Abstract:
The study was to investigate the effects of glycerol hydrolase(GH) and soybean lysophospholipid(SL) on growth performance, intestinal digestive enzyme activities, and gene expression of lipid metabolism key enzymes in white feather broilers. Two hundred eighty-eight one-dayold Ross-308 white feathered broilers were randomly divided into a control group and three treatment groups: group I(SL: 200 mg·kg
-1), group Ⅱ(GH: 200 mg·kg
-1) and group Ⅲ(SL+GH: 200 mg·kg
-1+200mg·kg
-1). The control group was fed the basal diet. All of the broilers were fed their corresponding diet for 42 consecutive days. The results showed that:(1) Compared with the control group, feed-weight rate was significantly reduced in all the experimental groups(P<0.05).(2) The serum triglycerides were significantly lower in all the experimental groups(P<0.05), low-density lipoprotein cholesterol was significantly lower in experiment groups I and Ⅲ(P<0.05), liver Apolipoprotein A and B were significantly higher in experiment group Ⅲ(P<0.05), and liver free fatty acids were significantly higher in all the experimental groups(P<0.05).(3) Duodenal amylase was significantly higher in experiment groups I and Ⅲ(P<0.05), the mRNA relative expression of fatty acid synthase, malic enzyme and stearoyl-CoA desaturase were significantly higher in the liver of all the experiment groups(P<0.05), and group Ⅲ was the highest(P<0.05). Overall, the compounds of GH and SL could increase the growth performance, intestinal digestive enzyme activities, and gene expression of lipid metabolism key enzymes in broilers compared to the single addition of GH or SL.