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huang ti tong zhi liao nai niu fa qing you xiao ji liang de shi yan
Pages: 54-55
Year: Issue:  11
Journal: Agricultural Technology & Equipment

Abstract:  母畜产后的主要特征是泌乳,而泌乳是繁殖过程的延伸.产后泌乳会使卵巢功能受到抑制,引起泌乳性乏情,而产后第一次发情出现的迟早是影响奶牛繁殖率的重要因素之一.
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