A Survey on Electrocardiographic Parameters in Broiler Chickens Following the Intracerebroventricular Injection of Melatonin
Publish place: Iranian Journal of Veterinary Surgery، Vol: 14، Issue: 2
Publish Year: 1398
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJVS-14-2_010
تاریخ نمایه سازی: 8 خرداد 1403
Abstract:
Objective- The pineal gland and its principal hormone melatonin play an important role in the circadian organization in birds. However, little is known about the role of melatonin in cardiac activity of broiler chicken. The aim of this study was to assess the impact of intracerebroventricular injection of melatonin in electrocardiographic parameters, heart rate and mean electrical axis in broiler chickens.Design- Experimental study.Animals- Forty male Ross broiler chickensProcedures- Ross broiler chickens received intracerebroventricularly (ICV) melatonin. All ECGs were standardized at ۱ mV = ۲۰ mm, with paper speed of ۵۰ mm/sec. Leads І, ІІ, ІІІ, aVR, aVL and aVF were recorded.Results- Injection of melatonin (۲۰۰ nmol) increased the duration of T wave and QRS complex and declined the heart rate as compared to the control group (p<۰.۰۵). Mean electrical axis, calculated from leads ІІ and ІІІ, did not differ between groups and it was between -۹۳° and -۹۹° in all chickens.Conclusion and clinical relevance- Exogenous melatonin intracerebroventricularly results in sinusoidal bradycardia in broiler chicken
Authors
Majid Taati
Department of Basic Sciences, Faculty of Veterinary Medicine, Lorestan University, Khoramabad, Iran
Hassan Norouzian
Department of Basic Sciences, Faculty of Veterinary Medicine, Lorestan University, Khorramabad, Iran.
Abbas Raisi
Department of Basic Sciences, Faculty of Veterinary Medicine, Lorestan University, Khorramabad, Iran.
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