枫泾公猪初情期前后外周血清中睾酮、促黄体素及皮质醇的含量变化  

CHANGES OF PERIPHERAL SERUM TESTOSTERONE, LUTEINIZING HORMONE AND CORTISOL AROUND PUBERTY IN THE FENGJING BOARS

作　　者：焦淑贤[1] 王瑞祥[1] 蔡正华[1] 黄少华[1] 赵尚吉[1] 廖述人[1] 

机构地区：[1]中国农科院畜牧研究所

出　　处：《畜牧兽医学报》1990年第1期20-25,共6页ACTA VETERINARIA ET ZOOTECHNICA SINICA

摘　　要：用放射免疫法测定并研究了在初情期间24小时内和交配过程中的3头枫泾公猪外周血清促黄体素(LH)、睾酮(T)和皮质醇(F)的含量及分泌范型。3头公猪平均于102日具有射精能力,开始进入初情期。初情期前(76～88日龄)T和LH含量较低,其平均值分别为1.28±0.44和1.57±0.09ng/ml。102日龄后,T含量迅速升高,平均为8.43±0.87ng/ml,与初情期前比较,差异极显著,(P<0.01);LH也随之升高,平均为2.04±0.15ng/ml,但前、后差异不明显(P>0.05)。初情期间24小时内,LH含量波动在1.04±0.40～2.25±0.87ng/ml之间,总平均为1.64±0.28ng/ml;T和F均呈突发性分泌方式,总平均值分别为4.32±1.49和14.79±9.61ng/ml,二者的分泌呈极显著正相关(r=0.88)。T和F的含量早上显著高于夜间(24点)。3头公猪在106日龄分别与发情母猪交配过程中,三种激素均处于较高水平,射精阶段T值显著高于爬下后5～6分钟的值,而LH和F值无显著变化。综上所述,初步揭示枫泾公猪平均于108日龄已建立睾酮、促黄体素和皮质醇性成熟的分泌范型。The secretory patterns and the changes of peripheral serum testos-terone(T),luteinizing hormone(LH) and cortisol(F) around puberty, during 24 hours at puberty either before or after copulation were assessed in three Fengjing boars by RIA. The results showed that the ejaculation occurred at 102 days of age on the average. Serum T and LH were lower before puberty(76~88 days of age), 1.28?.44ng/ml and 1.57 ±0.09ng/ral, respectively. After 102 days old, serum T increased rapidly and fluctuated at a higher level ( 8.43±0.87ng/ml). The difference of T before and after 102 days was very significant(P<0.01). serum LH also rised after 102 days of age, (2.04± 0.15ng/ml), but there was no significant difference(P>0.05) before and after puberty. During 24 hours at puberty ( 108 days ) serum LH concentration was 1.64±0.28ng/ ml and fluctuated at 1.04~2.25ng/ml based on hourlysampling.No sig- nificant difference was observed ( P>0.05 ) . Serum T and F were secreted episodically. Their 24 hour average values were 4.32±1.49ng/ml and 14.79±9.61ng/ml, respectively.The secretion of T and F showed a marked positive correlation(r = 0.88).Serum T and F were significantly higher in the morning than that at midnight(P<0.05). These three hormones remained higher levels during mating at 106 days of age, as compared with the 24 hour average value at 108 days for three boars. Serum T was significantly higher during ejaculation than that at 5 ~ 6 minutes after mounting(P<0.05). However, serum LH and F were not significantly altered(P>0.05) during mating activity. The results suggested that a normal secretory patterns of T, LH and F had established at least at 108 days of age in average in the Fengjing boars.

关 键 词：公猪 初情期 睾酮 促黄体素 皮质醇 

分 类 号：S828.3[农业科学—畜牧学]