Main Article Content
The objective of this work was to estimate the influence of environmental factors on milk production traits in buffalo from the herds participating in the Programa de Melhoramento Genético de Búfalos do Brasil (Brazilian Buffalo Breeding Program - PROMEBULL). The data file consisted of 80,408 dairy control data, 9,286 delivery records from 1969 to 2016, with information on total milk production corrected for 305 days (TMP), lactation length (LL) and percentage of fat (% F). Analysis of variance was performed using the SAS PROC MIXED, using fixed effects of farm, calving season (PS), farm * calving season interaction and buffalo age class at calving (CABC), and the animal as random effect. Means were differentiated using the Tukey test. The average production was 1,963.42+713.94 kg TMP, 281.71+53.89 days for LL and 7.07+0.86 % for % F, with influence of farm, farm * PS interaction and CABC; farm, PS and farm interaction * PS; and CABC for TMP, LL and % F, respectively. The phenotypic correlations were 0.32, 0.03 and 0.26 for TMP and LL, TMP and % F, and LL and % F, respectively. From the results, it was concluded that the studied characteristics show reasonable phenotypic variability, making buffalo farming a promising activity in the national scenario.