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Abstract
ABSTRACT Studying the molecular mechanism of light regulation in goose reproduction can provide an important reference for domestic goose breeding. In this study, 2720 geese (first 18 weeks 2720, last 13 weeks 255) were divided into 12-h and 13-h light groups. The entire egg laying process was recorded and blood samples were taken at three times. The transcriptome was analysed on day 150. The results showed that melatonin and oestradiol increased gradually. On day 150, 17 genes were differentially expressed in the hypothalamus, pituitary and ovary. At this time, gonadotrophin-releasing hormone (GnRH) in the blood directly or indirectly inhibited the expression of GnRH in the pituitary and ovaries. The high oestradiol concentration in the blood suppressed the expression of neuropeptide Y in the hypothalamus, pituitary, and ovary tissues, and promoted the differentiation of ciliated epithelial cells in the oviduct. This study may provide a reference for light regulation of reproduction in poultry.
Published Version
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