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第17号公告板 - Winter 2003
Miscelleanous- No Category
PLAIN RL, LAWRENCE JD
Swine production.
Vet. Clin. Food Anim., 2003, Volume 19, 319-337
This paper reviews the evolution of swine production in the US in the last decades and confirms the inevitable move towards new production systems and new technology with a decline of the number of pig producers, a shift to large hog operations and a strong trend of producers to sign marketing contracts with packers.
