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Analysis of variance on economic traits of Karakul sheep for determination selection index

Published online by Cambridge University Press:  23 November 2017

Malek Hossein Delavar ,
Mohammad Reza Kouhkannejad  and
Mahdi Elahi Torshizi
Malek Hossein Delavar*
Affiliation:
Education Center of Agriculture office, Mashhad, Khorasan, Iran
Mohammad Reza Kouhkannejad
Affiliation:
Education Center of Agriculture office, Mashhad, Khorasan, Iran
Mahdi Elahi Torshizi
Affiliation:
Education Center of Agriculture office, Mashhad, Khorasan, Iran
*
Email:mh_delavar@yahoo.com
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Extract

The selection index is a method for estimation the breeding value of an animal combining all information available on the animal and its relatives. Research shows that genetic and phenotypic correlation between traits is completely different among breeds. In baluchi sheep, genetic and phenotypic correlation between weaning weight and yearling weight are 0.93 and 0.59 respectively. Another study on hamshire sheep shows that correlation between birth weight and yearling weight is 0.48 and 0.23. The objective of this study is to predict different type of correlation in karakul sheep traits for determination selection index.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2007 , April 2007 , pp. 137
Copyright
Copyright © The British Society of Animal Science 2007

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References

Maria, G.A. Boldman, K.G. and Van Vleck, L.D. 1997. Estimats of variance due to direct and maternal effect for growth traits of Romano sheep. Journal of Animal Science 71:845–849.Google Scholar
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