试验旨在研究不同比例的益生菌发酵饲料对哺乳羔羊生长性能、血常规及免疫力的影响.试验选择20日龄健康的哺乳羔羊60只,随机分为4组,每组3个重复,每个重复5只羔羊.预试期7d,正式试验期42 d.对照组羔羊饲喂基础颗粒饲粮,试验组羔羊分别饲喂含有5.0％、7.5％和10.0％的益生菌发酵饲料的颗粒饲粮.结果显示,发酵饲料可以显著提高羔羊的末重和平均日增重(P＜0.05),显著降低腹泻率(P＜0.05),但对羔羊的平均日采食量未产生显著影响(p＞0.05).饲喂7.5％和10％的发酵饲料显著增加了羔羊血红蛋白浓度和红细胞总数(P＜0.05),饲喂5.0％、7.5％、10.0％的发酵饲料显著增加了羔羊血红蛋白含量(P＜0.05),饲喂7.5％发酵饲料显著降低了羔羊的白细胞总数(P＜0.05).饲喂5.0％、7.5％、10.0％的发酵饲料显著增加羔羊血清中免疫球蛋白G水平(P＜0.05).饲喂7.5％和10.0％的发酵饲料显著降低了羔羊血清中白细胞介素-6和肿瘤坏死因子-α水平(P＜0.05),显著增加干扰素-γ水平(P＜0.05).发酵饲料显著增加了羔羊血清中白细胞介素-10水平(P＜0.05).研究表明,用发酵饲料饲喂羔羊可以促进羔羊生长,降低腹泻率,增强机体免疫力,改善部分血常规参数,且以7.5％的添加比例较为适宜.
The purpose of the experiment was to study the effects of different proportions of probiotic fermented feed on the growth performance,blood routine,and immunity of lactating lambs.Sixty healthy suckling lambs aged 20 days were randomly divided into four groups,with three replicates in each group and five lambs in each replicate.The pre-test period was seven days,and the formal test period was 42 days.Lambs in the control group were fed with basal pellet diets,while lambs in the experimental groups were fed with pellet diets containing 5.0％,7.5％,and 10.0％probiotic fermented feed,respectively.The results showed that fermented feed significantly increased the final weight and average daily gain of lambs(P＜0.05),and significantly reduced the diarrhea rate(P＜0.05).However,it had no significant effect on the average daily feed intake of lambs(P＞0.05).Feeding 7.5％and 10.0％fermented feed significantly increased the hemoglobin concentration and total erythrocyte count of lambs(P＜0.05),feeding 5.0％,7.5％,and 10.0％fermented feed significantly increased the hemoglobin content of lambs(P＜0.05),and feeding 7.5％fermented feed significantly reduced the total leukocyte count of lambs(P＜0.05).5.0％,7.5％,and 10.0％fermented feed could increase the level of IgG in serum of lambs(P＜0.05).Feeding 7.5％and 10.0％fermented diet to lambs could decrease serum IL-6 and TNF-α levels of lambs(P＜0.05),and increase IFN-γ levels(P＜0.05).Fermented feed significantly increased the level of serum IL-10 of lambs(P＜0.05).The study indicates that feeding fermented feed to lambs can promote growth,reduce diarrhea rate,enhance immunity,and improve some blood routine parameters,and 7.5％of fermented feed is more suitable.
杨森;肖普辉
汉中市动物疫病预防控制中心,陕西汉中 723000||陕西省畜牧技术推广总站,陕西西安 710016
畜牧业
益生菌发酵饲料;羔羊;血常规;免疫力;生长性能
probiotic fermented feed;lambs;blood routine;immunity;growth performance
《饲料研究》 2024 (009)
37-41 / 5
10.13557/j.cnki.issn1002-2813.2024.09.007
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