日粮精粗比对母羊妊娠前期生产性能、养分表观消化率及血清激素水平的影响Published in:Journal of Henan Agricultural Sciences, 2018, v. 47, n. 5, p. 135, doi. 10.15933/j.cnki.1004-3268.2018.05.025By:靳继鹏;张利平;侯生珍;袁 赞;李永元;茹巧红;贾建磊Publication type:Article