Processing and Storage methods of Pig Feed

   can increase the feed intake of pigs and increase the digestion and absorption of nutrients by using appropriate methods to process and prepare the feed.

   I. selection of feed raw materials

   is not a complete feed formula can be made into a comprehensive nutrition of good feed, nutrition rebalance in the formula, if the raw materials, storage problems, or all previous efforts have been wasted. When preparing diets, farmers often only pay attention to the raw materials which are cheap and easy to get, while ignoring other adverse factors. Attention should be paid to the following problems in the use of raw materials:

   (1) pay attention to the nutrient rebalance of the raw material quality diet formula if Sichuan adulterated feed, the formula will lose its original value, and the feed conversion rate in the body will inevitably decrease.

The raw materials that    may be adulterated at present are: fish meal mixed with hydrolyzed feather meal, leather meal, urea, smelly fish and cottonseed meal to decrease protein quality or residual heavy metals and toxins; defatted rice bran mixed with rice bran, sawdust and urea to make its palatability worse and feed quality reduced; yeast powder mixed with soybean meal, or soybean meal mixed with soybean husk, yellow corn meal or soybean meal mixed with stone meal and corn meal to reduce egg endoplasmic content Cornmeal mixed with corncob, mixed grain powder with clay powder or stone powder, mineral additive with clay powder, meat and bone meal with feather powder or urea, etc., all make its composition content insufficient or do not meet the specifications. Therefore, in the selection and purchase of raw materials, we must pay attention to identify the authenticity of raw materials; raw materials that do not meet the requirements can not be used even if the price is cheap.

   (2) unstable quality raw materials some raw materials are not adulterated to reduce the quality, but due to improper processing methods to increase their impurity content, nutrient instability, or because of different varieties and producing areas, the composition is the most volatile. For example, the protein content and nutritional value of fish meal vary greatly depending on the difference between fish species and phosphorus, viscera, fish bones, salt and moisture, and whether they are defatted or not. Cruller's value is determined by the way of oil extraction, residual oil and water content, and the amount of impurities; bran often has a large shell content due to processing technology, the deterioration degree of fat content in bran, the amount of flour in bran, etc., the quality will be very different. The quality of meat and bone meal is different due to the amount of offal, such as viscera, bone, hair, blood, degree of corruption, processing technology, etc., and all kinds of additives are different due to different carriers and raw material quality. These will inevitably lead to the imbalance of nutrients, some nutrients will be wasted more than needed, some nutrients will affect animal development because of deficiency, and harmful substances will also affect poultry health and product quality. therefore, the diet should not be prepared with raw materials with unstable quality, otherwise it will cause poor feeding effect, low conversion rate, high cost, and should be used after determining its nutrient content and quality as far as possible.

   II. Storage methods of feed

   feed raw materials or prepared feed must be placed in a dry, ventilated place to prevent specific mildew. In the summer and autumn plum rain season, it is necessary to turn the sun and reverse the package. In processing, the materials purchased first should be processed first, and then the materials purchased should be processed later, and the foundation of the old materials must be cleaned up.

   III. Feed processing technology

   for energy and protein feed, can be processed in the following ways.

   (1) Grinding and crushing general seed feed has a hard texture, or has a shell, except for a few seeds such as corn and sorghum, which can be fed as a whole when they are free to eat, they are usually ground or crushed and then fed, with a particle diameter of 0.2mm to 1.0mm.

   (2) granules are mixed with all kinds of feed and fed into the granulator to make columnar or spherical shape for feeding piglets.

   (3) Cooking legumes, such as peas, broad beans and soybeans, can improve the nutritional value of protein.

   (4) roasted corn and soybeans are fried and dried at high temperature (130-150 ℃), which is suitable for the preparation of food for piglets.

   (5) virus-free cottonseed (kernel) cake and rapeseed cake can also be detoxified and then fed to breeding boars and sows; those without detoxification can be fed to fattening pigs.

   IV. Processing equipment

The complete sets of    feed processing equipment are as follows: mixer equipment; ring mode particle press; crushing equipment; puffing, drying, cooling equipment; crushing, grading, dust removal equipment; conveying, cleaning, impurity removal equipment.