饲粮添加酵母寡聚糖对高密度养殖条件下蛋鸡生产性能、蛋品质、血清生化指标和肠道健康的影响

发布时间：2018-02-13 17:17

本文关键词： 酵母寡聚糖蛋鸡生产性能蛋品质血清生化指标肠道健康　出处：《动物营养学报》2017年03期 　论文类型：期刊论文

【摘要】：本试验旨在研究饲粮中添加酵母寡聚糖(YOS)对高密度养殖条件下蛋鸡生产性能、蛋品质、肠道黏膜形态结构及微生物区系分布、血清生化指标和肠道功能相关基因表达的影响。选取864只12周龄海兰褐蛋鸡,随机分为6个组,每组12个重复,每重复3个笼子,每个笼子3只(低密度)或5只(高密度)。对照组饲喂基础饲粮,试验组饲喂在基础饲粮中分别添加250和500 g/t YOS的饲粮,试验期18周。结果表明:1)饲粮添加YOS能显著提高蛋壳颜色的均匀度(P0.05)。2)饲粮添加YOS增加了蛋鸡肠道绒毛高度/隐窝深度值(P=0.059),其中250 g/t YOS组显著高于对照组(P0.05)。3)饲粮添加YOS使得蛋鸡空肠乳酸杆菌数量显著增加(P0.05),大肠杆菌数量显著减少(P0.05),其中250 g/t YOS组菌群变化较为明显。4)饲粮添加YOS显著降低了蛋鸡血清中内毒素含量(P0.05),提高了免疫球蛋白A含量(P=0.090),且250 g/t YOS组较对照组显著提高(P0.05)。由此可见,饲粮中添加YOS能够改善高密度养殖条件下蛋鸡肠道功能,添加剂量以250 g/t的综合效果较佳。
[Abstract]:The purpose of this study was to study the effects of yeast oligosaccharide (YOS) on performance, egg quality, intestinal mucosal morphology and microflora distribution of laying hens under high density culture. Effects of serum biochemical parameters and intestinal function related genes expression. 864 12-week-old Hailan brown laying hens were randomly divided into 6 groups with 12 replicates in each group and 3 cages in each group. Each cage had 3 (low density) or 5 (high density). The control group was fed with basic diet, and the experimental group was fed with 250 g / t YOS and 500g / t YOS in the basal diet, respectively. The experiment period was 18 weeks. The results showed that addition of YOS to 1) diet could significantly increase the color uniformity of eggshell (P0.05 路2).) adding YOS to diet increased the height / depth of intestinal villus of laying hens (P0.059), especially in 250gt / t YOS group, which was significantly higher than that in the control group (P0.05 路3). The addition of YOS significantly increased the number of Lactobacillus jejuni and decreased the number of Escherichia coli, especially in 250g / t YOS group. 4) the addition of YOS significantly decreased the serum endotoxin content of laying hens and increased the immune immunity. The content of epidemic globin A was 0.090%, and the concentration of P0. 05% in 250 g / t YOS group was significantly higher than that in the control group. The addition of YOS to diet could improve the intestinal function of laying hens under the condition of high density culture. The comprehensive effect of 250g / t additive was better.
【作者单位】：山东农业大学动物科技学院;河北省辛集市畜牧局;菲利欧-乐斯福动物营养与健康事业部;
【基金】：山东省现代农业产业技术体系家禽创新团队项目(STAIT-13-011-08)
【分类号】：S831.5

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