Effects of zinc-methionine on growth performance, intestinal flora and immune function in pigeon squabs
文献类型： 外文期刊
第一作者： Wang, Y.
作者： Wang, Y.;Zhao, M. L.;Wang, M. Y.;Cheng, X. C.;Yi, L.;Wu, J. Q.;Wang, Y.
作者机构：
期刊名称：BRITISH POULTRY SCIENCE （ 影响因子：2.095； 五年影响因子：2.266 ）
ISSN： 0007-1668
年卷期： 2014 年 55 卷 3 期
页码：
收录情况： SCI
摘要： 1. Different concentrations of zinc-methionine (Zn-Met) were given to pigeon squabs, and the resulting effects on growth, immune functions and intestinal microflora were investigated from hatching to 28d of age. A total of 180 artificially hatched pigeon squabs were randomly allotted to each of three treatments with three replicates of 20 squabs. The three treatments given were either oneml (2mg/ml) Zn-Met, oneml (10mg/ml) Zn-Met or oneml 0.9% NaCl solution.2. The results showed that Zn-Met improved the growth performance of squabs. The average daily and average weekly weight gain was significantly greater in squabs treated with Zn-Met than in the control group.3. The group given 2 and 10mg supplemental Zn-Met had heavier thymus, spleen and bursa of Fabricius than the control group at d 28.4. Maternal antibody titres against Newcastle disease haemagglutination inhibition and alpha-naphthyl acetate esterase were significantly higher in squabs treated with supplemental 2 and 10mg Zn-Met compared to the control group at d 14 and d 28.5. Additionally, the squabs given supplemental 2mg Zn-Met exhibited significantly higher Bacillaceae, Lactobacillus, Enterococcus and Bifidobacterium populations at d 14 and d 28, but lower Escherichia coli populations at d 28 compared to the control group. On the contrary, Lactobacillus, Enterococcus and Bifidobacterium populations were significantly decreased with 10mg Zn-Met at d 28.6. This study indicates that supplementation with Zn-Met has a positive effect on growth performance, immune function and regulation of intestinal flora in pigeons. An inclusion level of 2mg seems to be better than 10mg Zn-Met per day per bird.
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