Paying attention to grazing skills, rational drug use and preventive deworming are the basic strategies to prevent cattle and sheep from being infected with parasitic diseases when grazing.
Pay attention to grazing skills. Freshwater snails are intermediate hosts of many parasites. Cattle and sheep are not susceptible to parasitic diseases as long as they can't eat freshwater snails.
Therefore, the primary strategy to prevent parasitic diseases is not to graze cattle and sheep in the breeding ground of freshwater snails, mainly to avoid low-lying areas with frequent water accumulation, ponds, canals and slow-flowing rivers, and try not to let cattle and sheep eat aquatic plants when grazing. Aquatic plants can be harvested, silaged or cleaned before feeding.
Don't eat grass in the morning, evening or after rain.
Cattle and sheep should avoid drinking unclean water, and try to let them drink clean well water after returning to the house in the afternoon.
To prevent tapeworm infection, don't eat grass in the breeding ground of mites.
Driving weaned lambs and calves to pastures where ruminants have not been grazed for two years can also effectively prevent lambs and calves from being infected with tapeworms.
Rational use of drugs In order to effectively eliminate the intermediate host, we can spray 0.02% copper sulfate solution or niclosamide solution in the breeding ground of fresh water snails, and add 2.5 grams per 1000 kg of water.
Cattle and sheep are most prone to myiasis in autumn. In order to kill and drive away adult flies, cattle can be sprayed with 4%~5% dichlorvos solution, 65,438+0 times every 10 day, and 1% dichlorvos ointment can be applied around the nostrils of sheep, 65,438+0 times every 4~5 days. At night, you should spray dichlorvos or other pesticides around the pens, and you can also light mosquito-repellent incense to drive away mosquitoes and flies.
Preventive deworming can be arranged for grazing cattle and sheep three times a year: the first time before grazing in early summer, the second time after grazing in autumn and the third time after grazing.
For trematodes and tapeworms, thiacloprid and praziquantel can be selected, and the dosage per kilogram of body weight is 40 ~ 60mg for cattle and 80 ~ 4O~6O mg for sheep.
Oral praziquantel, 50 mg for cattle and 50 ~ 60 mg for sheep per kilogram of body weight.
For nematodes and fly maggots, abamectin or ivermectin can be injected intramuscularly at a dose of 0.2 mg per kilogram of body weight.
After deworming, collect feces and pile them up for fermentation.