Cold winter: before winter, it is necessary to disinfect the breeding herd, in vivo and in vitro deworming. Into the winter and spring seasons, disinfection should highlight the seasonal characteristics, minimize disinfection with pigs, strengthen the empty pen disinfection, disinfection more fumigation disinfection, phantom 360 disinfection, farrowing houses, nursery piglets, according to the situation to consider dry powder spray disinfection. But pay attention to the dust content. Pay attention to the temperature of the disinfectant, most of the disinfectants have temperature requirements, under the same concentration, the higher the temperature, the better the disinfection effect. Empty pen disinfection can be considered to increase the concentration of disinfectant dilution ratio. Extend the action time to ensure the disinfection effect.
Winter and spring season is swine fever, foot and mouth disease, pseudorabies, blue ear, viral diarrhea, respiratory disease season, aisles, doorways, pig platforms and other sensitive areas of disinfection should not be overlooked, entrances and exits, disinfectant, disinfectant pools, disinfectant buckets, hand washing basins, should be equipped with a complete range of disinfectant to ensure that the concentration of disinfectant drugs and rationing to make a special ratio of volume. Disinfectant water to do regular replacement, disinfectant varieties should be complete, and make regular replacement plan. Emphasis on the winter and spring seasons, “closed” work, do a good job in and out, testing, bathing, rinsing disinfection work. Employee leave to return to the field, testing bath, rinse after the need for 2 nights and 1 day isolation. Ensure pathogen isolation, isolation should have fixed staff isolation place.
Affected by winter: swine fever, pseudorabies, foot-and-mouth disease, viral diarrhea and other diseases are more likely to occur, so you need to pay attention to the quality of vaccine immunization to ensure that the immunization is in place.
Make good preparations for epidemic prevention materials, purchase and store vaccines according to the immunization procedure, and make good purchases of all kinds of disinfectants and flinty lime.
Antibody and immunization effect monitoring: blood is regularly collected and sent for examination to monitor the immunization status, so as to make up the injection or strengthen the immunization in time. We have a clear idea of the occurrence of the disease; we usually find abnormalities and send samples for testing in time to improve the accuracy of disease diagnosis with the help of the laboratory; we collect the results of laboratory tests and analyze them together with the clinical analysis to gradually form a database of the disease, which is convenient for early warning analysis of the disease and timely discovery of destabilizing factors.
Feeding management: Adjusting the standard of pig material quantity, generally speaking, it is necessary to adjust the fat to the best state in the first 70 days of pregnancy, and after 85 days, the feed needs to take into account the need of rapid weight gain of the fetus. The accuracy of feed quantity needs to be reflected by timely and accurate report records. Make regular corrections to the feed cups.
Do a good job of deworming, health care and anti-stress work to ensure the health and fat of the breeding pigs, and to ensure that the breeding pigs get through the cold winter.
Environmental control of heat preservation and ventilation: heat preservation and ventilation of farrowing house and nursery is the focus and difficulty of work in winter and spring seasons, and good heat preservation and ventilation can control the cost of medicine and feed. Heat preservation and ventilation follow the principle of ventilation in big environment and heat preservation in small environment, which is reflected in the main observation of piglets and sows’ behavior and the actual temperature in the house to decide whether heat preservation is needed or not. Or according to the human feeling, whether the ammonia odor is pungent or not, decide whether to ventilate or not. Several stages of heat preservation need to be paid attention to piglets within 7 days after farrowing, within 3 days after weaning and within 5 days after transferring to nursery.
In winter, low temperature and high humidity, humidity control is quite important. Humidity control is not good breeding pigs are prone to cracked hooves and arthritis, and even rheumatism; piglets resistance decreases, prone to respiratory diseases, rough coat, low temperature and high humidity make pigs maintain the amount of need to greatly increased, growth rate decreased.
Currently control humidity commonly used measures:
1, reduce unnecessary flushing.
2, maternity nursery with pig disinfection, consider fumigation disinfection, dry powder disinfection assistance.
3, if necessary, in the main arterial roads and barn access, sprinkle quicklime, placed lime block adsorption effect.
4, high humidity unit in the case of reasonable temperature increase ventilation to control humidity.
