Enhancing gosling growth and secretion of somatotrophic and thyrotrophic axis hormones through egg turning during incubation
文献类型： 外文期刊
作者： Guo, B. 1 ; Dai, Z. 1 ; Chen, R. 1 ; Liu, J. 1 ; Shi, Z. 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Minist Agr & Rural Affairs, Key Lab Protected Agr Engn Middle & Lower Reaches, Inst Anim Sci, Nanjing, Jiangsu, Peoples R China
2.Jiangsu Acad Agr Sci, Inst Anim Sci, Lab Anim Improvement & Reprod, Nanjing, Jiangsu, Peoples R China
关键词： Goose; egg turning angle; incubation; growth performance; somatotrophic and thyrotrophic hormones
期刊名称：BRITISH POULTRY SCIENCE （ 影响因子：1.892； 五年影响因子：2.429 ）
ISSN： 0007-1668
年卷期：
页码：
收录情况： SCI
摘要： 1. Growth performance of Yangzhou geese hatched from eggs with turning angles of 50 degrees or 70 degrees was evaluated in association with serum hormones and somatotrophic gene mRNA expression. 2. Egg turning at 70 degrees significantly (P< 0.05) increased hatchability, gosling quality and hatching weight. Gosling post-hatch body weight, leg and breast muscle weight in the 70 degrees turning group was significantly heavier until 50 d of age. 3. Serum concentrations of GH were significantly higher until 30 d of age in the 70 degrees turning group goslings, and those of IGF-I and T3 were higher from hatching to 50 d of age. 4. The mRNA expression of GHRH, pituitary GH, liver and leg muscle IGF-I were all significantly higher at 1 and 30 d of age after hatch, but not at 70 d after hatch, in the 70 degrees turning group. 5. Egg turning at 70 degrees during incubation improves embryo and gosling quality and growth performance through up-regulation of gene expression and secretion of somatotrophic axis hormones, GHRH, GH and IGF-I, as well as T3.
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