PARTNER FEATURE ▶▶▶
Pigs: A known source of human diseases
Salmonellosis can cause severe disease in humans. One way of ingesting Salmonella can be through contaminated pork. It is known that in pigs, Salmonella infections can get worse in stressed animals. Controlling stress levels therefore indirectly impacts public health.
BY VALERIA ARTUSO-PONTE DVM, PHD, PHYTOBIOTICS FUTTERZUSATZSTOFFE C
onsumption of contaminated food of animal origin is an important public health concern. According to the Food and Agriculture Organization in 2020, over 400,000 human deaths each year would be
related to food poisoning. Furthermore, contaminated pork has been associated with several bacterial and viral diseases in humans, including salmonellosis.
Salmonella, particularly S. enterica, is considered one of the leading foodborne pathogens worldwide. Consumption of contaminated pork has been associated with about 1% of all human salmonellosis. Furthermore, infected pigs are consid- ered the major source of carcass contamination. Therefore, on-farm control strategies are essential to minimise the risk of carcass contamination and reduce the food safety burden. In pigs, salmonellosis is generally caused by non-host–adapt- ed serovars. Animals can show mild symptoms or, most frequently, can be asymptomatic carriers, although they can shed Salmonella through the faeces for long periods, increasing the risk of spreading the infection to other animals and their carcasses. Other host-adapted serovars, such as S. Choleraesuis, can cause systemic disease, meningitis, arthritis, septicaemia and high mortality.
Stress makes it worse Several factors have been associated with the increased
Food safety is essential to make sure humans do not get diseases like salmonellosis.
28 ▶ PIG PROGRESS | Volume 37, No. 10, 2021
PHOTO: SHUTTERSTOCK
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