ISBN: 9787533538743 - 高效益猪场生产管理技术 蔡尚文 著作 (1 resultados)

paperback. Condición: New. Paperback. Pub Date: 2011 Pages: 196 in Publisher: Fujian Science and Technology Press modern pig traditional family sideline pig have a very clear distinction. Modern pig aggressively pursue economic and commercial value. and the pursuit of efficient. high-quality. low-power. low-pollution production effects. the implementation of large-scale. large groups. the high density of intensive farming methods achieve planned. rhythm. equalization factory production. pay attention to the high-invest. …