Fecundity of the Lagune Cow in Benin. Age at first calving and Calving Intervals

Data collected from 1987 to 2003 at the Samiondji farm in Benin were used to study the age at first calving (n = 200) and calving intervals (n = 805) in the Lagune cow. The age at first calving was 1373 ± 180 days (4 ± 0.5 years) and calving intervals were 426 ± 85 days (14 ± 2.8 months). The year of calving, season of calving and lactation rank significantly influenced calving intervals, whereas only the birth year had a significant effect on the age at first calving