动物营养学报2017，Vol.29Issue(1)：271-279,9.DOI:10.3969/j.issn.1006-267x.2017.01.031
饲粮中添加卵黄抗体对断奶仔猪生长性能、血清生化指标、肠道形态及肠道微生物菌群的影响
Effects of Dietary Supplementation of Immunoglobulin of Yolk on Growth Performance, Serum Biochemical Parameters, Intestinal Morphology and Microbial Flora of Weaned Piglets
摘要
Abstract
This experiment was conducted to investigate the effects of dietary supplementation of immunoglobu⁃lin of yolk ( IgY) on growth performance, serum biochemical parameters, intestinal morphology and microbial flora of weaned piglets. One hundred and sixty (25±1)⁃day⁃old ‘Duroc×Landrace×Large Yorkshire’ weaned piglets were assigned to 4 groups with 4 replicates per group and 10 pigs per replicate. Weaned piglets in the 4 groups were fed 4 diets as follows:basis diet ( control group) , basis diet+0.4 kg/t colistin ( antibiotic group) , basis diet+1.0 kg/t IgY (IgY group) and basis diet+0.2 kg/t colistin+0.5 kg/t IgY (combine group), re⁃spectively. The experiment lasted for 28 days. The results showed as follows: 1) compared with the control group, the average daily gain of weaned piglets in IgY group was significantly improved ( P<0.05) , the ratio of feed to gain and diarrhea rate of weaned piglets was significantly decreased (P<0.05), and there was no significant effect on average daily feed intake of weaned piglets ( P>0. 05 ) . Compared with the antibiotic group, IgY group had no significant effect on growth performance of weaned piglets (P>0.05), and both showed similar results. 2) Compared with the control group, the contents of total protein and albumin in serum of weaned piglets in IgY group were significantly improved ( P<0.05) . 3) Compared with the control group, the villus height and ratio of villus height to crypt depth ( VH/CD) in ileum of weaned piglets in IgY group were significantly improved ( P<0.05) , and there were no significant effects on villus height, crypt depth and VH/CD in duodenum and jejunum of weaned piglets (P>0.05). 4) Compared with the control group, the number of E.coli in ileum and cecum of weaned piglets in IgY group were significantly decreased (P<0.05), and the numbers of Lactobacilli in ileum and cecum of weaned piglets in IgY group were significantly increased ( P<0.05) . In conclusion, dietary supplementation of IgY can improve the growth performance of weaned pig⁃lets, enhance the immunity, improve gut health levels, and promote the growth of beneficial bacteria. It has the same effect of the use of antibiotics and is the most promising alternatives to antibiotics.关键词
卵黄抗体/断奶仔猪/抗生素/生长性能/血清生化指标/肠道形态/肠道微生物Key words
immunoglobulin of yolk/weaned piglets/antibiotic/growth performance/serum biochemical pa-rameters/intestinal morphology/intestinal microbial分类
农业科技引用本文复制引用
张文飞,刘苹苹,管武太,陈芳,邓跃林..饲粮中添加卵黄抗体对断奶仔猪生长性能、血清生化指标、肠道形态及肠道微生物菌群的影响[J].动物营养学报,2017,29(1):271-279,9.基金项目
广东省生猪产业技术体系岗位专家研究专项 （）
