List of Articles pregnancy age Open Access Article Abstract Page Full-Text 1 - Evaluation of Heifer Management Criteria for Improved Lactation and Reduced Dystocia: A Systematic Analysis of Body Weight, Average Daily Gain, and Age ح. رفیعی م.ه. خبازان ا. مهنانی ا. نیکخواه 20.1001.1.2251628.2020.10.3.10.9