Rapid systematic review and meta-analysis of the evidence for effectiveness of primary production interventions to control Salmonella in beef and pork

Maternal vaccination as aSalmonellaTyphimurium reduction strategy on pig farms

“…The persistent and frequently asymptomatic nature of porcine Salmonella infection and the organism's abilities to colonize other animal species and to survive in the environment mean that effective control of subclinical Salmonella infection generally requires multiple approaches applied simultaneously, although clinical salmonellosis can usually be markedly improved by vaccination alone, as demonstrated in the current study (Wilhelm et al . ; Wales and Davies ). Vaccination may assist in the protection of animal health, reduction of antibiotic usage, enhancement of food safety as well as reduction of economic losses and environmental contamination associated with faecal waste and run‐off and transmission of Salmonella to other food animal species, such as poultry, by wildlife vectors (Andrés‐Barranco et al .…”

“…; Wilhelm et al . ). This study was novel in that the trial was run under controlled field conditions, using a large number of studied animals, and focusing on farms with an existing Salmonella problem.…”

“…In summary, control measures against Salmonella infection can be divided into five broad interventions: biosecurity, feed management, acidification of feed or water, manipulation of gut microbiota and vaccination (Andres and Davies ; Wilhelm et al . ). Wilhelm et al .…”

“…Wilhelm et al . () suggest that biosecurity and vaccination seem to be the intervention categories showing the greatest potential to minimize Salmonella on an infected farm, and only culling of infected pigs can totally eliminate infection. However, in most countries, a source of Salmonella ‐free replacement pigs is not available and the risk of re‐infection is high (Wales and Davies ).…”

“…The persistent and frequently asymptomatic nature of porcine Salmonella infection and the organism's ability to colonize other animal species, such as rodents and wild birds on farms, and to survive in the environment means that effective control generally requires multiple measures (Wales and Davies 2017). In summary, control measures against Salmonella infection can be divided into five broad interventions: biosecurity, feed management, acidification of feed or water, manipulation of gut microbiota and vaccination (Andres and Davies 2015;Wilhelm et al 2016). Wilhelm et al (2016) suggest that biosecurity and vaccination seem to be the intervention categories showing the greatest potential to minimize Salmonella on an infected farm, and only culling of infected pigs can totally eliminate infection.…”