Autumn is the best breeding season for sheep. At this time, the ewes are generally estrusful, the rams have strong sexual desires, coupled with the cool autumn weather, suitable climate, rich forage resources, good sheep's lyrical condition, and lambs produced in the autumn with the ewes. The physique is better than the lambs produced in other seasons. The lambs that were born that year were fattening and just before the Spring Festival to sell, the timing of sales was good, and the economic benefits were high. How can we do a good job in sheep's autumn management and breeding breeding? The key to the following five points:
I. Raising the nutritional level of rams Although the number of rams is small, the value of the species is high, which has a great impact on future generations and requires a high level of husbandry and management. The rams should be kept healthy and healthy for many years, and their sensation should be good without over-fertilization so as to ensure their sexual desire is strong and their semen quality is good. The forage fed to the rams should be diversified and scientifically matched. The diets for rams weighing 80-90 kg during the breeding period are roughly: 1 kg of concentrate, 2 kg of hay or wild grass, 1 to 1.5 kg of carrots, 15 to 20 grams of salt, and 5 to 10 grams of bone meal. The concentrate feed and roughage feed can be supplied in 2 to 3 batches. The rams in the breeding period should feed some fodder at night. The rams should exercise regularly during the breeding period and can exercise for about half an hour each day. During the busy period of breeding, rams should be fed 1 to 2 fresh eggs every two days. In the later period of mating, the amount of feed for concentrates should not be reduced immediately. After feeding for a period of time, it should be reduced in appropriate amounts and gradually transferred to the level of non-breeding animals.
Second, seize the best breeding time for the ewes to grasp the ewes estrus period, so that timely breeding. After the estrus, the ewes showed reduced appetite, disturbed twats, flushing swelling of the vulva, vaginal discharge, and frequent tailing. Ovulation begins 30 to 40 hours after the oestrus. At this time, breeding is most susceptible to the fetus. The mating of the ewe is also relatively smooth, especially at the end of estrus. However, in the production practice, two breeding methods are usually adopted, ie, after the first breeding, the estrus should be bred for the second time after 12 hours, which can increase the gestation rate of the ewes.
Third, to strengthen the pregnancy ewes miscarriage and management Ewe mating after conception, such as improper feeding and management, easily lead to premature birth and miscarriage. It is forbidden to feed sheep with moldy or poisonous forages. It is strictly forbidden to allow fasting drinking. It is forbidden for sheep to be frightened or have severe movements such as sprinting or skipping furrows during grazing, especially when the sheep enters or enters the gates or feeds. Prevent them from squeezing each other. For ewes that have habitual or congenital abortions, it is advisable to inject veterinary miscarriage drugs for prevention within a certain period of time. In the pre-pregnancy stage of the ewe, the fetus develops slowly and there is no obvious increase in the required nutrients, but it is required that the ewe can continue to maintain good sensation. Diets can be based on specific circumstances, and can generally consist of 50% alfalfa, 30% hay, 15% silage corn stover, and 5% concentrate feed. Within 5 to 6 weeks before the ewes' labor, the amount of concentrate feed can be increased to about 18% of the diet. At the same time, the ewes should exercise moderately in the later stages of pregnancy, and pay attention to adding appropriate amounts of vitamin A and vitamin D.
Fourth, do a good job of prevention and control of epidemic disease in the autumn is the epidemic and multiple epidemic seasons, in addition to the use of levamisole or albendazole to the flock to the deworming, but also immunization (bacteria) vaccine immune, to prevent the occurrence of infectious diseases.
Fifth, do a good job in the cleanliness of the sheep house. Always clean the feces in the sheep house and the dirt in the feed tank (such as dirt, stones, and leftover grass roots, etc.) to keep it dry and clean. To be regularly disinfected with 2% pyrogenic alkali solution, 3% stone carbonate or 2% formalin. During the cold winter months, the sheep house needs to be maintained and plugged into the vents on the north side to keep the temperature of the sheep house above 2°C. In addition, the sheep must be brushed regularly to enhance blood circulation and improve its resistance to disease.
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