摘要
配种季节开始前6周和3周,20头母羊用2ml睾酮免疫原免疫2次(T组),13头不作任何免疫处理为对照(C组)。睾酮免疫不影响母羊正常发情,可使产羔率由115.38％提高到164.71％。T组羊发情当天的LH水平显著高于C组(T组:3.38±0.76miu/ml;C组:1.93±0.88miu/ml);黄体期孕酮水平亦有同样趋势,在周期12天差异显著(T组:9.94±4.21ng/ml;C组:3.71±0.92ng/ml)。整个发情周期T组的睾酮水平显著高于C组,而17β-雌二醇水平两组间无显著差异。
The effects of active immunization against testosterone-3-(O-carboxymethyl) oxime-BSA on oestrus, lambing rate and the concentrations of LH, progesterone, testosterone and oestradiol-17β in peripheral serum were studied in Merino ewes. Twenty ewes were immunized twice with 2ml testosterone immunogen 6 and 3 weeks respectively before mating (Group T), and thirteen ewes were untreated as control (Group C). Immunization didn't prevent ewes from oestrus and improved lambing rate from 115.38% (Group C) to 164.71% (Group T). The level of LH was increased (3.38±1.76 vs 1.93±0.88miu/ml). The level of progesterone in luteal phase of oestrus cycle was also raised and was significantly higher on the 12th day of cycle (9.94±4.2 vs 3.71±0.92ng/ml). The level of testosterone was significantly increased in Group T throughout the cycle, but the concentrations ofoestradiol-17β were similar between two groups.
出处
《南京农业大学学报》
CAS
CSCD
北大核心
1991年第1期59-63,共5页
Journal of Nanjing Agricultural University
关键词
母羊
发情
产羔
内分泌
睾酮
免疫
ewe
active immunization against testosterone
oestrus
hormone level
