饲料研究2024，Vol.47Issue(7)：18-22,5.DOI:10.13557/j.cnki.issn1002-2813.2024.07.004
菌酶添加剂对辽宁黑山牛生长性能、养分表观消化率、瘤胃发酵参数及经济效益的影响
Effects of bacterial enzyme additives on growth performance,nutrient apparent digestibility,rumen fermentation parameters,and economic benefits of Liaoning Heishan cattle
摘要
Abstract
The purpose of this experiment was to study the effects of bacterial enzyme additives on the growth performance,nutrient apparent digestibility,rumen fermentation parameters,and economic benefits of Liaoning Heishan cattle.Thirty-six Liaoning Heishan cattle with an average weight of about 273 kg were randomly divided into three groups with four replicates in each group and three cattle in each replicate.The control group was fed with basal diet,the experimental group A was fed with basal diet+5 g/(head·d)of bacterial enzyme additive,and the experimental group B was fed with basal diet+10 g/(head·d)of bacterial enzyme additive.The pre-test period was seven days,and the formal test period was 60 days.The results showed that compared with the control group,the final weight and average daily gain of the experimental group B increased significantly(P＜0.05),the feed-to-weight ratio decreased significantly(P＜0.05),and the incidence rate decreased by 63.04％.The incidence rate of the experimental group A decreased by 27.52％(P＞0.05).The apparent digestibility of crude protein,acid detergent fiber,and neutral detergent fiber in the experimental group B was significantly higher than that in control group(P＜0.05).Ammonia nitrogen and the ratio of acetic acid to propionic acid in rumen fluid of the experimental group B were significantly lower than those of the control group(P＜0.05),while the concentrations of propionic acid and microbial protein were significantly higher than those of the control group(P＜0.05).Compared with the control group,the daily net profit of each cow in the experimental group A increased by 1.10 yuan,and the experimental group B increased by 7.27 yuan.The study indicates that adding 10 g/(head·d)microbial enzyme additive to the basal diet can effectively improve the growth performance,nutrient apparent digestibility,improve the rumen fermentation function,reduce the occurrence of diseases,and improve the economic benefits of Liaoning Heishan cattle.关键词
菌酶添加剂/辽宁黑山牛/生长性能/养分表观消化率/经济效益Key words
bacterial enzyme additive/Liaoning Heishan cattle/growth performance/nutrient apparent digestibility/economic benefits分类
农业科技引用本文复制引用
李秀丽..菌酶添加剂对辽宁黑山牛生长性能、养分表观消化率、瘤胃发酵参数及经济效益的影响[J].饲料研究,2024,47(7):18-22,5.基金项目
山东省牛产业技术体系(项目编号:SDAIT-09-07) （项目编号:SDAIT-09-07）
山东省高等学校畜禽良种繁育新技术研发中心(项目编号:2022) （项目编号:2022）
