动物营养学报2019，Vol.31Issue(9)：4070-4079,10.DOI:10.3969／j.issn.1006⁃267x.2019.09.019
不同类型玉米青贮的粗饲料组合对肉牛生长性能、营养物质表观消化率及血清生化指标的影响
Effects of Roughage Combination of Different Types of Corn Silage on Growth Performance, Nutrient Apparent Digestibility and Serum Biochemical Indexes of Beef Cattle
摘要
Abstract
The study was conducted to investigate the effects of roughage combination of different types of corn silage on growth performance, nutrient apparent digestibility and serum biochemical indexes of Simmental crossbred cattle. A total of 180 healthy Simmental crossbred cattle [ (420±40) kg] were randomly divided into 4 groups that were fed different rations: group A ( sweet corn straw silage+peanut seedling) , group B ( corn straw silage+peanut seedling) , group C ( whole silage corn +peanut seedling) and group D ( whole silage corn+peanut seedling+wheat straw) , respectively. The experiment period included a pre?trial period of 15 days and a trial period of 90 days. The results showed as follows: 1) the average daily gain in group C was signifi?cantly higher than that in group B ( P＜0.05) , that in groups A and D was significantly higher than that in group B ( P＜0.05) ; average daily feed intake in group C was higher than that in other groups, but had no sig?nificant difference ( P＞0.05) ; feed／gain in group C was the lowest, and was significantly lower than that in group B (P＜0.05) , bud had no significant difference with groups A and D ( P＞0.05).2) The apparent di?gestibilities of dry matter, neutral detergent fiber, crude protein, ether extract and total energy in group C were significantly higher than those in group B ( P＜0.05). The apparent digestibility of acid detergent fiber in group A was significantly higher than that in group C, but no significant difference ( P＞0.05). 3) The serum globu?lin／albumin in groups B and C was significantly higher than that in group A ( P＜0.05) , and the content of ser?um free fatty acids in groups A and B was significantly higher than that in groups C and D ( P＜0.05). The ac?tivity of serum lactate dehydrogenase in group B was significantly higher than that in groups C and D ( P＜0.05). In conclusion, this experiment shows that feeding whole corn silage can significantly improve the di?gestibility of feed and reduce the feed／gain of beef cattle. Feeding sweet corn stalk silage can improve the di?gestibility of feed than corn straw silage; the feeding effect of wheat straw instead of whole corn silage is worse than that of whole corn silage.[ Chinese Journal of Animal Nutrition, 2019, 31(9) :4070?4079]关键词
肉牛/玉米青贮/生长性能/表观消化率/血清生化指标Key words
beef cattle/corn silage/growth performance/apparent digestibility/serum biochemical indexes分类
农业科技引用本文复制引用
薛宵,牛岩,蔡阿敏,张晓霞,滕战伟,王建钦,秦海东,李鹏飞,高腾云..不同类型玉米青贮的粗饲料组合对肉牛生长性能、营养物质表观消化率及血清生化指标的影响[J].动物营养学报,2019,31(9):4070-4079,10.基金项目
优质肉牛高效安全养殖技术应用与示范(2018YFD0501704) （2018YFD0501704）
河南省种养结合技术集成示范应用推广项目(2017) （2017）
现代奶牛产业技术体系建设专项资金资助( CARS⁃36) （ CARS⁃36）
