壳寡糖对妊娠后期母猪免疫功能和仔猪初生重的影响
Effect of Chitosan Oligosaccharide on Immune Function of Sows in Late Pregnancy and Birth Weight of Piglets
汤峻 1黄皓源 1周乐礼 1李明伟1
作者信息
- 1. 广东海洋大学农学院,广东湛江524000
- 折叠
摘要
[目的]研究饲粮中添加壳寡糖对妊娠后期母猪免疫功能和仔猪初生重的影响,并探讨壳寡糖的适宜添加量.[方法]选择健康的、体重和预产期相近的四胎次“长×大”母猪35头,随机分为5组,每组7个重复,每个重复1头母猪.对照组饲喂基础饲粮(不添加壳寡糖),试验组Ⅰ、Ⅱ、Ⅲ、Ⅳ在基础饲粮中分别添加壳寡糖30、90、270和810 g/t.试验从母猪妊娠85 d开始,至产仔结束.[结果]饲粮中添加壳寡糖对仔猪初生重、母猪血清白介素2(IL-2)浓度和补体C3蛋白浓度均无显著影响(P＞0.05).饲粮添加不同水平的壳寡糖显著提高母猪血清中溶菌酶的浓度(P＜0.05).饲粮中添加不同水平的壳寡糖显著提高母猪血清猪瘟抗体sIgA的浓度(P＜0.05),而试验组Ⅰ和Ⅱ初乳中猪瘟抗体sIgA浓度无显著差异(P＞0.05),试验组Ⅲ和Ⅳ初乳母源猪瘟抗体sIgA浓度显著提高(P＜0.05).[结论]妊娠后期母猪饲粮中壳寡糖的适宜添加量为270 g/t.
Abstract
[Objective] To study the effect of dietary chitosan oligosaccharide on immune function of sows in late pregnancy and birth weight of piglets,and explore the appropriate dosage of chitosan oligosaccharide.[Method] The trial selected 35 fourth parity Landrace-Yorkshire sows of breeding date,pedigree,age,weight etc.in approaching.These sows were divided into five groups randomly,each group had 7 repetitions,every repetition had one sow.The control group was fed basal diet without chitosan oligosaccharide.The four experiment groups(Ⅰ,Ⅱ,Ⅲ,Ⅳ) were fed basal diet adding chitosan oligosaccharide.The quantity was 30,90,270 and 810 g/t in sequence.The test period was from 85 days after pregnancy to farrowing.[Result] Adding dietary chitosan oligosaccharide had no significant effect on birth weight of piglets,sows serum interleukin 2 (IL-2) concentration and the complement protein C3 concentration (P ＞ 0.05).Different levels of dietary chitosan significantly increased the concentration of lysozyme in serum(P ＜ 0.05).Adding different levels of dietary chitosan significantly increased the concentration of serum antibody against CFSV sIgA(P ＜0.05),while the group Ⅰ and Ⅱ had no significant difference on sIgA concentration in colostrum of CFSV antibody (P ＞ 0.05).Test group Ⅲ and Ⅳ significantly improved maternal colostrum CSFV antibody concentration of sIgA (P ＜ 0.05).[Conclusion] The appropriate dosage of chitosan oligosaccharide for sow in late pregnancy is 270 g/t.
关键词
壳寡糖/妊娠后期母猪/免疫功能/初生重Key words
Chitosan oligosaccharide/Sow in late pregnancy/Immunity/Birth weight引用本文复制引用
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据