饲粮中添加丁酸梭菌对羔羊消化代谢和血清生化指标的影响

Effects of Dietary Clostridium butyricum on Digestion,Metabolism and Serum Biochemical Indexes of Lambs

董莹蕊 ¹郝小燕 ¹张暄梓 ¹张建新¹

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作者信息

1. 山西农业大学动物科学学院,太谷 030801
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摘要

本试验旨在探讨饲粮中添加丁酸梭菌(CB)对羔羊消化代谢和血清生化指标的影响.选取3月龄、平均体重(22.82±1.67)kg的杜泊×小尾寒羊杂交公羔48只,采用单因素试验设计,随机分为4组,每组12个重复,每个重复1只羊.4个组在基础饲粮中分别添加0(对照组)、5× 107(LCB 组)、5 × 108(MCB 组)、5 × 109 CFU/kg(HCB 组)的 CB(活菌数 ≥5× 109 CFU/g).预试期15 d,正试期60 d.正试期结束后,进行消化代谢试验,适应期5 d,取样期5 d.结果表明:1)与对照组相比,LCB、MCB和HCB组的中性洗涤纤维(NDF)表观消化率显著升高(P＜0.05),HCB组的酸性洗涤纤维(ADF)表观消化率显著升高(P＜0.05).2)与对照组相比,MCB和HCB组的消化能显著升高(P＜0.05),HCB组的总能消化率显著升高(P＜0.05).3)与对照组相比,MCB和HCB组的氮表观消化率显著升高(P＜0.05),HCB组的沉积氮显著升高(P＜0.05).4)与对照组相比,MCB和HCB组的血清总胆固醇(TC)含量显著降低(P＜0.05),HCB组的血清低密度脂蛋白(LDL)含量显著降低(P＜0.05).由此可见,饲粮中添加适宜水平的CB能提高羔羊消化代谢,并改善血清中脂质代谢指标.本试验条件下,饲粮中CB的适宜添加水平为5×109 CFU/kg.

Abstract

This experiment was conducted to investigate the effects of dietary Clostridium butyricum(CB)on digestion,metabolism and serum biochemical indexes of lambs.Forty-eight 3-month-old Dolper×small-tail Han crossbred male lambs with average body weight of(22.82±1.67)kg were randomly divided into 4 groups with 12 replicates per group and 1 lamb per replicate.The basal diets of four groups were supplemented with 0(control group),5×107(LCB group),5× 108(MCB group)and 5×109 CFU/kg(HCB group)CB(viable count≥5×109 CFU/g),respectively.The pre-experimental period lasted for 15 days,and experimental period lasted for 60 days.After the end of the formal period,the digestion and metabolism experiment was carried out,the adaptation period was 5 days,and the sampling period was 5 days.The results showed as follows:1)compared with the control group,the neutral detergent fiber(NDF)apparent digestibility of LCB,MCB and HCB groups was significantly increased(P＜0.05),and the acid detergent fiber(ADF)apparent digestibility of HCB group was significantly increased(P＜0.05).2)Compared with the control group,the digestible ener-gy of MCB and HCB groups was significantly increased(P＜0.05),and the digestibility of gross energy of HCB group was significantly increased(P＜0.05).3)Compared with the control group,the nitrogen apparent digestibility of MCB and HCB groups was significantly increased(P＜0.05),and the nitrogen deposition of HCB group was significantly increased(P＜0.05).4)Compared with the control group,the serum total cho-lesterol(TC)content of MCB and HCB groups was significantly decreased(P＜0.05),and the serum low density lipoprotein(LDL)content of HCB group was significantly decreased(P＜0.05).In conclusion,dieta-ry appropriate level of CB can improve digestion,metabolism and serum lipid metabolism indexes of lambs.In this experiment,the dietary appropriate CB supplemental level is 5×109 CFU/kg.[Chinese Journal of Animal Nutrition,2024,36(7):4499-4507]

关键词

丁酸梭菌/羔羊/生长性能/消化代谢/血清生化指标

Key words

Clostridium butyricum/lambs/growth performance/digestion and metabolism/serum biochemi-cal indexes

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基金项目

国家现代农业产业技术体系建设专项(CARS-38)

山西省现代农业产业技术体系建设专项()

山西省1331工程建设项目()

出版年

2024

动物营养学报

中国畜牧兽医学会

动物营养学报

CSTPCDCSCD北大核心

影响因子：1.297

ISSN：1006-267X

参考文献量35

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