SERVICE PERIOD AND CALVING INTERVAL AS INDICES OF REPRODUCTIVE PERFORMANCE OF COWS UNDER FIELD CONDITIONS | ||||
Veterinary Medical Journal (Giza) | ||||
Volume 42, Issue 3, July 1994, Page 133-138 PDF (1.79 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/vmjg.1994.371659 | ||||
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Authors | ||||
QURESHI L* 1; T MAGRAY2; L LODHI2; G MUHAMMAD1 | ||||
1Department of Animal Reproduction Faculty of Veterinary Science, University of Agriculture, Faisalabad (Pakistan) | ||||
2Department of Medicine and surgery, Faculty of Veterinary Science, University of Agriculture, Faisalabad (Pakistan) | ||||
Abstract | ||||
Data on 430 artificially inseminated and 257 naturally bred cows was used to determine the service period and calving interval. Combined together the service period mean = S. E. was calculated to be 160.5 = 3.55 and calving interval (mean = S. E.) to be 400.88 = 5.64 days. The service period and calving interval for the artificially inseminated cows were 152.73 = 4.74 and 387.24 = 7.50 days respectively. The corresponding values for naturally bred cows were 182.45 = 3.80 and 423.69 = 8.11 days respectively. The artificially inseminated cows had shorter service period and calving interval. The possibility to reduce service period and calving interval 1st discussed. | ||||
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