作者: T. Wuliji , A. Litherland , A.L. Goetsch , T. Sahlu , R. Puchala
DOI: 10.1016/S0921-4488(03)00055-5
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摘要: … Pooled data for females in estrus, does pregnant, does kidding relative to ones … does kidding relative to ones determined as pregnant, kidding rate and weaning rate from spring kidding (…