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Derivation of economic values for dairy cattle in Iran and comparison to other countries

Published online by Cambridge University Press:  23 November 2017

Ali Sadeghi-Sefidmazgi ,
Mohammad Moradi-Shahrbabak ,
Ardeshir Nejati-Javaremi ,
Abdolahad Shadparvar  and
Han A. Mulder
Ali Sadeghi-Sefidmazgi*
Affiliation:
University of Tehran, Karaj, Tehran, Iran
Mohammad Moradi-Shahrbabak
Affiliation:
University of Tehran, Karaj, Tehran, Iran
Ardeshir Nejati-Javaremi
Affiliation:
University of Tehran, Karaj, Tehran, Iran
Abdolahad Shadparvar
Affiliation:
University of Guilan, Rasht, Guilan, Iran
Han A. Mulder
Affiliation:
Animal Breeding and Genetics Group, Wageningen Univesity, PO Box 338, 6700 AH Wageningen, Wageningen, Netherlands
*
Sadeghisefidmazgi.ali@gmail.com
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Extract

Index selection is the most effective selection strategy to improve total merit. Index selection requires the economic values (EVs) of the traits in the breeding goal and the genetic parameters of the traits in the breeding goal and in the index (Hazel and Lush, 1942). According to this theory, in most countries a national selection index has been developed for dairy cattle (Miglior et al., 2005). In Iran a national selection index has not yet been developed. The first objective of this study was, therefore, to estimate economic values for production traits (milk, fat and protein yield) and longevity for Holsteins in Iran. The second objective was to compare the proposed Iranian selection index with selection indices of other countries in the world.

Type
Theatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2007 , April 2007 , pp. 72
Copyright
Copyright © The British Society of Animal Science 2007

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References

Dadpasand Taromsari, M. 2006. Comparsison between different methods of genetic parameters estimations and genetic evaluation for productive life in Holstein dairy cattle of Iran. PhD Thesis, Department of Animal Science, University of Tehran, Karaj, Iran.Google Scholar
Hazel, L. N. and Lush, J. L. 1942. The efficiency of three methods of selection. J. Hered. 33: 393–399.Google Scholar
Miglior, F., Muir, B. L., and Van Doormaal, B. J.. 2005. Selection Indices in Holstein Cattle of Various Countries J. Dairy Sci. 88: 1255–1263.Google Scholar