A study on acute oral caffeine intoxication and its treatment strategies in domestic pigeons (Columba livia domestica)
Publish place: Veterinary Research Forum، Vol: 13، Issue: 2
Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_VRFAN-13-2_009
تاریخ نمایه سازی: 25 آبان 1402
Abstract:
Limited knowledge is available on acute intoxication with environmental toxicants in birds. This experimental study determines features of acute caffeine intoxication and clinical outcome of different treatments in pigeons. The experiment was performed in three phases. Toxicity tests were performed in phases one and two while phase three was dedicated to comparative evaluation of fluid therapy and activated charcoal with or without diazepam and/or propranolol on clinical outcome of birds. Calculated LD۵۰ was ۳۶۶ mg kg-۱ although presence of regurgitation compromised the accuracy of LD۵۰ application. The dose-response (death) curve was sharp with a slope of ۸.۴۱. Clinical signs included renal, neurological, gastrointestinal and respiratory symptoms that generally initiated in a few minutes and lasted for few hours. The approximate toxic dose (ATD) was ۲۹۴ mg kg-۱. Serum and brain concentrations after administration of ATD followed a normal distribution in a range of ۱۴.۶ - ۸۳.۳ mg mL-۱ and ۱.۰۴ - ۷.۸۱ µg g-۱, respectively. Fluid therapy and activated charcoal with or without propranolol did not affect the clinical outcome of intoxicated birds while adding diazepam and intensive therapy with all of these agents even worsened the situation. In conclusion, caffeine is a potential source of intoxication in pigeons with a fast onset of clinical signs and a sharp increase in death rates by increasing doses. Symptoms are similar to mammals with prominent neurological signs although the ATD and serum concentrations are relatively high. Intensive therapy with above mentioned drugs is not recommended. Most birds survive after resolution of transient clinical signs without any special treatment.
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Authors
Sina Sedghi
Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
Najmeh Mosleh
Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
Tahoora Shomali
Department of Basic Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
Seyed Amir Hossein Dabiri
Department of Basic Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
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