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Special feed additives developed and used abroad
In order to improve the economic benefits of aquaculture, many countries in livestock and poultry and fish farming, in addition to feed additives commonly used in feed, but also the development and application of a variety of special feed additive substances, several options are introduced as follows: 1, Citric acid. British animal husbandry researchers added 2% citric acid to feed for piglets to feed weaned piglets, and their daily weight gain was about 20% higher than that of the control group. 2, copper elements. In addition to adding antibiotics to fattening pig diets in Japan, trace amounts of copper were also added to increase pig feed intake, increase body weight, increase feed utilization rate by 8%, and reduce the incidence of disease. 3, flavomycin. German researchers added flavomycin to the feed (5 mg per kilogram of piglet feed and 20 mg per kg of pig feed), resulting in a 5 percent increase in feed conversion and an average daily gain of about 10 percent. 4, tree mold wine. Australian researchers have added a tree wine to the feed to feed the piglets, which has led to a significant reduction in the chance of death of piglets due to diarrhoea and redness. This is because tree wine can kill bacteria in dirty water, which can reduce or avoid the development of acute intestinal infectious diseases. The amount of tree wine is 25-40 grams per kg of feed. 5, nucleic acid. A Japanese company technician added nucleic acid to the chicken feed to make the chicken tender and easy to cut, and the color was very bright. According to the experiment, after long-term feeding of feed supplemented with nucleic acid, the militant character of the chicken apparently converged, which promoted the fattening of pork dock. 6, fish oil. In order to reduce the cholesterol content of eggs, US researchers added fish oil to the feed of laying hens, which reduced the cholesterol content of eggs by 20%, which is very beneficial to human health. 7. Betaine. German researchers added appropriate amounts of magnesium acetate to fish feeds to feed Nile tilapia. As a result, the growth of fish was greatly accelerated, and the daily gain increased by 30%. 8, inositol. The addition of an appropriate amount of inositol to the fish feed by the unregulated fish farmer not only increased the daily gain of the fish by 8%, but also reduced the incidence of common diseases of the turtle. Inositol additions: 400-500 mg daily for salmon, 300-500 mg daily for rainbow trout, and 200-300 mg daily for shrimp feed. 9, saccharin. Russian researchers added saccharin to pigs after they were dissolved, increasing the daily gain of pigs by more than 7%. Saccharin was added in an amount of 0.05 grams per kilogram of feed. (154000, Jiamusi Agricultural College, Heilongjiang Province, Xue Yong)