the genetic selection and breed improvement; stud breeding and cooperative breeding schemes; reproduction in the ewe; and male reproduction and artificial insemination. The monograph is recommended for those who wish to learn different techniques and practices in raising and breeding sheep, especially those who are new in the field. The book is also for those who wish to conduct research that would help improve raising and breeding sheep.

Download or read book The International Wool Trade written by Julian Roche and published by Elsevier. This book was released on 1995-07-31 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a comprehensive guide the wool industry and the trading mechanisms involved in this vital business. The supply chain is examined, from sheep farming through to final garment manufacture and supply. The patterns of trade are explored, together with the various international arrangements that are associated that are associated with the wool trade. The book goes on to explain the theory and practice of trading in the futures markets and the associated regulation, and looks at the players, both wool companies and other institutions. The final chapter covers competitors to wool, such as man-made fibres and cotton, providing an analysis of current international trading patterns and looking to the future for this essential commodity.

Download or read book Technologies for Rainfed Agriculture in Mediterranean Climates written by Peter Oram and published by World Bank Publications. This book was released on 1995-01-01 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the results of a survey of 1,000 multinational corporations undertaken in 1992 which asked about the importance of environmental issues in investment decisions. The survey shows that most large corporations look systematically at environmental questions when they decide where to invest. Environmental problems appear to have discouraged a number of investments across different industries and the question of liability for past pollution problems at industrial sites was the greatest concern for investors.

Download or read book 3rd World Congress on Genetics Applied to Livestock Production Introduction breeding programs for dairy and beef cattle sheep and goats water buffalo written by and published by . This book was released on 1986 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt: