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Professor Ni is taking good care of the calf

Recently，The major national genetically modified project "Cultivation of new varieties of high-quality and efficient genetically modified beef cattle" chaired by Professor Ni Hemin from the School of Animal Science and Technology of Beijing Agricultural University once again achieved new breakthroughs。2012The first batch of children born in the year containing adipose adiponectin gene(A-FABP)’s somatic cell transgenic cloned cow “Niuniu” successfully bred offspring，Yu2015Year8month28Early morning of the day3:30, successfully gave birth to the second generation "transgenic calf", weight17 kg, female. Deadline9month12日，The calf is half a month old，All physical signs are normal，Good health。This means，The application of somatic cell cloning technology to cultivate new beef cattle breeds of my country’s own brand has taken a more critical step，Achieved three major breakthroughs。First, it is proved that the transgenic cattle obtained through somatic cell transgene cloning technology have normal breeding functions，This shows that cloned cattle can expand their population；The second is to pass the test of calves，Contains adipose adiponectin gene(A-FABP)The genes have multiplied in him，And stable integration，This indicates thatGenes can be passed down from generation to generation；The third is through the measurement of ecological environment indicators such as soil environment indicator organisms earthworms and microorganisms in the soil around the genetically modified cattle pens，No adverse effects of genetically modified cattle on the surrounding environment have been found。This shows that the somatic cell transgenic cloning technology production system can be used for the safe production of transgenic animals。

According to Professor Ni Hemin，This second-generation genetically modified calf was hard-won，His mother "Niuniu" passed by the team3Years of hard work, only then2012Year8month1Born in the Comprehensive Experimental Base of Beijing Agricultural College，Weak at birth，Unable to take the initiative to eat，After careful care by the team，"Niuniu" finally reaches sexual maturity，Can fulfill the task of breeding offspring。2014Year11month2日，The team prepared Qinchuan cattle frozen semen for "Niuniu" provided by the Germplasm Resources Protection Center of the National Animal Husbandry Station，and performed artificial insemination，Complete breeding。experience299days，Successfully gave birth to the second generation of "transgenic calf"，The calf is in good health。The team is currently taking good care of the calf in the cattle farm，Perform artificial feeding，The amount of milk the calf drinks、defecation status、Real-time monitoring of daily weight gain and other indicators，Ensure healthy growth of calves。2012The second one born in 2018 contains the adipose adipocyte protein gene(A-FABP)’s somatic cell transgenic cloned cow “Mengmeng” is also currently pregnant，The second genetically modified calf will be born soon。

2013General Secretary Xi pointed out at the National Rural Work Conference，Be bold in innovative research，Occupy the commanding heights of genetically modified technology。Hosted by Professor Ni Hemin of Beijing Agricultural College"Cultivation of new high-quality and efficient genetically modified beef cattle varieties"Research results are achieved through continuous innovation.2009Year，When Professor Ni Hemin’s team started doing this research，Although there have been reports on genetically modified animal technology abroad。“However, due to the relative confidentiality of various countries in the specific aspects of such technical systems，We don’t really know。”Time interval6, Professor Ni Hemin said deeply:“Six years of research，We all came here by groping。We integrate advanced technological ideas at home and abroad with our existing technologies、Integration、Optimization，Create a technical route with its own characteristics，Achieved current results。”

   According to introduction，Although there are five major scalpers in our country，But so far there is no world-recognized meat variety。A common problem with my country’s current meat varieties is low meat yield and low meat quality，One of the key factors in the quality of beef，is the fat content between muscles。The characteristics of beef consumption are different from those of pork，The leaner the pork, the better，Beef contains a certain amount of fat between the muscles, which is the best，Also known as marbled beef，The taste and nutrition are loved by most beef consumers，Currently mainly imported，Higher price。The scientific research team led by Professor bet365 online sports bettingNi Hemin focuses on solving this problem，That is, through somatic cell transgenic cloning technology，Successfully prepared carrying fatty acid binding protein gene (A-FABP) transgenic cloned cattle,Promote the improvement of Qinchuan cattle breed, one of the five largest cattle in my country、Development and Utilization，To lay the foundation for cultivating my country’s five largest scalpers into world-famous high-quality high-end beef cattle，It also allows Chinese people to eat domestically produced “snowflake beef” as soon as possible。