Uterine involution and reinitiating of the ovarian cyclicity postpartum in female buffaloes (Bubalus bubalis)

To assess the involution period and reinitiating of the ovarian cyclicity in postpartum female buffaloes, 30 cows buffaloes of similar breed predominance, were randomly selected from a flock of 240 adult animals found in a commercial farm situated in Colorado, Mara county, Zulia state. A transrectal palpation exam was carried out between the 16th and 66th days postpartum to determine the involution uterine degree and the ovarian structures. The following results were obtained: the cervix measured from 4.78 cm +/- 1.18 cm (min: 3, max: 7) to 3.51 cm +/- 0.57 (min: 2, max: 4), with a correlation of r-0.37813 with postpartum days (P < 0.05) and r-0.36995 with the presence of ovarians follicles (P < 0.05); the uterine involution was reached by 70% +/- 8.36 of the animals before the 21.33 day postpartum (min:le, max: 25) and 30% +/- 8.36, on the 28.88 day postpartum (min: 26, max: 44). Postpartum days (P < 0.01), follicles (P < 0.01) and body condition at delivery (P < 0.05), had effect over the uterine involution. The reinitiating of the postpartum ovarian cyclicity was on the 44.54th postpartum day (min: 22, max: 63). The uterine involution is reached quite rapidly in this species, which is favorable from the reproduction view; an early reinitiating of postpartum ovarian cyclicity is likewise observed.