Publications by authors named "L Rowden"

Article Synopsis
  • Sulawesi crested macaques (SCMs) are critically endangered and often experience chronic intestinal disease in captivity, with cases frequently labeled as chronic enterocolitis due to unidentified causes despite signs of intestinal inflammation.
  • This study analyzed gastrointestinal tissues from 23 SCMs, using a scoring system (Nancy index) from human medicine to assess the severity of disease, finding significant inflammation in colons of affected macaques and a correlation between the index score and clinical disease severity.
  • The research revealed that 57% of SCMs with clinical signs had moderate to severe intestinal disease, but some with rectal prolapse showed no intestinal inflammation, indicating the need for standardized histopathological evaluations in this species.
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Article Synopsis
  • Rectal prolapse (RP) is common among captive Sulawesi crested black macaques in Europe, leading to euthanasia in 28% of severe cases, with a study noting a 12.3% occurrence rate and 72% recurrence in affected animals.
  • A survey of European institutions revealed that dietary factors such as high vegetable and fiber intake, as well as male-to-female ratios, contribute to increased RP risk, while daily fruit feeding appears to reduce this risk.
  • Further research is needed on dietary impacts, genetic predisposition, and the role of stress, as well as vitamin D deficiency in relation to RP in this species.
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The blue-crowned laughingthrush (BCLT) () is a species of critically endangered passerine that is part of a Global Species Management Plan and experiences high mortality rates in some collections. Complete necropsy and medical records from 15 European institutions that housed BCLT between 1998 and 2018 were assessed to evaluate morbidity and mortality in the captive population. Medical records for 407 BCLT were received; a total of 191 morbidity events were recorded from 111 individual BCLT.

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The efficacies of three concentrations of 2-phenoxyethanol from Aqua-sed were examined to determine the suitability for euthanasia of butterfly splitfin (). Thirty fish were randomly assigned to be immersed in one of three Aqua-Sed concentrations: 0.5, 2, and 6 ml/L.

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To increase visitor footfall and engagement, zoos may host public events that may extend outside typical opening hours. With plans to hold a 2-day concert at Tayto Park, Ireland, this study aimed to identify the behavioral response to the music event of a selected group of species in the zoo. Twenty-two species were observed across three phases of the event (pre-, during, and post event).

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