夏季利用轻钢结构羊舍和饲喂玉米青贮全混合日粮育肥断奶羔羊的效果

Fattening Effect of Weaned Lambs Fed with Total Mixed Diet Containing Whole-Plant Corn Silage in Light-Steel Structure Barn in Summer

高温季节利用50％、60％、70％的全株玉米青贮全混合日粮饲养断奶羔羊，平均日增重分别达到274、264、271 g，经济效益以70％青贮组最好，可增收51．4～57．8元／只。经测定，轻钢结构羊舍对温度、湿度具有明显的调控作用，同时舍内CO2、NH3、H2 S等环境参数均低于国家NY／T388－1999《畜禽场环境质量标准》，说明此类型羊舍通风良好，达到了肉羊健康养殖的要求。

The total mixed diets containing 50%, 60%or 70%of whole-plant corn silage were used to feed weaned lambs in high temperature season.Under this condition, the average daily gain of lambs reached to 274, 264 and 271 g respectively.The group with 70% corn silage had the best economic benefit, which could increase by 51.4~57.8 yuan per sheep.The light-steel structure barn had obvious regulating effects on its inner temperature and humidity, and the inner concentration of CO2 , NH3 , H2 S were all lower than the limits from the NY/T388 -1999 LIVESTOCK AND POULTRY FIELD ENVIRONMENT QUALITY STAN-DARDS.It suggested that this type barn had good ventilation and could meet the requirement of mutton sheep healthy breeding.