Embryo Transfer of Cattle and Observation of Adaptability of Its Progenies in Alpine-cold Area

In 2001～2004,it was used to conduct the test of embryo transfer that 172 frozen embryos of cattle of different breeds were introduced into Huzhu county from the centre of embryo engineering in Xinjiang Hutubi Breeding Cattle Farm.The results showed that the average conception rate was 41.86%,the calving survival rate was 91.67%;the average birth weight,six-month-aged weight and yearling weight of calves of Holstein,Angus,Simmental and Limousin breeds which were calved by the cow of mnbryo transfer were significantly higher than those of contemporary native yellow cattle(P0.01);the average yearling daily gain was significantly higher than that of contemporary native yellow cattle (P0.01);the body parameters of the progeny-cattle calving by cow with embryo transfer were higher than that of contemporary native yellow cattle.Those progenies had fine growth and development and good actptability to alpine-cold area of Qinghai province.