1Department of Veterinary Biochemistry, College of Veterinary Science and Animal Husbandry U.P. Pandit Deen Dayal Upadhyaya Pashu-Chikitsa Vigyan Vishvavidyalya evam Go Anusnadhan Sansthan, Mathura-281001, Uttar Pradesh
Department of Veterinary Biochemistry, College of Veterinary and Animal Science Rajasthan University of Veterinary and Animal Science, Bikaner-334 001, Rajasthan
*E-mail address: drvijaypandey@gmail.com
Online published on 23 August, 2014.
The aim of the experiment was to ascertain the influence of age on thyroid hormonal profile and their correlation with other serum biochemical parameters of goats under arid tropical environment. The study included 30 (15 males and 15 females) clinically healthy Marwari goats of different age groups (<1 Yr, 1–2 Yrs and >2 Yrs). The variations in the serum concentrations of thyroxine (T4) and triiodothyronine (T 3) were investigated in different age groups and sex and correlated with other serum biochemical parameters. Although, the serum T4 and T3 concentrations declined progressively with advancement of age in both sexes but did not differ significantly among the age groups. The male and female goats of 1–2 years of age showed significant (P<0.05) difference in levels of T3. However the serum T4 and T3 showed positive correlation with serum glucose and negative correlation with cholesterol whereas T3 was found negatively correlated with total protein. In addition, serum T4 and T3 both revealed negative correlation with urea and inorganic phosphorus in animals of 2 years and above age group. It can be concluded from the study that the circulating levels of TH is not influenced by the age of animals; however, their significant correlation with other serum biochemical indices indicates that these hormones may affect the metabolic balance in goats to allow them to adapt their metabolism to homeorhetic changes taking place during growth.
Age, Arid tropical region, Biochemical indices, Goat, Thyroid
