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Open Access Toxicological effects of diclofenac in four avian species

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The objective of the present study was to investigate the toxico-pathological effects of diclofenac in different avian species including broiler chicks (Gallus gallus, 15 days old), pigeons (Columba livia, 3 months old), Japanese quail (Coturnix japonica, 4 weeks old) and mynah (Acridotheres tristis, independent young). For each species, five groups each containing 10 birds were maintained and administered diclofenac sodium orally at dose rates of 0, 0.25, 2.5, 10 and 20 mg/kg body weight, respectively, for seven consecutive days. Clinical signs in all species included depression, somnolence, decreased body weight and mortality. Severity of clinical disease increased in a dose-related manner and was most severe in broiler chicks, followed by pigeons, Japanese quail, and was least severe in mynah. Serum creatinine levels were elevated in all species. Serum urea levels varied non-significantly in broiler birds, significantly decreased in pigeons and significantly elevated in Japanese quail and mynah. Broiler chicks and pigeons administered 10 and 20 mg diclofenac/kg had visceral gout; however, this was not observed in Japanese quail and mynah. The kidneys and liver were enlarged in all species. Histologically, the kidneys of all species showed acute renal necrosis and the livers had fatty change and necrosis of hepatocytes. The kidneys and liver of broiler chicks and pigeons given 10 and 20 mg/kg diclofenac also exhibited uric acid crystal aggregates (tophi) and associated lesions in the parenchyma.
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Document Type: Research Article

Affiliations: 1: Department of Veterinary Pathology, University of Agriculture, Faisalabad, Pakistan 2: Department of Physiology and Pharmacology, University of Agriculture, Faisalabad, Pakistan

Publication date: June 1, 2008

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