ISBN: 9787508266930 - 怎样提高养蛋鸡效益（第二版） (1 Ergebnisse)

paperback. Zustand: New. The paperback. Pub Date: 2012 Pages: 262 in Publisher: Golden Shield Press How to improve the raising hens effective (2) profiling the laying hens farmers understanding the basis of misunderstanding and production problems on how to improve The laying hens benefits comprehensively expounded. The main contents include: Summary of laying hens. epidemic prevention system to provide security for laying hens. how to supply the hens balanced nutrition. laying hens standardized feeding and managemen.…