Effects of Crossbreeding on Reproductive Performance of Dairy Cattle PDF Download
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Author: Frank Alwin Verley
Publisher:
ISBN:
Category :
Languages : en
Pages : 90
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Book Description
Author: Frank Alwin Verley
Publisher:
ISBN:
Category :
Languages : en
Pages : 90
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Book Description
Author: P. K. Vij
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
The present study was undertaken to compare half breds and 3/4th exotic crosses of holstein brown swiss and jersecy with Zebu in two three and four breed combinations. A total of 730 records of different genetic groups were analysed. Growth reproduction and production traits were analysed. The study revealed that holstein sired crosses showed the highest body weights at different ages and excelled all other genetic groups for all reproduction and production traits. Use of superior sires is called for in crossbreeding programme whatever be the exotic breed under consideration. Halfbreeds proved to be the best for growth production and reproduction characters as compared to 3/4th exotic crosses. Intersemating accompanied by selection at 50 percent level inheritance appears to be an ideal long term breeding policy for crossbred cattle.
Author: K. C. Abraham
Publisher:
ISBN:
Category :
Languages : en
Pages : 100
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Book Description
Author: E. P. Cunningham
Publisher: Bernan Press(PA)
ISBN:
Category : Business & Economics
Languages : en
Pages : 100
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Author: K C. Abraham
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Milton Henry Fohrman
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 132
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Book Description
In 1939, when the Bureau of Dairy Industry began its crossbreeding experiment at Beltsville, the published information on the crossbreeding of dairy cattle was slight, unimpressive, and very little of it was based on experimental results. The crossbreeding investigations at Beltsville were undertaken to develop knowledge on the subject which would provide a sound basis for advising the operators of milk-producing farms what to expect if they used crossbreeding in hopes of producing better replacements for their milking herds. Final results on any dairy cattle breeding research project cannot be published until the last animal on the project has died, so this report covers the breeding performance and milk and butterfat production on all individuals used on the project which have had time to complete a normal first-lactation period.
Author: Colin William Holmes
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 20
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Book Description
Author: Gilles Allaire
Publisher: Routledge
ISBN: 1351210025
Category : Science
Languages : en
Pages : 294
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Book Description
With increasing pressure on resources, the looming spectre of climate change and growing anxiety among eaters, ecology and food are at the heart of the political debates surrounding agriculture and diet. This unique contribution unravels agri-environmental issues at different spatial levels, from local to global, documenting the major shifts in agriculture from a long-term perspective. The book begins by exploring the changes in the industrialisation and socialisation of agriculture over time, through the lens of institutional economics including The French Regulation School and Conventions Theory. Building on Polanyi’s ‘Great Transformation’, the chapters in this volume analyse long-term and contemporary changes in agriculture and food systems that have occurred throughout the last few centuries. Key chapters focus on the historical changes in provisioning and the social relations of production, consumption, and regulation of food in different socio-political contexts. The future of agriculture is addressed through an analysis of controversial contemporary political claims and their engagement with strategies that aim to improve the sustainability of agriculture and food consumption. To shed light on ongoing changes and the future of food, this book asks important environmental and social questions and analyses how industrial agriculture has played out in various contexts. It is recommended supplementary reading for postgraduates and researchers in agricultural studies, food studies, food policy, the agri-food political economy and political and economic geography.
Author: V. Venkatasubramanian
Publisher: M.D. Publications Pvt. Ltd.
ISBN: 9788175330221
Category : Technology & Engineering
Languages : en
Pages : 214
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Book Description
The book presents valuable information on the performance of cross-breds and indigenous cattle with respect to reproduction, production, disease susceptibility and draught utility aspects under tropical field conditions. It discusses empirical evidences of various factors that are responsible for influencing the performance of dairy cattle under different farming systems locations. It also provides an insight into the services undertaken by the cattle developmental agencies, field level constraints experienced by them and farmers with respect to dairy farming. In view of the significance attached to the cross-breeding programme in the tropical countries like India, the book provides an insightful understanding about the multivarious factors associated with dairy farming under tropical conditions involving different farming systems located under varied agro-ecological conditions.
Author: International Livestock Research Institute
Publisher: ILRI (aka ILCA and ILRAD)
ISBN: 9789291460038
Category : Animal industry
Languages : en
Pages : 268
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Book Description
Policy concepts; Identification of policy issues; Production systems, supply and demand; Market, price and trade policies; Marketing and distribution systems; Budget and manpower planning; Land tenure police for the livestock sector; Policy analysis report writing and communication; Livestock production and marketing in alphabeta - a case study.
