| 雅南猪(南河系)公猪生殖器官发育与生殖机能发展的研究 |
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| 引用本文： | 肖永祚,乔绍权,李芳琼,刘世建.雅南猪(南河系)公猪生殖器官发育与生殖机能发展的研究[J].四川农业大学学报,1983(1). |
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| 作者姓名： | 肖永祚 乔绍权 李芳琼 刘世建 |
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| 作者单位： | 四川农学院牧医系，四川农学院牧医系，四川农学院牧医系，四川农学院牧医系 |
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| 摘 要： | 试验共用不同日龄雅南(南河系)公猪112头。经观测结果,公猪生殖器官的相对生长率以90日龄前最高。睾丸曲精细管外径在初生、20、30、60及90日龄分别为58.2,65.7,79.9,154.6,及193.9微米,240日龄为267微米。曲精细管及附睾尾管腔分别于50及70日龄发现精子。首次采出有精子精液在71日龄(体重10.5公斤左右),精液量2.4毫升,活力23％,密度0.1亿/毫升。105日龄附睾尾液中精子密度平均28.8亿/毫升,135日龄平均38.37亿/毫升。4月龄一次射精精液量平均20.6毫升,活力73.3％,密度1.09亿/毫升,6月龄一次射精精液量平均41.4毫升,活力83.3％,密度1.19亿/毫升。故雅南(南河系)公猪属于性早熟型。
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THE OBSERVATION ON THE DEVELOPMENT OF REPRO—DUCTIVE ORGANS AND SEXUAL FUNCTIONS OF YOUNG BOARS OF THE YA—NAN BREED |
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| Abstract: | In this experiment 112 young boars of the Ya-nan breed at 1-365 days of age in Qionglai county, Sichuan, were studied anatomically and histologically. The results of this investigation indicated that the relative growth rate of the genital organs of boars was much higher before 90 days than other stages of age. The diameters of seminiferous tubules at 1, 30,60 and 90 days were 58.2,79.9, 154.6 and 193.9 μ respectively,and at 240 days,267 μ. The sperm first appeared in the lumen of seminiferous tubules and cauda epididymis at 50 and70 days respectively, and young boars were able to ejaculate semen with sperm at 71 days, when the body weight was 10.5 Kg. In addition, the semen which was evaluated by weekly collected samples from young boars gave 20.6 ml as the average volume per ejaculate, 73.9% as the average motility, 109 millions/ml as the average concentration for 4 months of age, and gave 41.4 ml, 83.6%, 119 millions/ml respectively for 6 months of age. These results suggested that the young boars of the Ya-nan breed were earlier in sexual maturity, and its sexual maturity was a gradual process too, and that, although its sperm production and sexual desire began concurrently in increasing intensity at about 71 days of age, the boars of the Ya-nan breed are not considered to be fit for service before 6 months of age. |
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