稀土对猪鸡生产性能影响的研究

张苏琼[1] 张安全[2] 闫洁辰[3]

Study on the Performance Enhancing Effect of Rare Earth Elements |on Fattening Pigs, Broilers and Laying Hens

ZHANG Su-qiong, ZHANG An-quan, YAN Jie-chen

. 2006, (1): 35 -39 .