RÉSUMÉ
A total of 120 female buffaloes 2-5 years of age were used in the present study. First group of 60 buffalo-cows represent the control group. Second group of 60 buffalo-cows diagnosed as to have inactive ovaries. Blood samples were taken at time of rectal palpation and examined for vitamin A, B. carotene, Cu, Zn, ALT and AST. The present study revealed that normal cyclic buffalo-cows had significant higher level of vitamin A and B-carotene [46.21 +/- 2.5 I.U. / 100 ml and 137.6 +/- 3.2 mg /100 ml] compared with [32.18 +/- 1.5 I.U. / 100 ml and 121.3 +/- 2,8 mg / 100 ml] of buffalo-cows suffered from inactive ovaries. Determination of trace elements levels revealed higher Cu and Zn level in blood sera of normal cyclic buffalo-cows [92.5 +/- 2.5 micro.g /100 ml and 136 +/- 5,17 mg /100 ml] than those had inactive ovaries [78.3 +/- 4.3 micro g /100 ml and 121 +/- 4.15 mg /100 ml] respectively. ALT and AST were markedly increased in buffalo-cows suffered from ovarian inactivity [42.10 +/- 3.16 U / L and 16.95 +/- 4.27 U/L] compared with normal cyclic buffalo-cows [33.12 +/- 3.17 U/L and 11.17 +/- 3.2 U / L] respectively