(2008) reported that ovulation during the first postpartum estrus
was seen at 6 to 12 days post partum.
In March, a female in captivity gave birth to three pups and the vaginal smear taken in the following day showed estrous features, thus representing a postpartum estrus
The interval for occurrence of first postpartum estrus
was recorded for all animals.
Analysis of variance (One-Way ANOVA), in conjunction with Tukey's test, was applied to analyze whether there were significant differences (p < 0.05) on hormonal levels during pregnancy; and between the number of suckled offspring and the postpartum estrus
. The total number of cows in estrus (1-202 days) tended to be different between groups (GG, 91.8%; 45/49 and CG 76.0%; 38/50, p = 0.091).
Happold and Happold (1990) identified in African bats 10 strategies, considering the presence or absence of postpartum estrus
: strictly seasonal monoestry, long-term seasonal monoestry, non-seasonal monoestry, bimodal polyestry with postpartum estrus
, bimodal seasonal polyestry, continuous and bimodal polyestry with postpartum estrus
, multimodal seasonal polyestry with postpartum estrus
, multimodal continuous polyestry with postpartum estrus
, multimodal continuous polyestry without postpartum estrus
, and non-seasonal polyestry.
Comparative effects of early weaning or once-daily suckling on occurrence of postpartum estrus
in primiparous beef cows.
To assess the interval from calving to first postpartum estrus
, data of mounting activity were collected by Heat-Watch[R] mount detectors (Ddx Inc Denver, CO, USA) fitted to all cows in the study at the initiation of the experiment.
The animal although exhibited postpartum estrus
, became a chronic repeat breeder and conceived after 7-8 cycles and delivered a normal male calf subsequently 20 months later.
Fertility and Open Days and Their Relation With Associated Factors With the First Postpartum Estrus
in Crossbred Dual Purpose Cows.
Puerperal uterine soundness is essential for early establishment of postpartum estrus
cyclicity (Tiwari et al., 2004).
Effect of biostimulation on uterine involution, early ovarian activity and first postpartum estrus
cycle in beef cows.