First, the selection of good breeds has a direct impact on the economic benefits of pigs. Compared with common breeds, the consumption of good breeds is about 15% lower. The breeder's rate, survival rate, growth rate and feed utilization rate of the high-quality pigs are also relatively high. Selecting species should be based on the characteristics of the species to choose, such as the appearance characteristics, backfat thickness, the level of lean meat, unit weight gain feed consumption rate. Changbai, Yorkshire, Duroc, and Pietrain are all excellent breeds, and they are also excellent fathers of economic hybrids. Second, economic hybrids Economic hybrids, making full use of heterosis, is the main means of producing lean-type commercial pigs. The common hybrid combinations are Du Changda or Du Dachang’s economic hybrids. The economical crossbreeding of good breed pigs with local breed pigs is a good way to improve local pig breeds. It can significantly increase pig lean meat percentage, reduce feed consumption, shorten the time of slaughter, and increase economic efficiency. III. Scientific feeding and management The growth and development process of pigs is basically divided into several stages: pig long bones, medium pig long meats, and big pig long warts. Scientific matching must be carried out in feed nutrition for different growth of pigs. The stage provides reasonable and sufficient nutrition to ensure the pig's normal growth and development needs. In order to make lean pigs give full play to their excellent production performance, pigs should also be provided with good feeding and management conditions. Standardized feeding and management can greatly reduce feed consumption and reduce feed costs. In the pig farms with good economic returns, 26% of the reduction in feed consumption was attributed to improvements in feeding management. To cultivate good lean pigs, we must first raise piglets. The key to keeping piglets lies in doing a good job of "three meals," and having a good "three passes," that is, catching "infant food" is too good for a "birthday pass", grasping "opening food" for a good "feeding" pass, and grasping "wangshi". Have a good "weaning" off. In the way of feeding generally use a one-stop method. In order to increase the lean meat percentage of pigs, it is also possible to carry out early free-feeding and later-term quantitative feeding methods to reduce fat deposition. Lean pigs are fed with dry or wet ingredients. Tests have shown that dry or wet mixes are more easily digested and absorbed by pigs than soups, meeting the physiological requirements of pigs and being easy to feed; the ratio of water to wet mixes is approximately 1:1.25-1.5, with fingertips. Do not drizzle is appropriate. The piglet will be fed 4 times on a day, 3 times after 50kg weight, and the drinking water will not be limited, providing clean drinking water with suitable temperature. Fourth, do a good job of epidemic prevention and control The occurrence and spread of swine disease seriously endanger the development of the pig industry, disease or death, will bring huge economic losses to pig producers. In particular, adopting traditional methods to raise pigs is even more threatened by epidemics. It is imperative to establish standardized immunization procedures for prevention of epidemics, adhere to regular and irregular epidemic prevention and deworming in spring and autumn, and do a good job in sanitation and disinfection.
API
what is API?
High-purity plant monomer refers to one or more single chemical components with specific biological activity or pharmacological effects extracted from plants, and its purity is usually high, meaning that the content of the component in the extract reaches a certain percentage, and the content of other impurities or irrelevant components is low.
These plant monomers are usually secondary metabolites of plants, such as flavonoids (flavonoids), alkaloids (alkaloids), terpenoids (terpenoids), phenolics (phenolics), etc., which play a variety of physiological functions in plants such as defense, signal transduction, and antioxidant. Due to their pharmacological activity, high-purity plant monomers are often used in pharmaceuticals, health products, cosmetics and other biotechnology products.
For example, Naringenin is a high-purity plant monomer extracted from citrus plants with antioxidant and anti-inflammatory activities; Corosolic acid is a high-purity active monomer extracted from loquat leaves, which is considered to be effective in treating type 2 diabetes and obesity.
Extraction and preparation of high-purity plant monomers usually require a complex separation and purification process, including extraction, column chromatography, crystallization, recrystallization and other steps to ensure the purity and activity of the final product. These processes may be required by specialized biotechnology companies.
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