Postpartum paralysis of sows is a disease in which sows are physically weak, unable to stand on their limbs and their consciousness drops after delivery, also known as postpartum wind. It is a common and frequently-occurring disease of sows. Mainly due to the lack or imbalance of calcium and phosphorus in the diet; Long-term feeding corn, cereals and beans and other concentrate, inorganic phosphorus can not be supplemented; Due to factors such as excessive production intensity, the loss of calcium and phosphorus in parturient sows generally reaches the highest point around 20 days of lactation, and sows are paralyzed at postpartum 15 ~ 35 days and a few days before delivery.

Loss of appetite or refusal to eat before paralysis, slow movement, dry and hard feces, preference for drinking clean water, squatting on the ground, and different diets. Temperature and pulse are normal. After paralysis, there are back bow, constipation, slow movement, inability to stand for a long time, foot exchange, weakness of the hindquarters and loss of consciousness. In severe cases, people lie on the ground, scream at the touch, reduce lactation and refuse to breastfeed. If not treated in time, sows will lose weight until they die. Although the mortality rate of this disease is extremely low, it makes sows lose their feeding value, affects the growth and development of piglets, and even causes the death of piglets, resulting in huge economic losses, which should be highly valued.

Causes of postpartum paralysis of sows

Modern veterinary medicine believes that postpartum breastfeeding affects the content of calcium in blood, leading to this disease. In addition, malnutrition and improper feeding management, such as calcium deficiency during pregnancy or imbalance of calcium and phosphorus ratio; Insufficient feed or malnutrition; Postpartum qi and blood loss; In early spring, the climate is cold, and sows lack exercise; Cold-damp pen and cold wind blowing can cause meridian block. In addition, factors such as insufficient sunshine, too large fetus and sciatic nerve injury during midwifery can also cause the disease.

Clinical symptoms of postpartum paralysis in sows

Postpartum mood of sow is low, appetite is decreased, lactation is reduced, heartbeat is accelerated, standing is unstable, hind legs are weak and vacillating. Later, he could not stand, often lay on his side, his head tilted downward, his hind legs were splayed apart, and eventually he was paralyzed. Muscle atrophy over time, sometimes bedsore.

Preventive measures for postpartum paralysis of sows

Usually, shell powder, eggshell powder and calcium carbonate should be supplemented in the diet of pigs; Sows should be supplemented with bone meal, fish meal and miscellaneous bone soup in the late pregnancy and lactation period, and high-quality hay powder, leguminous forage (alfalfa) and green feed should be supplemented in winter and spring rainy season; The pigsty should be kept clean and dry; After the sow gives birth, the pigsty should be padded with more grass; Prevent the cold wind from blowing, keep the pigsty warm and spacious, and have plenty of sunshine; Sows should spend more time in the sun during pregnancy, exercise in the sun for 2 to 3 hours every day, feed digestible feed rich in protein, minerals and vitamins, and the ratio of calcium to phosphorus should be appropriate; For sows with a history of postpartum paralysis, intravenous injection of 10% calcium gluconate 100 ml was given once a week 20 days before delivery to prevent the occurrence of this disease.

Treatment of postpartum paralysis of sows

1, bone meal is added to the feed, and each pig is 30 ~ 50g per day.

2. intramuscular injection of 5 ~ 10 ml of ammonium vitamin butyrate injection, once every 3 days.

3. Add 3 ~ 6g of calcium superphosphate or bone meal to the feed every day for 10 ~ 15 days.

4, dexamethasone injection 5 ml-10 ml, intramuscular injection once a day.

5, 10% calcium gluconate injection 100~ 150 ml, intravenous injection once a day.

6. Breast gas supply method: sterilize the nipple and breast guide needle, pump air into the breast with a 100 ml syringe, and stop gas supply when the breast bulges slightly. The purpose is to reduce the amount of milk, thus slowing down the loss of calcium in the blood.

7. For seriously ill pigs, 10% calcium gluconate solution 100 ml -200 ml, 12.5% vitamin C 10 ml, compound sodium salicylate 20 ml and 500 ml glucose can be injected intravenously once every five days, and repeated medication is effective.

8, Chinese medicine therapy: oral "compound keel soup". Prescription: 300g of Os Draconis, 50g of Radix Angelicae Sinensis, 50g of Radix Rehmanniae Preparata, 0g of Carthamus tinctorius15g, 400g of malt, decocted twice a day in the morning and evening, and taken for 3 doses continuously, with remarkable curative effect.

9. Take 10% ~ 20% calcium gluconate (100 ~ 150ml) intravenously, once a day. The fifth prescription, 25g of Angelica sinensis, 25g of Saposhnikovia divaricata, 20g of Lumbricus and Zaocys, 20g of Carthamus tinctorius and Eupolyphaga Seu Steleophaga, 0/2g of Myrrha15g of Sanguis Draxonis15g, is taken once, with yellow wine as the guide and warm boiled water.