Energy and protein requirements for maintenance of Hu sheep during pregnancy
ZHANG Hao, SUN Ling-wei, WANG Zi-yu, MA Tie-wei, DENG Ming-tian, WANG Feng, ZHANG Yan-li
Journal of Integrative Agriculture . 2018, (01): 173 -183 .  DOI: 10.1016/S2095-3119(17)61691-5