Wanxi White goose and Yangzhou goose exhibited differences in the level of egg production, serum biochemical, hormones and related gene expression under the same natural photoperiod regulation

Egg production is seasonally regulated by the photoperiod in geese. To evaluate effect of natural on egg production, 30 males and 120 females 270-day-old Wanxi white geese Yangzhou were selected divided into two groups according to breed. Both raised under photoperiod. Compared with goose, goose had a lower laying rate higher expression levels follicle-stimulating hormone receptor anti-Müllerian 2 (AMHR2) ovary at peak-laying period. early-laying period, both breeds serum uric acid triacylglycerol levels, cholesterol high-density lipoprotein The level luteinizing (LH) pre-laying period was than that other egg-laying periods goose. In conclusion, affected geese, which accompanied changes biochemical parameters reproductive levels. concentration LH might be associated maturation oviducts. AMHR2 cause sensitivity follicles FSH.