适龄母牛“短期优饲”与诱导发情处理试验研究

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中文关键词: 母牛  短期优饲  PGF2α  发情率  受胎率

英文关键词: Cow  short-term optimal feeding  PGF2α  estrus rate  conception rate

中文摘要:

      本试验在哈密市伊州区天山乡吐克塔尔养殖专业合作社以圈舍养殖“集中短期优饲”(试验组1)与伊吾县前山乡以“草原放牧+补饲”(试验组2),采用不同方式对适龄母牛进行人工授精改良。试验组1筛选60头母牛,发情授精49头,发情率81.6%；试验组2筛选母牛446头,发情受配246头,发情率55.2%,两组相比较差异极其显著(P<0.01)。通过B超妊娠检查,试验组1受配牛48头,妊娠42头,试验组2受配母牛抽检209头,妊娠183头；两者受胎率均为87.5%,两组间差异不显著(P>0.05)。但舍饲“短期优饲”组,母牛发情集中,发情率高,且便于观察和适时授精。

英文摘要:

      The experiments of "concentrated short-term optimal feeding" (group 1) and "grassland grazing + supplementary feeding" (group 2) were carried out respectively in Tuktar breeding cooperative, Tianshan Township, Yizhou district, Hami City , and Qianshan Township, Yiwu County, in order to improve the quality of artificial insemination. The results showed that in group 1,60 cows were selected, 49 cows were fertilized in estrus, and the estrus rate was 81.6%. In group 2, 446 cows were selected and 246 cows were mated with estrus rate of 55.2% . There was a significant difference between the two groups (P< 0.01) . The results of B-mode ultrasound showed that 42 of 48 cows in group 1 and 183 of 209 cows in group 2 were pregnant, and the pregnancy rate in both groups was 87.5%(P>0.05).But the estrus time of "short-term optimal feeding" group is closer, the estrus rate is high, and it is easy to observe and timely inseminate, so it can be popularized.