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Physiological Response of Two Age Groups of Omani Sheep to Short Road Transportation in Relation to Circulating Levels of Gonasotropins, Cortisol, Thyroid

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Author(s): Hormones | Sex Steroids | Plasma ChemistryA. Al-Kindi | A. , I. T. Kadim | I.Y. Mahmoud | O. Mahgoub | J. Plude | M. Al-Maani

Journal: Journal of Animal and Veterinary Advances
ISSN 1680-5593

Volume: 4;
Issue: 8;
Start page: 742;
Date: 2005;
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Keywords: Omani sheep | circulating levels | gonasotropins | sex steroids | plasma chemistry

ABSTRACT
Two age groups of Omani sheep were subjected to a short period transportation under two sets of stress conditions. Blood samples were collected by jugular veinpuncture just before slaughtering and the degree of stress was related to hormone levels and blood chemistry. Chemiluminescences immunoassay technique was used to determine levels of cortisol,, gondadotropin (FSH, LH), Testosterone (T), Thyroid Stimulating Hormone (TSH) and Thyroid Hormones (T3, T4). Adrenaline, noradrenaline, and dopamine levels were determined by HPLC with electrochemical detection. In addition, plasma values of cholesterol, total protein, blood urea nitrogen (BUN3), lactate, CO Mg , PO , Ca and uric acid were also analyzed. A total of ++ ++ ++ 24 sheep were used, 12 at age of 6 months and 12 at 12 months. Each age group was randomly divided equally into control and experimental. The control sheep from each age group were transported using open truck (3X2 m) three days before they were slaughtered. The sheep were loaded at 7:00am on a 2 h journey with heavy traffic under air temperature, which varied between 30-31?C. The end of the journey, each age group was kept weparat3ly in a lairage of a commerical slaughterhouse, with food and water ad libitum. The xperimental group was subjected to the same transportation condition and with approximately the same temperate range except they were transported the same day they were slaughtered. The sheep in both age groups, which were transported the same day and then slaughtered at the end of the journey (experimental) had significantly higher cortisol value (p

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