China's first independently completed 6 cloned cattle to spend the Spring Festival of the year of the horse safely

Introduction: under the careful care of technical personnel, the 6 cattle, which were completed independently for the first time in China, have spent the Spring Festival of the year of the horse safely and happily, thriving The six cloned cattle were born in January and February in wulidun large animal embryo engineering center, Caoxian County, Shandong Province In the nursing room of cloned cattle, six technicians are divided into three groups, each group is on duty for 8 hours, and they take care of the cloned cattle "baby" 24 hours a day Now, the little cloned cattle are full of spirit, good appetite, body temperature, breathing and other physiological conditions are all normal The only "young man" in the six cloned cattle is a gepwei beef cattle, and the other five "Little Sisters" are not bad and handsome, because they are all cloned from the same high-yield Holstein cow's somatic cells Du Qike, a technician who nursed the cloned cattle, said the six were in good condition In a few days, they will be able to live in the calf room like other calves According to Du Qike, at 5:00 p.m on February 11, cloned cattle "Hall" died of volvulus, which may be caused by strenuous exercise or other postnatal factors according to the analysis; there were three cows with cloned cattle who failed to give birth to calves, at 5:00 p.m on February 10, 99036 cow was on the labor, and the fetus died in the labor process due to pulmonary vascular rupture, at 5:35 p.m on February 11, 9 9035 cow gave birth to a dead fetus with subcutaneous hemorrhage and necrosis of the chest and waist At 2:00 a.m on February 13, 98219 cow gave birth The fetus was born in an abnormal and transverse position and died in the course of labor So far, all the cloned cattle of Caoxian large animal embryo engineering center have been produced, and the reproductive survival rate of the cloned cattle is about 50%.