How long should piglets be weaned?

A: At present, the weaning time of imported piglets is generally about 28 days, and that of local piglets is generally about 35 days. The specific weaning time needs to be adjusted according to the quality of sow milk, litter size, breeding conditions, pig house temperature and sow variety.

First, how many days does the piglet wean?

Different breeds of piglets have different weaning time. Generally, the weaning time of piglets is 265,438+0 days, 24 days, 28 days and 35 days. It takes about 28 days for imported varieties and 35 days for local varieties. But the specific weaning time needs to be adjusted according to the actual situation.

1, milk: If the sow's milk quality is poor, it can be weaned early (about 2 1 day) and then fed to piglets with high nutritional value.

2. Litter size: If the sow has a small litter size at a time, it can be weaned in advance (about 2 1-24 days), so that the sow can enter estrus as soon as possible and improve economic benefits; If a large number of piglets are produced at one time, it is best to wean them later (about 28 days).

3. Breeding facilities: those with good breeding conditions can be weaned as soon as possible, and those with poor breeding conditions can be weaned later (about 28 days).

4. Breed: If it is external ternary, the weaning time can be earlier, and if it is internal ternary and local pigs, the weaning time can be later.

5. Temperature: When the temperature is suitable, weaning is generally about 24-25 days. If the weather temperature is low, it is generally suitable for weaning for about 28 days.

Second, how long can sow breed after weaning?

1. Under normal circumstances, sows start estrus about 5-7 days after weaning, and mating usually takes place about 5.5-8.5 days after weaning (average 7.6 days). If it is a first-time sow, or a sow with a disease, it takes longer to recover.

2. For sows without normal estrus, intramuscular injection of 2? Cloprostol sodium? Feed 33g every day at the same time? Good pregnancy and many children? Once a day for 3 days. If the sow is still in estrus after two treatments, it can be considered to be eliminated in time.

3. After weaning, sows can be deworming 1-2 days, and epidemic prevention can be carried out about 4-5 days after weaning. At the same time, in the first three days after weaning, do a good job in raising and managing sows so that sows can return to milk as soon as possible.

4. Keep the temperature in the pigsty between 16℃-25℃ and the relative humidity between 70% and 80%. Summer cooling and heatstroke prevention, winter heat preservation, pigsty should pay attention to ventilation.