摘要
本试验旨在研究芽孢杆菌(枯草芽孢杆菌和地衣芽孢杆菌)对断奶前荷斯坦犊牛生长性能、营养物质表观消化率、血清指标和腹泻率的影响,以期为应用枯草芽孢杆菌和地衣芽孢杆菌更好地培育健康犊牛提供理论依据。本试验采用完全随机区组设计,选取24头体重为(38.09±1.35)kg的健康初生荷斯坦母犊牛,根据犊牛出生时间分为6个区组,每个区组4头犊牛,分别为对照组(饲喂牛奶+开食料)和芽孢杆菌组(饲喂牛奶+1 g/d的芽孢杆菌+开食料)各2头。犊牛在56日龄进行断奶并结束试验。结果表明:与对照组相比,56日龄时,芽孢杆菌组犊牛的体高有下降的趋势(P=0.06),干物质(P=0.08)和粗蛋白质(P=0.05)表观消化率有升高的趋势,血清免疫球蛋白G含量显著升高(P<0.05),血清总抗氧化能力(P=0.08)和白蛋白含量(P=0.09)有升高的趋势;28~56日龄时,芽孢杆菌组犊牛的粪便异常天数有下降的趋势(P=0.09)。由此可见,饲喂芽孢杆菌对犊牛生长性能无显著影响,但一定程度上提高了断奶前犊牛的免疫水平和抗氧化能力及犊牛对饲粮干物质和粗蛋白质的表观消化率,同时降低了犊牛腹泻天数。
This experiment aimed to investigate the effects of Bacillus(Bacillus subtilis and Bacillus licheniformis)on growth performance,nutrient apparent digestibility,serum indices and diarrhea rate of pre-weaned Holstein calves,to provide a theoretical basis for the application of Bacillus subtilis and Bacillus licheniformis for better breeding of healthy calves.A completely randomized compartmentalized experimental design was used in this experiment,24 newborn Holstein female calves with body wight of(38.09±1.35)kg were divide into 6 blocks,each block contained 4 calves,which contained 2 calves in control group(feeding milk+starter)and Bacillus group(feeding milk+1 g/d Bacillus+starter).Calves were weaned at 56 days of age and the experiment ended.The results showed that compared with the control group,on 56 days of age,the body height of calves of Bacillus group was tended to decrease(P=0.06),the apparent digestibility of dry matter(P=0.08)and crude protein(P=0.05)was tended to increase,the serum immunoglobulin G content was significantly increased(P<0.05),the serum total antioxidant capacity(P=0.08)and albumin content(P=0.09)were tended to increase;during 28 to 56 days of age,the Fecal abnormality days were tended to decrease(P=0.09).In conclusion,feeding Bacillus has no significant effect on growth performance of calves,but increase the immunity level and antioxidant capacity of calves before weaning and the apparent digestibility of dry matter and crude protein of diet for calves to a certain extent,and reduce the diarrhea days of calves.
作者
程传腾
邹郑欣
王一强
吕静仪
王啸林
张永根
刘洋
董从越
辛杭书
CHENG Chuanteng;ZOU Zhengxin;WANG Yiqiang;LYU Jingyi;WANG Xiaolin;ZHANG Yonggen;LIU Yang;DONG Congyue;XIN Hangshu(College of Animal Science and Technology,Northeast Agricultural University,Harbin 150030,China;Beidahuang Wandashan Dairy Co.,Ltd.,Harbin 150001,China;Chr-Hansen(Beijing)Trading Co.,Ltd.,Beijing 100020,China)
出处
《动物营养学报》
CAS
CSCD
北大核心
2024年第9期5805-5816,共12页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
财政部和农业农村部-国家现代农业产业技术体系资助(CARS36)。
作者简介
程传腾(1998—),男,河南濮阳人,硕士研究生,从事反刍动物营养研究。E-mail:cct765774892@163.com;通信作者:辛杭书,教授,博士生导师,E-mail:hangshu.xin@neau.edu.cn。
