In the process of raising pigs, we will inevitably find that the diseases of pigs are really diverse. It can be said that all kinds of diseases are available. For example, this pig toxoplasmosis, I believe many people have heard about it for the first time. So how is this pig toxoplasmosis quarantined? How to deal with pigs with this disease? Let's take a look!

Porcine toxoplasmosis

Porcine toxoplasmosis is a zoonotic infectious disease caused by Gongdi Toxoplasma. This disease is most common in pigs. If a person is infected with this disease, it is usually caused by wound contact or raw food infected with the disease. It is necessary to do a good job in pre-slaughter quarantine and post-mortem inspection of pig toxoplasmosis in designated slaughterhouses, which is of vital importance to the development of the aquaculture industry and human health.

1. Pre-slaughter quarantine

Pigs with swine toxoplasmosis have elevated body temperature of 41-42 ° C, decreased appetite or abolished, runny nose, cough or dyspnea, anemia, conjunctival hyperemia, etc., similar to the clinical symptoms of swine fever and pig erysipelas, but There are no large bleeding spots on the skin.

2, post-mortem inspection

The meat of patients with acute toxoplasmosis is incompletely bleeding, and the skin of the whole body is purple-red. There are yellow clear effusions on the skin of the ears, neck, lower abdomen, limbs, buttocks and tail.

(1) swollen lymph nodes, induration, mainly seen in mesenteric lymph nodes, gastric lymph nodes, hepatic lymph nodes, lung lymph nodes, slightly swollen to large eggs, especially mesenteric lymph nodes, generally in the posterior segment of the jejunum can be seen 3 to 5 or more mesenteric The lymph nodes are swollen and indurated. There is a hard and brittle feeling when cut. The cut surface is brick red or gray-red. When the infection is acute, the mesenteric lymph nodes are swollen, the cut surface is yellowish white, the surrounding area is yellowish, and a large amount of slurry is exuded. There is edema between the nearby tissues.

(2) The liver is generally more turbid, with small punctiform hemorrhage or blood stasis, hepatomegaly becomes brittle, and there are yellow-white or gray-white necrotic spots of different sizes.

(3) Incomplete pulmonary retraction, often hyperemia, edema, interstitial dilatation, grayish white, acute infection, lung hyperemia, edema, sometimes bleeding, necrosis and compensatory emphysema, a large amount of fluid outflow in the trachea, tracheal Contains red foam.

(4) When the spleen is acutely infected, it is often swollen 2 to 3 times, color brown illusion: or sakura red, the surface often has a number of large hemispherical protrusions of soy bean, the cut surface is blurred, and sometimes yellow-white necrotic lesions are visible.

(5) The kidneys generally only see reddish color, occasionally see turbidity and a few bleeding spots or bleeding spots, sometimes see bleeding spots near the auricle or coronary sulcus.

3, diagnosis

(1) The clinical symptoms of the disease and the pathological changes after slaughter are very similar to some pathological changes of swine fever and swine erysipelas. Therefore, the pathological changes of the spleen are often used in the differential diagnosis (the surface often has several soybeans). Large hemispherical protrusions, combined with other pathological changes to make a diagnosis, not to be confused with swine fever, so as not to be misdiagnosed, but also for laboratory diagnosis.

(2) Laboratory diagnosis is generally carried out by smear microscopy. After smearing with muscles, organs or lymph nodes, it is naturally dried, fixed with methanol for 10 min, stained with 25-fold diluted Giemsa dye solution for 40 min, with neutral distilled water. Rinse and examine with a microscope of 800 times. Microscopic examination showed a variety of forms of Toxoplasma gondii, which were obtuse at one end and more curved at the other end. The other end was obtuse and the other end was sharp, but it was straight, some arched, or Bean-shaped, some ends are obtuse, curved, some are hammer-shaped, some are rod-shaped, and the shape is different.

4, processing

(1) The carcass and internal organs of patients with acute swine toxoplasmosis are destroyed.

(2) After the diseased organs and lymph nodes are cut off for industrial use or destruction, the body and other organs are treated at high temperature.

The above is about the introduction of swine toxoplasmosis. Have you encountered this kind of swine disease? Then how do you deal with it? Welcome to share!

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