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4/15/2016 Piglet diarrheas: a common problem explained | 20160408 | WATTAgNet
http://www.wattagnet.com/articles/26520pigletdiarrheasacommonproblemexplained?utm_source=KnowledgeMarketing&utm_medium=Enewsletter%20G… 1/11
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4/15/2016 Piglet diarrheas: a common problem explained | 20160408 | WATTAgNet
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4/15/2016 Piglet diarrheas: a common problem explained | 20160408 | WATTAgNet
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Home » Piglet diarrheas: a common problem explained
Piglet diarrheas: a common problem explained
Careful monitoring of piglets is essential to ensure rapid intervention. | Miroslav Misiura, Dreamstime.com
Written April 11, 2016By Zoe KayPig NutritionPig Health & DiseasePEDVSows & HogsPigletsPig WelfareWeaning & Farrowing
4/15/2016 Piglet diarrheas: a common problem explained | 20160408 | WATTAgNet
http://www.wattagnet.com/articles/26520pigletdiarrheasacommonproblemexplained?utm_source=KnowledgeMarketing&utm_medium=Enewsletter%20G… 5/11
Scours are the most common health concern of piglets, and understanding the factors involved will help producers prevent outbreaks.
Scours, or diarrhea, are the excretion of feces containing excess fluid. There can be a variety of causes, and therefore a multifaceted approach toprevention is necessary. Piglets are particularly vulnerable to scours as their digestive system is still immature and an upset is more easily triggered. E.coliis one of the most frequent sources, but scours can also be viral, parasitic or nutritional.
Digestive upset
In general, the reason for scouring is an imbalance in the microflora of the gut. For the digestive system to function properly, bacteria are necessary; thesebeneficial microorganisms help to breakdown the feed and produce nutrients. It is normal for a number of pathogenic (diseasecausing) organisms to alsobe present. However, any changes in the gut can upset the balance between "good" and "bad" bacteria. The result of which is abnormal secretion of liquidand electrolytes into the gut. The ability to digest and absorb nutrients is also affected along with the rate of passage through the digestive tract. Scoursmay contain mucus, undigested feed or even blood. Damage to the gut takes time to repair, and performance continues to be affected even after scouringhas ceased.
Health and production effects
One of the main results of scouring is a reduced ability to absorb nutrients. If the amount gained from the food is not enough to maintain the piglet’srequirements then it has to use its body reserves. At a time when growth rates should be high, if scouring becomes a problem, the piglets will lose weight.In the case of very young animals where reserves are small the resulting exhaustion can cause death. Similarly, dehydration caused by scours can be fatal.If the numbers of pathogenic bacteria multiply quickly they can spread from the gut or release toxins. Death can therefore occur from septicemia ortoxemia.
Pathogenic strains of E. coli are the most common cause of scouring in piglets, so strategies to minimize this threat are key.
Loss of a piglet has a significant effect on productive performance, but even if animals survive growth rates will be reduced. During scouring nutrientutilization is reduced, and later on the efficiency with which pigs utilize their food is affected. There is also an influence on longterm health, as secondaryinfections can occur — pneumonia, for example. Animals that have been weakened by scouring may be more susceptible to future disease challenges.
Types of scouring
Bacterial: A number of bacteria can be responsible for scours; common culprits are E. coli, Salmonella and Campylobacter.Viral: Rotavirus and reovirus can result in scours, along with swine fever and transmissible gastroenteritis.The porcine epidemic diarrhea (PED)virus and the PRRS virus also cause scouring.Parasitic: Heavy burdens of both coccidia and worms can cause scouring.Dietary or nutritional: Any change in feed can cause scours. Differences in the nutritional specification or material quality can result in digestiveupset. Introduction of a new ingredient or even variation in the quantity of feed supplied can also be responsible. Contamination of feed or wateralso has the potential to affect gastrointestinal function.
Peak times
The causes, severity and symptoms of scours are dependent on the age of the piglet. For example, baby pig scours are characterized by lightcolored, foulsmelling liquid scour, which may result in several deaths in a litter. This commonly occurs soon after birth; piglets appear listless and may huddle together.
Diarrhea that occurs at two to three weeks of age is often called preweaning or milk scours. Although not normally associated with high mortality, it doesresult in significant growth setbacks. The immunity acquired from the colostrum has fallen to low levels by this time, although antibodies in the milkoffer some protection to the gut.
Treatment
Antibiotic treatment may be necessary for serious cases of scouring. Rehydration therapy, in the form of electrolyte addition to the water, is effective. Anoversupply of milk can exacerbate the problem, in which case feed intake for the sow could be reduced during an outbreak.
4/15/2016 Piglet diarrheas: a common problem explained | 20160408 | WATTAgNet
http://www.wattagnet.com/articles/26520pigletdiarrheasacommonproblemexplained?utm_source=KnowledgeMarketing&utm_medium=Enewsletter%20G… 6/11
Ensuring adequate intake of colostrum is important in preventing scours. | Stewairns, Dreamstime.com
The option to move or segregate litters as well as putting piglets in a sickbay can help to reduce the spread of scours. Fostering of piglets from sows withlarge litters or not enough milk will prevent them becoming too weak. Using an E. coli vaccination before farrowing is a sensible consideration,particularly if there has been a problem in the past.
Prevention
Antibodies from the sow in the form of colostrum are important in preventing scours. Therefore, ensuring that all piglets are suckling well in the first threedays of life is very important. This is dependent on both the health of the sow and her piglets. Weak or small piglets may not have the energy to suck orthere may not be enough viable teats for the whole litter. Piglets born to sows that aren’t producing enough milk (agalactia) are also at high risk. Otherconditions that predispose piglets to scouring include anemia and pneumonia.
What causes secretory or nutritional diarrheas in piglets?
While is it important to get piglets eating feed, it must be remembered that their digestive systems are immature and better suited to consuming milk. Dietsshould contain easilydigestible ingredients, and changes to the composition should be minimized. Undigested feed in the gut creates a breeding groundfor pathogens, particularly E. coli.
Making hygiene in the farrowing house a priority will help to reduce the infection pressure. The application of an allin, allout system often makes thiseasier to achieve. Conditions should minimize stress, as this along with other diseases will predispose piglets to scouring. For example, the creep areashould be safe, clean, warm and dry.
Conclusions
Pathogenic strains of E. coli are the most common cause of scouring in piglets, so strategies to minimize this threat are key. In terms of digestive stabilityany sudden changes to feed, water or environment should be avoided. To ensure an adequate intake of quality colostrum, sows should be healthy atfarrowing and have had adequate opportunity for exposure to pathogens present on the farm. For the piglets, careful monitoring and rapid intervention willhelp to reduce mortality.
Zoe Kay is an independent consultant providing technical services to the animal health and nutrition industry. She can be reached [email protected].
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4/15/2016 Piglet diarrheas: a common problem explained | 20160408 | WATTAgNet
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Kevin • 8 hours agoDear Zoe, what do you think about the use of tannins to prevent/treat piglets diarrhea?RegardsKevin
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