复合益生菌和酵母培养物对热应激奶牛生产性能、瘤胃发酵和血清抗应激指标的影响

doi:10.3785/j.issn.1008-9209.2018.11.191

浙江大学学报（农业与生命科学版）

2019, Vol. 45

Issue (5): 611-618 DOI: 10.3785/j.issn.1008-9209.2018.11.191

动物科学与动物医学

复合益生菌和酵母培养物对热应激奶牛生产性能、瘤胃发酵和血清抗应激指标的影响

汤志宏(

),徐宁宁,叶均安(

)

浙江大学动物科学学院，杭州 310058

Effect of compound probiotics and yeast culture on milk production, rumen fermentation and serum anti-stress parameters of heat-stressed dairy cows

Zhihong TANG(

),Ningning XU,Jun’an YE(

)

College of Animal Sciences, Zhejiang University, Hangzhou 310058, China

全文: PDF(849 KB) HTML

摘要：

为探究新型复合益生菌对热应激奶牛生产性能、瘤胃发酵特征和血清抗应激指标的影响，选取45头泌乳后期荷斯坦奶牛，分为3组，其中：对照组饲喂全混合日粮，复合益生菌组和酵母培养物组分别在对照组日粮基础上添加复合益生菌20 g/（d·头）和酵母培养物100 g/（d·头）。结果显示：日粮添加复合益生菌和酵母培养物显著提高了热应激奶牛产奶量（P=0.03），但对乳成分没有影响；且提高了瘤胃液氨态氮和微生物蛋白浓度（P=0.04），但对挥发酸产量没有影响。复合益生菌和酵母培养物显著提高了热应激奶牛粗蛋白和中性洗涤纤维的表观消化率（P＜0.05），且复合益生菌的提升效果优于酵母培养物。此外，复合益生菌和酵母培养物显著提高了热应激奶牛血液中三碘甲腺原氨酸浓度（P＜0.01）。因此，在基础日粮中添加复合益生菌能够缓解热应激对奶牛生产性能的影响，并且效果显著优于酵母培养物。

关键词： 热应激奶牛; 复合益生菌; 酵母培养物; 生产性能; 抗应激能力

Abstract:

This study aimed to evaluate the effect of newly developed compound probiotics on milk production, rumen fermentation characteristics and serum anti-stress parameters of heat-stressed dairy cows. Forty-five late-lactation dairy cows were randomly allocated into three groups, including control group (basal total mixed ration, TMR), compound probiotics (CP) group (20 g/d compound probiotics per cow in TMR) and yeast culture (YC) group (100 g/d yeast culture per cow in TMR). The results indicated that the compound probiotics and yeast culture increased milk yield significantly (P=0.03) with no influence on milk content, and improved ammonia nitrogen and microbial protein concentrations in rumen fluid (P=0.04) with no influence on volatile fatty acid concentration. The compound probiotics and yeast culture enhanced the apparent digestibility of crude protein and neutral detergent fiber (P＜0.05), and a better performance was observed in the compound probiotic groups. The compound probiotics and yeast culture increased serum triiodothyronine (T₃) content significantly (P＜0.01). Thus, the compound probiotics could alleviate the negative effect of heat stress on dairy cows, and perform better than the yeast culture.

Key words: heat-stressed dairy cow compound probiotics yeast culture milk production anti-stress capacity

收稿日期: 2018-11-19 出版日期: 2019-12-05

CLC:

S 816.7

基金资助: 浙江省科技厅团队特派员专项“反刍动物营养与饲料资源开发”

通讯作者: 叶均安 E-mail: 458347721@qq.com;yja@zju.edu.cn

作者简介: 汤志宏（https://orcid.org/0000-0002-7065-3678），E-mail：458347721@qq.com

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引用本文:

汤志宏,徐宁宁,叶均安. 复合益生菌和酵母培养物对热应激奶牛生产性能、瘤胃发酵和血清抗应激指标的影响[J]. 浙江大学学报（农业与生命科学版）, 2019, 45(5): 611-618.

Zhihong TANG,Ningning XU,Jun’an YE. Effect of compound probiotics and yeast culture on milk production, rumen fermentation and serum anti-stress parameters of heat-stressed dairy cows. Journal of Zhejiang University (Agriculture and Life Sciences), 2019, 45(5): 611-618.

链接本文:

http://www.zjujournals.com/agr/CN/10.3785/j.issn.1008-9209.2018.11.191 或 http://www.zjujournals.com/agr/CN/Y2019/V45/I5/611

表1 基础日粮组成及营养水平

图1 温湿度指数及饲喂不同益生菌条件下奶牛产奶量变化曲线

表2 复合益生菌和酵母培养物对热应激奶牛采食量、奶产量和饲料转化率的影响

表3 复合益生菌和酵母培养物对热应激奶牛乳成分含量的影响

表4 复合益生菌和酵母培养物对热应激奶牛表观消化率的影响

表5 复合益生菌和酵母培养物对热应激奶牛瘤胃发酵参数的影响

表6 复合益生菌和酵母培养物对热应激奶牛血清生化指标的影响

表 7 复合益生菌和酵母培养物对热应激奶牛血清中T3、T4和HSP70含量的影响

表 8 复合益生菌和酵母培养物对热应激奶牛养殖经济效益的影响

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