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本交笼养对肉种公鸡睾丸发育及血浆生殖激素含量的影响
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引用本文:覃 飞,李富贵,秦子越,钟成麟,刘 嘉,朱 庆,尹华东,王 彦,李地艳,田尧夫,赵小玲.本交笼养对肉种公鸡睾丸发育及血浆生殖激素含量的影响[J].西北农业学报,2019,28(12):1919~1920
DOI:10.7606/j.issn.1004-1389.2019.12.001
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作者单位
覃 飞,李富贵,秦子越,钟成麟,刘 嘉,朱 庆,尹华东,王 彦,李地艳,田尧夫,赵小玲 (四川农业大学 动物科技学院,成都 611130) 
基金项目:国家自然基金面上项目(31872347);十三五四川省畜禽育种攻关(2016NYZ0043,2016NYZ0025);四川省科技计划(2018NZZJ003)。
中文摘要:探究本交笼养模式下活动空间与母鸡群体对肉种公鸡睾丸发育及生殖激素含量的影响,为本交笼养种鸡的繁殖性能研究提供基础数据。以大恒肉鸡S07系种鸡为研究对象,从10周龄开始,试验组公鸡采用本交笼养,对照组公鸡采用单笼和大方笼养。在育成期至性成熟高峰期10~30周龄时,进行3组公鸡的相对睾丸质量测定、睾丸HE染色、生精小管面积统计及血浆主要生殖激素含量的测定。结果表明:随着周龄的增加,各组公鸡的睾丸质量,血浆T、FSH、LH激素含量增加,并在30周龄时增至最大值,而血浆E2含量逐渐降低,在30周龄达到最低值;10周龄时各组公鸡的生精小管呈封闭状,15周龄时各组公鸡生精小管开始出现管腔,并开始有精子生成;在30周龄时,本交笼组公鸡的相对睾丸质量,生精小管面积,血浆T、FSH、LH含量均显著高于单笼组和大方笼组,后两组间无显著差异,而本交笼组公鸡的血浆E2激素含量显著低于单笼组和大方笼组,后两组间无显著差异。说明性成熟高峰期时,本交笼养公鸡的睾丸发育优于单笼养公鸡,造成此种差异的原因与本交笼内母鸡群体效应导致的公鸡生殖激素含量差异有关,而本交笼内活动空间对公鸡睾丸发育及生殖激素含量无影响。
中文关键词:本交笼  肉种公鸡  睾丸发育  生殖激素
 
Effects of Natural Mating System on Testicular Development and Plasma Reproductive Hormone Contents in Broiler Roosters
Abstract:We studied the effect of activity space and population efficiency on semen quality and spermatogenic cell apoptosis of roosters in natural mating system for providing basic data of further studies on reproductive performance.In the study,the males from line S07 of Daheng commercial broiler roosters as object.The roosters in the experimental group were housed in natural mating cage from 10 to 30 wk,while the roosters in the control group were reared in single and large cages,respectively.The roosters and hens were mixed in the natural mating system with the ratio of 3 males to 24 females.All males’ relative testicular mass,area of seminiferous tubules,plasma hormone contents were determined at the end of 10 and 30 weeks.The results showed that males’ testicular mass,plasma hormone(T,FSH,and LH) contents in all groups increased gradually with the increase of age,and it reached peaks at the end of 30 weeks,while males’ plasma E2 content decreased gradually,and dropped to the bottom at the end of 30 weeks; at the age of 10 weeks,the seminiferous tubules of all groups were closed.At the age of 15 weeks,the seminiferous tubules of each group began to appear lumen and spermatogenesis.At the age of 30 weeks,the relative testicular mass,area of seminiferous tubules,plasma hormone(T,FSH,and LH) contents of roosters in the natural mating cage group were significantly higher than that in the single and large cage groups,and there was no significant difference between the latter two groups,the plasma E2 hormone content in the natural mating cage group was significantly lower than that in the single and large cage groups,and there was no significant difference between the latter two groups.The results showed that the testicular development of the roosters in colony cage was better than that in the single cage at the peak of sexual maturity .The possible reason for the difference had relation with the difference of reproductive hormone contents of the roosters stimulated by the females in the natural mating cage,the cage space had no relation with roosters testicular development and reproductive hormone contents.
keywords:Natural mating system  Broiler rooster  Testicular development  Reproductive hormone
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