Feeding management goals
Increase the number of ovulation, ensure the success of pregnancy, and ensure that sows have a large number of output, strong vitality, individual large piglets, postpartum sows can successfully lactate. The key measure is to limit the amount of feed intake so that the sow can reach the standard body condition.
There is a problem
Over- or under-weighting can result in postpartum lactation deficiency, low birth weight, stunting, frequent diarrhoea, low piglet survival during lactation, low weaning weight, and low weaning estrus rate after weaning, affecting breeding of the next litter and Pregnancy, raising the cost of feeding.
Specific operation management points
1. Change the group feeding to individual rearing as soon as possible after mating (pre-pregnancy can be fed with 3-5 small groups and rearing in single-column rearing), and keep it quiet under appropriate temperature conditions so that the uterus can be effectively planted. Fertilized eggs. Sows in this period should be irritated by stress as much as possible, especially to avoid heat stress. They should not be whipped, chased, or harshly treated with sows. They should not shout loudly, and must not be fed with a mild, frozen feed to prevent stillbirths. abortion.
2. Do a good job of pregnancy diagnosis 18-24 days and 39-45 days after mating, and timely detect sows that are not in the relapse or relapse. Pregnancy diagnosis: Pregnancy can be determined in normal conditions by sows that no longer have estrus after 21 days of mating. Its performance is: snooze, appetite, easy to wear, light fur, tame, stable behavior, the cracks in the vulva contracted down into a line.
3. The pregnant sows are regularly evaluated and fed and managed in three stages according to the pregnancy stage. The feeding amount within one month of pregnancy is 1.8-2.2 kg per head per day, the feeding amount within two months of the middle of pregnancy is 2 to 2.5 kg per head per day, and the feeding amount in the last month is 2.8 to 1 per head per day. 3.5 kilograms, feed breastfeeding for one week before birth, and appropriately reduce the material.
4, set aside defecation, to keep the shed clean and hygienic; do summer heat protection and winter warm work, so that the temperature is maintained at about 20 °C, is strictly prohibited inside the house high temperature, humidity, icing, slipping, to prevent miscarriage.
5. After 1 month of pregnancy, the sow should be fully exercised, and the amount of exercise should be reduced in the later stages of pregnancy. Before exercise, stop exercise, prevent constipation, and force the birth.
6, found that timely treatment of pigs and disinfection of the whole group, prohibit the use of drugs that cause abortion (such as dexamethasone, etc.); prevent high fever caused by abortion.
7. The sows are transferred to the delivery room to adapt to the environment 7-10 days before delivery. At the same time, attention should be paid to the brushing of the breasts, legs, and the vulva to keep the pens and pigs clean.
Prevent mosquitoes and flies biting
The sows are attacked by mosquitoes, flies, and poisonous insects, which not only affect the rest, impede the healthy growth of the fetus, but also contagious diseases. Therefore, early in summer, it is necessary to set up a gauze net to prevent mosquitoes. In the peak period of mosquitoes, vitamin B1 is fed once every 3 days and the amount of 30 mg to 40 mg is fed. This way the sow can produce an odor that the mosquitoes can't approach, and it can also smash the tomato leaves and mint leaves. Rubbed on sows, have a good repellent effect.
Anti-human scared sow
Pregnant sows are most afraid of scaring, and they are vulnerable to stress after summer scars. Therefore, the surrounding environment of the pig house should be kept quiet. In summer, it is not advisable to transport sows in long distances to avoid death due to crowded heat stress. It is also necessary to carry out cool nights when purchasing fine breed sows or short-distance transportation.
Prevent mechanical abortion
The specialized households with more sows in the summer should pay attention to reasonably arrange the rearing density of pregnant sows. For example, in a 7 to 9 square-meter sow house, up to 4 in early pregnancy and up to 2 in late pregnancy, it is best to keep the animals separately, so as to avoid strong bullying and uneven feeding. The fetus does not grow neatly and can avoid biting and colliding with each other due to high temperature irritability, resulting in increased stillbirth or miscarriage. If there are grasslands nearby, the sow can often go out and increase the health of the sow, and the litter size can be shortened during farrowing.
Prevent disease transmission
In the summer of pregnancy, sows are prone to lice and lice, especially when they are born in the ear of pigs. The sows at the end of the third trimester of pregnancy should reduce the amount of their raw materials within 3 days before the birth. Only a few wheat bran porridges can be fed after the birth. The sow was disinfected and cleaned with 2% potassium permanganate solution before being transferred to the delivery room and allowed to dry. At the same time, the delivery room is cleaned and disinfected so as to ensure the healthy growth of the piglets after childbirth.
Prevent environmental pollution
Timely removal of feces, regular disinfection, disinfection drugs can be used such as killing or sodium hypochlorite, etc., can not be quicklime or fire alkali to sow disinfection. Feed the wet mix in the pig's trough, avoid leftovers as much as possible, and remove leftovers in time to avoid mildew. The trough is cleaned daily and dried in the sun.
Preventing overheating
For pregnant sows that pass the summer, create a cool environment. The piggery should be kept dry, and the nets should be installed on doors and windows to prevent mosquitoes and flies; equipment such as shading and ventilation should be provided to prevent the occurrence of heat stroke and other heat stress diseases. Sprinkle cool water into the house on hot days, but do not spray directly on the sow. When the temperature reaches 30°C or above, measures such as installing air conditioners and electric fans may be adopted to rapidly reduce the temperature to prevent stillbirth.
Prevents feed from being left out
In summer, the number of feedings should be increased in the feeding method and feeding amount. The amount of feeding should not be excessive, and feeding in the early morning and feeding in the evening and feeding at night should be done. Before each feeding, the leftovers in the trough should be cleaned and fed again. In addition, the drinking water on the playground should be kept uninterrupted and the drinking fountain should be placed in a cool place in order to prevent the sunlight from heating up. At noon the weather is hot and the sows have poor appetite. They can be fed with some concentrated feed.
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