Authors:
Rita Bargaa
, Islah Lektib
, Mohamed Farh
, Najia El Abbadi
, Abdarrahmane Belhouari
,
Mohammed El Khasmi
|
Abstract:
In domestic animals, it had been well established that thyroid and adrenal gland activities and
biochemical profile show seasonal variations and are considered crucial to sustain the productive
and reproductive performances. The study was carried out to investigate the effects of season on
serum concentrations of total thyroxine (T4), total triiodothyronine (T3), cortisol (COR) and
blood biochemical parameters [calcium, phosphorus, magnesium, glucose (Glu), cholesterol
(CT), triglycerides (TG), total protein, urea, creatinine, alanine aminotransferase (ALT) and
aspartate aminotransferase (AST)], and the correlations between these parameters in camels. T4,
T3 and COR showed marked seasonal variation with a significant (P<0.05) increase during
winter and a significant (P<0.05) decrease during summer. By comparison to summer, Glu, ALT
and AST were significantly (P<0.05) higher in winter. However magnesium was significantly
(P<0.05) lower in winter by comparison with summer. A significant correlation between thyroid
hormones (TH) and COR, and between these hormones and magnesium, Glu, CT and TG was
observed, suggesting that during winter the camel is submited to cold and rutt stress. We
recommende supplying camels during the winter season by antioxidants. |
