Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2003.2054.2057RahmanM.G. MostafizurGoswamiP. C.KhndokerM.A.M. YahiaTareqK.M. A.AliS. Z.122003624Follicles were collected from three categories of ovary obtain from local slaughterhouse. Type-I, having functional corpus luteum (CL); type-II, CL is in almost regressed condition and type-III without CL. The average number of follicles per ovary was 4.37, 5.28 and 6.48, respectively. Significantly higher (p<0.01) number of follicles was obtained from type-III ovaries. The cumulus-oocyte-complexes (COCs) collected from each follicle further classified into 4 grades. The average number of grade-A COCs was 1.71, 2.85 and 3.57 for type-I, type-II and type-III, respectively. Significantly higher (p<0.01) number of grade-A and B COCs was obtained from type-III ovaries. The number of grade C COCs was not varied significantly (p<0.01) among the type. Grade-D COCs was in significantly (p<0.01) higher number in type-III ovaries as an exception of the usual expectation. Considering the diameter of the follicles, no significant (p<0.01) variation was found in the number of follicles measuring between <2 mm and >6 mm diameter in three types of ovary. Grade-A and grade-B COCs collected from 2-6 mm diameter of follicles are usually used for IVM, IVF and IVC experiment. Significantly (p<0.01) higher number of follicles of 2-6 mm diameter was found in type-III ovaries. On the other hand, irrespective of the types of ovaries, grade-A and B of COCs were found to be significantly higher (p<0.01) in follicles of 2-6 mm diameter.]]>Alm, H. and H. Torner,1994In vitro maturation of horse oocytes.]]>42345349Fortune, J.E.,199450225232Ginther, O.J., M.C. Wiltbank, P.M. Fricke, J.R. Gibbons and K. Kot,19965511871194Hafez, E.S.E.,19936th Edn.,pp: 69-143pp: 69-143Hashimoto, S., K. Saeki, Y. Nagano, N. Minami, M. Uamada and K. Utsumi,1998in vitro maturation on the developmental competence of bovine oocytes.]]>4914511463Hinrich, K., D.F. Kenney and R.M. Kenney,199034107112Rath, D., H. Niemann and T. Tao,1995In vitro maturation of porcine oocytes in follicular fluid with subsequent effects on fertilization and embryo yield in vitro.]]>44529538Savio, J.D., L. Keenan, M.P. Boland and J.F. Roche,198883663671Snedecor, G.W. and W.G. Cochran,19807th Edn.,pp: 271-273pp: 271-273Steel, R.G.D. and J.H. Torrie,19802nd Edn.,Pages: 633Pages: 633Totey, S.M., C.H. Pawshe and G.P. Singh,1993In vitro maturation and fertilization of buffalo oocytes (Bubalus bubalis): Effect of media, hormones and sera.]]>3911531171Webb, R., B.K. Campbell, H.A. Garveric and J.G. Gong,1999543348Yamauchi, N., Y. Fukui and T. Nagai,1999in vitro maturation in the presence of cysteamine.]]>61828833