摘要
犊牛开食料是以玉米高梁等谷物类为主,适量加入高能量高蛋白质饲料和促生长剂等组成并对某些关键性原料进行特殊加工处理的植物性固体饲料。经营养成份分析,开食料含粗蛋白质为20.52%,含可消化总养分为76%以上。经36~41d 龄消化试验结果,试验组对日粮各种养分的消化率都接近80%或80%以上,其中粗纤维消化率为53.74%。经85~90d 龄消化试验结果,试验组对各种养分的消化率均高于对照组,除无氮浸出物外,其它养分的消化率均显著高于对照组(P<0.05),特别是对粗纤维的消化率高达63.20%。试验组断奶时共消耗96kg 鲜奶。对照组则消耗416kg 鲜奶。在43~91d 龄期间日粮干物质摄取量对照组为92.47kg,试验组为125.59kg,组间差异极显著(P<0.01)。
Calf—starter was a vegetativeiy,solid feed.It was mainly made fromcorn and sorghum,with some high—energy and high—protein ingredientsand some growth promotive substances.Some of the main raw materialswere treated with special procedures,the calf—starter contains 20.52% ofcrude protein and 76% of digestible nutrients.Experiments with 36~41 daysold calfes showed that the digestibiey of experiment group for all kinds ofnutrients was about 80%.Digestibility for crude fiber was 53.74%.Experiments with 85~90 day old calves showed that the digestibility of experiment group for all kinds of nutients was higher than control group[p<0.05],except for nitrogen—free estract,The digestibilitg for crude fiberwas 63.20%,The amouts of milk consumed were 96kg and 416kg for theexperiment group and control group,respectively,when weaned.Totaldrymatter intake of the 43~91 day old calves was 25.59kg in experimentgroup and 92.47kg in control group,the difference was significant.[p<0.01].
基金
内蒙古科委科技攻关项目
关键词
适口性
消化率
营养
饲料
Calf—starter
Palatability
Digestibility
Nutrient efficiency