A.育成豬 B.后備母豬 C.后備公豬 D.斷奶后過瘦的經(jīng)產(chǎn)母豬 E.基礎(chǔ)母豬
A.1:30~40 B.1:40~60 C.1:60~80 D.1:600~1000 E.1:600~800
A.10 B.25 C.1500 D.40 E.100