Effects of different protein levels diets with balanced methionine on growth performance,hormones,skin antioxidant,and hair follicle traits in Wanxi white geese
The purpose of this study was to study the effects of early feeding of diets with different protein levels balanced methionine on the growth performance,feather-related hormones,skin antioxidant capacity,and hair follicle traits in Wanxi white geese.Ninety one-day-old white geese with similar weight,half male and half female,were randomly divided into three groups,with five replicates in each group and six geese in each replicate.The geese were fed with 19.93％,18.01％and 15.95％crude protein diets,respectively,and the methionine content was 0.5％in each group.The experimental period was 14 days.The results showed that the serum luteinizing hormone(LH)content in the 18.01％CP group was significantly higher than that in the 19.93％CP group(P＜0.05),and extremely higher than that in the 15.95％CP group(P＜0.01).The total antioxidant capacity(T-AOC)in the chest skin of the 18.01％CP group was significantly higher than that of the 19.93％CP group(P＜0.01),and the glutathione peroxidase(GSH-Px)activity in the chest skin of the 18.01％CP and 15.95％CP groups was significantly higher than that of the 19.93％CP group(P＜0.05),and the activities of superoxide dismutase(SOD)was extremely higher than that of the 19.93％CP group(P＜0.01).The diameter of abdominal primary follicles in the 18.01％CP group was significantly higher than that in the other two groups(P＜0.05),the diameter of the chest secondary follicles in the 15.95％CP group was significantly lower than that in the other two groups(P＜0.01),and the diameter of abdominal secondary follicles in the 19.93％CP group was significantly lower than that in the 18.01％CP group(P＜0.01).The density of the barb in the back of the 18.01％CP group and the 15.95％CP group was significantly lower than that of the 19.93％CP group(P＜0.01).The results show that when the methionine content in the diet met the body requirements of the Wanxi white geese(0.5％),the appropriate reduction of the protein level in the diet(18.01％)can't affect the growth performance of the goslings,and can promote the expression of luteinizing hormone in the serum,improve the antioxidant capacity in the skin,regulate the feather growth performance of the Wanxi white geese,improve the quality of feather,and finally achieve the effect of reducing breeding costs and maintaining down production.
protein levelsWanxi white geeseserum hormoneantioxidant capacityfollicle densityfeather performance
国家科技期刊平台
NSTL
万方数据
