ISBN: 9787810665315 - 鸭高效饲养与疫病监控 (1 Ergebnisse)

paperback. Zustand: New. Paperback Pages Number: 341 Language: Chinese duck efficient feeding and disease control in the agricultural structure adjustment. the duck has become one of the major industries of the development of animal husbandry. China's duck has been reared by small-scale dispersion in household sideline production style. and gradually to the large-scale and intensive development. With the increase of the scale duck. how to improve the effectiveness of duck has become the utmost concern to breeders. In.…