Technology of low pollution Diet for Pigs (Research Progress)
[abstract] it has been a common goal for producers and nutritionists to maximize the production performance of each pig. Therefore, the general diet has little or no consideration for the excretion of nutrients, resulting in the excretion of excess nutrients (mainly nitrogen and phosphorus) with feces and urine. In recent years, the public has paid more and more attention to the environment. Through nutrition technology, it has become a hot spot in the field of science and nutrition research to improve the feed conversion efficiency of pigs and reduce the discharge of sewage (feces and urine). By supplementing synthetic amino acids and reducing dietary protein, nitrogen excretion can be significantly reduced. The addition of phytase to the diet can increase the utilization rate of phosphorus, reduce the amount of dietary phosphorus, and thus reduce the excretion of phosphorus. In addition, antibiotics, probiotics, single cell protein, yeast and organic chromium also play a certain role in reducing the waste of nutrients in pigs.
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Types and use of Natural Coloring Feed Additives commonly used in chickens
Adding a certain amount of natural feed rich in carotenoids (lutein) to the chicken diet can increase the color of poultry products and improve the commodity grade. Such as: marigold, aggregate grass, clover, kelp (or other seaweed), pine needle powder, gardenia, orange peel powder, amaranth, alfalfa, pumpkin, red chili noodles, cabbage and so on. Marigold collected marigold petals dried and ground into fines, adding 0.3% to chicken feed can make laying hens produce dark orange yolk eggs, and broilers have golden skin. Polymerization
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Prevention and treatment of Porcine circovirus Type 2 infection
So far, there are no effective measures to control and eliminate other diseases caused by porcine circovirus type 2 infection, and there are no effective commercial vaccines and drugs to prevent porcine circovirus type 2 infection. Moreover, porcine circovirus type 2 infection is very resistant to conventional disinfectants, which brings difficulties to the purification of pig farms. At present, comprehensive control measures should be taken. 1. Change and improve the feeding mode to achieve all stages of pig production, so as to avoid mixed feeding of pigs of different ages.
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