<p>The milking routine and compositional quality of milk was evaluated in the Agricultural Association of Producers and Marketers of Nobsa, Iza and Tibasosa (AGRONIT), to establish if the milking routine affects the compositional quality of milk, the study area were collection centres of Nobsa and Iza with 35 and 42 associates respectively, for a total of 77 associates, these have animals of Norman, Holstein and their respective crossbreeds, fed with kikuyu grass, carrots, potatoes and water in some of the farms they are administered cattle food and salt in some cases; Sample collection was carried out to assess the compositional quality of milk, in each farm 3 bovines were taken as a production stage, for a total of 162 animals, the percentage of mastitis was established through routine milking checklists and the California mastitis test (CMT), after the visits, a descriptive statistical analysis was carried out by means of percentages to the milk composition tests, throwing 2.96% (2.93% - 2.99% 95% CI) of protein, 4.60% (4.41% to 4.79% 95% CI) of fat and 4.67% (4.62-4 , 72 95% CI) of lactose, indicating that the values obtained by AGRONIT are higher than those reported in the standard, establishing that the milk collected by the association is of quality, suitable for human consumption.</p>