纳米硒对产蛋鸡生产性能、血清免疫和生化指标及蛋黄中硒含量的影响

发布时间：2018-05-14 06:16

本文选题：产蛋鸡 + 纳米硒　；参考：《动物营养学报》2017年01期

【摘要】：本试验旨在研究纳米硒对产蛋鸡生产性能、血清免疫和生化指标及蛋黄中硒含量的影响。选取324只29周龄体重相近的健康产蛋鸡,随机分为6个组,每组6个重复,每个重复9只鸡。对照组(A组)饲喂基础饲粮,试验组(B、C、D、E、F组)分别饲喂在基础饲粮中添加0.1、0.2、0.3、0.4、0.5 mg/kg纳米硒的饲粮。预试期为7 d,正试期为63 d。结果表明:1)与对照组相比,第21天C组的料蛋比显著降低(P0.05),第42、63天B、D组的破壳率显著降低(P0.05)。各组产蛋率、平均蛋重均无显著差异(P0.05)。2)与对照组相比,第42天,E组血清免疫球蛋白M(Ig M)、免疫球蛋白A(Ig A)含量显著提高(P0.05);各组血清免疫球蛋白G(Ig G)含量差异不显著(P0.05);第63天,各组血清Ig M、Ig A、Ig G含量均差异不显著(P0.05)。3)与对照组相比,第42天,D组血清白蛋白(ALB)含量显著提高(P0.05),D组血清甘油三酯(TG)和葡萄糖(Glu)含量极显著降低(P0.01),F组血清总蛋白(TP)含量显著升高(P0.05),E、F组血清尿酸(UA)含量显著降低(P0.05);第63天,F组血清TP含量显著提高(P0.05),F组血清碱性磷酸酶(ALP)活性和Glu含量显著降低(P0.05)。4)与对照组相比,第21天,C、D、E、F组蛋黄硒含量显著或极显著提高(P0.05或P0.01);第42天,试验组蛋黄硒含量均显著或极显著提高(P0.05或P0.01);第63天,C、D、E、F组蛋黄硒含量极显著提高(P0.01)。各试验期蛋黄硒含量均以F组最高,且第42天各试验组蛋黄硒含量均高于第21、63天。与对照组相比,除第42天试验组蛋黄锌含量显著高于对照组(P0.05)外,各组各试验期蛋黄铁、锰、锌、铜含量均无显著差异(P0.05)。由此可见,饲粮添加纳米硒能改善产蛋鸡的生产性能,提高血清免疫力,促进机体蛋白质的合成,降低血液胆固醇含量,促进机体健康,提高蛋黄中硒含量。综合考虑,以饲粮添加0.4 mg/kg纳米硒饲喂42 d作用效果较明显。
[Abstract]:The purpose of this experiment was to study the effects of nano selenium on performance, serum immune and biochemical indexes and selenium content in yolk of laying hens. 324 healthy laying hens of similar weight at 29 weeks old were randomly divided into 6 groups with 6 repeats in each group and 9 chickens in each replica. The control group (group A) was fed with basic diet, and the experimental group (group B) was fed with 0.1g 0.2g 0.3g 0.3g 0.40.5 mg/kg nanometer selenium in the basal diet. The pretest period was 7 days and the positive test period was 63 days. The results showed that compared with the control group, the feed to egg ratio of group C was significantly lower than that of control group on the 21st day (P 0.05), and the rate of broken shell of group D was significantly lower than that of group B (P 0.05) on day 42, 63. There was no significant difference in laying rate and average egg weight between each group and control group (P < 0.05). Compared with the control group, the content of serum immunoglobulin M(Ig (M(Ig), immunoglobulin A (Ig A) in E group increased significantly (P 0.05) on the 42nd day, but the content of serum immunoglobulin G(Ig (G(Ig) in each group was not significantly different from that in control group (P 0.05); on the 63rd day, there was no significant difference in serum immunoglobulin G(Ig G content. There was no significant difference in the levels of serum Ig MU Ig Ag G between the three groups and the control group (P0.05. 3). On the 42nd day, the content of serum albumin (ALBB) in group D significantly increased, the contents of serum triglyceride (TG) and glucose (Glug) in group D were significantly decreased, the content of serum total protein (TPTP) in group P0.01C (F) was significantly increased, the content of serum uric acid (UAA) in group P0.05 was significantly lower than that in group C (P 0.05), and that in group F was significantly lower than that in group F on the 63rd day. The activity of alkaline phosphatase (ALP) and the content of Glu decreased significantly (P 0.05) compared with the control group (P < 0.05), compared with the control group, the content of TP in the serum of the control group was significantly higher than that of the control group. On the 21st day, the content of selenium in the yolk of the test group was significantly higher than that of the control group (P0.05 or P0.01); on the 42nd day, the content of selenium in the yolk of the test group was significantly or extremely significantly higher than that of the control group (P0.05 or P0.01); on the 63rd day, the selenium content of the yolk in the group of C _ (DX) EO _ F increased significantly (P _ (0.01). The content of selenium in yolk of group F was the highest in each trial period, and the selenium content of yolk in group F was higher than that in group F on day 42. Compared with the control group, the content of zinc in yolk of the experimental group was significantly higher than that of the control group on the 42nd day (P 0.05), and there was no significant difference in the contents of iron, manganese, zinc and copper in the yolk of each group. It can be seen that adding nanometer selenium to diet can improve the performance of laying hens, improve serum immunity, promote the synthesis of body protein, reduce blood cholesterol content, promote body health and increase selenium content in egg yolk. Considering synthetically, the effect of adding 0.4 mg/kg nanometer selenium to diet for 42 days was obvious.
【作者单位】：湖南农业大学动物科学技术学院湖南省畜禽安全生产协同创新中心;奥格生物技术(上海)有限公司;
【基金】：湖南农业大学产学研合作项目(11110,13098)
【分类号】：S831.5

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