Prävalenz von Veränderungen der kutanen Magenschleimhaut bei Schlachtschweinen in der Schweiz

Abstract

A cross-sectional study was conducted at two large abattoirs in the winter 2003/04 to determine the prevalence of gastric lesions in Swiss finishing pigs. The stomachs of 1897 pigs from 107 slaughter groups were examined for macroscopic epithelial lesion of the pars proventricularis. Severe hyperceratosis, erosion, ulceration and constriction at the transition between oesophagus and stomach were described as gastric lesions. Lesions were observed in 36% of all animals, with slaughter group prevalence ranging from 0% to 94%. Ulceration or constriction was present in four percent of the examined pigs. Associations between gastric lesions, farm management data, and data obtained at ante and post mortem examinations conducted at the slaughterhouse were analysed. A significantly higher prevalence of gastric lesions was found in pigs originating from conventional housing systems compared to pigs raised on farms with 'animal-friendly' housing systems providing straw bedding and outdoor exercise to pigs. In addition, significantly higher prevalence was observed in pigs originating from herds with clinical signs of tail biting and peritarsitis.

Postweaning mortality in commercial swine production. I: review of non-infectious contributing factors

“…Additionally, treatment of finishing pigs with an anthelmintic has been associated with reduced risk of gastric ulceration ( Gottardo et al, 2017 ). While gross and histologic changes in the esophageal region of the stomach are very common with 12% to 28% of sites reporting ulcers and 30% to 90% of market pigs having visible pathology ( Robertson et al, 2002 ; van den Berg et al, 2005 ; Rodriguez et al, 2008 ; de Oliveira et al, 2010 ; Swaby and Gregory, 2012 ; USDA, 2016 ), mortality is commonly much less at an estimated 2.5% ( Doster, 2000 ). In extreme cases, mortality as high as 27% within a group of finishing pigs during a single week has been reported ( Melnichouk, 2002 ).…”

Evaluation of the prevalence of stomach ulcers in slaughtered pigs in a Swiss ­abattoir

“…For the evaluation of gastric mucosa changes in pigs, an 11-level scoring system was designed (Table 2; Figure 1), taking inspiration from multiple previously used scoring systems. 20,43,46 To make this scoring system comparable Sampling 1005 stomachs of fattening pigs from 136 slaughter groups and 87 farms were evaluated on 18 days over a period of four consecutive months in the spring of 2021 at an abattoir in Switzerland. A random sample of about 10 stomachs, originating from one herd, was taken at a time.…”

“…10 The prevalence of gastric ulcers is positively correlated to other external signs of stress such as tail biting or bursitis. 44,46 The potentially best-established cause for stomach ulcers in pigs is feed with a high proportion of finely ground material, 3,4,16,34,35 including pelleted feed. 4,16,34,35,41 This is mainly considered an effect of acid reflux from the fundic stomach part, leading to a reduction in pH in the Pars oesophagea when more finely ground material is fed.…”

“…The last study assessing the prevalence of gastric ulcers in a Swiss abattoir was performed more than 15 years ago. 46 The present study aimed to record the prevalence of gastric ulcers today in order to assess whether progress in the prevention can be demonstrated. In addition, the magnitude of the variability in stomach health of pigs across farms and the importance of the conditions prescribed by major Swiss labels were evaluated.…”

Skin Temperature of Slaughter Pigs With Tail Lesions

“…Furthermore, welfare-related lesions, such as tail damage (9,25), are associated with chronic stress (e.g., hypocortisolism) 7, which suppresses the immune system. Therefore, aside from providing an entry point for pathology, tail lesions can also contribute to an increased prevalence and duration of disease (26,27), such as gastric lesions (28), and respiratory organ inflammation and disease (6).…”