1.Light
Lighting is the most important factor. It is important not only for the accumulation of astaxanthin, but also for the growth of Haematococcus pluvialis. Of course, astaxanthin can also be stacked at night, but the accumulation speed in the dark environment is 7 times lower than that in the case of light. The strong light can obviously suppress the growth of Haematococcus pluvialis to promote the accumulation of astaxanthin. Red light is beneficial to the growth of Haematococcus pluvialis, and blue light is more suitable for astaxanthin accumulation.

2.Temperature
The effect of temperature on the accumulation of astaxanthin is similar to that of light. High temperatures will promote the accumulation of astaxanthin. According to experiments, the production value of Haematococcus pluvialis is 2.5 times that of 20 ° C at a temperature of 30 ° C. However, the best temperature for Haematococcus pluvialis to grow is 25 ° C-28 ° C. Haematococcus pluvialis is no longer produced above 30 ° C. Therefore, high temperature promotes the accumulation of astaxanthin, but it is only suitable for the later stage of Haematococcus pluvialis.

3.Incubation solution
Experiments on the effect of stirring speed on Haematococcus pluvialis and astaxanthin showed that if the force was greater than 0.05N / M, the growth of Haematococcus pluvialis was inhibited, and astaxanthin accumulation was promoted.

4. Optimize the cultivation base
Acetate is a good source of nitrogen for cultivation, which can not only promote the growth of Haematococcus pluvialis, but also promote the accumulation of astaxanthin. However, with regard to the demand for nitrogen sources, most scientists think that low concentration of astaxanthin is advantageous for accumulation of astaxanthin. Some people also say that Haematococcus pluvialis is a good source of astaxanthin for accumulation of acetate in the cultivation base containing acetate. In addition to astaxanthin accumulation are also high concentration of ferrous ions, low concentration of phosphate.

5.Optimize environmental conditions

In fact, no matter what the environmental conditions, temperature or light, these are important for the accumulation of Haematococcus pluvialis and astaxanthin. But conditions that are suitable for one are often not suitable for the other. Suitable for the growth of Haematococcus pluvialis, the astaxanthin accumulation slows down; suitable for astaxanthin accumulation, the growth of Haematococcus pluvialis is unfavorable. Therefore, to optimize the environmental conditions, step cultivation can be used. First, let Haematococcus pluvialis have the best growth environment. After the purpose is achieved, changing the environment is a rapid accumulation of astaxanthin.

At present, the animal husbandry industry widely uses broad-spectrum antibiotics as growth promoters, which will reduce the number of bacteria in the intestinal tract of livestock and poultry, leading to a reduction in the synthesis of various vitamins. Due to the advancement of breeding technology, the production performance of various breeds of livestock and poultry has been continuously improved, the metabolic rate of various substances in the body has been continuously accelerated, and the demand for various vitamins has continued to increase.
　　 Because modern animal husbandry is driven by commercial factors, in order to obtain the best economic benefits, there are various stress factors in the living environment of various animals, such as crowding, environmental temperature and humidity, air quality, etc. When animals are under stress, the metabolism of various substances in their bodies accelerates and their requirements for various vitamins increase. If sufficient vitamins are not provided, the animal will be in a subclinical disease state, which affects growth and development, and will develop disease in severe cases. Compared with the above losses, the investment in adding sufficient vitamins is very small, which is in line with the principles of modern business practices.
　　 When an animal is in a special physiological stage, the need for vitamins is higher than usual, such as childbirth, disease, etc.
　　 High temperature in summer and other factors lead to a decrease in feed intake, while higher vitamins are required at high temperatures, and the amount of vitamins in feed is required to double.
　　 Due to the different quality of various individual vitamins used in general feed mills, there will be certain losses, such as expiration, static electricity, storage conditions, mixing uniformity, carrier quality, etc. At present, one of the biggest factors leading to the loss of animal husbandry is the low uniformity in the feeding process, which affects the uniformity. In addition to management factors, whether the various micronutrients in the feed are evenly mixed is a big factor, the most important of which is The important thing is vitamins. Because animals need vitamins at all times during the metabolic process, water-soluble vitamins do not accumulate in the body. However, the testing methods and standards for various water-soluble vitamins in my country have not yet been unified.
　　 Due to the different quality of various raw materials used in feed, such as high content of urease in soybean meal, which affects the absorption of other nutritional factors, it is necessary to multiply the added amount of vitamins by a certain safety factor.
Taking into account the above factors, after calculation, the cost increase brought by more vitamins and the increase in benefits brought by the normal growth and development of animals are compared, and the best benefit/cost ratio is found. The use of high vitamin content feed will make each feeding The feed conversion rate in the field was further improved.

Tea polyphenols (tea poRyphenoR TP) is a pure natural compound extracted from tea, accounting for about 18% to 36% of the dry weight of tea. It is also known as tea tannins and tea tannins. Generic term for polyhydroxyphenolic compounds.

The antioxidant effect of tea polyphenols is more than 20 times that of the traditional antioxidants vitamin C and vitamin E. Tea polyphenols can improve the body's immunity. When tea polyphenols are used in combination with vitamin E, the addition of vitamin E enhances the ability to scavenge free radicals, inhibits the generation of hydroperoxides, reduces the ability of tea polyphenols to scavenge free radicals, and plays a protective role. Polyphenols may repair damaged vitamin E.

Therefore, the combination of tea polyphenols and vitamin E not only has a significant synergistic antioxidant effect, but also has a stronger color protection effect than vitamin C after adding vitamin E to the meat. The color loss caused by polyphenols is further compensated, and the meaty sensory quality is improved.

Methionine is an important amino acid 1 The basic condition for maintaining good health and youth is a balanced diet. As we age, our body, spirit and emotions will undergo some changes. Appropriate use of methionine health supplements can improve the body's immune system, reduce diseases, and prevent aging. The role of methionine includes treatment of alcoholism, arthritis, depression, liver disease, and different mood disorders. It also supports and helps the liver, which is considered to be one of the important functions of methionine.

Methionine manufacturers

　　 Methionine is one of the essential amino acids that constitute the human body and participates in protein synthesis. Because it cannot be produced by itself in the body, it must be obtained from the outside. Lipid peroxide can damage the primary and secondary lysosomal membranes, release the acid phosphatase contained in the lysosome as a hydrolysis, and cause damage to important organelles such as cells and mitochondrial membranes. Methionine passes through a variety of Ways to combat these damages.
　　 Methionine is a sulfur-containing essential amino acid, which is closely related to the metabolism of various sulfur-containing compounds in the organism. When methionine is lacking, it will cause loss of appetite, slower growth or no weight gain, kidney enlargement and liver iron accumulation, and eventually lead to liver necrosis or fibrosis. Methionine can promote liver cell membrane phospholipid methylation, enhance membrane fluidity. Na+, K+ -ATPase pumps are strong, can reduce bile stagnation in liver cells, strengthen the transsulfide effect, and enhance cysteine ??in liver cells The synthesis of glutathione and taurine reduces the accumulation of bile acid in the liver, strengthens the detoxification effect, helps the liver cells to restore normal physiological functions, and promotes the resolution of jaundice and the recovery of liver function.
　　 Food without nutrition is of no value, so excessive intake of junk food will lead to malnutrition. However, nutritional supplements such as methionine can help the body get the necessary vitamins. Especially for the elderly, these nutrients are very important for health and longevity.

 In the actual process of raising pigs, pigs are prone to vitamin deficiency in winter. The main reason is the lack of green feed. In addition, some pig farmers have simple feed, lack of sunlight and poor air circulation, so pigs are easy to get vitamins in winter. Deficiency. 　　

Vitamin A deficiency. Dry skin, dull body hair, indigestion, reduced appetite, slow growth. Some have weakened vision and neurological disorders. In severe cases, cramps, turning circles, unsteady gait, ataxia, and even hindquarters can occur. The occurrence of this disease in sows can easily cause miscarriage or stillbirth, and the piglets born are blind. Even if the piglets born are normal in appearance, their physique is weak and easy to die. Prevention and treatment: 20 grams of pine needles, mashed juice or decocted juice, can be fed once in the feed, once a day, for several days; you can also feed more vitamin A-rich feed such as carrots and silage. 　　

Vitamin B deficiency. Growth retardation, vomiting, skin rash, hair loss, etc. When pantothenic acid is deficient, poor appetite, poor growth, diarrhea, coughing, loss of coat, dyskinesia, especially showing a "goose-walking" movement posture. When niacin is deficient, loss of appetite, weight loss, severe diarrhea, dermatitis, cracked skin, black scabs, neurological disorders, and anemia. Prevention: In the daily feed compounding, pay attention to adequate supply of vitamin B-rich feed. If corn is used as feed for a long time, it can cause niacin deficiency. The corn should be reduced in the feed and bran, silage, germinated feed and tuber juicy feed should be added.

The definition of vitamin and its role in animal feed Vitamins are a group of low-molecular organic compounds with different chemical structures, different nutritional and physiological functions. The content of vitamins in animal diets is about five ten thousandths, which is much less than other nutrients. Vitamins are neither a source of energy nor a structural substance of body tissues and organs, but they are indispensable to the normal life activities of animals. A small amount of vitamins can maintain the body's normal metabolism, growth and development, reproduction, resistance to diseases and normal survive. The main function of vitamins is to participate in the formation of highly active enzymes in animals. It has been proved that many kinds of enzymes contain vitamins. For example, vitamin B1 is a coenzyme of oxidative carboxylase, which participates in the sugar metabolism pyruvate decarboxylation reaction; vitamin B2 is a component of the prosthetic group of yellow enzymes and participates in biological oxidation in the body. If one of these vitamins is lacking, the body's corresponding metabolism will undergo abnormal changes. Most vitamins cannot be synthesized in animals, and only a few can be synthesized by animals themselves (microbes that are parasitic in the rumen of ruminants can synthesize multiple vitamins), but some vitamins are synthesized in very small amounts and cannot meet the normal needs of animals. It can be obtained from feed to ensure its normal growth, development and reproduction. 　　 It has been ascertained that 13 kinds of vitamins are needed in the diet of animals. Lack of any of them will cause abnormalities in the animals, such as growth retardation, decreased productivity, weakened disease resistance, and even death. Vitamin deficiency often has syndromes, and it is not easy to quickly determine which vitamin is lacking. Therefore, it is necessary to add sufficient amounts of various vitamins to the animal diet according to the standard to eliminate various unfavorable factors that destroy vitamins and avoid vitamin deficiency. .