ISBN: 9787122210944 - 蛋鸡高效养殖关键技术及常见误区纠错 (1 Ergebnisse)

paperback. Zustand: New. Language:Chinese.Pub Date: 2014-10-01 Pages: 359 Publisher: Chemical Industry Press book based on the current actual production of laying hens industry overview from our egg industry. hens and efficient breeding of species selection and breeding techniques and correct common errors wrong. efficient breeding hens feed selection and preparation techniques and correction of common errors. breeding hens and efficient environmental control technology and correction of common errors. pig rearing br.…