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healthy beef

21.07.2015

Nutritionists consider polyunsaturated omega acids one of the main components of a healthy diet, and it is especially important to maintain a balance between the consumption of omega-3 and omega-6 fatty acids (that is, those in which the second double bond is between the 3rd and 4th or 6 -th and 7th carbon atom, counting from the tail of the molecule). We get these acids either with vegetable oil, primarily olive oil, or by eating fish, which, in turn, fed on unicellular algae and crustaceans that eat the same algae.

Omega-3 acids are not synthesized in animal organisms. However, we eat little oil, and a lot of meat, and an imbalance is obtained. Biotechnologists want to remove this imbalance. Thus, specialists from China and Japan have already conducted experiments on the introduction of spinach or nematode genes responsible for the synthesis of omega-3 acids into the genomes of dairy cows, pigs and sheep. Now it's the turn of the beef cow.

Chinese technologists from the National Beef Improvement Center in Shanxi Province, led by Cheng Gong, built the work like this. They inserted a gene isolated from the famous nematode Caenorhabditis elegans into skin cells taken from a cow embryo. Then these cells were reprogrammed, embryos were made with their help and planted in cows. As a result, 94 calves were born from 20 cows, 17 of which soon died. This happened due to inflammation and malformations, which is associated with shortcomings in the procedures for reprogramming and subsequent preparation of the embryo. Three calves survived and, according to their creators, were quite healthy.

The analysis showed that the goal was achieved: the ratio of omega-6 and omega-3 acids decreased from 5,33:1 to almost equal - 0,95:1. fatty acids, more suitable for the diet of a modern person.

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