中国畜牧杂志2017，Vol.53Issue(8)：65-70,6.DOI:10.19556/j.0258-7033.2017-08-065
不同能量摄入量对育成期北京鸭卵巢发育的影响
Effect of Dietary Energy Intake on the Ovarian Development of Breeding Pekin Duck during the Growing Period
摘要
Abstract
The present experiment was conducted to examine the effect of energy intake on ovary development in Pekin ducks during the growing period according to the morphology of ovary,plasma profiles,and gene expression.A total of 240 8-week-old Pekin ducks were randomly assigned to 5 dietary treatments of 10.00,10.65,11.30,11.95,12.60 MJ/kg ME with an average energy intake of 1.63 1.73,1.84,1.94,and 2.05 MJ/d by restricted feeding,respectively,and fed for 12 weeks.In our study,high energy intake led to significant increment in body weight and weight gain of ducks (P＜0.05) and it may be due to more fat deposition at this instance.As energy intake increased from 1.63 to 2.05 MJ/d,skin and abdominal fat increased significantly and it was also accompanied with significant increase in plasma.On the other hand,high energy intake stimulated ovary development.Higher ovary percentage was observed (P＜ 0.05) at 1.94 and 2.05 MJ/d and it was also accompanied with larger follicle size according to histological morphology.Furthermore,ovary development might be controlled by gene regulation and it was supported by significant increase in gene expression of follicle-stimulating hormone receptor (FSHR),estrogen receptor (E2R) and leptin receptor (LEPR) at high energy intake.However,the highest (P＜ 0.05) expression level of the luteinizing hormone receptor (LHR) was 1.84 MJ/d group.In conclusion,the energy intake regulate ovary development by the expression of reproduction-related gene and stimulate more fat depostion.关键词
饲粮能量/脂肪沉积/卵巢发育/北京鸭Key words
Dietary energy/Fatty deposition/Ovarian development/Pekin duck分类
农业科技引用本文复制引用
孟润泽,吕占军,侯水生,谢明..不同能量摄入量对育成期北京鸭卵巢发育的影响[J].中国畜牧杂志,2017,53(8):65-70,6.基金项目
现代水禽技术体系建设专项(CARS-43) （CARS-43）
