Processing and modulation of pig energy feed
The nutritional value and digestibility of energy feeds are generally high, but the seed coat, hard shell and internal starch granule structure of the fruit-based feed affect the digestion, absorption and utilization of nutrients. Therefore, this type of feed must be processed before being fed so that it can fully play its role.
1. Crush. This is the simplest and most common method of processing. The pulverized fruit is convenient for the rabbit to chew, increasing the contact area between the feed and the digestive juice, so that the digestion is relatively complete, thereby improving the digestibility and utilization rate of the feed.
2. Soak. The feed is placed in a tank or a tank, and water is added in a ratio of 1:1 to 1:1.5 for soaking. The feed of cereals, beans and oil cakes becomes swollen and soft after soaking, which is convenient for rabbits to digest. Some feeds are soaked to reduce some of the toxicity and odor, which improves palatability. However, the time of soaking should be well mastered. If the soaking time is too long, the loss of nutrients will be caused, and the palatability will also be reduced. Some energy feeds may even deteriorate due to soaking for too long.
3. Cooking. Energy feeds such as potatoes and beans cannot be fed and must be cooked. At the same time, cooking can also improve its palatability and digestibility, but the cooking time can not exceed 20 minutes.
4. Germination. After the grain particles are germinated, a part of the protein can be decomposed into amino acids. At the same time, the content of sugar, carotene, vitamin E, vitamin C and B vitamins has also increased greatly. This method is mainly used in the winter and spring seasons where there is no green feed.
5. Granulation. Rabbits have the hobby of biting hard food. This hobby can stimulate the secretion of digestive juice in the digestive tract of rabbits and promote the peristalsis of the digestive tract of rabbits, thus improving the digestion and absorption rate of rabbits. The compound feed can be made into granules, which can make the starch mature; it can change the anti-nutritional factors in soybean (4766, -23.00, -0.48%), bean cake and grain feed to reduce the harm to rabbits; Homogenization. Therefore, granulation can significantly improve the palatability and digestibility of the compound feed.
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