Effects of Complex Enzyme Preparation on Calves Feeding
wang li-sheng1; zhu hong-long1; sun chang-chun2; et al( 1. college of animal science and technology; anhui gricultural university; hefei 230036; 2. anhui longhua biotechnology limited company)
Application of Reproductive Immunization on Animal Reproduction
yan ping1; 2(1.gansu agricultural university; lanzhou 730070; 2.lanzhou institute of animal science and veterinary pharmaceutical science of chinese academy of agricultural science; 730050)