When do sows usually give birth? What are the key points of feeding and management?

Childbirth refers to the period and process during which a fetus separates from its mother and becomes an independent entity. Pigs and people are also born, so when does the sow usually give birth? What are the key points of feeding management?

When do pigs usually give birth?

Sows give birth mostly at night, generally lying on their sides, after several violent contractions and nudges (nudges refer to respiratory muscles: tonic contraction of abdominal muscles and diaphragms will expel the fetus outward, which is a reflex contraction caused by contractions squeezing the fetus into the birth canal and compressing the nerves of the birth canal), the placenta ruptures, blood and amniotic fluid flow out, and then piglets are born. Generally, one piglet is born every 5 - 25 minutes after normal birth, and all piglets are born every 10-20 minutes after birth. The whole birth process takes about 1 - 4 hours. In order to improve the survival rate of piglets, most of the sows were artificially rebred.

What are the key points of sow farrowing and feeding management?

1. Prenatal preparation. Accurately calculate the expected date of birth (the gestation period of pigs is 114 days), prepare clean towels, silk threads, scissors, disinfectant, piglet delivery box, insulation lamp and other delivery supplies. Delivery personnel should disinfect arms and delivery tools first.

2. Production management. Day and night shift to care for parturient sows, ready to receive labor at any time. After the piglet is born, immediately wipe the nose, mouth and mucus of the whole body with a cloth to make the piglet breathe smoothly, connect and cut the umbilical cord about 3 cm away from the piglet abdomen, disinfect the decapitation place with 2% iodine tincture, and rescue, weigh, number, cut teeth and cut off the tail of the suspended dead piglet.

3. Treatment of dystocia. If you don't give birth for 30 minutes, you have to give birth. Medical midwifery: oxytocin dosage for every 100 kg body weight injection 2 ml, 20~30 minutes after injection can produce piglets, if ineffective to use artificial midwifery. Artificial midwifery: midwifery personnel cut short and smooth fingernails, wash hands with soapy water, disinfect hands and arms with disinfectant, apply lubricant or put on sterilized rubber gloves, then put their hands into the sow's birth canal, pull out piglets according to the sow's responsibility rhythm, pull out one piglet, if it turns to normal labor, there is no need for artificial midwifery. Sows were injected with antibiotics after surgery to prevent infection.

4, do a good job of sow feeding management before and after delivery. Special attention should be paid to the condition of sows 5~7 days before parturition, and problems found should be dealt with in time to ensure normal digestive tract of sows and prevent constipation and elevated body temperature. Sows can be fed 1~1.5 kg diet on the day of parturition, and fed 2-3 times bran saline soup (bran 20 g, salt 25 g, water 2 kg). The feeding amount for 2~3 days after parturition is 1/3~1/2 of the normal feeding amount, and then gradually transition to free feeding to ensure adequate supply of clean drinking water.