摘要
研究玉米秸秆经纤维素分解酶(纤维素酶和木聚糖酶)处理后的化学成分变化以及对肉牛生产性能和经济效益的影响。选用12月龄左右的西门塔尔牛36头,对照组饲喂基础日粮(混合精料+玉米秸秆,精粗比45∶55),试验组分别以0.5%、1.0%和1.5%的纤维素分解酶处理玉米秸秆替代基础饲粮中的玉米秸秆进行为期70d的试验。结果表明:采用纤维素分解酶处理玉米秸秆后化学成分发生变化,粗蛋白质含量增加显著,中性洗涤纤维和酸性洗涤纤维降低显著,1.5%的纤维素分解酶处理组中性洗涤纤维和酸性洗涤纤维显著低于1.0%的纤维素分解酶处理组。1.0%、1.5%的纤维素分解酶处理组西门塔尔牛干物质采食量、平均日增重和经济效益提高显著(P<0.05)。适宜的纤维素分解酶添加水平为1.0%。
The objective was to evaluate the effects of corn stover fermented by cellulolytic enzyme on nutrition of corn stover,production performance of beef cattles and economic benefit.Thirty-six Simmenta beef cattles（12-month-old） were randomly divided into 4 groups.The control group was fed the basal diet（mixed concentrate and corn stover,concentrate to roughage as 45 to 55）.Treatments lasted for 70 days were fed corn stover fermented by cellulolytic enzyme at 0.5%,1.0% and 1.5%,respectively.The results showed that chemical composition of corn stover changed with the addition of cellulolytic enzymes.The crude protein content increased significantly,neutral detergent fiber and acid detergent fiber decreased significantly.neutral detergent fiber and acid detergent fiber of 1.5% cellulolytic enzyme treatment were significantly lower than that of 1% cellulolytic enzyme treatment.The dry matter intake,average daily gain and economic benefit of 1.0%,1.5% cellulolytic enzyme treatment increased significantly（P＆lt;0.05）.The cellulolytic enzyme addition level as 1% was good.
出处
《粮食与饲料工业》
CAS
北大核心
2013年第8期47-50,共4页
Cereal & Feed Industry
基金
山西省科技厅攻关项目(20120311021-2)
山西雁门关畜牧经济区科技推广项目(201204)资助
