First, the benefits of grass particles
1. The growth and utilization of forage is greatly affected by the season. In winter, the forage is yellow, contains less nutrients, and the livestock lack grass. The warm season forage grows vigorously and is rich in nutrients. Therefore, in order to make good use of the long-term use of warm season forage, castration, drying, smashing, processing into grass particles to save, you can feed livestock and poultry in winter.
2. The feed conversion rate is high. In winter, grass granules are used to feed livestock and poultry, and more forage, eggs and milk can be obtained with less forage.
3. small volume. The grass pellet feed is only about 1/4 of the raw hay volume, which is convenient for storage and transportation. The dust is less beneficial to human and animal health. Feeding is convenient, which can simplify the feeding procedure and create conditions for intensive and mechanized animal husbandry production.
4. Increase palatability and improve forage quality. For example, hibiscus has a special odor of coumarin, and livestock is somewhat unpleasant, but after being made into grass granules, it is a forage with strong palatability and high nutritional value.
5. Expand the source of feed. Such as Caragana, Youruo, Yangchai, etc., the branches are coarse and hard, processed into grass particles after crushing, it becomes a forage that the livestock likes to eat. Other processed by-products such as crop by-products, clams, straw and various leaves can be used to feed livestock and poultry.
Second, the processing technology of grass particles
1. The most critical technique for processing grass particles is to adjust the water content of the raw materials. First, the water content of the raw material must be measured, and then the water is mixed to the water content required for processing. According to the measurement, the grass granules are made of leguminous forage, the optimum water content is 14% to 16%; the grass forage is 13% to 15%.
2. The processing of grass particles is usually carried out by a pellet feed mill. The grass powder is stirred and squeezed during the rolling process. Under normal conditions, the temperature of the particles just emerging from the sieve hole reaches about 80 °C, and the water content is generally reduced by 3% to 5% from high temperature to room temperature. Therefore, the water content of the cooled grass particles does not exceed 11% to 13%. Due to the low water content, it is suitable for long-term storage without mold and deterioration.
3, grass particle processing can be formulated into grass particles containing different nutrients according to the nutritional requirements of various livestock and poultry. The particle size can be adjusted to the mill and processed as required.
Third, pellet feed ingredients and effects
In order to produce compound feed for various livestock and poultry, the utilization rate of feed is improved. Use grass powder (green hay, crop straw) 55% ~ 60%, concentrate (corn, sorghum, oats, bran, etc.) 35% ~ 40%, minerals and vitamins 3%, urea 1% composed of compound feed, with The pellet feed pelletizer is pressed into pellet feed. When pressing, add 17 kg of water per 100 kg of material, add 100 ml of formaldehyde solution with a concentration of 37% to improve its nutrient content and digestibility. According to the test, 8 months old lambs were produced and fattened with pelleted feed for 50 days. The daily weight gain averaged 190 grams, each weight gain was 1 kilogram, and the feed consumption was 6.4 kilograms. The use of pellet feed to produce fat lambs is a viable way to promote the development of aquaculture in both pastoral and agricultural areas.
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