地衣芽孢杆菌和丁酸梭菌对育肥羔羊生长、养分消化及血清生化指标的影响

doi:10.16431/j.cnki.1671-7236.2024.08.012

摘要/Abstract

摘要： 【目的】高精料育肥引发的肉羊消化功能紊乱已引起了人们的高度重视,饲喂益生菌有助于羊的消化吸收。本研究将两种益生菌(地衣芽孢杆菌和丁酸梭菌)在饲粮中单独或联合添加,探究其对育肥羔羊生长性能、养分表观消化率及血清生化指标的影响。【方法】选择125只3~4月龄育肥后期湖羊公羔(30.89 kg±0.38 kg),随机分为5组:对照组、抗生素组(20 mg/kg莫能菌素)和3个益生菌组(4×10¹⁰CFU/kg地衣芽孢杆菌、2×10⁸CFU/kg丁酸梭菌和两种菌同剂量联合组),试验期60 d,测定试验前期(1~30 d)和后期(31~60 d)羔羊的生长性能、养分表观消化率,以及试验第1、30和60天羔羊的血清生化指标。【结果】与对照组相比,饲粮中单独或联合添加地衣芽孢杆菌和丁酸梭菌对羔羊平均日采食量均无显著影响(P＞0.05),但两种菌联合添加显著提高了羔羊整个试验期的日增重(P＜0.05),3个加菌组羔羊料重比(F/G)均显著降低(P＜0.05),且试验后期联合添加组的F/G显著低于两个单菌组(P＜0.05);两菌联合添加显著提高了羔羊试验前期和后期的干物质表观消化率(P＜0.05),3个加菌组前期的酸性洗涤纤维消化率均显著提高(P＜0.05)。另外,试验后期3个加菌组羔羊的血清葡萄糖含量较对照组提高了16.97%~28.18%,均差异显著(P＜0.05)。【结论】饲粮中单独添加或联合添加地衣芽孢杆菌、丁酸梭菌均能提高羔羊的生长性能,改善消化性能,两菌联合添加效果较佳。

关键词: 地衣芽孢杆菌; 丁酸梭菌; 育肥羔羊; 生长性能; 养分表观消化率

Abstract: 【Objective】 Digestive dysfunction caused by high-concentration feeding in fattening lambs has been paid more attention in recent years.The objective of present study was to investigate the effects of two probiotics (Bacillus licheniformis and Clostridium butyricum) added alone or in combination in diet on growth performance,nutrient apparent digestibility and serum biochemical indexes of fattening lambs.【Method】 One hundred and twenty-five 3-4 months fattening lambs with body weight at 30.89 kg±0.38 kg were randomly allocated into five groups including control group,antibiotic group (20 mg/kg monensin) and three probiotic groups (Bacillus licheniformis 4×10¹⁰ CFU/kg,Clostridium butyricum 2×10⁸ CFU/kg,and Bacillus licheniformis 4×10¹⁰CFU/kg+Clostridium butyricum 2×10⁸ CFU/kg).The experiment lasted for 60 days including the early stage (1-30 d) and late stage (31-60 d).Growth performance and nutrient apparent digestibility in lambs were measured for two experimental stages.Serum biochemical parameters in lambs were measured on 1 st,30th and 60th day of the experiment.【Result】 There was no difference in average daily feed intake among all groups (P＞0.05).However,throughout the entire experimental period,compared with the control group the combination of two probiotics significantly increased average daily gain (P＜0.05), and feed/gain ratio (F/G) of three probiotic groups were all decreased. Moreover,in the late period,the F/G in the combined group was significantly lower than that in other two groups (P＜0.05).Additionally,the combination group exhibited a significant increase in apparent digestibility of dry matter during both early and late periods (P＜0.05).In the early period,all three probiotic groups showed a significant improvement in acid detergent fiber digestibility compared with control group (P＜0.05).Furthermore,serum glucose concentrations in three treatment groups increased by 16.97% to 28.18% during the late period when compared with control group (P＜0.05).【Conclusion】 The dietary supplementation of Bacillus licheniformis and Clostridium butyricum alone or in combination could improve growth and digestive performance of lambs,and the effect of combined supplement was optimal.

Key words: Bacillus licheniformis; Clostridium butyricum; fattening lambs; growth performance; nutrient apparent digestibility

中图分类号:

S816.7

赵心念, 李伯森, 苏东遥, 杨学颖, 张新竹, 纪海祥, 张会文, 高玉红. 地衣芽孢杆菌和丁酸梭菌对育肥羔羊生长、养分消化及血清生化指标的影响[J]. 中国畜牧兽医, 2024, 51(8): 3337-3344.

ZHAO Xinnian, LI Bosen, SU Dongyao, YANG Xueying, ZHANG Xinzhu, JI Haixiang, ZHANG Huiwen, GAO Yuhong. Effects of Dietary Bacillus licheniformis and Clostridium butyricum on Growth,Digestion and Serum Biochemical Indexes in Fattening Lambs[J]. China Animal Husbandry and Veterinary Medicine, 2024, 51(8): 3337-3344.

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