文献类型： 会议论文

第一作者： Binbin Guo

作者： Binbin Guo ¹ ; Zichun Dai ² ; Aidong Sun ¹ ; Huiman Ren ² ; Zhendan Shi ³ ;

作者机构： 1.Key Laboratory of Protected Agriculture Engineering in the Middle and Lower Reaches of Yangtze River,Ministry of Agriculture and Rural Affairs

2.Laboratory of Animal Improvement and Reproduction,Institute of Animal Science,Jiangsu Academy of Agricultural Sciences,Nanjing,Jiangsu 210014,China

3.Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology,Nanjing,Jiangsu 210014,China

关键词： Egg turning;embryonic development;growth performance;goose;hatching performance;somatotropic axis

会议名称： International Symposium on Animal Environment and Welfare

主办单位：

页码： 131-137

摘要： A new type of incubator with egg turning angle adjusted larger to 60° and 70° was designed to improve goose egg hatching performance.We studied the impact on embryonic and gosling growth performances,as well as the endocrine and molecular regulation mechanisms of wider egg(WA)turning angle.Results showed that WA egg turning during incubation improved goose egg hatchability.The improved hatchability was associated with improvements in embryonic and muscular developments from embryonic days 22 to 29 through upregulation of gene expression,such as hypothalamic growth hormone-releasing hormone,pituitary growth hormone(GH),and liver insulin-like growth factor 1(IGF-1).The growth enhancing effect by the WA egg turning during incubation continued through the gosling post-hatch rearing period with higher body weight and relative leg and muscle weights.WA goslings also had higher plasma concentrations of growth-related hormones,such as GH,IGF-1 and triiodothyronine(T3).These results demonstrated that the WA egg turning during incubation could upregulate growth axis hormone gene expression and secretions to enhance gosling embryo development,hatchability and growth performance.

分类号： s8