Isbn: 9787564324438 - 养猪生产实训教程 (1 risultati)

paperback. Condizione: New. Language:Chinese.Paperback. Pub Date: 2013-8-1 Pages: 75 Publisher: Southwest Jiaotong University Press' pig production Training Course is a school-enterprise cooperation to develop teaching materials. professional training practice is pig guide books. Content knowledge and skills related to large-scale pig farms in various technical positions are necessary. mainly on pig breeding techniques to identify and pigs. semen technology. breeding sows and timely identification technology estrus. pre.…