动物营养学报Issue(6)：1779-1786,8.DOI:10.3969/j.issn.1006-267x.2015.06.014
包被氧化锌对断奶仔猪生长性能、血清生化指标及营养物质表观消化率的影响
Effects of Coated ZnO on Growth Performance, Serum Biochemical Indices and Nutrient Apparent Digestibility of Weaner Piglets
摘要
Abstract
This trial was conducted to study the effects of coated ZnO ( C-ZnO) on the growth performance, the serum biochemical indices and nutrient apparent digestibility of weaner piglets, by compared with uncoated ZnO, aimed at research the effects of C-ZnO instead of traditional ZnO, and discussed production practice to reduce the possibility of the dosage of ZnO and enhance its effect. A total of 120 Large-White weaner piglets were randomly divided into 5 groups with 4 replicates per group and 6 piglets per replicate. Piglets in control group were fed a basal diet, the four groups were fed the basal diet supplemented with 2 400 mg/kg ZnO and 1 800, 2 400, 2 740 mg/kg C-ZnO, respectively. The trial lasted for 28 days. The results showed as follows:compared with control group, the average daily gain in the group supplemented with 2 400 mg/kg C-ZnO was increased significantly ( P<0.01) , the ratio of feed to gain was decreased significantly ( P<0.05) , and the di-arrhea rate was decreased significantly ( P<0.01) . The average daily gain of 2 400 mg/kg C-ZnO group was significantly higher than that of ZnO group ( P<0. 01 ) . Compared with control group, serum contents of growth hormone ( GH) , immunoglobulin G ( IgG) , immunoglobulin M ( IgM) and the digestibility of crude protein and ether extract were significantly increased in 2 400 mg/kg C-ZnO group ( P<0.01) . Compared with control group, a significant reduction in E. coli number ( P<0.01) and a significantly increase in Bifidobacteria number were also observed in 2 400 mg/kg C-ZnO group ( P<0.01) . Compared with ZnO group, serum GH content was significantly increased (P<0.05) and alkline phosphatase (AKP) activity was significantly de-creased ( P<0.05) in 2 400 mg/kg C-ZnO group. There were no differences in the growth performance, serum indices and nutrients apparent digestibility between the 1 800 mg/kg C-ZnO and ZnO groups ( P>0.05) . The diarrhea rate in ZnO groups was significantly decreased ( P<0.05) compared with control group, but the other growth performance had no significant difference ( P>0.05) . In conclusion, supplementation of 2 400 mg/kg coated ZnO in weaner piglets diet can improve the growth performance, improve the nutrient digestible situa-tion and control the diarrhea rate. The effect of 2 400 mg/kg uncoated ZnO is similar to that of 1 800 mg/kg coated one.关键词
包被氧化锌/断奶仔猪/生长性能/血清生化指标/腹泻率/营养物质表观消化率Key words
coated ZnO/weaner piglet/growth performance/serum biochemical indices/diarrhea rate/nu-trient apparent digestibility分类
农业科技引用本文复制引用
朱宇旌,张勇,苏欣,李方方,张鑫,况应谷,郑丽莉,高原,孟玲,郭福来..包被氧化锌对断奶仔猪生长性能、血清生化指标及营养物质表观消化率的影响[J].动物营养学报,2015,(6):1779-1786,8.基金项目
国家自然科学基金(31101253,30972112) （31101253,30972112）
