Prevention and Control Countermeasures of Toxoplasmosis in Swine

Toxoplasmosis(Also called toxoplasmosis)It is a parasitic disease caused by Toxoplasma gondii of the genus Sarcocystis, Toxoplasma gondii and Toxoplasma gondii. The main clinical features are fever, constipation, dyspnea and central nervous system diseases, white foam in the nostrils, abortion of pregnant sows, stillbirth, pathological examination is characterized by severe pulmonary interstitial edema, lung, liver, stomach, lymph node enlargement. Mainly weaned piglets and adult sows with multiple infections. The general occurrence and prevalence are not seasonal, and typical lesions can be examined according to clinical features and pathological examination combined with laboratory tests.(Stained pig ascites, pericardial fluid smear staining, oil microscope found crescent-shaped Toxoplasma gondii body)Determine the occurrence of this disease.

According to the disease census statistics, since.1955In addition to Tibet, other provinces, municipalities and autonomous regions have different degrees of occurrence and prevalence. Swine toxoplasmosis in Beijing was first discovered in1971year, a local epidemic. In severe cases, the whole group of disease, the mortality rate can be as high60%Above. Toxoplasma gondii needs to complete the whole development process in two hosts to survive, of which cats are the ultimate host. Previously, Toxoplasma gondii had to survive and develop in the intermediate host, namely mammals, birds, reptiles, fish and humans, which can lead to host human and animal disease. Not only endanger the production of livestock and poultry, infected with diseased livestock and poultry and their products once into the market, poor food hygiene management, but also cause human infection. From1985Years later, due to the use of sensitive drug treatment, the disease was gradually controlled in our city. However, outbreaks and epidemics are still reported in different parts of the country. according to relevant statistics,2004Toxoplasmosis was one of the swine diseases in Beijing. Especially with the increasingly active introduction of various animals and their products in our city, if effective measures are not taken to prevent them, it will not only directly threaten the carnivorous safety of the citizens, but also face the possibility of an outbreak. The capital pig industry has a greater potential threat. To this end, the author proposes the following measures to prevent and control swine toxoplasmosis for the Beijing suburb farms.(Household), community and related people reference.

1. Daily management and preventive measures

1.1 Pig farms and pig farms should keep the internal and external environment clean and adhere to regular disinfection.

1.1.1 Disinfection of empty piggery: You can choose a slightly irritating disinfection drug, such as the use of formalin fumigation or flame disinfection methods. But the concentration of the drug should not exceed the standard concentration is too large, at the same time should do a good job of disinfection personnel protection. Available2%caustic soda,1%~3%Spray lime water on the ground and walls.

1.1.2 Piggery disinfection: disinfection should pay attention to the choice of irritation and toxicity are low disinfectant, drug concentration must meet the standard use concentration. At present, it has been proved through experiments that some of the following disinfectants can be used as disinfection with animals: the concentration of blue light disinfectant is200~300The drug is basically non-irritating and toxic.;Use concentration of sodium hypochlorite0.2%, should not exceed0.3%The use of concentration;The use concentration of Xiaoteling is1:800~1000;The use concentration of disinfectant is1:600~800;the power of iodine,PVIodine use concentrations100×10E-6;Peracetic acid is used at a concentration0.2%.

It is recommended that medium and large pig farms purchase larger and medium-sized sprayers as needed, and small and medium-sized sprayers can be used by small farms. These types of sprayer brand more, imported and domestic have a variety of types, in the purchase should pay attention to the machine should be equipped with multi-use nozzle. The size of the droplets sprayed by the general spray nozzle should be30~50Micron. The size of the droplets sprayed with spray disinfection should be.100micron or above. Both domestic and imported flame sterilizers can be used.

1.1.3 Disinfection of the large environment in the field: drugs with slightly larger irritation can be selected, but the concentration of drugs should not exceed the standard concentration. At the same time should do a good job of disinfection personnel protection. In order to ensure the disinfection effect, the animal feces, all kinds of animal excrement, secretions and other debris in the environment should be carefully cleaned before disinfection, especially the roads in the field(Including clean and dirty roads)Clean up. At the same time, these wastes should be collected together with feces to carry out accumulation and sealing fermentation treatment. Generally required monthly4~5once thoroughly disinfected.

Available2%caustic soda,1%~3%Lime water spray on the ground and sports ground.

Disinfection of the imported disinfection pool in the field area: for vehicle disinfection, the length of the pool is required to be two circles long of the wheel and have a certain depth. The choice of drugs should be efficient, rapid, long maintenance time, and regular replacement, you can choose caustic soda, chlorine preparations, etc.

Keep the feed, drinking water and field utensils clean and regularly disinfect.

1.2 Cats and dogs are prohibited from being raised in breeding areas and pig farms, and regular deratization work is done carefully. To prevent the invasion of birds and insects, to avoid cats, rats and other animals and pigs and feed contact and its environment, drinking water pollution.

1.3 As long as the introduction of breeding pigs and other pigs are strictly quarantined and isolated, serological or allergic methods are used to check and regularly quarantine the pigs, and timely drug prevention, treatment and purification are carried out.

1.4 Pay attention to cold and warm, heatstroke prevention and cooling, improve the feeding environment and strengthen feeding management.

1.5 It is forbidden to feed pigs with waste such as swill.