CAN SAMPLING TECHNIQUE ALTER MUN VALUES?
Yes, MUN tends to be highest in first milk and lowest at the end of milking so it is critical that the sample be mixed properly before being poured into the vial. The preferred method is to pour the sample from the first meter tube into a second tube and then back to the first tube. Swirling the sample does not adequately mix the sample and will result in higher fat and lower MUN scores if only the milk from the top of the meter is used. A properly mixed sample provides a more representative measure of the entire milking.
