血浆孕酮含量与广西本地母牛妊娠关系的研究

STUDIES ON THE PREGNANCY DIAGNOSIS IN INDIGENOUS CATTLE AND BUFFALOES IN GUANGXI BY MEASURING THE PLASMA PROGESTERONE

用放免法测定血浆孕酮含量,进行母牛妊娠诊断。一批103头母黄牛直检后采血测孕酮,以孕酮含量1.0—1.5,1.5—2.0,2.0～2.5ng/ml,高于2.5ng/ml为标准,诊断为妊娠的准确率分别是40.0%,57.0%,80.0%,84.4%;低于1.0ng/ml时,诊断为未妊娠的准确率为88.0%。另一批17头同期发情、输精后20天内未返情的母黄牛,于输精后20,25,30天各采血一次测孕酮作孕检,结果表明,应用此法未能取得完全一致的结果。81头母水牛孕检后采血测孕酮,以孕酮含量1.0～1.5,1.5～2.0ng/ml,高于2.0ng/ml 为标准,诊断为妊娠的准确率分别是70%,91%,100%;低于1.0ng/ml时,诊断为未妊娠的准确率是53%。

Experiments Were conducted for pregnancy diagnosis by measuring the plasma progesterone(P.)levels with radioimmunoassay.The plasma P levels from one group of 103 indigenous cattle cows showed that the accuracies for the P levels of 1.0～1.5,1.5～2.0,2.0～2.5 and above 2.5ng/ml as pregnant indications were 40.0%,57.0%,80.0% and 84.4% respectively, and for the level below 1.0ng/ml as non-pregnant indication was 88.0%. The experimental results from another group of 17 synchronized cows samp- ling at the days 20th,25th and 30th after inseminating did not show exactly the same. The results from 81 Chinese swamp buffalo cows showed that the accu- racies for the P levels of 1.0～1.5,1.5～2.0 and above 2.0ng/ml as pregnant indications were 70%,91% and 100% respeetively,and for the level below 1.0ng/ml as non-pregnant indication was 53%.