What disease is it easy to suffer from pigs in summer? How to prevent and cure? Eight key technical measures for safe resumption of pig production in summer

In summer, the incidence of pigs with high temperature is also higher than that in other seasons. And this is also easy to bring losses to Yang Zhiju, what diseases are pigs prone to in summer? How to prevent? This summer pig safety eight key technical measures you can have a good collection!

What diseases are pigs prone to in summer?

1. exudative dermatitis

The disease is mostly caused by fighting bites, rough ground and wall friction, and wound infections such as scratches.

2. eczema

Pigs live in high temperature and humidity environment for a long time, coupled with the accumulation of toxins in the body caused the disease.

3. Japanese encephalitis

Porcine epidemic encephalitis B, also known as Japanese encephalitis B, is caused by Japanese encephalitis virus in pigs, an acute, high fever, abortion, stillbirth and boar orchitis as the main characteristics of the disease.

4. eperythrozoonosis in swine

It can be caused by many factors, stress is the main factor leading to the occurrence of this disease, which often occurs in warm seasons, especially in hot and humid weather.

5. sunburn

Often occurs in the pen pig open feeding, because the pig for a long time by the sun caused by radiation, mostly in summer.

6. swine toxoplasmosis

Different breeds, ages, sex can occur, but to pork pigs more, the disease occurred without obvious seasonality, but in July, August, September high temperature, sultry, humid summer days more, mostly sporadic.

II. How to prevent and control pig disease in summer?

There are different prevention and treatment methods for different diseases, such as:

1. exudative dermatitis

Soak the sick piglet body in 0.1% potassium permanganate water for 1-2 minutes, wash the focus with cotton wool soaked in potassium permanganate water, then dry, dry and coat gentian violet. For the first few lesions directly painted gentian violet, the effect is very good; in the use of penicillin 50,000 units for intramuscular injection, twice a day, for 3-5 days.

2. eczema

0.1% potassium permanganate solution to clean the affected part, then apply the cream of ichthyolite once a day for 3 days.

Intramuscular injection of Cephalosporin + Dimi, VC, for 3 days. Rice should be used with caution during pregnancy.

3. swine toxoplasmosis

Sulfamethazine + Dimethoxypyrimidine, 30-70mg/kg body weight, once every 24 hours, intramuscular injection for 3-5 days, carefully selected for severely ill pigs. Or sulfadiazine (SD) 70mg/kg body weight plus trimethoprim (TMP) or dimethoprim (DVD) 14mg/kg body weight orally twice daily for 3-5 days.

In addition, such as swine epidemic encephalitis B, mild swine fever and so on are through vaccine immunization for prevention and control.

Attachment: Eight Key Technical Measures for Safe Production of Pigs in Summer

I. Improving biosafety measures for African swine fever prevention and control

African swine fever prevention and control is the key to pig production, breeding and stable production and supply. The farm shall strictly implement the Guidelines for Strengthening Measures for Prevention and Control of African Swine Fever and the Emergency Implementation Plan for African Swine Fever Epidemic Situation, actively carry out epidemic monitoring of African Swine Fever, detect epidemic risks as soon as possible and deal with them in time, so as to effectively prevent the spread of epidemic situation. It is strictly prohibited for infected pigs and infected pigs to enter the transportation, sales and slaughtering links, so as to effectively block the transmission of African swine fever. Do a good job of introduction detection to cut off the spread of African swine fever caused by introduction. Strengthen biosafety measures for farm personnel, transportation vehicles, materials, feeds and other links. The main pig producing areas in southern China should monitor and disinfect the pig breeding environment, disinfect the surrounding environment and roads of pig farms in time after rain, acidify and disinfect the water sources that may be polluted, and timely do a good job in rodent control, mosquito control, fly control and bird prevention, so as to eliminate the impact of environmental and water pollution. Pig farms affected by epidemic situation shall be thoroughly cleaned and disinfected, biosafety facilities and equipment shall be upgraded and reconstructed accordingly, and production shall be resumed according to plans after environmental inspection is qualified. The biosafety prevention and control scheme shall be scientifically designed for new pig farms, the zoning layout and physical isolation management shall be strictly enforced, and comprehensive prevention and control technical measures such as full coverage qPCR sampling detection, African swine fever virus elimination, zoning and grading management shall be improved to form an effective prevention and control pattern of one policy.

II. Optimize prevention and control strategies for other pig diseases

The farm shall do a good job in immunization against foot-and-mouth disease, swine fever, pseudorabies and other epidemic diseases. In combination with the actual production, it can adjust and optimize the vaccine immunization prevention and control strategy, formulate more scientific, reasonable and safe immunization procedures, appropriately reduce unnecessary vaccination, reduce vaccination frequency and reduce stress. Based on the current long-distance frequent transportation of breeding pigs and piglets, try to avoid introducing or purchasing pigs from multiple pig farms, comprehensively detect the purchased breeding pigs (pigs), and avoid the introduction of new strains of blue ear disease caused by disorderly introduction and purchase of pigs. If there are conditions, comprehensive measures such as reserve pig domestication, herd domestication and immune domestication should be adopted to gradually realize stable control and purification elimination of blue ear disease.

For the production system of "company + family farm", it is necessary to focus on improving the upgrading and transformation of protective facilities of "family farm", such as feed transfer, washing and disinfection room, material disinfection room, closed corridor, insect vector prevention and control network, physical enclosure wall, etc. The qualified areas can improve the technical level of farms (households) by means of point-to-point assistance from technical task force members, so as to pass the summer pass smoothly. For specialized fattening communities, focus on improving all-in and all-out production process transformation, closed corridors, etc. For one-stop breeding farms, it is necessary to focus on controlling the temperature and air quality of the environment in the pigsty, so as to get rid of the trouble caused by environmental conditional diseases to pig production. If conditions permit, air filtration and odor treatment devices can be installed to reduce the risk of airborne diseases such as blue ear disease. For standardized fattening communities, strictly implement the "five unification" measures, and equip professional and technical personnel to carry out on-site management to prevent stress losses caused by high temperature in summer.

III. Adjusting breeding mode of breeding pigs

Affected by the epidemic situation and the retention of ternary sows, the comprehensive reproductive efficiency of fertile sow population in China has declined since last year. To improve reproductive efficiency through timely selection and control of sow performance selection. Speed up the breeding of binary sows, especially increase the supply of high-quality breeding pigs free of African swine fever, blue ear disease, pseudorabies and other diseases. Encourage qualified enterprises to use excellent binary sow population to produce parental sows by means of Landrace or Large White recurrent hybridization, so as to alleviate the tight situation of provenance supply. As for the semen supply of breeding boars, due to the small number of socialized breeding boar stations, the breeding boar stations with good health level are encouraged to supply the semen of Landrace and White boar to alleviate the problem of insufficient semen supply of Landrace and White boar. Enterprises applying local pig breeds to produce high-quality pork should focus on speeding up the population recovery of local pig breed resources. Some excellent sows with binary (including 50% local pig blood) and ternary (including 75% local pig blood) can be used as parental sows to produce commercial pigs by means of cross crossing, etc., so as to make full use of the excellent performance of local pig genetic resources and establish seed production methods to meet different consumption demands.

IV. Scientific selection and feeding management of ternary sows

In view of the relatively insufficient supply of binary sows, if it is really necessary to keep ternary replacement sows in the short term, it should be planned as early as possible and carefully selected. The ternary sows weighing 50-60kg should be selected and kept, and when they grow to 90-100kg, they should be selected again. The selection method should refer to the selection requirements of binary sows, the number of nipples should be 7 pairs, the vulva is larger and drooping, the hair color is white, the body length is wider, and the initial selection number can be more. Gilts began to be induced at 160-170 days of age, kept the light time and intensity of the pigsty, bred for about 240 days, weighed 120-140kg, avoided inbreeding, preferred to choose white and white boars for breeding, and tried not to match Duroc. Strengthen nutrition and management of sow in delivery room, increase high-quality cellulose in feed, prevent constipation, increase high-quality protein such as expanded soybean and fish meal, add acidifier and attractant, and improve palatability. With the arrival of summer, focus on heatstroke prevention and cooling to prevent excessive weight loss or even heatstroke death caused by insufficient feed intake of sows. Comprehensive measures such as adding heat insulation layer, dripping to cool down, wall insulation, etc. can be taken. The delivery room temperature shall not be higher than 25℃, and the water pressure shall be maintained at 2.0-2.4L/min. Do a good job in feeding and management of ternary sows during weaning period, improve feed intake during lactation period, continue to feed lactation feed after weaning, and maintain appropriate exercise, adopt boar inducement to check the situation, timely eliminate sows with low reproductive performance, weaning age can be appropriately advanced, about 24 days can be weaned, reduce sow consumption.

5. Precision pig feed preparation and nutrition regulation

The feed is pelletized at high temperature, the pelletizing temperature is increased, the preparation time is prolonged, the preparation temperature is ensured to be ≥85 DEG C, the preparation time is more than 3 minutes, and the biological safety of the feed is strictly controlled. In view of the high temperature and low feed intake of sows in summer, on the one hand, various cooling measures can be taken to reduce the temperature in the farrowing house, and oil and appropriate lysine can be added to the diet of nursing sows to increase the level of dietary digestible energy and lysine and improve the nutritional intake of nursing sows. On the other hand, it can popularize and apply the high-efficiency breeding nutrition technology of breeding pigs, improve the feed intake of lactating sows, control body weight and backfat, improve lactation performance and improve the growth performance of piglets by providing cold water at 10-15℃ to lactating sows, optimizing the amino acid ratio (valine, arginine, taurine, etc.) in feed, supplementing fermented feed, eliminating mycotoxins and other measures. Using arginine, chromium, L-carnitine, resveratrol, sodium stearoyl lactate and other feed additives for sows to improve reproductive efficiency, increase number of live births, birth weight and weaning weight. Popularize fine breeding technology of breeding boar, improve qualified rate of high-quality boar semen, and ensure supply of high-quality and safe boar semen. Accelerate the application of bio-fermented feed, produce new fermented raw materials and fermented compound feed, improve intestinal micro-ecological balance, reduce piglet diarrhea rate and improve sow reproductive performance.

VI. Promoting alternative products and technical applications of growth-promoting antibacterial drugs

After withdrawal of growth-promoting antibiotics, in order to reduce the incidence of diarrhea and improve survival rate, farms should start with feed preparation, nutrition regulation, feeding management and other aspects, take targeted comprehensive technical measures for pigs at different stages and different health conditions, and combine with the application of new high-efficiency substitute products to ensure that production efficiency does not decrease. Under the condition of normal health of pig herd, reducing the dietary protein level of 21-day-old weaned piglets to about 17% can improve piglet performance and alleviate diarrhea; when the health of pig herd is high, maintaining the dietary protein level of about 23% can achieve better growth speed. In the absence of antibacterial drugs, Bacillus subtilis, Lactobacillus plantarum, Lactobacillus reuteri, Clostridium butyricum, plant extracts, acidifiers, soy isoflavones, chitooligosaccharides and other alternative products can be selected to improve intestinal health, improve immune function and effectively reduce the incidence of diseases. Fermentation and enzymatic hydrolysis, liquid feed,"cooking + secondary granulation" or "powder + pellet" and other feed preparation methods, combined with "low protein diet + probiotics + enzyme preparation","organic acid + plant extract" and other non-anti-education feed preparation programs, can alleviate early weaning stress and improve the survival rate of piglets.

VII. Strengthen the standardized daily management of farms

Before entering pigs in farms, it is important to disinfect empty pens for more than 7 days. African swine fever virus detection shall be carried out randomly according to the proportion of 30%. Only negative piglets can enter pig farms. In the approach link, the pig transport vehicle does not enter directly. A first-level transfer point is set up about 1km away from the site to carry out first-level decontamination (cleaning the exterior, chassis and scattered pig manure of the vehicle, and then using potassium hydrogen persulfate 1:200 dilution solution to kill the exterior of the vehicle for 20 minutes) and second-level decontamination (about 500m away from the site, the driver does not get off the vehicle, and cleaning the exterior, chassis and scattered pig manure of the vehicle again. Use potassium hydrogen sulfate 1:200 dilution solution, kill outside the car for 20 minutes), transfer the piglets to the transfer platform thoroughly cleaned and disinfected in advance (medium transfer car). 3-stage disinfection before entering the nursery house, design disinfection point at the entrance of the nursery house, use potassium hydrogen sulfate 1:200 dilution solution, kill outside the car for 20 minutes, and transfer the piglets to the nursery house. Personnel must shower and change clothes when entering the pigsty. Clothes should be disinfected thoroughly to prevent cross contamination. For bagged feed, fumigate it in storage room (one-way flow) before entering pigsty, and store it for about 3 days before use. For bulk materials, non-contact conveying mode shall be selected and input into the nursery fattening shed tower. For long-term monitoring of African swine fever virus, pig oral fluid shall be collected once every 3 weeks for detection, and each batch of feed shall be sampled for detection. Strengthen environmental disinfection and epidemic prevention measures, select appropriate disinfectants, disinfect pigs once every two days, and kill pigs twice a week in the aisles and periphery of pigsty. Bird repelling devices and mosquito nets can also be installed on the periphery of pigsty. When selling pigs, foreign pig trucks are strictly prohibited from entering the production area. Pigs shall be transferred to a transfer platform 1km away for sale to prevent cross-contamination of vehicles.

VIII. Accelerate the utilization of idle stock capacity

Publicize and promote the five typical support modes of "leading small enterprises with large enterprises", encourage leading enterprises to adopt various modes such as merger and acquisition operation, lease or joint venture operation, company + farmer households (family farms), etc., guide and support small and medium-sized farm households with substitute breeding ability to speed up the increase of breeding pens, solve the current situation of insufficient fattening ability of large breeding enterprises at the present stage, and realize mutual promotion and win-win situation between large enterprises and small and medium-sized farm households. Give full play to the technological and capital advantages of leading enterprises, help small and medium-sized farm households to improve the prevention and control capacity of African swine fever, and realize pig loading and production through the transformation and upgrading of key links such as physical enclosure wall, secondary washing and disinfection, transfer station, etc. Entering the hot and rainy season, the outdoor construction of farm construction will be affected to varying degrees. Enterprises with conditions can adopt industrialized methods to design and construct pig houses and accelerate the rapid production of new production capacity.

Summer temperature is high, mosquitoes are easy to breed, pig farms in addition to good pig immunity, insect repellent lamp work should also be carried out at the same time. In addition, health care for pigs should be done well at ordinary times to improve the immunity and resistance of pigs.