GENETIC AND PHENOTYPIC TRENDS OF CALVING INTERVAL AND AGE AT FIRST CALVING IN A COMMERCIAL HOLSTEIN HERD | ||||
Egyptian Journal of Animal Production | ||||
Article 3, Volume 46, Issue 2, June 2009, Page 103-112 PDF (187.03 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/ejap.2009.94034 | ||||
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Authors | ||||
M. A.M. Ibrahim1; H. E. Rushdi2; S. A.M. Abdel-Salam3; S. Abou-Bakr ![]() ![]() | ||||
1Department of Animal production, Faculty of Agriculture, Cairo University, Giza, Egypt | ||||
2Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt | ||||
3Department of Animal Production, Faculty of Agriculture, Cairo University | ||||
4Department of Animal production, Faculty of Agriculture,Cairo University , Giza, Egypt | ||||
Keywords | ||||
Reproductive traits; genetic trend; phenotypic trend; Holstein | ||||
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