How can autumn lambs survive the winter safely?

Estrus mating of sheep is mainly in spring and autumn, and the average pregnancy period is about 150 days, so spring and autumn is also a concentrated season for lambing. According to the investigation, the overwintering survival rate of autumn lambs is significantly lower than that of spring lambs.

1. Environment. Autumn lambs are in lactation or weaning period when overwintering, lack of green feed in winter, poor forage quality, insufficient milk of ewes, malnutrition, weak physique and poor disease resistance. And the long-term dry and cold climate in winter can easily cause respiratory tract infection in lambs, and many lambs die of pneumonia. Due to the cold climate, the treatment of feces and the replacement of bedding grass are not timely, the chances of lambs infected with Escherichia coli, Salmonella and Clostridium aerogenes are greatly increased, causing infectious gastroenteritis leading to diarrhea and dehydration and death.

two。 Female animal. The breeding age of sheep is generally 2 to 5 years old. He is too old. Female animals are prone to mastitis, lactation is reduced, the age is too young, itself is still in the stage of growth and development, lactation is insufficient. According to the survey, farmers generally have no control over the breeding age of ewes. The old ones are still breeding until the age of 7-8, and the younger ones begin to breed at 4-5 months, resulting in more weak lambs.

3. Administration and Management. Effective management can effectively reduce the mortality of lambs. In winter, many households are unable to manage effectively because of the influence of labor, knowledge and financial resources. Poor sanitary conditions, too high density of sheep in house feeding, too long time for grazing, and lack of exercise and light. Ewes and lambs with weak physique are not given supplementary feeding and special care. In order to improve the overwintering survival rate of autumn lambs, attention should be paid to the following work: planting green fodder in free land, supplementary feeding of ewes and lambs with silage straw, and proper addition of concentrate; grazing time should be sufficient to ensure adequate nutrition of lambs. The sheep in the shed should strengthen the exercise and change the bedding grass frequently. Timely removal of feces, adequate drinking water, appropriate sheep density, regularly spray disinfection with 10% lime water or 30% plant ash water, keep the sheep house dry, hygienic and warm, remove the causes of the disease, and reduce the incidence of lamb disease. Choose the breeding ewe, and the old and weak ewe will be eliminated resolutely. The sheep were bred for 6 and 12 months before they began to breed.