Feeding and management of sows in winter

First, a few key points for prenatal preparation

1-2 weeks before birth to clean, disinfect the delivery room, ready to produce supplies, in the production of good bedding, and connected to the infrared light, while preheating the delivery room to 18-20 °C.

Sows with good body condition will gradually reduce the amount of 20% to 30% of feed before 5-7 days of prepartum, and further reduce 30%-50% before 2-3 days before giving birth. They will generally feed 2kg each day, and will not feed on the day of delivery. , Avoid excessive postpartum milk or too much milk caused by piglets diarrhea and sow mastitis. Under normal condition, the sows do not reduce their weight, and sows with leaner body condition may appropriately increase quality protein feeds to facilitate postpartum lactation. 3 days before delivery and 3 days after delivery, apply 0.02% potassium permanganate and massage the breasts. Pre-production sows should appropriately increase bran and other light diarrhea feeds in the diets of the sows, transfer them into porridge-like feeds, and ensure that drinking water is provided to prevent the constipation of sows from causing dystocia.

Second, do a good job of cold and warm work

The cold winter weather is very important for cold and warm work. Too low temperature can make the pregnant sow's health level drop, induce some diseases, and thus affect lactation sow's milk yield and milk quality. The sow is large, usually about 200kg, and the temperature inside the house is preferably controlled at 18-20°C.

In winter, there is a large temperature difference between the interior and exterior. If there is no good ventilation facilities, and they dare not open the windows, the indoor air quality will be seriously reduced, resulting in a decrease in the appetite of the sows, and the feed in the feed trough will also be easily degraded by humidity. The husbandry and management personnel must balance the temperature in the delivery room and maintain air quality. When the temperature is lower, it is recommended to increase the heating equipment, and at the same time to provide the piglet insulation device, put the dry, clean soft sacks into the incubator in advance, and make it the same temperature with the housing to prevent the excessive loss of body temperature of newborn piglets. The delivery room is dry and the humidity is kept between 65% and 75%; sunlight is sufficient and the air is fresh.

Third, ensure the quality and quantity of feed

Do not feed moldy, spoilage, spoilage, freezing, toxic and other feeds, to prevent feed problems caused by antifeedant, causing changes in milk caused by piglets and other diseases diarrhea, performance continued estrus or extended estrus cycle, affecting the survival rate of suckling piglets. If sows have more than 10 farrowings, it is best to use the principle of gradual increase or free intake.

IV Scientific arrangement of sow diets to increase milk production

Enhancing the late gestation sow The fetus develops rapidly during the late gestation and the sow's mammary gland develops at the same time. If the nutrition is not enough, not only the fetus will not develop well, the birth weight will be low, and the breast development will be poor. Therefore, the nutrition level in the later period of pregnancy not only affects the birth weight of piglets but also affects the amount of lactation, the weight gain of suckling piglets, and the interval between weaning and breeding. Adding 1% of “Life No.1” to the sow diet can fully meet the nutritional requirements for the development of the fetus and the development of immune organs, and increase the birth weight and disease resistance of the piglet.

The period of lactation is the “double rush” period of the sow. Not only does it have to nurse the piglets, but it also repairs their own organs, which greatly increases the daily maintenance requirements of the sows. However, because post-partum organs are in a period of recovery, the digestive function is weak, and it is inappropriate to feed too much. Therefore, it is particularly important to find a suitable way to supplement the sows with nutrients. It is recommended that when feeding lactating sows do not feed on the first day of feeding, less feed the next day, an average of 0.5 kg per head, gradually increase to normal feeding after 3-5 days, up to no more than 6 kg, and It is advisable to feed 4 times and increase drinking water and green and juicy feed supplies appropriately. At the same time, adding 2% of antibiotic-free sow special health care product “No. 1” in the diet can significantly increase sow lactation, piglet weaning weight and survival rate; shorten the time of sow's own (especially the uterus) repair The degree of uterine recovery is high. Generally, the lactation of the sow during lactation is 5-9 kg/day. By using the health care, the amount of lactation is increased by more than 30% on the original basis. The weaned piglets were weaned in 28 days and the average weaning weight was more than 9 kg. The size of the weaned pigs was even and the uniformity was high. The survival rate during the lactation period increased to 98% or more.

Fifth, prevention of drug-induced constipation

It is mainly the abuse of veterinary drugs in recent years that leads to clinically dry sow of sows, reduced sows during feeding and postpartum period, or even no sows for sows during prenatal and postpartum period, and lactating sows lacking milk and milklessness as a disease. Occurrence of lactation in the sows during the lactation, no milk, piglets on the slow growth and development. Severe drug-induced constipation of sows after weaning can not be estrus on time, so that drug-induced constipation in the production of large impact.

We can appropriately add drugs before and after birth to prevent infections, but we must follow three principles: a drug does not harm the fetus; two drugs do not cause constipation; and third, drugs cannot enter milk.

If constipation has already occurred, we need to find out why: if there is a lot of medicine in the feed, if it is added, it will be removed; if it is not eaten after constipation, add artificial salt or baking soda in the drinking water. Feces make it smooth. If it is able to eat, there is no large amount of drugs added to the feed. This is mostly due to the high content of the drug in the feed itself. In this case, our premix is ​​added with 4%, and it can be reduced appropriately. Adding 3%, breastfeeding plus 2% of the fatal number 1 can solve this problem.

Sixth, strengthen management, do a good job of production records

1, less feed Tim, increase the number of feeding. The digestive function of the sow has not been restored for a few days after her delivery. With the increase of the amount of lactation, the need for nutrition for sows is increasing day by day, and the number of feedings for sows should be increased. It is advisable to feed 3 to 4 times daily.

2, to ensure adequate drinking water. Sows need large amounts of water during the lactation phase. Only sufficient drinking water is available to ensure normal daily milk production.

3. Protect the sow's breasts and nipples. Piglets should be removed after birth. And training to fix the nipple to prevent milk from biting and hurting the nipple. The sucking ability of the piglet can promote the development of the sow's breast. In particular, the first time the sow is born, the piglet must use the entire nipple evenly so that each breast is well developed and can increase the amount of milk produced in the subsequent few births.

4. The sows and piglets in the winter farrowing house are in a closed or semi-enclosed environment and need to be constantly adjusted to meet the pig's requirements for temperature, humidity, light, ventilation, feed, and drinking water. For delivery rooms that use warm lamps or other electrical appliances for heating, fire hydrants or fire extinguishers are also provided to prevent any possible accidents. It is also very important to keep records of production management. Mainly include: sow litter records, piglet weighing and fostering records, pigs out records, disease occurrence and treatment records, death records, feed consumption records, pig out pig records, weaning records, duty records, and so on. Records should be standardized, and they should be well preserved and searchable. In the event of production and management problems, many reasons can be found in the records that can help identify the problem.

7. Cultivate piglets

After the birth of the piglet, the environment has undergone great changes, requiring the piglet to have the ability to adapt to a variety of complex conditions, but this ability has a certain limit, otherwise it will die of illness, so the cultivation of a strong piglet is a multi-faceted Comprehensive measures, in addition to the rational feeding of nursing sows, should focus on the maintenance of suckling piglets efforts.

First of all, let the piglets eat colostrum. The sow colostrum has high nutritional value, especially the protein content is 2-3 times higher than that of normal pig milk. It is rich in antibodies, and it is the main source of immunized antibodies from the mother's newborn piglets. Because of the source, colostrum must be eaten by the piglets 0.5 to 1 hours after they were born.

Secondly, to give birth to newborn piglets; fix the nipples and fix the nipples to ensure that the sows are lactating quietly and increase their milk production. The piglets have the habit of fixing the nipples until the weaning. They do not change their positions. It can prevent strong bullying and even development of piglets.

The third is insulation and pressure prevention. Before birth, the piglet is in the mother's uterus at a temperature of 40°C and the temperature after birth can not be lower than 30°C. Otherwise, the piglets show sluggish behavior and difficulty in sucking milk. Low temperatures can damage the liver and intestines of piglets and cause shock and diarrhea, often ending with starvation, crushed death, and death. Therefore, the litter in spring and winter should be carried out in the insulation room. Cement floor must have thick mat grass, build insulation room, nursery bar and other measures.

The fourth is iron supplementation, with iron supplements available on the market, intramuscular injection of 1 mL within 2 days after delivery, and injection of 1 injection 7 days later.

The last is the early feed. In addition to breast milk, the source of piglets nutrition is supplemented by feed, mainly to compensate for the lack of sows and increase the nutrition of piglets to ensure the normal development of piglets.

Eight, summary

In summary, during the cold winter, lactating sows increase their lactation levels through various measures such as nutritional regulation, and eventually achieve the purpose of increasing the birth weight and weaning weight of piglets, enhancing disease resistance, and improving the survival rate of piglets. of. Another way is to re-leave the floor and make it waterproof. This method is relatively large and expensive, but once and for all.

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