饲料研究2026，Vol.49Issue(6)：33-37,5.DOI:10.13557/j.cnki.issn1002-2813.2026.06.006
木薯青贮对肉牛生长性能、营养物质表观消化率及经济效益的影响
Effects of cassava silage on growth performance,nutrient apparent digestibility,and economic benefits of beef cattle
摘要
Abstract
This experiment aimed to investigate the effects of replacing whole-plant corn silage with cassava silage on the growth performance,nutrient apparent digestibility,and economic benefits of beef cattle.A total of 64 healthy Simmental crossbred beef cattle with similar body condition were selected and randomly divided into four groups with four replicates per group and four cattle per replicate.The control group(group CK)was fed a basal diet,while the experimental groups were fed diets in which whole-plant corn silage was replaced with cassava silage at 25%(cassava silage group 1),50%(cassava silage group 2),and 100%(cassava silage group 3),respectively.The pre-test period was seven days,and the formal test period was 60 days.The results showed that compared with the group CK,the average daily gain in cassava silage group 2 was significantly increased by 12.50%(P<0.05),and the feed to gain ratio was significantly decreased by 9.83%(P<0.05).The apparent digestibility of neutral detergent fiber and crude protein in cassava silage group 2 were significantly increased by 10.06%and 14.06%,respectively(P<0.05).The apparent digestibility of acid detergent fiber in cassava silage group 1 and cassava silage group 2 was significantly increased by 4.97%and 10.69%,respectively(P<0.05).In cassava silage group 2,the ammonia nitrogen and butyric acid concentrations in rumen fluid were significantly decreased(P<0.05),while the microbial protein content was significantly increased(P<0.05).The rumen fluid pH value in cassava silage group 2 and cassava silage group 3 was significantly decreased(P<0.05).The breeding benefits of beef cattle in cassava silage groups 1,2,and 3 were increased by 13.12%,53.99%,and 39.88%,respectively,with the highest value in cassava silage group 2.The study shows that replacing whole-plant corn silage with cassava silage in beef cattle breeding can effectively improve growth performance,rumen fermentation parameters,nutrient apparent digestibility,and breeding economic benefits,with the optimal replacement ratio being 50%.关键词
木薯青贮/全株玉米青贮/肉牛/营养物质表观消化率/生长性能/经济效益Key words
cassava silage/whole-plant corn silage/beef cattle/nutrient apparent digestibility/growth performance/economic benefits分类
农业科技引用本文复制引用
朱琳,吴荣,王铁军..木薯青贮对肉牛生长性能、营养物质表观消化率及经济效益的影响[J].饲料研究,2026,49(6):33-37,5.基金项目
河南省科技攻关项目(项目编号:242102321051) （项目编号:242102321051）
