Reproductive Performance Definition in Dairy Cattle: Affective Factors
(ندگان)پدیدآور
Dayyani, NematollahKarkudi, KeyvanBakhtiari, Hasanنوع مدرک
TextReview Article
زبان مدرک
Englishچکیده
The reproductive performance of a dairy herd has a significant effect on the profitability of that herd. Common measures of reproductive performance are days to first service, days to conception, calving interval, services per conception, conception rate, estrus detection rate, and pregnancy rate. Most cow operations would benefit economically by reducing the number of operational days, decreasing culling rates due to non-pregnant females, and shortening their calving interval. Several factors influence reproductive performance, but none require more visual attention than heat or estrus detection
کلید واژگان
ReproductivePerformance
Dairy cattle
Animal Science
شماره نشریه
11تاریخ نشر
2013-11-011392-08-10
ناشر
Sami Publishing Companyسازمان پدید آورنده
Lecturer of Payam Noor university, Faculty of Agriculture,Qom, IranAssociate Professor of Azad University, Saveh Branch, Saveh, Iran
Lecturer of Payam Noor university, Tehran, Iran
شاپا
2383-27622322-4827




