Productive and reproductive performance of a buffalo herd, located at Paracuru, west cost of Ceará State, were evaluated. Animals were raised in feedlot conditions, with two daily milking. Data from 87 Murrah dams breed, collected from 1984 to 1998 were analysed. The statistical analysis was carried out by GLM procedure (SAS, 1990), fitting a mixed linear model. The observed means for total milk yield, lactation length, milk yield at peak, age at first calving and calving interval, were: 2130.80+535.60kg, 301.41+49.30days, 9.78+1.95kg, 1132.69+166.99days and 430.79+100.44days, respectively. High calving percentage occurred at rainy season (79.3%), while only 20.7% occurred at dry season. The effects of calving year and parturition order affected the total milk yield and milk yield at peak. The effects of year and month of calving affected the lactation length. The year of the dam birth affected the age at first calving. The month of the previous calving, besides the effects of the month within calving year and month of dam birth affected the calving interval.
buffalo; age at first calving; calving distribution; calving interval; milk yield
