Best breeding season for sheep
Autumn is the best season for breeding sheep. At this time, the ewes are generally in strong heat and the rams have strong libido. In addition, the autumn weather is cool, the climate is suitable, the forage resources are abundant, and the sheep’s condition is good. The physique is better than lambs produced in other seasons. The lambs born that year were fattened and sold just in time for the Spring Festival. The sales timing is good and the economic benefits are high. How can we do a good job in autumn management and breeding of sheep? The key to grasp the following five points:
Improve the nutritional level of the breeding rams to maintain a healthy breeding body condition for the breeding rams all the year round, with a good body condition but not too fat, to ensure that their sexual desire is strong and the quality of semen is good. The forages fed by the breeding rams should be diversified and scientifically matched. The ration for rams weighing 80-90 kg during the mating period is roughly: 1 kg of concentrated feed, 2 kg of alfalfa hay or wild hay, 1-1.5 kg of carrots, 15-20 g of salt, and 5-10 g of bone meal. Concentrated fodder and roughage can be supplied in 2-3 times, and the rams in the mating period should be fed some forage at night. Breeding rams should exercise regularly during the mating period, and can exercise for about half an hour a day. During the busy season of breeding, rams should be filled with 1-2 fresh eggs every two days. In the late stage of mating, the amount of concentrated feed should not be reduced immediately, but should be reduced after a period of feeding, and gradually transition to the feeding level of the non-breeding period.
To seize the best time for breeding ewes, we must master the estrus period of the ewes and breed them at the right time. After the ewes are in estrus, they show loss of appetite, disturbed screaming, flushing and swelling of the vulva, vaginal discharge, and frequent tail shaking. The ewes begin to ovulate 30-40 hours after estrus. At this time, the breeding is the easiest to conceive, and the breeding of the ewes is smoother, especially at the end of estrus. However, in production practice, the method of two breedings is usually used, that is, after the first breeding, those who are still in heat 12 hours apart, then carry out the second breeding, which can increase the conception rate of the ewes.
Strengthen the care and management of pregnant ewes. After the ewes are bred and conceived, improper feeding and management can easily lead to premature delivery and miscarriage. It is strictly forbidden to feed the sheep with moldy or toxic forages. It is strictly forbidden to allow the sheep to drink water on an empty stomach. It is strictly forbidden to let the sheep be frightened or make violent movements such as running or jumping ditch during the grazing. Prevent them from squeezing each other. For ewes with habitual or congenital miscarriage, it is advisable to inject veterinary anti-fetal drugs for prevention within a certain period of time. In the early stage of pregnancy, the fetus develops slowly, and the required nutrition does not increase significantly, but the ewe is required to continue to maintain good condition. The ration can be determined according to the specific situation, generally speaking, it can be composed of 50% alfalfa, 30% hay, 15% silage corn stover and 5% concentrated feed. Within 5-6 weeks before giving birth, the amount of concentrated feed can be increased to about 18% of the ration. At the same time, the ewes should have an appropriate amount of exercise in the later stages of pregnancy, and pay attention to adding appropriate amounts of vitamin A and vitamin D to them.
Do a good job of disease prevention and control Autumn is a season of frequent and prevalent diseases. In addition to using levamisole or albendazole to deworm the sheep, it is also necessary to inject the disease (bacteria) vaccine to prevent the occurrence of infectious diseases.
To do a good job of cleaning the sheep shed, it is necessary to frequently clean the feces in the sheep shed and the dirt in the feeding trough (such as soil, stones and leftover grass roots, etc.), and keep it dry and clean. To regularly use 2% caustic soda solution, 3% carbolic acid or 2% formalin disinfection. During the cold winter period, the sheep shed should be repaired and the vents on the north side should be blocked, and the temperature of the sheep shed should be kept above 2°C as far as possible. In addition, the sheep should be brushed frequently to enhance blood circulation and improve its disease resistance.
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