Table 6. Technical knowledge associated with milk quality and milking routines of milkers operating mechanical milking systems in Northern Antioquia.

Variable	Frequency of compliance (%)	CFU	SCC
Milker knows the proper condition of the udder at milking.	78	*
Milker knows the proper condition of the cow tail at milking	91
Milker knows how cows should be walked to the milking site.	98
Milker knows the importance of milk 'stripping' into a black background.	72
Milker knows how to handle very dirty cows at milking.	52
Milker knows what to use to dry the udder.	72
Milker knows how to attach the teatcups.	67
Milker knows the post-milking routine.	98
Milker knows the post-milking dipping process.	74
Milker has a good relationship with his boss.	98
Milker´s boss has a good attitude towards the milker.	96

* Significance level (p<0.05).