Over a period of three months (January to March), ovarian morphology and estradiol-17β concentrat... more Over a period of three months (January to March), ovarian morphology and estradiol-17β concentrations in serum and follicular fluid were studied in 110 Bunaji (Bos indicus) cows slaughtered at Bodija abattoir, Ibadan, Nigeria, in order to determine the reproductive state and history of such cattle. Macroscopic examination of the ovaries revealed that 70 (63.6%) of the cows were undergoing active oestrous cycle. Of these, 42 (60.0%) had large ovarian follicles of greater than 3 mm diameter, while 22 (31.4%) had corpora lutea (CL). Six animals (8.6%) had corpora haemorrhagica. Of the 22 animals exhibiting CL, 12 (54.5%) had CL of pregnancy and were with calf, while 10 (45.5%) others had those of normal oestrous cycle. Corpora albicans (CA) counts showed that 90 (81.8%) of the cows had calved at least once, the mean being 4.5 calves per cow. Fifty-eight cows (52.7%) had calved 0-2 times, 34 (30.9%) 3-5 times and 18 (16.3%) 6-8 times. The mean estradiol-17β levels in follicular fluid (1...
Over a period of three months (January to March), ovarian morphology and estradiol-17β concentrat... more Over a period of three months (January to March), ovarian morphology and estradiol-17β concentrations in serum and follicular fluid were studied in 110 Bunaji (Bos indicus) cows slaughtered at Bodija abattoir, Ibadan, Nigeria, in order to determine the reproductive state and history of such cattle. Macroscopic examination of the ovaries revealed that 70 (63.6%) of the cows were undergoing active oestrous cycle. Of these, 42 (60.0%) had large ovarian follicles of greater than 3 mm diameter, while 22 (31.4%) had corpora lutea (CL). Six animals (8.6%) had corpora haemorrhagica. Of the 22 animals exhibiting CL, 12 (54.5%) had CL of pregnancy and were with calf, while 10 (45.5%) others had those of normal oestrous cycle. Corpora albicans (CA) counts showed that 90 (81.8%) of the cows had calved at least once, the mean being 4.5 calves per cow. Fifty-eight cows (52.7%) had calved 0-2 times, 34 (30.9%) 3-5 times and 18 (16.3%) 6-8 times. The mean estradiol-17β levels in follicular fluid (1...
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