The reason why the pig is unhappy
Some farmers report that the pigs raised at home are unhappy or not. The author believes that the reasons are mainly the following six aspects. I. Weaning is irrational: Farmers raise more pigs and adopt a weaning method. They are listed immediately after weaning. The original pig-centered pigs, the cohabitation among their siblings, and the stable and comfortable living conditions suddenly change, making it hard to adapt and increase the impact. weight. The number of feedings to the pigs should be gradually reduced from 5 to 6 days before weaning until they are fully weaned. Second, the feed is not timely: the pigs did not feed in time during the lactation stage. They could not eat well after weaning, resulting in slow growth and development. Generally, pigs should be fed at the age of 10 days, and they should start with fragrant, sweet, brittle and easily digestible feeds, and gradually feed the normal feed later. Third, the feed and feeding methods are irrational: after weaning, the piglet can not only not eat breast milk, and the feed quality is also worse than the lactation period. The number of daily feeds is also reduced from 6 to 8 times before weaning, and is reduced to 3 times daily. These are severe. Changes hinder the normal development of the pig. Therefore, when buying pigs, it is necessary to ask the seller in detail about the feeding and management of pigs, so that the quality of feeds gradually transitions, and the number of feedings gradually changes from more to fewer. Fourth, the environmental conditions change too much: the pigs are mother-centered and co-habitants before weaning. After weaning, it is usually a pig lap. Pigs cannot adapt to this lonely life for a short period of time. In particular, eating in cold weather in the winter can not sleep well, and they can easily become sick or even die. Therefore, when purchasing pigs, it is necessary to understand their original feeding conditions as far as possible, to create a comfortable living environment for the pigs, and to gradually change the feeding conditions. V. Extensive management: Farmers are usually pigs in a circle, and some pigs eat, sleep, and excrement in the same place, plus cleaning, washers are not working, resulting in environmental pollution, poor sanitary conditions, especially in the winter, It is easy to cause a series of diseases such as swine cold and diarrhea, which is extremely unfavorable to its growth and development. In the actual pig production, pigs can compete for food and grow fast, depending on how fast they eat and how well their disposition is grouped with 3 to 6 heads. In addition, it is necessary to do a good job of training to make it a fixed point of eating, defecate, sleep, sleep and maintain sanitation. 6. The epidemic prevention and the delisting time are incorrect: Farmers buy more pigs than bazaars, and carry out epidemic prevention and castration at the time of purchase. The three unfavorable factors such as weaning, epidemic prevention, and castration were all added to the piglets, so that the piglets could not recover in a long time, seriously affecting the normal growth and development of pigs, making them grow slowly and forming stiff pigs. Generally, boars not reserved for breeding can be castrated at 20 days of age and gilts can be aged from 30 to 40 days. For the prevention of certain infectious diseases, swine fever can be injected before 30 days of age. The erysipelas vaccine can be inoculated at 90 days of age in pigs.
our company has ran Mineral Products Trading many years,we have close relationship with them,The relationship between mankind and chemical industry is very close,
universal access to all aspects of life. In modern life, chemical
products can not be obtained almost anytime, anywhere. From the material
life such as clothing, food, shelter and transportation to the
spiritual life such as culture and art, entertainment and so on, all
require chemical products to serve them. Some chemical products play an
epoch-making role in the history of human development. Their production
and application even represent a certain historical stage of human
civilization.
As a category of knowledge, chemical industry has many kinds of
decomposition or comprehensive classification methods in different
historical periods and under different demands. According to the source
of raw materials, product classification, but also in accordance with
the law of history, history classification. Each division method is
difficult to strictly adapt.
Among them, the oil refining industry is to create a higher output value of the industrial sector is the country's important economic lifeline. Natural gas is often symbiotic with petroleum and natural gas chemical industry is often attributed to petrochemical industry. At this stage, oil refining and petrochemicals are the main fuel chemical industry. Products produced by the fuel and chemical industries include fuels and chemical raw materials, which are mainly organic chemical raw materials (except for the syngas used in the production of inorganic chemicals such as synthetic ammonia). Therefore, the petrochemical industry is also a major part of the basic organic chemical industry.
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This volume seeks to reduce unnecessary crossings, a comprehensive classification of methods designed from the raw materials of fuel chemical branches; from the product of inorganic chemicals, basic organic chemicals, polymer chemicals, fine chemicals and other branches; from the common The branch of chemical engineering proceeding from the regularity of the process, and the comprehensive branch proceeding from historical development and horizontal linkages. Fuel chemical raw materials are oil, natural gas, coal and oil shale and other combustible minerals, so it is divided into petroleum refining industry, petrochemical, natural gas chemical, coal chemical and shale oil industry.