Cattle and sheep breed breeding breakthrough
Experts from Northwest Agriculture and Forestry University have severely constrained two key issues affecting the sustainable and healthy development of cattle and sheep breeding in China, such as the lack of livestock breeds and cow mastitis. After 15 years of painstaking exploration and research, they have finally achieved many major issues. Scientific research achievements: Firstly, a large-scale embryo production technology for improved breeds of cattle and sheep was established. Over 35,000 fine-quality dairy cows and beef cattle embryos have been promoted throughout the country. The second is the establishment of a technique for live egg collection and in vitro fertilization of dairy cows and the identification of the embryos of dairy cows. The simple method optimizes the technique of sexually controlled embryo production for dairy cows; the third is the establishment of a somatic cell genetic resource library for improved breeds of cattle and sheep; and the fourth is the establishment of an efficient somatic cloning technology for cattle and sheep, which produces an annual milk output of over 10,000 kilograms. 513 Holstein cattle; fifth is the application of efficient cloning of somatic cells for the study of anti- mastitis transgenic cattle and sheep. The expert appraisal committee unanimously held that the results of this research have reached international advanced level in the scale and efficiency of the embryo transfer of cattle and sheep and the creation of anti- mastitis transgenic breeding materials, and will accelerate the breeding of China's beef and sheep breeds and raise the breeding capacity and breeding level of cattle and sheep germplasm. Leading role and significant application value.
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