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ISBN 10 : 7511631622ISBN 13 : 9787511631626
Vendeur : liu xing, Nanjing JiangSu, JS, Chine
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paperback. Etat : New. Paperback. Pub Date: 2017-09-01 Pages: 158 Language: Chinese Publisher: China agricultural science and technology publishing house sex cage-free laying hens breeding technology. introduced the free-range breeding status of laying hens. free-range breeding management. common varieties of laying hens. chicks breeding chicken breeding management. adult chicken breeding. disease prevention and control of free-range eggs are common.