Australian invention of livestock sex control (9.6)
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Last Update: 2003-03-12
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Source: Internet
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Author: User
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Australian experts have invented a new technology that animal eggs can recognize the sex of fertilized eggs and identify their quality within one week after in vitro fertilization The results can be known within three hours This technology can be used to control the sex of unborn livestock freely, which is of great significance for the adjustment of the sex ratio of livestock population, the cultivation of excellent breeds and the reduction of feeding cost In the past, the method of testing placental villi was used to identify the sex of fertilized eggs, but it can only be carried out in weeks and months after fertilization, which takes several times as long as the new technology The new technology is to collect 4-10 cells from in vitro fertilized eggs, copy hundreds of millions of DNA contained in Y chromosome of these cells in 2 hours and 30 minutes by molecular genetics method, and then test these replication genetic factors by analytical instrument, so as to identify the sex of fertilized eggs in 15 minutes After that, the fertilized egg is put back into the mother The pregnancy rate was about 65% China feed industry information network HKW (author:)
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