State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing 100193, China.
Poult Sci. 2018 Jan 1;97(1):196-202. doi: 10.3382/ps/pex288.
The objective of the present study was to evaluate the effect of bile acids derived from swine on the growth performance, carcass traits, serum lipid metabolites and intestinal enzyme activities in broiler chickens. Four hundred thirty-two 1-day-old Arbor Acres male broilers were randomly assigned to 4 treatments with 6 replicates of 18 chicks each for 42 d. The experimental treatments received a corn-soybean basal diet containing lard and were as follows: 0 (control), 40 mg, 60 mg, and 80 mg bile acids/kg of diet. Dietary of inclusion bile acids significantly increased average daily gain and decreased feed to gain ratio from d 21 to d 42 (P < 0.01). However, average daily feed intake was unaffected by dietary supplementation with bile acids. The dressing percentage and the percentage of thigh muscle in the carcass were notably (P < 0.01) higher for broilers fed diets supplemented with 60 and 80 mg/kg bile acids. In contrast, abdominal fat weight was reduced significantly (P < 0.01). In 42-day-old broilers, serum triglyceride, high density lipoprotein and low density lipoprotein concentrations were unaffected (P > 0.05) by bile acids supplementation. Supplementation with 60 and 80 mg/kg significantly increased the activity of duodenum lipase and lipoprotein lipase on d 21 and d 42, as well as decreased the activity of hormone sensitive lipase on d 42. Supplementation of diets with 60 and 80 mg/kg of bile acid can effectively enhance the activity of intestinal lipase and lipoprotein lipase and improve growth performance and carcass traits of broilers.
本研究旨在评估猪源胆汁酸对肉鸡生长性能、胴体特性、血清脂质代谢物和肠道酶活性的影响。将 432 只 1 日龄的 Arbor Acres 雄性肉鸡随机分为 4 个处理组，每组 6 个重复，每个重复 18 只鸡，试验期为 42 天。试验处理组接受含有猪油的玉米-大豆基础日粮，分别为：0（对照）、40、60 和 80mg/kg 日粮胆汁酸。日粮添加胆汁酸显著提高了 21-42 日龄的平均日增重，降低了饲料增重比（P<0.01）。然而，日粮添加胆汁酸对平均日采食量没有影响。日粮添加 60 和 80mg/kg 胆汁酸显著提高了肉鸡的屠宰率和腿肌百分比（P<0.01），而腹脂重显著降低（P<0.01）。42 日龄时，血清甘油三酯、高密度脂蛋白和低密度脂蛋白浓度不受胆汁酸添加的影响（P>0.05）。日粮添加 60 和 80mg/kg 胆汁酸显著提高了 21 日龄和 42 日龄十二指肠脂肪酶和脂蛋白脂肪酶的活性，并降低了 42 日龄激素敏感脂肪酶的活性。日粮添加 60 和 80mg/kg 胆汁酸可有效增强肠道脂肪酶和脂蛋白脂肪酶的活性，提高肉鸡的生长性能和胴体特性。
