作者: O.J. Franco , M. Drost , M.-J. Thatcher , V.M. Shille , W.W. Thatcher
DOI: 10.1016/0093-691X(87)90057-4
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摘要: … palpated per rectum twice between Days 42 and 46 after insemination. Cows in the control group (n = 107) were not palpated until both groups were palpated … (palpation) and could not …