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Original Article

AJVS. 2017; 55(1): 21-27


Effect of Herd size on the Productive, Reproductive, and Economic Efficiency of Holstein Dairy Cows

Abdelgawad S. El-Tahawy.




Abstract

A total of 8426 dairy records were randomly selected from 11 dairy herds which had been accepted the request to participate in this study to explore the influence of herd size on the productivity and economic efficiency of the Holstein dairy cows. Records were collected during the period started from 1st January 2016 to 30 January 2017. The localities which the dairy farms were located are El-Beheira, Alexandria and Kafr El-Sheik provinces. All the investigated farms were belonged to the private management system. Herd size was classified into three categories: small (from 100 to 500 cow), medium (501 to 900 cows), and (more than 900). The obtained results showed that total milk yield of the medium size herd (5001-900 cow) was significantly (10080.02±55.51 kg; P

Key words: Holstein cows, Herd size, Economic, Productive, Efficiency






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