Informative Article | Biology | Morocco | Volume 5 Issue 12, December 2016
Effects of Cold and Intracerebroventricular Injection of Glucagon on Plasma Catecholamines in Muscovy Ducklings
Laila Lamri, Zineb Choukairi, Tahar Hazzaz, Khalid Halim, Taoufiq Fechtali
The aim of the present study was to understand the effect of cold and i.c.v glucagon administration on plasma catecholamine. Cold exposure (+4C) induces a 42 % increase of arteriel plasma norepinephrine (NE) in thermoneutral (TN) ducklings. Thus, cold has a stimulatory effect on the sympathetic nervous system (SNS). 15min after i.c.v glucagon injection plasma epinephrine (E) increase in TN ducklings, (74 %) whereas NE concentration decrease (23 %) only in TN. Plasma NE remained in glucagon treated (GT). Injection of glucagon causes a decrease in heart rate (HR) in TN duckling whereas it has no effect on GT ducklings. In conclusion, large increase in E levels in TN ducklings may be due to a massive release of adrenal catecholamine in response to cold and i.c.v glucagon administration. Treatment with glucagon twice daily rendered ducks possibly insensitive to the effect of i.c.v glucagon injection.
Keywords: Cold, icv Glucagon, Norepinephrine, Thermoneutral, Sympathetic Nervous System
Edition: Volume 5 Issue 12, December 2016
Pages: 794 - 797
How to Cite this Article?
Laila Lamri, Zineb Choukairi, Tahar Hazzaz, Khalid Halim, Taoufiq Fechtali, "Effects of Cold and Intracerebroventricular Injection of Glucagon on Plasma Catecholamines in Muscovy Ducklings", International Journal of Science and Research (IJSR), https://www.ijsr.net/search_index_results_paperid.php?id=ART20163558, Volume 5 Issue 12, December 2016, 794 - 797
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