Study on the Application of Embryo Transplant in Inducing Twin of beef Cattle
1) Tong Zhenfu 1) Zhou Muqing 1) Wang Dingfa 1) Jin Erguang 2) Shen Guihua2) Huang Baohma 2) Lu Changjun 2) Xu Yijia Wuhan Institute of Animal Scicnce & Veterinary Medicine; Wuhabn; 430065;2)Xinzhon Burean of Animal Husbandry; Wuhan)