Effects of Crossbreeding on Reproductive Performance of Dairy Cattle PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Effects of Crossbreeding on Reproductive Performance of Dairy Cattle PDF full book. Access full book title Effects of Crossbreeding on Reproductive Performance of Dairy Cattle by Frank Alwin Verley. Download full books in PDF and EPUB format.
Author: Frank Alwin Verley
Publisher:
ISBN:
Category :
Languages : en
Pages : 90
Get Book Here
Book Description
Author: Frank Alwin Verley
Publisher:
ISBN:
Category :
Languages : en
Pages : 90
Get Book Here
Book Description
Author: P. K. Vij
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
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 :
Get Book Here
Book Description
Author: K. C. Abraham
Publisher:
ISBN:
Category :
Languages : en
Pages : 100
Get Book Here
Book Description
Author: E. P. Cunningham
Publisher: Bernan Press(PA)
ISBN:
Category : Business & Economics
Languages : en
Pages : 100
Get Book Here
Book Description
Author: Paul Christou
Publisher: Springer
ISBN: 9781461457961
Category : Technology & Engineering
Languages : en
Pages : 1869
Get Book Here
Book Description
Gathering some 90 entries from the Encyclopedia of Sustainability Science and Technology, this book covers animal breeding and genetics for food, crop science and technology, ocean farming and sustainable aquaculture, transgenic livestock for food and more.
Author: Marija Klopcic
Publisher: BRILL
ISBN: 9086866573
Category : Technology & Engineering
Languages : en
Pages : 281
Get Book Here
Book Description
The past decade has revealed unfavourable trends in e.g. fertility, udder health and locomotion in some major dairy cattle breeds due to a large increase in production and insufficient consideration of functional traits in the breeding goals. Such unfavourable trends in some functional traits increase costs. Additionally, the enlargement of herds leads to less available labour time per individual cow. This asks for cows that are easy to handle. At the same time, society is demanding a higher welfare standard of animals. These contradicting developments have increased the desire for so called more robust animals. Robustness can be defined as 'the ability to maintain homeostasis in commonly accepted and sustainable herds of the near future'; or 'the ability of the cow to function well in the environment she lives in as well as in a wide range of climates and production systems'. This book contains a series of articles (26) dealing with the concept of robustness, including aspects like evolution, genetics, environment, animal health and welfare, and integrity. Besides the major functional traits also the links to energy balance, hot climatic conditions, and the attitude and input of stakeholders towards robustness as part of the breeding program are discussed. This book is the first attempt to summarise the available knowledge concerning this topic in cattle, making this book unique. The contributions are from authors of 16 countries from all over the world. However, the focus is presently on farm animal level, while in future robustness of the whole production system may also require additional attention.
Author: Colin William Holmes
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 20
Get Book Here
Book Description
Author: J.M. Sreenan
Publisher: Springer Science & Business Media
ISBN: 9400950381
Category : Medical
Languages : en
Pages : 294
Get Book Here
Book Description
Reproductive wastage is a major inefficiency in all livestock production with embryonic mortality accounting for a major portion of this loss. Accordingly the Commission of the European Communities encouraged the organisation of a seminar on embryonic mortality in farm animals which was held in Brussels on the 11th and 12th of December 1984. This book contains the text of the papers, discussions and final summary presented at that Seminar. As a background to the Seminar, the extent and timing of embryonic loss was described for farm animals. Particular consideration was then given to the various mechanisms and signals, both embryonic and uterine in origin, that are so far known to be involved in the establishment of pregnancy. Possible causes of embryonic death including physiological, endocrinological, genetic and immunological components were outlined and discussed. The final summary contains general conclusions from the Seminar and recommendations for future research work on this topic. J.M. Sreenan M.G. Diskin July 1985. ******************** THE EXTENT AND TIMING OF EMBRYONIC MORTALITY IN THE COW J. M. Sreenan & M. G. Diskin, The Agricultural Institute, Belclare, Tuam, Galway, Ireland ABSTRACT The extent and timing of embryonic mortality in heifers, normal cows and repeat breeder cows has been reviewed.
Author: Robert C. Goodling
Publisher:
ISBN:
Category :
Languages : en
Pages : 316
Get Book Here
Book Description
