Relationship between plasma thyroid hormones and some biochemical parameters in Iranian Sarabi calves |
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Authors: | Behrad Eshratkhah Mohammad Reza Sabri Nahand Shahram Pour Rasoul Seyyed Mohammad Reza Seyyed Taj and Hosein Jafari Rad |
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Institution: | (1) Department of Clinical Sciences, Faculty of Veterinary Medicine, Islamic Azad University, Shabestar Branch, 53815-159 Shabestar, East Azarbaijan, Iran;(2) Faculty of Veterinary Medicine, Islamic Azad University, Shabestar Branch, Shabestar, East Azarbaijan, Iran |
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Abstract: | The thyroid gland has some important endocrine hormones that regulate basal metabolism in various tissues of domestic animals.
Thyroid hormones have a central role in animals’ development and their tissue functions. In this study, the relationship between
the plasma thyroxine (T4), triiodothyronine (T3), free thyroxine (fT4), free triiodothyronine (fT3), triglyceride, cholesterol, glucose, total protein, and albumin concentrations as well as albumin/globulin ratio in different
ages of Iranian Sarabi calves was investigated. Blood samples were collected from the jugular vein of 47 clinically healthy
calves free from internal and external parasites (grouped according to their age—1–14 days, 1–2, and 3–6 months) in early
of winter. The level of thyroid hormones was determined by chemiluminescence, and other parameters were measured by spectrophotometry
using commercial kits. Our data from this study indicates that there was no significant difference and correlation in all
the studied parameters between age groups and sexes. But we found a significant correlation between plasma T4 and total protein (P < 0.05, r = 0.600), T4 and albumin (P < 0.05, r = 0.575), T3 and fT3 (P < 0.05, r = 0.610), T3 and total protein (P < 0.01, r = 0.725), T3 and glucose (P < 0.01, r = 0.685), and fT4 and fT3 (P < 0.05, r = 0.609) concentrations as well as between total protein and albumin/globulin ratio (P < 0.01, r = −0.783). |
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