文章基本信息

标题：Effect of Herd size on the Productive, Reproductive, and Economic Efficiency of Holstein Dairy Cows -
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作者：Abdelgawad S. El-Tahawy
期刊名称：Alexandria Journal of Veterinary Sciences
印刷版ISSN：1110-2047
电子版ISSN：1110-2047
出版年度：2017
卷号：55
期号：1
页码：21-27
DOI：10.5455/ajvs.277554
出版社：International Medical Journal Management and Indexing System
摘要：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.
关键词：Holstein cows; Herd size; Economic; Productive; Efficiency