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What are the key preventive measures for breeding pig diseases in winter

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Key preventive measures for breeding pig diseases in winter
Raising breeding pigs well in winter is very important, as it is the basic guarantee for ensuring a year-round supply of piglets, but in recent years there have been more pig diseases in winter, so production units should pay attention to good prevention. The main pig diseases to focus on preventing and controlling are highly pathogenic blue ear disease, pseudorabies, parvovirus disease, pleuropneumonia, and circovirus disease.

I. Five diseases

1. Highly pathogenic blue ear disease

Highly pathogenic porcine blue ear disease is seriously harmful. It can be spread through boar semen and can also be transmitted vertically between mother and offspring, so doing a good job of preventing highly pathogenic porcine blue ear disease in breeding pigs is of great significance. An inactivated vaccine for highly pathogenic blue ear disease can be used. Piglets receive their first immunization after weaning, followed by a booster immunization 1 month later, with each dose being 2 ml. On the basis of good immunization of piglets, breeding pigs should be the focus of immunization in winter. Pregnant sows receive a booster immunization 1 month before farrowing, and boars receive a booster immunization every 6 months; the dose for both sows and boars is 4 ml each time.

2. Pseudorabies

Pregnant sows are prone to miscarriage after contracting pseudorabies, which is very harmful to productivity. For immunization, an oil-emulsion inactivated pseudorabies vaccine can be used; attenuated vaccines are generally not suitable. Boars and sows kept for breeding are injected once at 6 months of age, sows receive another booster immunization 1 month before farrowing, and afterward boars and sows are immunized once every 6 months, with each dose being 5 ml.

3. Parvovirus disease

It mainly harms breeding sows, damaging reproductive capacity and causing stillbirths, deformed fetuses, and mummified fetuses, but the sows themselves often show no obvious symptoms. For prevention, an aluminum hydroxide inactivated porcine parvovirus vaccine can be used. Before mating, sows and boars at 8 months of age receive a 2 ml intramuscular injection in the neck, with an immune protection period of 1 year.

4. Pleuropneumonia

It is more common in winter. Poor ventilation and sudden climate changes often induce pleuropneumonia. For prevention, an inactivated porcine pleuropneumonia bacterin can be used. Breeding pigs receive their first immunization at 6 months of age or before introduction, followed by a booster immunization 3 weeks later, with 2 ml used each time.

5. Circovirus disease

Circovirus disease is very harmful to piglets, but it is mostly transmitted to piglets through breeding pigs. Boar semen can carry the virus and infect sows through mating, and sows in turn transmit it vertically to fetal pigs through the placenta, causing early infection in piglets. Preventing breeding pigs from being infected with circovirus is the key to protecting piglets. Most clinically occurring cases of circovirus infection are directly related to mixed infection or secondary infection with other pathogens, most commonly blue ear disease virus, parvovirus, pseudorabies virus, influenza virus, epidemic diarrhea virus, Mycoplasma pneumoniae, Pasteurella, Haemophilus parasuis, and so on. In production, immunization against these diseases should first be done well, and the threat caused by all suspicious accomplices should be eliminated.

II. Comprehensive preventive measures

In winter, ensure that the pig house is warm and ventilated, and avoid cold stress and the harm of harmful gases; use high-quality mixed rations and appropriately increase the content of vitamins and minerals to ensure a sufficient nutritional supply for breeding pigs and enhance the body's resistance; provide warm drinking water to breeding pigs, and when using wet mash, try to mix the feed with warm water as much as possible, clean the water troughs and feed troughs in time, and prohibit feed and drinking water from freezing; strengthen environmental hygiene and pig house disinfection, carrying out a comprehensive disinfection once a week, and disinfectants such as Baidusha, Jundumie, Suxiaoiodine, Weiliiodine, 0.3% peracetic acid, and 0.5% Qiangli Xiaoduling can be used; even in cold seasons, clean the pig pens in time, and after collecting manure, transport it to the manure treatment site for piling and fermentation; in winter there are especially many rats in pig farms, and rats are also a source of infection for pseudorabies, so pig farms and households must do a good job of rodent control, and try as much as possible to prevent dogs, cats, chickens, birds, and other animals from entering the pig house.

Respiratory infections are very common in winter and are also the most likely to lead to mixed infections. Adding antibacterial drugs to breeding pig feed to prevent bacterial diseases in a targeted way is a main measure for the health care of breeding pigs.

III. Sow prevention plan

1. From 1 week before farrowing to 1 week after farrowing, add 125 mg of tiamulin, 125 mg of doxycycline, and 125 mg of amoxicillin per kg of feed; 2. Add 100 g of tiamulin + 300 g of chlortetracycline + 200 g of amoxicillin per ton of feed, and use continuously for 7 days before and after farrowing; 3. Add 1 kg of Taihuangfeisu per ton of feed, and use continuously from 3 days before farrowing to 5 days after farrowing. Drug prevention for boars can refer to the sow plan. In addition, pig farms and households can also flexibly screen drugs according to actual conditions and choose more practical and effective plans.
Source: Hebei Farmers' Daily
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Reply 1#Muma Qilian
This post has not grasped the mainstream of pig diseases, so the prevention plan needs to be reconsidered.
1. The four major pig diseases are still the mainstream-----swine fever, foot-and-mouth disease, swine influenza, and panting disease
2. Pay attention to keeping warm to prevent pleuropneumonia and diarrhea in piglets as well as swine influenza

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