ABSTRACT
To evaluate the concentrations of serum lipids and lipoproteins and their correlations together and with thyroid hormones in gray necked ostrich [Struthio camelus], the serum levels of cholesterol, triglyceride, total lipids, very low density lipoproteins [VLDL-cholesterol], low density lipoproteins [LDL-cholesterol] and high density lipoproteins [HDL-cholesterol] and their correlations with tri-iodothyronine and thyroxine hormones were measured in 50 clinically healthy gray necked ostriches [30 male and 20 female] which were divided into three age groups. The mean serum concentrations +/- SE of cholesterol, triglyceride, total lipids, HDL-cholesterol, LDL-cholesterol and VLDL-cholesterol were 102.62 +/-30.23, 120.22 +/-54.25, 458.96 +/- 106.37, 29.96 +/-6.737, 48.61 +/-23.11 and 24.04 +/- 10.85 mgr/dL, respectively. Also, the mean serum concentrations +/- SE of thyroxin and tri-iodothyronine hormones were 7.89 +/- 1.52 microg/dL and 2.54 +/- 1.31 ngr/mL, respectively
The mean serum concentration of the cholesterol, total lipids and T3 had a negative significant correlation and age [r = -0.340, P=0.016], [r = -0.335, P=0.017], [r = -0.282, P=0.047], and a marginally negative significant correlation was detected between HDL-cholesterol with age [r = -0.271, P=0.056]
Serum thyroxine and tri-iodothyronine had no significant correlation with the lipids and lipoprotein concentrations [r = -0.115, P=0.083], [r = -0.187, P=0.070]?