Causes and prevention of constipation in sows with poor appetite, weak litters and no milk

In recent years, the phenomenon of sow constipation is common. Light loss of appetite, lack of nutrition, postpartum lack of milk, weak birth, etc., serious digestion and absorption disorder, mental abnormality, serious, sow death.

Sow

1. Causes of sow constipation:

1. Lack of exercise during pregnancy. More common in caged sows, sows are restricted after breeding, low food intake, resulting in weakened digestion and absorption function of sows, dry intestinal contents, leading to constipation.

two。 In the later stage of pregnancy, due to the enlargement of the fetus, the compression of the rectal wall increased, the rectal peristalsis decreased, the feces stayed in the intestine for a long time, and the water was overabsorbed, resulting in sow constipation, which was common in sows with excessive litter size and large litter size.

3. Lack of drinking water is more common in summer. In some pig farms, due to the aging of water pipes, the water pressure in the house during pregnancy is not enough, which is far from the water flow required by sows, so that the feces are too dry and constipation occurs. On the other hand, the water temperature in the water pipe is too high due to the severe exposure of the tap pipe, and the sows have constipation after drinking.

4. Physiological and psychological stress before delivery leads to the strengthening of gastrointestinal peristalsis in sows, which makes intestinal water absorbed into the blood and causes constipation in sows, which is more common in parturient sows.

5. When the diet changed from low-protein diet in early pregnancy to high-protein diet in late pregnancy, the ability of large intestine to absorb and secrete liquid changed relatively, making the large intestine full and constipated.

6. Excessive feed restriction, resulting in constipation caused by excessive absorption of water in the intestines due to lack of green feed.

7. Pig breeders give drugs to pigs irregularly in order to prevent diseases, and drugs are added too frequently, almost 10 days a month on average to prevent diseases. The result is that sow feces are too hard and constipation occurs.

8. Drug-induced constipation, some feed manufacturers, in order to increase the litter size of sows, do not consider the needs of sows, add antibacterial growth-promoting agents such as chlortetracycline, bacillus peptide zinc and so on. Under the action of antibiotics in the gastrointestinal tract of sows, water is overabsorbed and constipation occurs.

9. Some sows suffering from febrile diseases such as classical swine fever (mostly mild), toxoplasmosis, blue ear disease and so on can also cause constipation.

Second, prevention and treatment of sow constipation:

1. Adequate high-quality drinking water. Adequate and clean drinking water must be provided for sows at all times and under all circumstances. Ensure that the water quality is good, the water temperature is cool and the water quantity is sufficient.

2. Nutritional formula. In summer, the heat stress of pigs was serious, and the feed intake of sows decreased. Can slightly change the formula, suitable for crude fiber content, add embellish intestines, laxative substances such as oil, molasses and so on. This can avoid the trouble of dealing with a single constipation sow, and I believe the effect is also good.

3. Reduce drugs and add probiotics and physiological regulators. It is suggested that sows should be fed with drugs for 7 days before and after delivery, and no drugs should be added in other periods. At the same time, the use of probiotics in feed can improve the intestinal microecological environment of sows and relieve constipation caused by intestinal flora imbalance caused by drugs or other reasons.

4. Exercise properly. Ensure that sows have enough exercise space, restore the living environment of sows, be conducive to ventilation, reduce the incidence of respiratory diseases, observe the situation of sows, deal with them in time and take good measures.