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Abstract

Transrectal ultrasonography and observation of oestrus was carried out on a herd of 40 Nguni cows managed under extensive range conditions. In 30 oestrous cycles, the duration of standing oestrus averaged 25.4 h, and the interval between the end of oestrus and ovulation averaged 12 h. The mean...

Author(s)
Augusto, L.; Weitze, K. F.; Otto, F.; Maciel, S.; Tomo, P.
Citation
Reproduction in Domestic Animals, 1997, 32, 6, pp 303-307