Cattle can give birth to cows! The cow can also choose to only have a mother! This may sound strange, but it is a true fact. A few days ago, the reporter went to Tianfeng Bioengineering Co., Ltd. of Daqing City and saw the process of technical personnel's gender sorting of livestock through biotechnology. The market price of a female cow is often tens of times more expensive than the bull. The reason is simple, because cows can produce milk and create high economic benefits. “If you want to be a public employee and you want to be a mother, you have to be very good!†For a long time, scientists from all over the world have made tremendous efforts to make this seemingly simple idea. In Tianfeng Animal Breeding Sex Control Breeding Base in Daqing City, scientists have finally tested the patented technology of animal sex control in China after repeated trials. Only the United States, Britain and Germany have mastered the technology in the world. The core of gender control of livestock is the use of high-tech biotechnology, as well as optical and electrical principles, to sort the bull's sperm so that researchers can know the gender of these super miniature “baby cows†when the cows are fertilized, and They are separated according to the different physical and chemical characteristics of the X and Y sperm. On the day of the interview at the laboratory of Tianfeng Bioengineering Co., Ltd., we happened to encounter staff working on sperm sorting. Through a series of operations, different characteristics of X sperm and Y sperm in volume, density, charge, motility, DNA content, specific antigen, etc. are presented on the computer screen. Based on these data, researchers can select the sperm that meets the requirements. It is understood that the accuracy of this technology has reached 90% to 95%. With its application, the cattle owners can realize the desire to “produce the public and have the motherâ€, thereby greatly reducing the breeding of dairy cows. cost. The researcher told reporters that it is now necessary to import more than 300 US dollars worth of high-quality embryos with an annual output of 12 tons or more, and it is still not a sexually controlled embryo. If you import a high-quality cow more than 15 months old, you need 50,000 yuan. Now, as long as researchers buy one of these imported cows, they can provide cattle owners with a large number of high-quality embryos. Using this technology, those cattle and low-yielding dairy cows can also exert “excess heat†and use the “bovine†method of abdominal breeding to transplant high-quality embryos into these cows, thereby breeding excellent dairy cows. At present, this project has already entered the trial production stage. In the next step, researchers will also study techniques for in vitro maturation and in vitro fertilization of oocytes. After the success, the breeding speed of good varieties will be more than 10 times higher than now.
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