According to the purpose of deworming, it is divided into two types: therapeutic deworming and preventive deworming. Among them, therapeutic deworming is mainly a disease treatment measure for livestock and poultry diagnosed with parasitic diseases. Insect disease livestock and poultry recover health, to achieve the purpose of disease treatment. Preventive deworming refers to reducing the number of parasites in livestock and poultry or in the breeding environment to avoid parasitic disease infection in livestock and poultry.
There are many kinds of parasitic infections in livestock and poultry breeding, and they are widely distributed in the breeding environment. The substances required for the growth, development and reproduction of parasites in livestock and poultry are mainly from the body of livestock and poultry. At the same time, the secretion and excretion of parasites The decomposed substances and dead parasites have toxic effects on livestock and poultry, and parasites deprive livestock and poultry of nutrients through absorption, causing chronic diseases in livestock and poultry, and causing serious damage to the production performance and body health of livestock and poultry. Negative impact. Some parasites also parasitize into the human body through livestock and poultry, posing a threat to human health.
Commonly used veterinary medicines
Organophosphates are mainly organophosphorus compounds with low toxicity, which are often used as insecticides and anthelmintics in agricultural production. Common organophosphates include dichlorvos, trichlorfon, etc., of which trichlorfon is in It is widely used in livestock and poultry breeding. Trichlorfon is a broad-spectrum anthelmintic. In cattle breeding, it has good killing and deworming effects on most parasites in the digestive tract of cattle, such as roundworms and nematodes. In actual breeding and production, trichlorfon can also be used externally, which has a good killing and repelling effect on most parasites on the surface of livestock and poultry, such as mites, lice, and ticks. When trichlorfon is taken orally, it is usually added to the feed, and the dosage of 80-100 mg/kg is appropriate. When trichlorfon is used externally, it can obtain good parasite control effect by spraying or smearing on the surface of livestock and poultry at a concentration of 1%. Trichlorfon is highly toxic, and it is necessary to strictly pay attention to the dosage during the use of livestock and poultry breeding to avoid negative effects on the health of livestock and poultry. It is forbidden to use trichlorfon in livestock and poultry during pregnancy.
Amidine compounds are a common topical anthelmintic drug in livestock and poultry breeding, with broad-spectrum insecticidal effects. At present, the most common one is amitraz, which is a crystal that is insoluble in water. It is usually used as an emulsion, such as amitraz, etc., which has a good killing and repelling effect on mites, lice, ticks and mosquitoes on the surface of livestock and poultry. Amitimidine emulsion can mainly inhibit the activity of parasite eggs, and at the same time has no effect on livestock and poultry bodies and human beings, and good results can be obtained by spraying, medicated bathing and other methods in application. Amitimidine emulsion is usually made at 0.05% concentration to obtain good parasitic control effect.
Imidazoprothiazoles are also a kind of drugs for the prevention and control of parasitic diseases in livestock and poultry breeding at this stage, mainly levamisole. Nematodes, roundworms and other parasites have a good expelling effect. Levamisole is usually used by injection or oral administration in livestock and poultry breeding, and the dosage should be 7.5 mg per kilogram of sick animals. The injection can be intramuscular or subcutaneous. After injection, levamisole has a certain stimulating effect on the local tissue injected by livestock and poultry, which may lead to mental depression and coughing in sick animals.
There are many kinds of fenbendazole anthelmintics, which are low toxicity and high efficiency anthelmintic drugs with broad-spectrum effect. Albendazole is the most widely used in livestock and poultry breeding, followed by fenbendazole and mebendazole. There are certain applications of azoles in livestock and poultry breeding, and some drugs are used as compound preparations in actual livestock and poultry breeding. Benzimidazole drugs have a good control effect on nematodes, flukes, tapeworms and other parasites in livestock and poultry breeding, and mainly have a good inhibitory effect on the eggs of these parasites. The application of albendazole in cattle breeding should be 10-30 mg per kilogram of sick cows. Albendazole has poor palatability. It should be added to the feed and used in small amounts and multiple times to avoid the intake of livestock and poultry. cause negative effects.
Other anthelmintic drugs
The main source of infection of hydatid in livestock and poultry breeding is dogs. After the livestock has been slaughtered, the offal is fed to the dogs. Dogs can become infected by eating viscera containing cysts, and their excrement can contaminate water, soil, and plants. When cattle and sheep and other livestock animals eat grass and water contaminated with Echinococcus eggs, the eggs will develop cysts in the liver, lungs and other organs. This creates a natural cycle between terminal and intermediate hosts. Regular deworming of dogs is an effective way to avoid the spread of hydatid disease in livestock and poultry farming. Praziquantel at 50mg/kg, orally, has a good deworming effect, is safe, and has no side effects. For ectoparasites, it can be diluted with drugs such as Beite, Phosphorus EC, Erqinong (Mitejing), Dimethicone, Pamiphos, Myofosphos, Refined Malathion, Phox, and Xiaochongjing, etc. Rub, or medicated bath, once a year in spring and autumn.