Genetic Evaluation of Herd Life in Jersey Crossbred Cattle PDF Download
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Author: Neelanjan Rakshit
Publisher:
ISBN:
Category :
Languages : en
Pages : 64
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Author: Neelanjan Rakshit
Publisher:
ISBN:
Category :
Languages : en
Pages : 64
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Author: Lalmuansangi
Publisher:
ISBN:
Category :
Languages : en
Pages : 65
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Author:
Publisher:
ISBN:
Category : Cattle
Languages : en
Pages : 60
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Author: Boddu Venkata Subramanyam
Publisher:
ISBN:
Category :
Languages : en
Pages : 75
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Author: Tej Bahadur Yadav
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659525445
Category :
Languages : en
Pages : 72
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Book Description
Milk yield is a repeatable character. The genetic contribution towards milk production during different lactation's of an individual remain same and therefore the differences in production levels from one lactation to other are due to the various environmental changes including nutrition and climate along with the physiological changes. The physiological changes may be observed in many forms viz. body growth, and functional efficiency of udder etc. The attainment of higher body weight at early age(i.e. at first calving) seems to play a vital role in building the efficient production life of dairy cows. Therefore production from different cows may change due to change in body weight, age at first calving and calving intervals. A major objective for cattle breeding is to enhance milk production for higher economic return.The present study was conducted on Jersey x Sahiwal crossbrede with following aspect.To estimate average milk production and profit during first five lactation. To predict optimum body weight at first calving for maximum herd life milk production or profit. This book is valuable for Livestock Production and Management research workers, scholars and dairy managers.
![Genetic Evaluation of Longevity in Ayrshire and Jersey Dairy Cattle Using a Random Regression Model [microform] PDF](https://books.google.com/books/content/images/frontcover/q4quwgEACAAJ?fife=w80-h100)
Author: Fiona Galbraith
Publisher: National Library of Canada = Bibliothèque nationale du Canada
ISBN: 9780612906464
Category :
Languages : en
Pages : 118
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Author: Frantz Supreme
Publisher:
ISBN:
Category : Dairy cattle
Languages : en
Pages :
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Author: Michael J. Fields
Publisher: CRC Press
ISBN: 1000109844
Category : Nature
Languages : en
Pages : 385
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Book Description
Factors Affecting Calf Crop summarizes the latest information available from leading cattle physiologists and geneticists regarding factors known to influence the production of live calves at weaning. You get practical information on management techniques for improving reproduction efficiency in the herd. You'll also learn about the functioning of the reproductive system and how this may affect reproductive processes in the cow herd. Managers will benefit from a clearer understanding of the factors known to limit efficient reproduction, while veterinarians and other professionals who advise cattlemen will appreciate the substantial reference material and color photographs for defining cow condition scores. Color photographs are also used to illustrate the discussions of testicular thermographies and their applications. Other chapters in the book cover developments in improving reproductive performance of the replacement heifer, the brood cow, and the bull. Topics on reproduction include physiology/endocrinology, the use of growth promotants, genetics and physiological and economic considerations in selecting the age to breed heifers, heritability of fertility, length of the breeding season, prepartum and postpartum nutrition, nursing by the calf, cloning of embryos, and much more.
Author: Janez Jenko
Publisher:
ISBN:
Category :
Languages : en
Pages : 264
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 71
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