Under the condition of intensive pig rearing, the pigs eat mixed (mixed) feeds such as corn, soybean meal and fish meal. The increasingly refined feed diet has a very low crude fiber content, which leads to digestive dysfunction, constipation and other “rich diseases†in pigs, which affects the improvement of pig-raising efficiency. In fact, letting the pigs eat coarse grains and maintaining appropriate crude fiber content in the diet are particularly effective in reducing the cost of raising the pigs and improving the production performance of the pigs. The benefits of raw feed to pigs Adjusting nutrient levels As dietary fiber enters the gastrointestinal tract, its volumetric expansion increases, expanding the gastrointestinal volume and making the pigs tolerate hunger. At the same time, crude fiber can dilute the concentration of nutrients such as energy and protein to achieve rational use of feed. Reducing the cost of feeds To increase the crude fiber content of feed diets, it is possible to replace the feeds with lower crude fiber content but with higher prices by using feeds with higher crude fiber content but lower prices, so that units with the same output Feed costs are reduced. Stimulation of gastrointestinal motility crude fibers into the gastrointestinal tract, can stimulate gastrointestinal motility, is conducive to the absorption of nutrients in the gastrointestinal tract, promote normal excretion of feces, reduce the incidence of gastrointestinal ulcers. Controlling fat deposition to increase crude fiber in feed can reduce serum total and low-density lipoprotein levels, which can effectively regulate fat metabolism and control fat deposition in pigs. Promoting the soluble fraction of the pig dietary fiber plays an important role in reducing the secretion of gastric acid in pigs, and it has a very strict role in the colonization of pathogenic bacteria in the intestine, thereby limiting the growth of pathogenic bacteria in the intestine and promoting animal health. Increasing sow reproductive performance Addition of cellulose to the diet of pregnant sows can increase the reproductive performance of sows. On average, each sow produces 1.5 more sows, and the production of sows is smaller than that of sows fed fiber. The growth rate of the piglets will increase by 20%. Cellulose requirements for pigs at different physiological stages Different physiological stages of pigs have different digestibility of cellulose, and appropriate ratios should be added to the diet according to different physiological stages and physiological characteristics of the pigs. The crude fiber content of pigs at different physiological stages is 6%~8% of boars, 8%~12% of pregnant sows, 7% of nursing sows, 6.5%~8% of reserve pigs, and 3%~4% of weaned pigs. 6% to 7% of finishing pigs. Raw materials feeding pig skills Breeding boars, due to frequent breeding, consume more energy and nutrients, so the nutritional level of the diet is higher, about 12.97 MJ per kg of diet, crude protein 16% to 18%, calcium 0.7% Phosphorus 0.6%. During the breeding period, in addition to increasing energy to supplement the calories consumed by mating, it is necessary to increase the full price of amino acids, especially lysine, methionine and arginine. These amino acids are closely related to the improvement of semen quality. Therefore, some animal protein feed such as fishmeal should be added as far as possible. Reference formula one corn 32%, barley 26%, soybean meal 18%, bran 16.3%, fish meal 5%, stone powder 1.2%, salt 0.5%, additives 1%. The dietary level of crude protein was 17.8% and digestive energy was 12.68 MJ per kilogram. Reference formula II corn 43%, barley 27%, bean cake 10%, bran 7%, fish meal 6%, hay powder 2%, bone meal 1.5%, salt 0.5%, additives 1%. The dietary level of crude protein was 16.5% and digestive energy was 12.59 MJ per kilogram. In the non-breeding period, the nutrient consumption is less, just keep its normal condition. Therefore, in the energy and protein levels, can be properly reduced, per kilogram of diet containing about 1.92 MJ digestive energy, crude protein 12%, calcium 0.66%, phosphorus 0.53%. Reference formula 3 corn 26%, barley 41.5%, rice 10%, soybean meal 5%, barley 15%, bone meal 2%, salt 0.5%. The dietary level of crude protein was 11.8%, and digestibility was 12.13 kJ/kg. Raw material feeding pig matters needing attention Pigs are rough-tolerant animals. Most of the roughage can be eaten, but the following issues should be addressed when feeding: In summer, pigs should be protected from rancidity and feed on pigs with rancid feeds. After eating, the pigs are lethargic and do not like to eat, affecting growth, and they will die if they become poisoned. Therefore, pigs cannot be fed with rancid feed. In the summer, we must pay attention to the storage of feedstuffs. We must store them in a dry, well-ventilated place. Now we must mix them with fresh water. We should not use them for long-term preservation to prevent rancidity. Distiller's grain feed Pigs should not overdose distiller's grain containing alcohol and acetic acid, and are generally not suitable for overfeeding. Because of the large amount of feeding, it is not only easy to cause poisoning, but it also causes constipation due to the imbalance of nutrition contained in alcohol. Normally, the normal dosage is not more than 50% of the daily feed amount, and some other feeds should be used to make up for the deficiency of nutrients. Pregnant sows and nursing sows should not feed vinasse. Remaining soup leftovers feed pigs to pig farmers with residual soup leftovers is more common, but the leftover soup should not be fed to young pigs, and the young pigs can easily induce diarrhea. Not suitable for breeding pigs, it is best to use their feeding pigs, but when feeding should pay attention to hygiene, to remove debris before feeding, the remaining soup to re-boil the cold and then feed to prevent poisoning and gastroenteritis The occurrence of disease. The vegetable feedstuff to feed the pig should be like the scientific vegetable feedstuff pig more like to eat, but should pay attention when feeding science. Don't overdo it when you feed. Overdose can cause diarrhea or cause gastrointestinal problems. When cooking, please pay attention to methods, such as preventing the production of nitrite and the like when the beet leaves are cooked, so as to prevent poisoning after cooking. Feeding pigs for substitute feeds must be proportioned With the development of the feed market, some surrogate feeds have replaced some of the food feeds. Such as feather powder, bone meal, all kinds of fine feed, full price feed, special feed, etc., must have a certain proportion in the feeding of pigs, scientific feeding, otherwise it will be counterproductive and worthless.
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