China is accustomed to refer to pigs weighing less than 15 kg as suckling pigs. The feed used in this stage is called suckling pig feed. With the improvement of pig raising level, the accelerated development of the feed industry and the rapid development of large-scale pig farms, the pig feed has been subdivided into two stages in the market for pig-producing areas, namely high-grade suckling pigs (also known as teaching materials). ) and general suckling pigs. It is generally considered that the feed material refers to the feed used when the pig starts feeding 5 days after the birth and until 10 days after the weaning. Generally, the piglet feed refers to the feed used by the piglets after weaning for 10 days to 15 kg. 1, product control There are also practical problems in the use of suckling pigs. After using the teaching material and transferring it to the general suckling pig material, the piglets will have decreased feed intake, stagnant growth and increased diarrhea within one week. It is necessary to deal with the problem of the connection between the general suckling pig and the high-grade suckling pig. Generally, the grades of suckling pigs and high-grade suckling pigs are too large. There are many high-grade suckling pigs that solve the problems of diarrhea, weak babies and feed intake, but the growth rate is not ideal enough, and the feed compensation is not ideal, so the cost of weight gain is very high. Since many teaching materials use high-dose pharmaceutical additives to control diarrhea, the suckling pigs do not need to teach the trough, switch to the general suckling pig material or even use the piglet material, the growth rate is relatively slow, so that the advantage of the teaching material disappears. Exhausted. At present, the standard of good quality and pass-through teaching materials should be that under normal feeding conditions, normal lean meat-type piglets are weaned for 21 days, and three days after weaning, feed intake and growth rate should be restored to pre-weaning levels; From the day of weaning, the rate of nutritional diarrhea is less than 21% within 10 days, the feed conversion rate is about 1.2, the daily average weight gain is about 280 grams, and the feed intake is about 330 grams per day; based on the current raw material cost, the feed cost is not More than 5,500 yuan / ton. The standard of good and pass-through general suckling pig products should be that after feeding the trough, the feed intake will continue to increase, the growth rate will continue to increase, and the diarrhea rate will not increase; the body weight will reach 15 kg at 42 days of age, and the feed remuneration will be around 1.5. According to the current raw material cost, the feed cost is not higher than 4,500 yuan / ton. Quality control and processing are very important tasks, but there are still many feed companies that don't pay attention. There are good quality raw materials, and there is no guarantee of quality control and processing technology, and still can't make good suckling pig products. Formulation, raw materials, quality control, and processing are closely combined to produce good quality products. The six indicators for the implementation of national feed products, the laboratory of the feed factory must be done by themselves, and other key indicators must also be regularly sent to the relevant units. In fact, it takes a lot of money and time, but it can get very good results. For example, if zinc sulphate produced in a certain place is used, if the heavy metal content exceeds the standard, it can be sent once, and only when the supply channel is changed, the inspection can be carried out. 2, processing points In order to produce good quality piglets, it is best to measure starch gelatinization rate, soluble protein, fishmeal freshness, peroxide value and some health indicators such as Salmonella. The quality control and processing of suckling pigs are almost the same as those of other pigs. There is not much speciality. Only some heat-sensitive raw materials are used. Special attention should be paid to controlling the granulation temperature and quenching time. The quenching and tempering temperature has a great influence on starch gelatinization. It is reported that there is a negative correlation between the tempering temperature and the degree of gelatinization. The greater the difference between the temperature of the granulator and the pellets, the higher the degree of gelatinization. The suckling pig pellets cannot be made too hard, too hard and seriously affect the palatability. Due to the physiological characteristics of the digestive tract of the suckling pig and the digestibility of the feed, the degree of starch gelatinization is required to be higher. Therefore, other methods are needed to appropriately reduce the hardness of the suckling pig material. Therefore, it is particularly important to choose a suitable compression ratio ring mode. Generally, the granulation ring mode compression ratio is 6-8. If the bulking material is used much, the compression ratio is 3, and the material made in this way is crisp, but the powder rate is higher. After the pulverized corn and soybean are pulverized, there is generally no problem with the particle size. From the comprehensive consideration of various factors, the particles are suitable at 400-600 microns. If making powder, pay attention to mixing uniformity. According to reports, when the feed mixing variation coefficient of piglets decreased from 106.5% to 28.4%, the average daily gain increased by 41%, feed utilization increased by 18.52%, and feed intake increased by 18.33%. Therefore, the feed mixing time of weaned piglets should reach 4-6 minutes, and the coefficient of variation should be no more than 10% according to the requirements of China's compound feed standard to ensure the feed is fully mixed and the nutrient composition is evenly distributed. Therefore, it is best to take 2 pulverization processes (mixed and smashed once), so that the appearance of the product looks like a single raw material, and it will be more uniform. The gelatinization rate of the particles has a huge impact on the performance of the animal. According to reports, increasing the gelatinization rate by 5%-10% can increase the animal performance by 3%-5%, and has the same effect on suckling pigs. NdFeB Magnet,Motor Magnet,Segment magnet Sunxal Magnetics Co., Ltd. , http://www.hlmagnets.com