Effects of composite vitamin nanoemulsion on growth_performance and immunity in broilers | 复合维生素纳米乳对肉仔鸡生产性能和免疫力的影响

chinois. 研究复合维生素纳米乳对肉仔鸡生产性能和免疫力的影响。选用1日龄爱拔益加（AA）肉仔鸡400只，随机分为4组，每组5个重复，每个重复20只鸡(公母各半)。在基础日粮相同的前提下，研究不含（对照组）或含有稀释1 000倍（Ⅰ组）、2 000倍（Ⅱ组）、5 000倍（Ⅲ组）3个剂量复合维生素纳米乳的饮水，对肉仔鸡不同生长阶段生产性能和免疫力的影响。与对照组相比，试验Ⅰ组鸡死淘率、料质量比降低，出栏质量增加，差异均显著（P0.05）；试验Ⅰ组鸡血清中白蛋白含量和碱性磷酸酶活性显著（P0.05）高于对照组，各试验组总胆固醇、甘油三酯含量与对照组相比下降，但差异不显著（P0.05）；各组之间新城疫HI滴度差异不显著（P0.05），试验Ⅰ组T淋巴细胞比例显著（P0.05）高于对照组；各试验组半净膛率显著（P0.05）高于对照组，全净膛率、胸肌率、腿肌率和瘦肉率仅试验Ⅰ、Ⅱ组显著（P0.05）高于对照组；试验Ⅰ组鸡腿肌的红度显著（P0.05）低于对照组，黄度、亮度显著（P0.05）高于对照组；各组之间免疫器官指数差异不显著（P0.05）。复合维生素纳米乳可在一定程度上提高肉鸡的生产性能和免疫力，在养殖业中具有广泛的应用前景。

anglais. The research was to study the effects of composite vitamin nanoemulsion on growth performance and immunity of broilers. Four hundred one-day-old Arbor Acres chickens were randomly grouped to four treatments consisting of five replicates of 20 chicks（half male and half-female）. On the basis of basal diet, we studied the effects of drinking water without (control) composite vitamin nanoemulsion and with three dosages of composite vitamin nanoemulsion of 1 000 times(Ⅰ), 2 000 times(Ⅱ), 5 000 times(Ⅲ) dilute solution on growth performance and immunity in broilers. The results showed that in the Ⅰ group the number of dead chickens and feed/gain decreased and slaughter weight increased, and there were significant differences (P0.05); Serum albumin and alkaline phosphatase levels in the Ⅰ group were siginificantly higher (P0.05) than that in control group, and the total cholesterol and triglyceride content in every test group decreased compared with the control group, but the difference was not significant (P0.05); ND HI titers had no significant difference (P0.05) in every group, T-lymphocyte percentage in the Ⅰ group were significantly (P0.05) higher compared with that of the control group; Semi-eviscerated percent in every test group was higher than that of the control group, and there were significant difference (P0.05); Full-eviscerated percent, pectoral rate, thigh rate and muscle rate in the Ⅰ and Ⅱ groups were significantly (P0.05) higher than those of the control group; In group Ⅰ the redness of chicken was significantly (P0.05) lower and the yellowness and brightness were significantly (P0.05) higher than that of the control group; The immune organ index had no significant difference (P0.05) in every group. To some extent, composite vitamin nanoemulsion can be used to increase the growth performance and immunity in broiler, and it has a wide range of application prospect in the aquaculture industry.