Effect of Feeding Period on Expression of FAS mRNA in Fatty Liver of Goose

Landes geese were used as the materials to explore the expression rule of FAS mRNA in fatty liver through real-time fluorescence quantitative PCR method during overfeeding weeks.Fluorescence quantitative PCR results showed that the expression of FAS gene revealed an obvious increase during pre-feeding fold and pro-feeding 1 week,feeding 2 weeks,feeding 3 weeks and feeding 4 weeks,which were 0.035,0.128,0.253,0.876 fold and 1.009 fold enhancement,respectively.A positive genetic correlation between FAS mRNA expression in fatty liver tissue and feeding weeks was observed.These results suggested that FAS gene had a certain readjustment function during the developing process of fatty liver in goose and the process of body fat deposition.Thus,FAS is a regulation gene to promote fat deposit inside liver of goose,which provides valuable technical parameters for future studies of fatty liver.