Anti-Frost injury Technology of Dairy cows in Winter

Raising dairy cows in cold season is very easy to cause freezing injury under the action of low temperature for a long time. It is common for cattle to be tied up in the cold wind outside the ring for a long time or to raise cattle in an open circle and keep them free in cold weather. Even in captivity, if the environment is damp and cold, cold wind attacks and hungry cattle can cause frostbite, especially exposed ears, nose, tail, limbs, breasts, nipples, vagina, scrotum, foreskin and other terminal parts, are more vulnerable to frostbite. But it is often ignored by people.

The harm of frostbite to cattle

The harm of superficial frostbite after the skin is frozen, the blood vessels strongly contract, so that the tissue ischemia, the skin from pale to blue-purple. After rewarming, the blood vessels dilated, the skin was congested, the frostbite site was burning and itching, and there was red, swollen and hot pain. In severe cases, blisters of different sizes are frozen, and the blisters are transparent and painful. Two or three weeks later, the blisters dry up and form a dry scab. When the scab falls off, there is a new skin to cover the wound.

The harm of deep frostbite the whole layer of skin and subcutaneous tissue is frozen and necrotic, the frostbite is deep to the bone, necrotic fester, blackening and drying, and finally the necrotic part is separated from the healthy tissue, and the necrotic part decays.

Treatment of frostbite

Treatment of superficial frostbite after the occurrence of minor superficial frostbite, do not immediately bake by fire or soak in hot water. Can be applied with spirits and chili peppers several times a day. Or massage the skin with camphor alcohol or boric acid alcohol or ultraviolet radiation. If it occurs in the limbs, you can use folk therapy, chili, eggplant straw, dried ginger, etc. add water to boil 10 times, the water temperature drops to 45 degrees fashion into the bucket, more than 10 minutes at a time, twice a day. If there are blisters in the frostbitten area, you can drain them with a disinfection needle, apply them locally with 30% boric acid, and then smear them with 10% sulfonated fish grease once a day. Apply Vaseline or lard when you have ulcers and wrap them with gauze. When the frostbite part is swollen, you can apply 1% iodine solution or camphor ointment, iodine glycerin and so on.

Measures should be taken as soon as possible to reduce tissue necrosis and prevent infection in the treatment of deep frostbite. When frostbite occurs, rewarm the frozen part as soon as possible, soak the injured limb in an iron bucket with warm water, heat it to 38 ℃ ~ 42 ℃ in 5 ~ 10 minutes, and raise the frozen part slightly to eliminate edema. Use antibiotics to prevent infection when frostbite is severe and deep. When frostbite is serious, Nufucaine can be used to seal, promote the necrotic tissue to fall off as soon as possible and make the wound heal early. When frostbite has infection, remove the necrotic tissue, disinfect and treat the wound.

Treatment of chilblain

Frostbite that occurs in the breasts, nipples, ears, nose and genitals should not be soaked or roasted in hot water. Because it is prone to necrosis before the blood vessels recover. For frostbite, alcohol cotton balls can be used to gently rub the skin slightly red, in order to promote blood circulation and remove blood stasis. If it has been ulcerated, the necrotic part can be removed and put on frostbite ointment to keep warm after disinfection to prevent heat loss.

Emergency treatment of frozen cattle

When the cow is frozen, especially the calf born in the open or the calf in the barn with poor heat preservation, it should be quickly carried into the warm room, scrubbed and massaged with warm water as soon as possible to promote blood circulation. At the same time, inject cardiotonic agents such as camphor water or coramine, and drink hot tea to the affected animals as soon as possible. When you can't drink, you can use the stomach administration tube to take liquor to make the affected animals warm. Glucose solution after raising the temperature with hot water can be injected when necessary for seriously diseased animals, and blood transfusion can be used for breeding animals with economic value.

Protection against bovine jelly injury

Cattle body protection should be strengthened in cold seasons. No matter go out for grazing or exercise, you can apply Vaseline, lard and other protection to the ends that are prone to frostbite, such as ears, breasts, nipples, etc. For lactating cows and dry cows, it is best to wear a cotton bra, the effect is excellent. When cows go out in winter, they should have appropriate activities to keep warm and activate blood circulation, and should not stand still for a long time.

In order to protect the safety of dairy cows through the winter, it is necessary to build thermal insulation cowhouses, keep cattle, reduce heat dissipation, feed balanced and nutritious diets at full price, increase 10% energy and 5% grease feed, feed cattle full, and drink warm water to enhance cold resistance.

Timely treatment for cattle with freezing injury should be treated in time. No matter which method of treatment is used, attention should be paid to the warmth of the barn and frostbitten parts of cattle to prevent re-freezing.