Isbn: 9787122109255 - layers high(chinese edition) (1 risultati)

paperback. Condizione: New. Paperback. Pub Date: 2011 Pages: 213 Language: Chinese in Publisher: Chemical Industry Press hens efficient production of key technologies supporting a total of 10 chapters. variety selection. nutrition and diets of laying hens with the brood period. the incubation period and egg-laying period of feeding and management. feeding and management of the eggs with chicken. chicken disease prevention and control. layer farm design and environmental control and layer farm business management technol.…