Pig mold symptoms eight legs

Mycotoxin is a toxic secondary metabolite produced by the growth and reproduction of some molds on the substrate.

The toxin produced by mold is limited to a few toxin-producing mold strains.

Different molds can produce the same mycotoxin, while one mold can produce several mycotoxins.

According to the growth conditions, mold can be divided into field mold and storage mold.

Field mold refers to wild strains such as Fusarium, Penicillium and ergot, which are usually infected during grain growth.

Storage mold mainly refers to the mold produced during the storage of feed or raw materials, mainly Aspergillus.

Common mycotoxins and their harm to aflatoxin

Aflatoxin is mainly produced by Aspergillus, and other Aspergillus, actinomycetes, Fusarium and Penicillium can also produce aflatoxin.

All animals are sensitive to aflatoxin, but the sensitivity of different animals is quite different.

Piglets are the most sensitive among domestic animals.

The low concentration of aflatoxin pollution leads to the decrease of feed intake, feed conversion rate and immune suppression.

Sows are fed with feed contaminated with aflatoxin, which will be transmitted through breast milk, causing growth retardation and even death of piglets.

In addition, aflatoxin can also interfere with the detoxification function of the liver and damage the immune system.

Ochratoxin

Ochratoxin is a toxin produced by Ochratoxin, which can be divided into type A and type B..

Ochratoxin A is very toxic, mainly affecting the kidney and liver of pigs.

Ochratoxin can cause mental depression, anorexia, weight loss, digestive dysfunction, enteritis, even diarrhea, dehydration and polyuria in pigs, accompanied by proteinuria and diabetes.

Pregnant female animals often suffer from uterine mucosal bleeding and abortion.

The pathological changes after poisoning are mainly kidney, which are hypertrophy, grayish white, uneven surface, blisters, renal parenchyma necrosis and renal cortical interstitial cell fibrosis.

The function of proximal convoluted tubule degenerated, the permeability of renal tubule became worse, and the concentration ability decreased.

vomitoxin

Vomiting toxin belongs to Trichosporaceae, which is mainly produced by Fusarium graminearum, Fusarium oxysporum and Fusarium moniliforme.

Its harm is mainly to cause vomiting in pigs and reduce feed intake.

Vomiting toxin is also a strong immunosuppressant, which can inhibit the synthesis of protein in pigs, affect fast-growing tissues (such as skin and mucosa) and immune organs, and reduce the resistance of pigs.

Zearalenone

Zearalenone (f2 toxin), produced by Fusarium graminearum, is a kind of mycotoxin with estrogen-like effect, and its clinical symptoms vary with infection dose and age. The reproductive system is the most influential part of zearalenone on pigs. Low concentration will induce feminization, while high concentration will interfere with ovulation, conception, implantation and embryo development. It can cause wig infection, vaginal prolapse or proctoptosis in gilts or gilts. The toxin can cause miscarriage and stillbirth of pregnant sows and swelling of splayed legs and vulva of newborn piglets.

T-2 toxin

T-2 toxin is produced by Candida, which can directly damage skin and mucosa. The main hazards to pigs are anorexia, vomiting, growth stagnation, emaciation, skin and mucosa necrosis, gastrointestinal dysfunction, reproductive and neurological dysfunction, and decreased immune function. In addition, it can also affect the synthesis of protein by affecting the synthesis of dna and rna and blocking the initiation of translation. T-2 toxin can cause thymus atrophy and intestinal lymph node necrosis. Destroy the integrity of skin mucosa. Inhibit the production of white blood cells and complement c3, thus reducing the immune function of the body.