| 奶牛发情周期中毛 唾液和乳汁孕酮水平的变化 |
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| 引用本文： | 张家骅,黄群山. 奶牛发情周期中毛 唾液和乳汁孕酮水平的变化[J]. 黑龙江畜牧兽医, 1992, 0(11): 5-7 |
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| 作者姓名： | 张家骅 黄群山 |
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| 作者单位： | 西北农业大学兽医系，西北农业大学兽医系，西北农业大学兽医系，西北农业大学兽医系，西北农业大学兽医系 杨陵 712100，杨陵 712100，杨陵 712100，杨陵 712100，杨陵 712100 |
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| 摘 要： | 本实验采用放射免疫分析法(RIA)测定了11头奶牛一个发情周期里毛、唾液、乳汁中孕酮(P_4)含量。经产牛(n=8)的毛和唾液中P_4水平变化与乳汁中P_4水平变化一致。青年牛(n=3)的毛和睡液中的P_4水平变化一致,并分别与经产牛毛和唾液中P_4水平变化一致。7头配种后的经产牛和5头配种后的青年牛分别取20和23天的样品进行妊娠诊断,与配种后60天的直检结果相对照,依据经产牛毛、乳P_4水平进行妊娠诊断的阳性准确率分别是85.7％(6/7)和100％(7/7),依据青年牛毛P_4水平进行妊娠诊断的阳性准确率为100％(5/5)。
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| 关 键 词： | 乳牛 发情 乳汁 孕酮牛 |
Change of progesterone levels in hair Saliva and milk in the estrous cycle in cows |
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| Jiahua Zhang Qunshan Huang Binghong Chang Tinyang Bai Furong Yang. Change of progesterone levels in hair Saliva and milk in the estrous cycle in cows[J]. Heilongjiang Animal Science And veterinary Medicine, 1992, 0(11): 5-7 |
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| Authors: | Jiahua Zhang Qunshan Huang Binghong Chang Tinyang Bai Furong Yang |
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| Affiliation: | Jiahua Zhang Qunshan Huang Binghong Chang Tinyang Bai Furong Yang |
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| Abstract: | The concentrations of progesterone (P4) were measured with R1A in the daily samples of hair, saliva and milk in the estrous cycle in cows. The same changing patterns of P_4 levels in hair saliva and milk in 8 delivered cows and in hair and saliva in 3 heifers were observed. Also, the change of the P_4 levele in hair and saliva in the delivered cows was similar to those in the heifers, respectively. Compared the P_4 concentrations in the samples collected on day 20 and 23 with the results of rectal palpation on day 60, the positive rates of pregnacy diagnosis were 85.7%(6/7) and 100% (7/7)by P_4 RlA in hair and milk in 7 bred delivered cows -espectively and 100%(5/5) bv P_4 RlA in hair in 5 bred heifers. |
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| Keywords: | Cow Progesterone Hair Saliva Milk Pregnancy diagnosis |
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