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首页> 外文期刊>Tropical Animal Health and Production >Reproductive performance of crossbred dairy cows reared under traditional low input production system in the eastern Himalayas
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Reproductive performance of crossbred dairy cows reared under traditional low input production system in the eastern Himalayas

机译：在传统的低投入生产系统下，喜马拉雅东部的杂交奶牛的繁殖性能

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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.
机译：评估了在传统低投入生产系统下饲养的杂交母牛的繁殖性能。总共对160位农民进行了调查，并对传统饲料的主要成分进行了评估。分析血清中的总蛋白，白蛋白和胆固醇浓度。从261头杂交奶牛的记录中计算出了首次服务的年龄，第一次产犊的年龄，产犊间隔，首次产犊的犊牛和达到受孕间隔的犊牛。粗蛋白，粗纤维，无氮提取物，醚提取物和总灰分含量分别为7.2％至13.9％，18.2％至34.4％，39.1至59.2％，2.1％至4.1％和7.2％至17.9％。血清中总蛋白和白蛋白浓度分别为7.6±0.3 g / dl和4.3±0.3 g / dl。胆固醇浓度为221.1±8.2mg / dl。首次服务的平均年龄和第一次产犊的平均年龄分别为28.6±1.0和40.7±1.1个月。首次产犊和受胎间隔产犊的平均值分别为182±14.5天和224±9.0天。表现出典型的宫颈粘液蕨型的母牛受胎率很高（56.6％）。基于1 st 受精的受胎率为44.4％。杂交奶牛中重复繁殖和发情的发生率分别为12.8％和14.1％。

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