{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,29]],"date-time":"2025-09-29T11:56:29Z","timestamp":1759146989636,"version":"3.40.5"},"reference-count":33,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2019,8,22]],"date-time":"2019-08-22T00:00:00Z","timestamp":1566432000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Animal Physiology Nutrition"],"published-print":{"date-parts":[[2019,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The present study investigated the prevalence of uroliths in fattening pigs and assessed the composition of these urinary tract concrements. In total, 2,432 urinary bladders were sampled in the slaughterhouse and checked for abnormal content. Urinary samples were analysed microscopically, and samples of the urinary bladder wall were tested for histological signs of inflammation. The composition of the concrements was examined by infrared spectrophotometry. Macroscopic and microscopic abnormalities were detected in 8.4% and 52.8% of the samples respectively. Magnesium ammonium phosphate (struvite), calcium oxalate dihydrate (COD), calcium carbonate (calcite), calcium oxalate monohydrate (COM) and amorphous crystals were detected. Analysis of stones showed COD in all samples in different proportions. The calcium content of examined stones was always considerable (up to 34%), in contrast to the magnesium content which represented max 1.9%. Struvite was found in one third of the samples, but was never part of stones and grit. COD crystals were the second most common microscopic crystal. These COD crystals and some COD stones had a rectangular shape, and therefore, they can be harmful to the bladder mucosa. In conclusion, uroliths are present in a large proportion of male fattening pigs, and consequently, urinary concrements pose a life\u2010threatening risk for urethra obstruction in male pigs. Further research is warranted to identify potential risk factors for urolithiasis and microscopic crystals.<\/jats:p>","DOI":"10.1111\/jpn.13169","type":"journal-article","created":{"date-parts":[[2019,8,23]],"date-time":"2019-08-23T06:52:41Z","timestamp":1566543161000},"page":"1828-1836","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Prevalence and chemical composition of uroliths in fattening pigs in Belgium"],"prefix":"10.1111","volume":"103","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8616-0870","authenticated-orcid":false,"given":"Joris","family":"Vrielinck","sequence":"first","affiliation":[{"name":"Veterinary Practice Ieper\u2010Elverdinge Belgium"},{"name":"Faculty of Veterinary Medicine Ghent University Merelbeke Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Steven","family":"Sarrazin","sequence":"additional","affiliation":[{"name":"Faculty of Veterinary Medicine Ghent University Merelbeke Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alexandra","family":"Schoos","sequence":"additional","affiliation":[{"name":"Faculty of Veterinary Medicine Ghent University Merelbeke Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Geert P. 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