The daily control of the milk provides the farmer information on the amount and grades of milk. The analysis of the number of cells and urea (NPN) are also valuable details greatly appreciated. The milk control is an indispensable tool for the management of the herd. The farmer can provide for his individual cows a balanced diet based on the milk production fat, protein and milk urea. The number of cells gives a good indication on the health of the udder and milk quality. The number of cells provides a good indication on the health of the udder and milk quality.
The referencing method used to control officially the milk production is named A4 and is recommended by ICAR. The interval between checks is 31 to 37 days, on average 34 days with two consecutive weighings.
The second method used by the milk producers is the method AT4, a control system with only one weighing in alternation the morning during one month and the evening during the next month.