姜曲海瘦肉型品系母猪早期生殖器官发育及生殖激素分泌的研究  

Studies on the early sexual organs development and reproductive hormones of Jiangquhai meat-type line gilts

作　　者：朱荣生[1] 张牧[1] 经荣斌[1] 王宵燕[1] 张金存 杨元青 陈华才 

机构地区：[1]扬州大学动物科学与技术学院 [2]江苏省姜堰市种猪场,江苏姜堰225500

出　　处：《扬州大学学报（农业与生命科学版）》2005年第3期35-39,共5页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金：江苏省"十五"科技攻关项目(BE2001364)

摘　　要：以姜曲海瘦肉型品系猪零世代及其亲本杜枫姜(杜洛克×枫泾猪×姜曲海猪)母猪为研究对象,探讨0～75日龄母猪生殖器官的生长发育和生殖激素的分泌规律.结果表明: 零世代与亲本母猪生殖器官从60日龄开始表现出快速生长,与该期LH、FSH、E 2水平升高密切相关,说明这3种激素浓度的上升,加速了生殖器官的生长,尤以卵巢最为明显.零世代母猪卵巢75日龄时有三级卵泡出现,亲本则发生在60日龄, 75日龄时卵巢表面有囊状卵泡出现,并观察到成熟卵泡,零世代母猪卵巢卵泡发育比亲本稍迟,在很大程度上保持了原有品种性成熟早的优点.The experiment was conducted to study the early sexual organ development and reproductive hormone secretion, and how they interact each other in the Jiangquhai meat-type line gilts and the parental DFJ （Duroc × Fengjing×Jiangquhai） gilts from birth to 75 days of age. 4 gilts of each group （n=24） were slaughtered every 15 days from birth to 75 day. Before slaughter, blood samples were collected 4 times from precava at 30 minutes interval. The results showed that ： Reproductive organs grew rapidly at 60 day, close correlating with the changing of high concentrations of LH, FSH and E2 at this phase. It suggested these three hormones＇ ascents accelerated the growth of the sexual organs, especially the ovary. At 75 day, tertiary follicles were observed in the meat-type line gilts, and graafian follicles were observed in DFJ gilts. Follicle development was little later in the meat-type line gilts than in DFJ gilts. To a large extent, the advantage of precocious puberty was maintained in the meat-type line gilts.

关 键 词：母猪 生殖器官 生殖激素 

分 类 号：S828.3[农业科学—畜牧学]