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奶牛在牧場裡可以活多久？如果在自然環境可以活多久？
Oct 3rd 2013, 09:07

同事提到了奶牛就是不斷的提供乳汁，
年紀到了就拿去當肉牛，
牧場為了提高牛奶產量肯定會讓他們不斷懷孕吧
想起來覺得讓奶牛好辛苦……


請問一隻奶牛從出生到送到屠宰場的生命週期大概是多久？
如果在自然環境下生活的話又可以活多久？


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