早期断奶仔猪的能量、蛋白和赖氨酸需要量研究

STUDIES OF ENERGY, PROTEIN AND LYSINE REQUIREMENTS OF EARLY-WEANED PIGLETS

用72头3周龄断奶仔猪探讨5.5-12公斤仔猪日粮的蛋白质和赖氨酸的适宜水平;用30头猪做消化代谢试验,探讨仔猪对各种营养成分公的消化率。结果表明:赖氨酸和蛋白水平对仔猪日增重有显著的影响,而对氮沉积、赖氨酸消化率及干物质消化率无显著影响。采食含19％粗蛋白、1.08％赖氨酸日粮仔猪的全期日增重较高(272克)。在此增重水平下,每日需1860千卡消化能,100.7克粗蛋白和5.88克赖氨酸。

72 piglets weaned at 3 weeks of age were used to investigate the optimal levels of protein and lysine in the starter. 30 boars were also used for digestibility trials. Results showed that lysine and protein levels had significant effect on the daily gain, while digestibility of lysine and dry matter had no effect. when fed diet containing 19% CP, 1.08% lysine, the average daily gain from 5.5 to 12 kg BW was higher than other groups (272 g) . Expressed on kcal/g basis, the daily requirements of the piglets were 1860 kcal DE, 100.7 g CP and 5.88 g lysine.