In rural areas, farmers who use compound feeds or feed concentrates with concentrated feed mixes are all “diagnosed†as feed poisoning and complain to feed manufacturers when they have edematous disease, and it is easy for farmers to have “edema diseaseâ€. It is a misunderstanding caused by feeding compound feed."
Edema disease causes
Climate mutations When the weather is mutated, the piglets are unable to adapt to the gastrointestinal cold due to a thin subcutaneous fat layer and poor body temperature regulation, resulting in dyspepsia, gastro-intestinal spasm, diarrhea, and decreased resistance to edema.
Sudden feeding of concentrated feed has a poorly developed gastrointestinal function. Substrate induction is required for the secretion and activation of various digestive enzymes. Suddenly feeding a large amount of feed with a high nutrient concentration before the piglet is 4 weeks old, it is easy to induce Edema disease.
Stress weaning, castration, vaccination, refueling, separation of mothers and children and other multiple stimuli occur at the same time, causing stress response to the pigs, reduced resistance to pathogens, induced edema disease.
Bad feed quality (1) Strong antigenicity of feed. Supplementation of sow feed supplements such as soy protein in soybean meal exceeds 50% of total crude protein or improper processing of soybean meal (or soybeans) and inadequate supplementation of sub-pig feeds. Soy protein antigens activate the local immune system of the intestine, such as If the piglet fails to produce immune tolerance, the immune system is often in a ready state. When the antigen is exposed again after weaning, an antigen-antibody immune response is generated, resulting in dyspepsia, diarrhea, and edema.
(2) The pH of the formulated feed is too high. When such feed enters the gastrointestinal tract, it neutralizes a large amount of gastric acid and lowers the activity of pepsin. Numerous nutrients enter the gut without being fully digested, causing the E. coli to rapidly proliferate, resulting in a breakdown of the flora of the gut flora and inducing edema.
(3) Feed protein is too high. Before 8 weeks of age, the pigs have poor digestion of plant Proteins. Feeding large amounts of diets with high protein content exceeds the gastrointestinal tolerance of the pigs, causing disorders of the gastrointestinal tract, resulting in the proliferation of pathogens and the production of toxins. Induced porcine diarrhea and edema disease.
Science to prevent edema
Scientific feeding pigs began to replenish water at the age of 1 day, eat 600 grams of feed before weaning, and use 7-day-old 14-day-old, easily digestible, suckling piglets containing whey powder 5%~20% to lure food. Pigs are immune to feed antigens.
Scientific weaning in rural areas, the majority of milk (sweet) pigs purchased by livestock owners are dominated by corn and soybean meal. They are not suitable for early digestion of pigs, and the conditions for conservation are poor. Therefore, we recommend the use of 35-day to 40-day-old weaning systems. . The earlier weaning, the higher the incidence of edema disease. Weaning work should be carried out gradually within 3 days to 5 days.
Eating less and more meals during the busy season in rural areas, livestock owners used to feed one or even several days of feed pellets into the feed trough at one time, allowing pigs to feed freely. In order to prevent edema disease, it is necessary to resolutely correct the above-mentioned practices so as to reduce the amount of hard-working time and increase the pig's ability to eat up to 80% of each meal, especially to control the gluttony and gluttony behavior of newly weaned pigs who suffer from hunger and good hogs. .
Prevent sudden replacement of feed When we conducted technical guidance in rural areas, we found that many farmers had great arbitrariness in feeding their pigs. The scientific approach is to gradually reduce the original feed and gradually increase another feed so that the refueling can be completed within 5 days to 7 days. This can prevent pig edema disease to a large extent.
Good quality diets with good quality diets are rich in protein, vitamins, and minerals, balanced, easily digested, contain organic acidifying agents and digestive enzymes, and have feed protein diversification and low protein antigenic feeds. Not necessarily high-protein, but it is really efficient and low-cost. It has been proven that lowering feed protein levels can effectively alleviate diarrhea in weaned pigs and reduce the incidence of edema disease.
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