【摘要】 用放射免疫测定法测定了宁夏滩羊母羊(13只)外周血清中促黄体素(LH)、孕酮及雌二醇—17β的含量及其变化。血清LH的含量,在黄体期,其值很低,为5.0±0.41ng/ml,到发情开始后约6—12小时增至75.13±17.64ng/ml。孕酮含量的变化,在周期的黄体期,其值最高为2.84±0.10ng/ml;而在发情开始到发情后第二天最低0.52±0.06ng/ml。雌二醇—17β的含量是在发情开始前6—24小时时上升的;其值的变化范围是从黄体期的14.86±1.24Pg/ml到发情开始时的38.7±5.8Pg/ml。更多还原

【Abstract】 Summary The concentrations of luteinizing hormone(LH), progesterone and 17β-oestradiol in the peripheral serum of thirteen Tanyang ewes were measured by radioimmunoassay throughout the oestrous cycle. The concentrations of serum LH increased from a very low value of 5.0±0.4 ng/ml during the luteal phase to 75.13±17.64 ng/ml about 6-12 hr. after the onset of oestrus. Progesterone varied in a cyclic manner with the highest value of 2.84±0.10 ng/ml at the luteal phase and a lower value of 0.52±0.06 ng/ml during oestrus and two days after it. The concentration of 17β-oestradiol began to increase 6-24 hr. bofore the onset of oestrus. It varied from 14.86±1.24 pg/ml during the luteal phase to 38.70±5.8 pg/ml at the onset of oestrus.更多还原