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:
First, improve the nutritional level of male rams. Although the number of species of rams is small, the value of species is high, and it has a great impact on future generations. It requires a high level of rearing 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 ration of 80-90 kilograms of rams during the breeding period is roughly: 1 kilogram of concentrate, 2 kilograms of hay or hay, 1 to 1.5 kilograms of carrots, 15 to 20 grams of salt, and 5-10 grams of bone meal. The concentrate feed and roughage feed can be supplied in 2-3 times, and 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 1-2 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 opportunity for the best mating ewes. It is necessary to grasp the ewes' estrus period and achieve timely breeding. After the estrus, the ewes showed reduced appetite, disturbed twats, flushing swelling of the vulva, vaginal discharge, and frequent tailing. Ovulation begins 30-40 hours after the estrus of the oestrous ewes. At this time, breeding is most susceptible to the fetus. The mating of the ewes 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. After the ewes are fertilized, if they are improperly reared and managed, they can easily cause premature labor 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 5-6 weeks before the ewes are born, the amount of concentrate 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 epidemics. Autumn is the season with multiple epidemics and epidemics. In addition to using levamisole or albendazole to fight insects in the flock, it is also necessary to immunize with the epidemic (microbial) vaccines to prevent the occurrence of infectious diseases.
Fifth, do a good job in the cleanliness of the sheep house. Frequent cleaning of feces and dirt in the manger (such as dirt, stones, leftover grass roots, etc.) should be done 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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