A pig farm wants to increase its economic income and must ensure the breeding of pig farms. However, there are pig farmers who report that there is no milk or lack of milk in the sow, which directly affects the growth of the piglets. What causes the sows without milk or lack of milk? How to prevent it?

First, the reason why the sow has no milk or lack of milk

1. Nutritional sow diet is unreasonable, feed is single, nutrient level is too low or too high, vitamins and trace elements are deficient (such as vitamin E and selenium), feed is mutated, feed ingredients are smashed too thick or too fine (too coarse to cause digestion) Poor, too fine leads to constipation), improper storage of the feed leads to mold and deterioration, etc., will lead to malnutrition or over-fertilization of the sow, physiological function decline, endocrine disorders and disease resistance, resulting in no milk or lack of milk.

2, the stress of the sows in the late pregnancy, the environmental changes, the tension during childbirth, the newborn piglets biting the nipples, injecting drugs, etc., various stress factors can stimulate the sow's receptors, causing excitement and stimulation The corresponding nervous system causes the lactation to drop.

3. Manage sows including pregnancy and lactation. If the living environment of this sow is bad, such as crowded living space, insufficient light, high noise, high temperature, etc., it can cause sows to be restless and prone to disease. If the ground is damp and unsanitary, especially the pre-natal and post-natal sows are easily contaminated by the hindquarters to cause metritis; if the nipples are contaminated, the nipple holes may become blocked or cause mastitis, resulting in decreased lactation.

4. If the feeding amount is too large in the middle of pregnancy, the sow is obese, causing fat infiltration in the breast, affecting the development of the mammary gland, and the nutritional level in the late pregnancy is too high. The endocrine disorder of the pig causes the lactation to decrease or stop.

5, if you choose a irritating disinfectant or the ratio is too high, it will cause damage to the sow, and the ratio is too low to achieve the disinfection effect. Although the gilts are mature, they have not yet reached sexual maturity. At this time, the breeding, breast and mammary gland development are incomplete, and the lactation is low.

6, when the sow suffers from mastitis, or due to dystocia and other causes of metritis, which in turn triggers mastitis, which causes inflammatory swelling of the mammary gland and mammary duct, causing milk retention and feedback inhibition of milk production hormone and milk discharge The release of hormones causes a decrease in lactation. If the sow suffers from other diseases, it causes an increase in body temperature and loss of appetite, which can affect lactation.

7. Because the piglets are weak after birth, they are unable to suck the nipples and cannot give enough stimulation to the sow's breasts, so that the sows cannot be properly discharged, and the lactation is reduced.

Second, preventive measures

1. The nutritional price is balanced and the supply is reasonable. The diet is prepared according to the sow's gestation period and lactation period, and the dietary nutrients should be balanced at full price. In particular, vitamin E and selenium should be restricted during pregnancy. The sows are in good condition before breeding. The feeding method can be used before and after pregnancy. For example, if the sows are thin before mating, short-term superior feeding should be adopted. During pregnancy, “high-low-high” feeding methods can be used to breastfeed. The diet should be prepared with high-quality raw materials that are easy to digest.

2. Avoid mechanical injury. Prevent mechanical injuries such as crowding, biting, slipping, whipping, frightening and catching up, and damage to the sow's nipples and breasts is prone to breast inflammation.

3. Maintain a good health environment and prevent diseases. Any disease that causes the sow's body temperature to rise, such as metritis, mastitis, Japanese encephalitis, and influenza, can cause lactation to decline or stop. Therefore, we must do a good job in cleaning, disinfecting and preventing diseases.

4, the primiparous sows in the first half of the month, 2 times a day to massage the breast, to promote its development, postpartum to do piglets artificially assisted feeding, to prevent piglets from breast milk caused by mutual milk damage to the sow nipple.

5. Strengthen post-production monitoring. Sows have high fever due to diseases such as metritis, mastitis, and colds. The performance is anti-feeding and no milk, which seriously affects the feeding of piglets. Therefore, the sow body temperature is measured early and late within 3 days after birth, and treated according to body temperature. It is necessary to pay attention to observe the feeding status of the sow, the shape of the feces and the discharge of secretions from the vulva, so that the sick sows can be treated in time without causing serious affection of lactation.

6. Timely breeding and elimination of old sows, timely breeding of gilts with a body weight of more than 100 kilograms and 8 months of age, and timely elimination of older sows of 7 or more births, and breeding healthy breeding sows.

The above are the reasons and preventive measures for sows without milk or lack of milk. If pig farmers have encountered such a situation, they can master the above precautions to avoid sows or lack of milk.

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