The best breeding time for pigs and sheep

First, the pig best breeding time of pig breeding all year round. The duration of estrus in sows ranges from 48 hours to 72 hours. Therefore, breeding at 24 hours after estrus and 10 hours at intervals can increase fertility rates and increase litter size. The estrus of sows is 15 days to 21 days in the same period. 113 days to 116 days during pregnancy. Breeding age: the initial allocation of local pigs is 8 months to 9 months of age, weight 60 kg to 70 kg; introduction or hybrid pigs from September to 10 months of age, weighing about 100 kg. Sows from the 3rd to the 8th have the best fertility. Second, the best cow breeding time of the year can be estrus, not affected by the season, but in spring April to May, autumn August to October as a breeding season. Duration of estrus in cows: cattle for 10 hours to 20 hours, water buffalo for 48 hours to 72 hours. Therefore, cattle should be bred 8 to 12 hours after estrus, buffalo should be in the afternoon of the second day after the estrus, or the afternoon of the third day of breeding. The estrus cycle of cows is: 18 days to 21 days for cattle and 18 days to 25 days for buffaloes. Pregnancy: 285 days for cattle and 305 days to 307 days for buffaloes. Breeding age: The initial mating cow is from 18 months to 30 months, and the cattle are slightly earlier than the buffalo. The best period for cows is 10 to 15 years. Third, the sheep's best breeding time Sheep generally have a fixed breeding season, but the human breed sheep often have no strict breeding season. The breeding season in the north is generally between July and January, and the peak season is from August to October. Sheep winter lambs are mated from August to October. Spring lambs are suitable for breeding from November to December. Milk goats are equipped from August to October. Oestrus estrus duration: 30 to 40 hours for sheep, goats 24 Hours ~ 28 hours, therefore, the sheep should be bred 30 hours after estrus, 12 hours to 24 hours after the goat estrus. The ewe estrus cycle is 15 hours to 21 hours. The period of gestation is 144 days to 155 days with an average of 150 days. Breeding age: Initial ewes are in December to 18 months, and goats are slightly older than sheep. Sheep aged 3 to 5 are the most fertile. The best utilization period is 6 years for female sheep and 8 years for female goats.

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