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, Pages 103-112 PDF (187.03 K) | ||
Document Type: Original Article | ||
DOI: 10.21608/ejap.2009.94034 | ||
Authors | ||
M. A.M. Ibrahim1; H. E. Rushdi2; S. A.M. Abdel-Salam3; S. Abou-Bakr* 4 | ||
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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