High-yielding cows need to eat 80 kg to 100 kg of feed every day (about 20 kg to 25 kg of dry matter) to meet their physiological needs. High-yielding dairy cows generally have a daily milk output of more than 30 kg and a milk production period of more than 6,000 kg. Since high-yield cows need to extrude large amounts of milk, they need a lot of nutrients.

Due to the digestion and absorption of nutrients in these feeds, not only the digestive organs are strained, but also the metabolism of the entire organism is enhanced. Therefore, the cows must be physically strong to adapt to these physiological functions.

The diet of high-yielding dairy cows requires complete nutrient distribution, rich feed types, good quality, and easier digestion and absorption. Generally, the diet is based on high-quality hay, silage, roots and succulent green feed, and appropriate concentrates are added at the same time. Because the green and juicy feed not only has good palatability, but also promotes the full secretion of digestive juices, thereby improving the utilization efficiency of other feeds. Practice has proved that high-yield and stable production can't be achieved solely by feeding and concentrating materials. Only by adding appropriate concentrates on the basis of increasing coarse materials can the full-scale effect be achieved.

The diet of high-yielding dairy cows should not only ensure the quantity, but also ensure the quality. The feed should include lysine, tryptophan, arginine and other amino acids necessary for the formation of milk. In other words, the higher the total protein price of the high-yielding dairy cow's diet, the better the effect on the milk production. In addition, the more appropriate the proportion of coarse material, succulent feed, and fine material in the diet, the better the quality, and the more appropriate the proportion of mineral supplement, the higher the yield and yield.

High-yield dairy cows have a large number of feeds to be eaten every day, so the number of feedings should be increased and they are usually fed more than 4 times a day. Drink water should have automatic drinker, if there is no automatic drinker, the number of drinking water should be more than 5 times a day.

In day-to-day management work, it must be done daily and in the afternoon. Daily cows are given suitable outdoor exercise.

API Powder

API Powder is fully defined in ICH Q7A as any substance or mixture of substances intended for use in the manufacture of pharmaceutical products and, when used in pharmaceutical products, as an active ingredient of pharmaceutical products. Such substances have pharmacological activities or other direct effects in the diagnosis, treatment, symptom relief, management or prevention of disease, or can affect the function or structure of the body. The active ingredient of a medicine. Only when an API is processed into a pharmaceutical preparation can it become a medicine for clinical application.
According to its source, apis are divided into chemical synthetic drugs and natural chemical drugs.
Chemical synthetic drugs can be divided into inorganic synthetic drugs and organic synthetic drugs. Inorganic synthetic drugs are inorganic compounds (very few are elements), such as aluminum hydroxide and magnesium trisilicate for the treatment of gastric and duodenal ulcer, etc. Organic synthetic drugs are mainly made of basic organic chemical raw materials, through a series of organic chemical reactions and drugs (such as aspirin, chloramphenicol, caffeine, etc.).
Natural chemical drugs can also be divided into biochemical drugs and phytochemical drugs according to their sources. Antibiotics are generally produced by microbial fermentation and belong to the category of biochemistry. In recent years, a variety of semi-synthetic antibiotics are the combination of biosynthesis and chemical synthesis products. Among apis, organic synthetic drugs account for the largest proportion of variety, yield and output value, which is the main pillar of chemical pharmaceutical industry. The quality of the API determines the quality of the preparation, so its quality standards are very strict. All countries in the world have formulated strict national pharmacopoeia standards and quality control methods for the widely used APIS.
Specific API after processing -- pharmaceutical preparations
The term API is used mainly in relation to the finished product. Mainly raw materials obtained by chemical processing means, supply raw materials for the production of finished drugs. For example, cefpirome sulfate for injection is a drug, then cefpirome sulfate is an API

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