Common feeds that easily poison pigs when eaten (Part 1)
What are the common feeds that easily poison pigs? (1)
I. Large piles of succulent vegetables, sugar beets and green grass that heat up and rot
When green feed is piled for too long, becomes moldy and spoiled, or is boiled and left to stew overnight in a pot or vat, the nitrate in it is reduced to nitrite. When green feed is cooked and left to stew in a pot for 24 to 48 hours, its nitrite content can reach 200-400 mg/kg (the lethal dose is about 70-75 mg/kg body weight), so it should be fed fresh or fed immediately after cooking, and must not be left to stew in the pot.
II. Fresh tender sorghum seedlings, corn seedling leaves and fresh flax leaves
These feeds contain cyanogenic glycosides. After feed containing glycosides is piled, moldy, or withered by frost, under the action of special enzymes in the plant, the cyanogenic glycosides are hydrolyzed and release hydrocyanic acid. The ratoon seedlings after corn and sorghum harvest are even more harmful after frost. Hydrocyanic acid and cyanide are highly toxic, and even a very small amount can cause pig poisoning.
III. Sprouted potatoes and their stems and leaves
The tender green stems and leaves, outer skin, and especially the germ all contain solanine, with the highest content in the germ of the potato tuber and in the skin that has turned purple-blue after exposure to sunlight. Solanine can stimulate inflammation of the intestinal mucosa, and after entering the blood, it can damage the medulla oblongata and spinal cord, causing toxic paralysis. In production, potato germs are prohibited as feed. For sprouted, partially rotten, or green-skinned potatoes, the germs, green skin and rotten parts should first be cut off, washed clean, cooked and then fed.
IV. Sweet potatoes with black spot disease or the flour slurry ground from sweet potatoes with black spot disease
⟧NL⟧ Sweet potatoes are most suitable for feeding pigs; pigs like to eat them both raw and cooked, but the protein digestibility of cooked feeding is almost 1 times higher than that of raw feeding. Sweet potatoes with black spot disease contain fungal toxins, and pigs will be poisoned after eating them. When feeding, first cut off the black spots and wash clean.
V. Rawsoybeansandsoybeanmeal
Legume feeds contain antitrypsin, saponin, urease, etc. When fed raw, they affect palatability and feed digestibility, and even cause diarrhea, affecting weight gain, sosoybeanmeal should be fed cooked.