Common anthelmintics include ivermectin and albendazole. Personally, I think albendazole has a better repellent effect, and I use it to drive sheep. The method of deworming is: weaned lambs and big sheep should be given 10~ 15mg/kg body weight and directly mixed with sheep feed to feed themselves. Pay attention to the separation of lamb feed and big sheep feed when feeding. Besides, in vitro deworming. The most effective way to repel insects in vitro is to give sheep a medicated bath. We choose sunny and windless weather (it is better to cut the ewe's hair first, which is more conducive to insect repellent). First, put the mutton into the prepared medicinal bath. The liquid medicine can be 0.5% trichlorfon water solution. After the lamb washes the medicated bath, add the liquid medicine, and then wash the big sheep in the medicated bath. Note: sheep with trauma can't take medicine bath; Sheep should stop eating grass before medicated bath, but should provide enough water. Every spring from March to April, lambs should be deworming once to eliminate parasites inside and outside the sheep, so that 100% of nutritional energy can be used for their own weight gain and rejuvenation.

Lambs lack selenium, are prone to myopathy and have high mortality; Selenium deficiency in ewes can easily lead to placental retention. Because selenium helps sheep to utilize VE, it is best to use selenium and VE at the same time. Sodium selenite VE injection is commonly used to supplement selenium, and the dose is 0.5~ 1.0 ml per animal. Magnesium is an essential substance for bones, which is in short supply and prone to nervous tremor, that is, hypomagnesemia, commonly known as grass shock. Grass has a low magnesium content in spring, so it can be drunk by adding 2~5g magnesium sulfate or magnesium acetate into water. Magnesium supplementation is not needed in other seasons.

Sheep need 2 ~ 3 kg of water per kloc-0/kg of dry matter on average. Therefore, it is necessary to supply enough clean drinking water and ensure drinking water 2~3 times a day. But you can't drink ditch water and ditch water to avoid parasite attack and poisoning. In spring, sheep's physique is poor, and the grass is full of water, which is easy to swell up. Therefore, we should also fill the grass and feed it as usual. In spring, sheep should pay attention to stay away from the newly sown land and the edge of wasteland to prevent sheep from being poisoned by eating coated seeds, grass contaminated by pesticides and fertilizers, corn and sorghum seedlings.

We should focus on epidemic prevention, vaccination and regular disinfection of sheep farms. Disinfectants should be new disinfectants with broad spectrum, high efficiency and low toxicity, such as Weikang, Bactericide, DaoPoison, etc. We must insist on early prevention and early treatment without disease. For foot-and-mouth disease, sheep plague, sudden gangrene, enterotoxemia and other harmful diseases, immunization should be arranged reasonably according to the immune characteristics of various vaccines.