The present study aimed to evaluated the effect of follicular size on some biochemical and hormonal profiles in serum of non pregnant dromedary she camels. During breeding season a total of 15 apparently healthy dromedaries she camels suffering from long calving interval extended to more than two years. Ultrasound examination of these animals were classified the
animals into two groups according to follicular size, group 1 (n=10) with small sized follicle (2-4mm), group 2 (n= 5) with large sized follicles (10-20 mm).The blood was collected separately from each she camels with small and large follicles to estimate the changes in metabolic (glucose; cholesterol), hormonal (estradiol, progesterone, thyroid hormones) and ionic (ionic calcium; selenium). The result of this study revealed significant (p<0.05) increase in glucose, cholesterol,ionic calcium (Ca+2) and selenium with increasing follicle size. Camels with small follicles had lower (p<0.05)serum progesterone,17 β estradiol and triiodothyronine (T3) than those with large follicles. Follicular size had non significant effect on serum T4 levels