植物甾醇对肉鸭生产性能、血液胆固醇含量和胴体品质的影响

选用15日龄健康商品代樱桃谷肉鸭2400只,随机分成6组,每组4个重复,日粮中分别添加植物甾醇0(对照组)、10、20、40、80、160mg/kg。研究植物甾醇对肉鸭生产性能和血液中胆固醇含量的影响。结果表明:与对照组相比,添加植物甾醇试验组肉鸭的平均日增重、料重比和平均体重差异不显著(P>0.05)。但添加植物甾醇均降低了肉鸭血浆中总胆固醇(TC)和低密度脂蛋白胆固醇(LDL-C)的含量,且添加量20mg/kg的组差异显著(P<0.05)。此外,各试验组肉鸭的肌间脂肪含量均有提高,其中10mg/kg的组与对照组相比有显著性差异(P<0.05),这提示植物甾醇可能具有重新分配动物体内脂肪的效果。

Effects of Phytosterols on Performance, Plasma Cholesterol Content and Carcass Quality of Meat Duck

To study the effects of phytosterols on the performance and cholesterol content in plasma of meat duck,2400 commercial strain Cherry Valley meat ducks of 15d age were randomly allocated into 6 groups with 4 replicates each.The diet of the test groups were added with 6 levels of commercial phytosterols respectively(control group 0mg/kg,5 experimental groups:10mg/kg,20mg/kg,40mg/kg,80mg/kg,and 160mg/kg respectively).Results show that compared with the control group,there is no significant difference in average daily gain,feed conversion rate and average weight of the experimental groups(P>0.05);however,the total cholesterol and LDL cholesterol concentrations in plasma of the experimental groups all decrease,and the 20mg/kg group decreases significantly(P<0.05).Besides,the intramuscular fatin the 5 experimental groups all increases,and the 10mg/kg group increases significantly(P<0.05),which implies that phytosterols may have a effect of repartition of carcass fat.