Problems such as "flower liver" and "white liver" are relatively concentrated, which is what we feel most deeply in field research. Many California bass feeds are high in protein, sugar and fat, but the digestibility of nutrients is relatively low, which requires farmers to pay attention to protecting their liver and gallbladder in their daily feeding. The emergence of Youdanling is aimed at this pain point, and it has finally been recognized by farmers through a lot of practice. It has the functions of protecting liver, benefiting gallbladder, detoxicating and reducing blood fat, so it is usually mixed with materials in practical application, and its rich bile acid has the following two functions:
0 1 emulsifying, activating and promoting absorption bile acids are amphiphilic, which can emulsify feed fat into the water environment of intestinal tract, thus contributing to the digestion of fat; Bile acid can also activate pancreatic lipase, which makes lipase have higher enzyme activity in the anterior segment of small intestine at pH6-7. Bile acids that form chylomicrons with fat-soluble substances such as fatty acids and phospholipids can be recognized by receptors of intestinal epithelial cells, thus promoting the absorption of lipid nutrients.
Bile acid, as a signal molecule, regulates the metabolism of fat and sugar by binding to farnesol X receptor (FXR) and G protein-coupled receptor (TGR5).
Hepatobiliary syndrome
But for California bass farming, just protecting the liver and gallbladder is not enough. How to better protect health, enhance immunity and increase survival rate from the source is the key to culture. As a natural astaxanthin product, it has played an inestimable role in improving the health status of California bass and enhancing its nutritional value, which is also an important reason why such products have been widely used in aquaculture in recent years:
0 1 strong antioxidant astaxanthin is a strong antioxidant, which can effectively scavenge free radicals (free radicals are an important factor leading to physical decline and immune decline) and play an antioxidant role. Astaxanthin prevents the oxidation reaction by preventing the interaction between oxygen atoms in cell membrane and unsaturated fatty acids, thus protecting cells and DNA from the damage of oxidation reaction, protecting intracellular protein and enabling cells to metabolize efficiently.
Enhance immunity natural astaxanthin can promote the production of immunoglobulin in the body, enhance the immune function of the body, improve the microecological balance in the body, prevent the invasion of viruses and bacteria, and improve the vitality and growth rate of the body; After full absorption, it is helpful to fight against various diseases caused by sudden environmental changes such as temperature difference, algae bloom, high temperature and heavy rain, and its anti-stress ability is greatly strengthened.
Improving the nutritional value Astaxanthin can also improve the nutritional value of California bass. Long-term feeding with astaxanthin-containing feed can significantly increase the contents of vitamins A, C, E and lipids in body tissues.
Liver after using Youdanling and Youqingsu
After using Youdanling and Youqingsu, the problems of "flower liver" and "white liver" of California bass have been obviously improved, and the liver color is ruddy (returning to the common pig liver color), the blood vessels are clear, and there is basically no swelling, whitening, yellowing, bleeding and other phenomena, which farmers are satisfied with.
The liver of California bass has detoxification and immune function. Once the liver is damaged, the immunity of fish will decrease, which will easily lead to various diseases. If the health care work is done well, the disease resistance of California bass is naturally strong. In view of hepatobiliary syndrome, prevention should be given priority, scientific feeding should be carried out on the premise of maintaining good water quality, and sum should be added to feed to improve the breeding efficiency finally.