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当前位置: 首页 > 文章 > 木聚糖酶和枯草芽孢杆菌对奶公牛瘤胃发酵、微生物酶活性和数量的影响 饲料工业 2022,43 (1) 8-12
Position: Home > Articles > Effects of Xylanase and Bacillus subtilis Supplementation on Ruminal Fermentation, Microbial Enzyme Activity and Population in Dairy Bulls Feed Industry 2022,43 (1) 8-12

木聚糖酶和枯草芽孢杆菌对奶公牛瘤胃发酵、微生物酶活性和数量的影响

作  者：
韩林;王聪;刘强;吴浩淼;郭刚;霍文婕;张静;张婵娟
单  位：
山西大禹生物工程股份有限公司;山西农业大学动物科技学院
关键词：
木聚糖酶;枯草芽孢杆菌;瘤胃发酵;酶活性;微生物;奶公牛
摘  要：
为研究枯草芽孢杆菌(XYL)和木聚糖酶(BS)对瘤胃发酵、微生物酶活性和数量的影响。将20头体重为(540±6.2)kg荷斯坦公牛按2×2因子设计随机分为4组:对照组(基础日粮)、XYL+组(基础日粮+2 g/d XYL)、BS+组(基础日粮+5 g/d BS)与XYL+BS组(基础日粮+2 g/d XYL+5 g/d BS)。结果显示:添加XYL,瘤胃pH不变;总挥发性脂肪酸浓度、乙酸摩尔比、乙酸/丙酸值增加(P<0.05);氨态氮浓度降低(P<0.05);纤维分解酶活性、总细菌和主要纤维分解菌数量提高(P<0.05)。添加BS,瘤胃p H不变;总挥发性脂肪酸浓度和丙酸摩尔比增加(P<0.05);氨态氮浓度、纤维分解酶活性与菌数量不受影响。对瘤胃α-淀粉酶和蛋白酶活性以及嗜淀粉瘤胃杆菌与原虫数量,XYL与BS互作效应显著(P<0.05)。综上可知,XYL和BS均能改善瘤胃发酵,且二者共同添加对淀粉和蛋白分解菌的生长与酶活性的提高更有效。
译  名：
Effects of Xylanase and Bacillus subtilis Supplementation on Ruminal Fermentation, Microbial Enzyme Activity and Population in Dairy Bulls
作  者：
HAN Lin;WANG Cong;LIU Qiang;WU Haomiao;GUO Gang;HUO Wenjie;ZHANG Jing;ZHANG Chanjuan;College of Animal Science and Veterinary Medicine, Shanxi Agricultural University;Shanxi Dayu Biological Engineering Co., Ltd.;
关键词：
xylanase;;Bacillus subtilis;;ruminal fermentation;;enzyme activity;;microbes;;dairy bull
摘  要：
This study evaluated the effects of xylanase(XYL) and Bacillus subtilis(BS) supplementation on ruminal fermentation, microbial enzyme activity and population in dairy bulls. Based on a two factor design twenty Holstein dairy bulls with(540 ± 6.2)kg of body weight were randomly assigned into four groups: control(basal diet), XYL+(basal diet + XYL), BS+(basal diet + BS) and XYL+BS(basal diet + XYL + BS) groups. Dietary XYL supplementation did not affect ruminal pH, but increased(P<0.05) total volatile fatty acids concentration, acetate molar proportion and acetate to propionate ratio,and decreased(P<0.05) ammonia N concentration. The activity of ruminal cellulolytic enzyme, the population of total bacteria and the dominant cellulolytic bacteria increased(P<0.05) with XYL addition. Supplementation of BS did not affect ruminal pH, but increased(P<0.05) total volatile fatty acids concentration and propionate molar proportion. Ruminal cellulolytic enzyme activity and dominant cellulolytic bacteria population were unchanged with BS addition. Significant effect of(P<0.05) XYL × BS interaction was observed on the activity of α-amylase and protease as well as the population of Ruminobacter amylophilus. The data indicated that: both XYL and BS could improve ruminal fermentation, and the combinated addition of XYL and BS was more efficient in stimulating the growth of bacteria responsible for starch and protein degradation in dairy bulls.

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