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Original Research (Original Article) Open Access


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<0.05) greater than the herd size for small and large size herd which yielded 8232.79±100.32 kg and 9380.60±58.89 kg, respectively. However, 305-milk yield of large herd size was significantly (8743.95±44.23 kg; P<0.05) greater than the comparable small and medium size herds. In terms of the reproductive performance, small and medium size herds required number of service per conception more than (3.36±0.08 and 3.53±0.06; P<0.05) the large herd size. In terms of the return parameters, total returns and net return of medium size herd were greater than those for small and large size herd.

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


 
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Pubmed Style

Abdelgawad S. El-Tahawy. Effect of Herd size on the Productive, Reproductive, and Economic Efficiency of Holstein Dairy Cows. AJVS. 2017; 55(1): 21-27. doi:10.5455/ajvs.277554


Web Style

Abdelgawad S. El-Tahawy. Effect of Herd size on the Productive, Reproductive, and Economic Efficiency of Holstein Dairy Cows. http://www.alexjvs.com//?mno=277554 [Access: December 18, 2017]. doi:10.5455/ajvs.277554


AMA (American Medical Association) Style

Abdelgawad S. El-Tahawy. Effect of Herd size on the Productive, Reproductive, and Economic Efficiency of Holstein Dairy Cows. AJVS. 2017; 55(1): 21-27. doi:10.5455/ajvs.277554



Vancouver/ICMJE Style

Abdelgawad S. El-Tahawy. Effect of Herd size on the Productive, Reproductive, and Economic Efficiency of Holstein Dairy Cows. AJVS. (2017), [cited December 18, 2017]; 55(1): 21-27. doi:10.5455/ajvs.277554



Harvard Style

Abdelgawad S. El-Tahawy (2017) Effect of Herd size on the Productive, Reproductive, and Economic Efficiency of Holstein Dairy Cows. AJVS, 55 (1), 21-27. doi:10.5455/ajvs.277554



Turabian Style

Abdelgawad S. El-Tahawy. 2017. Effect of Herd size on the Productive, Reproductive, and Economic Efficiency of Holstein Dairy Cows. Alexandria Journal of Veterinary Sciences, 55 (1), 21-27. doi:10.5455/ajvs.277554



Chicago Style

Abdelgawad S. El-Tahawy. "Effect of Herd size on the Productive, Reproductive, and Economic Efficiency of Holstein Dairy Cows." Alexandria Journal of Veterinary Sciences 55 (2017), 21-27. doi:10.5455/ajvs.277554



MLA (The Modern Language Association) Style

Abdelgawad S. El-Tahawy. "Effect of Herd size on the Productive, Reproductive, and Economic Efficiency of Holstein Dairy Cows." Alexandria Journal of Veterinary Sciences 55.1 (2017), 21-27. Print. doi:10.5455/ajvs.277554



APA (American Psychological Association) Style

Abdelgawad S. El-Tahawy (2017) Effect of Herd size on the Productive, Reproductive, and Economic Efficiency of Holstein Dairy Cows. Alexandria Journal of Veterinary Sciences, 55 (1), 21-27. doi:10.5455/ajvs.277554





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