Changes In Hormone Profiles, Growth F.actors, And Mrna Expression O f The Related Receptors In Crop Tissue, Relative Organ Weight, And Serum Biochemical Parameters In The Domestic Pigeon (Columba Livia)
文献类型: 外文期刊
作者: Xie, P.;Xie, P.;Xie, P.;Diao, E. J.;Diao, E. J.;Diao, E. J.;Gong, D. Q.;Wan, X. P.;Zou, X. T.;Bu, Z.;Xie, P.;Xie, P.;Xie, P.
作者机构:
关键词: pigeon; crop tissue; hormone; growth factor; serum biochemical parameter
期刊名称: POULTRY SCIENCE
ISSN: 0032-5791
年卷期: 2018 年 97 卷 6 期
页码:
摘要: The present study was conducted to determine the changes in concentrations of hormones and growth factors and their related receptor gene expressions in crop tissue, relative organ weight, and serum biochemical parameters in male and female pigeons during incubation and chick-rearing periods under artificial farming conditions. Seventy-eight pairs of 60-week-old White King pigeons with 2 fertile eggs per pair were randomly divided into 13 groups by different breeding stages. Serum prolactin and insulin-like growth factor-1 (IGF-1) concentrations in crop tissue homogenates were the highest in both male and female pigeons at 1 d of chick-rearing (R1), while epidermal growth factor (EGF) in female pigeons peaked at d 17 of incubation (I17) (P < 0.05). mRNA expression of the prolactin and EGF receptors in the crop tissue increased at the end of incubation and the early chick-rearing stage in both sexes. However, estrogen, progesterone, and growth hormone receptor expression each decreased during the early chick-rearing stage (P < 0.05). In male pigeons, IGF-1 receptor gene expression reached its peak at R7, while in female pigeons, it increased at the end of incubation. The relative weight of breast and abdominal fat in both sexes and thighs in the males was lowest at R7, and then gradually increased to the incubation period level. Serum total protein, albumin, and globulin concentrations increased to the highest levels at I17 (P < 0.05). Total cholesterol, triglyceride, and low-density lipoprotein reached their highest values at I17 in male pigeons and R25 in female pigeons (P < 0.05). In conclusion, hormones, growth factors, and their receptors potentially underlie pigeon crop tissue development. Changes in organs and serum biochemical profiles suggested their different breeding-cycle patterns with sexual effects.
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