Pyörälä E, Lähteenmäki P, Tiihonen H, Osterberg S
Acta Vet Scand. 1979;20(2):216-23. doi: 10.1186/BF03546613.
Acta vet. scand. 1979, , 216–223. — Luteinizing hormone immunoreactivity was measured in the venous plasma of four cycling Finnish Landrace sheep during the breeding season in connection with one synchronized estrus and the subsequent one. The ewes were slaughtered after the second estrus to establish the number of ovulations. To determine the LH concentration, a heterologous method of assay was used; this was based on the cross reaction of sheep plasma LH in a human LH radioimmunoassay system. As a result of the investigation, it was found that the peaks of LH were lower during the time of synchronized estrus and that these peaks occurred earlier than in the subsequent estrus. However, the differences were not statistically significant. On account of the limited material, the effect of the occurrence of the LH peak on the number of ovulations could not be established.
《兽医学报》1979年，第 216 - 223 页。——在繁殖季节，对四只处于发情周期的芬兰长白母羊的静脉血浆中的促黄体生成素免疫反应性进行了测定，测定与一次同步发情及随后的发情相关。母羊在第二次发情后被宰杀以确定排卵数量。为测定促黄体生成素浓度，采用了一种异源测定方法；该方法基于绵羊血浆促黄体生成素在人促黄体生成素放射免疫测定系统中的交叉反应。调查结果发现，在同步发情期间促黄体生成素的峰值较低，且这些峰值比随后发情时出现得更早。然而，差异无统计学意义。由于材料有限，无法确定促黄体生成素峰值的出现对排卵数量的影响。
