酵母壁多糖对断奶仔猪肠道挥发性脂肪酸和微生物菌群的影响

发布时间：2018-11-12 15:21

【摘要】：本研究旨在探讨饲粮中添加酵母壁多糖对断奶仔猪肠道挥发性脂肪酸和微生物菌群的影响。试验采用单因素试验设计方法,选取180头遗传背景一致、健康状况良好、胎次和体重接近的21日龄断奶仔猪,随机分为4个组,每组5个重复,每个重复9头猪。4个组试验猪分别饲喂对照饲粮(未添加酵母壁多糖)、0.15%酵母壁多糖饲粮、0.30%酵母壁多糖饲粮和0.45%酵母壁多糖饲粮。试验期21 d。结果表明:1)与对照组相比,饲粮中添加0.15%、0.30%和0.45%酵母壁多糖显著提高了仔猪结肠乙酸的含量(P0.05);其中,0.30%和0.45%酵母壁多糖还显著提高了结肠丙酸、丁酸以及总挥发性脂肪酸的含量(P0.05),且二者之间差异不显著(P0.05)。2)与对照组相比,饲粮中添加0.15%、0.30%和0.45%酵母壁多糖显著降低了盲肠沙门氏菌和大肠杆菌数量(P0.05),且0.30%和0.45%酵母壁多糖组之间差异不显著(P0.05)。由此可知,酵母壁多糖可提高仔猪肠道挥发性脂肪酸含量,并改善肠道微生物菌群结构,根据回归方程预测,酵母壁多糖在仔猪饲粮中的适宜添加水平为0.31%~0.40%。
[Abstract]:The purpose of this study was to investigate the effects of yeast wall polysaccharides on intestinal volatile fatty acids (VFA) and microbial flora in weaned piglets. 180 weaned piglets with the same genetic background, good health and close birth order and body weight were selected and randomly divided into 4 groups, 5 replicates in each group. Four groups of pigs were fed with control diet (without yeast wall polysaccharide), 0.15% yeast wall polysaccharide diet, 0.30% yeast wall polysaccharide diet and 0.45% yeast wall polysaccharide diet. The experimental period was 21 days. The results showed that: 1) addition of 0.15% and 0.45% yeast polysaccharide significantly increased the content of acetic acid in colon of piglets compared with the control group (P0.05). Among them, 0.30% and 0.45% yeast wall polysaccharides also significantly increased the contents of propionic acid, butyric acid and total volatile fatty acids (P0.05), and there was no significant difference between them (P0.05). The amount of Salmonella cecum and Escherichia coli was significantly decreased by adding 0.15% and 0.45% yeast wall polysaccharides to diet (P0.05), and there was no significant difference between 0.30% and 0.45% yeast wall polysaccharides (P0.05). It can be concluded that yeast wall polysaccharides can increase the content of volatile fatty acids in intestine and improve the structure of intestinal microbial flora in piglets. According to the regression equation, the optimum addition level of yeast wall polysaccharides in piglets diet is 0.31 and 0.40.
【作者单位】：江西农业大学江西省动物营养重点实验室江西省营养饲料开发工程中心;江西中医药大学;
【基金】：江西省重大科技专项(20143ACF60001) 江西省生猪产业技术体系(JXARS-03-营养与饲料岗)
【分类号】：S828.5

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