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Analysis of B-ultrasound Luteal Variation Related Indicators of Delayed Ovulation Dairy Cows after Estrus at Different Stages
LIU Xian-xia, WANG Han-kui, WANG Shu-jie, WANG Hai-bin, GU Xin-li
. 2016, (
4
): 991 -998 . DOI: 10.16431/j.cnki.1671-7236.2016.04.021