Effects of Conjugated Linoleic Acid on Growth Performance,Nutrient Apparent Digestibility and Serum Biochemical Indices of Sika Deer
This experiment was conducted to study the effects of dietary different supplemental levels of conju-gated linoleic acid(CLA)on growth performance,nutrient apparent digestibility and serum biochemical indi-ces of sika deer.Sixteen 1-year-old male sika deer with average body weight of(40.25±2.38)kg were divided into 4 groups with 4 deer in each group.The control group(group G0)was fed a basal diet without CLA sup-plementation,and the experimental groups were fed experimental diets which the CLA supplemental levels were 0.25％(group G1),0.50％(group G2)and 1.00％(group G3),respectively.The experiment lasted for 80 days.The results showed as follows:1)the average daily gain(ADG)and average daily feed intake(ADFI)of groups G1,G2 and G3 were significantly higher than those of group G0(P＜0.05),and the feed to gain ratio was significantly lower than that of group G0(P＜0.05).The ADFI of group G2 was significantly higher than of group G3(P＜0.05).2)There were no significant differences in apparent digestibilities of dry matter(DM),acidic detergent fiber(ADF),neutral detergent fiber(NDF),calcium(Ca),and phosphorus(P)among all groups(P＞0.05).The apparent digestibilities of crude protein(CP)and ether extract(EE)of groups G2 and G3 were significantly higher than those of groups G0 and G1(P＜0.05).3)There were no sig-nificant differences in contents of total protein(TP),albumin(ALB),triglycerides(TG),low-density lipo-protein(LDL),high-density lipoprotein(HDL),urea nitrogen(UN),glucose(GLU)and activities of ala-nine aminotransferase(ALT)and aspartate aminotransferase(AST)in serum among all groups(P＞0.05).The serum alkaline phosphatase(ALP)activity of groups G2 and G3 was significantly higher than that of group G0(P＜0.05).The serum cholesterol(CHO)content of group G3 was significantly lower than that of group G1(P＜0.05).In conclusion,dietary CLA supplementation play a positive promoting role for the growth and development of sika deer,and the suitable CLA supplemental level is 0.50％.[Chinese Journal of Animal Nutrition,2024,36(7):4623-4629]
conjugated linoleic acidsika deergrowth performancedigestibilityserum biochemical indices
万方数据
维普
