Reproductive performance of crossbred dairy cows reared under traditional low input production system in the eastern Himalayas |
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Authors: | A Kumaresan P P Prabhakaran K M Bujarbaruah K A Pathak Bijoy Chhetri S K Ahmed |
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Institution: | (1) Animal Reproduction/ Gynaecology, ICAR Research complex for NEH Region, Barapani, Umiam, Meghalaya-793 103, India;(2) Deptt. of LPT, College of Veterinary and Animal Sciences, GBPUA&T, Pant Nagar-263 145, Uttar Pradesh, India;(3) Krishi Bhavan, New Delhi, India;(4) ICAR Research Complex for NEH Region, Mizoram centre, Kolasib-796 081, Mizoram, India |
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Abstract: | Reproductive performance of crossbred cows reared under traditional low input production system was assessed. A total number
of 160 farmers were surveyed and traditional fodders were evaluated for proximate composition. Total protein, albumin and
cholesterol concentrations in blood serum were analyzed. The age at first service, age at first calving, calving interval,
calving to first service and calving to conception interval were calculated from records of 261 crossbred dairy cows. The
crude protein, crude fiber, nitrogen free extract, ether extract and total ash content varied from 7.2 to 13.9, 18.2 to 34.4,
39.1 to 59.2, 2.1 to 4.1 and 7.2 to 17.9%, respectively. The total protein and albumin concentrations in blood serum were
7.6 ± 0.3 and 4.3 ± 0.3 g/dl, respectively. The cholesterol concentration was 221.1 ± 8.2mg/dl. The mean age at first service
and age at first calving was 28.6 ± 1.0 and 40.7 ± 1.1months, respectively. The mean values for calving to first service and
calving to conception intervals were 182 ± 14.5 and 224 ± 9.0days, respectively. The conception rate was significantly high
among the cows that showed typical fern pattern of cervical mucus (56.6%). The conception rate based on 1st insemination was 44.4%. The incidence of repeat breeders and anestrus among the crossbred cows were 12.8 and 14.1%, respectively. |
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Keywords: | Crossbred cow low input production system management reproduction |
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