ISBN: 9787511656810 - 蛋鸡产业提质增效与转型升级发展模式研究 (1 Ergebnisse)

paperback. Zustand: New. Paperback. Pub Date: 2022-05-01 Pages: 144 Language: Chinese Publisher: China Agricultural Science and Technology Press With the development of the laying hen industry. the scale and standardization of laying hen farming have been continuously improved. the industrial structure has become more reasonable. and industry competition Strength is also increasing. The main body of breeding is becoming more and more diversified. and the level of farming technology and mechanization are constantly im.…