Show milk testing traced to michigan farmers by louis sellers forty years ago a few progressive lairy farmers in michigan organized the first cow testing association in the united states they wanted to improve the profitableness of their herds they hired a tester to weigh f part of the increase in production can be credited to progressive michigan dairy farmers and test the milk of each cow and to keep a record of her teed feed cost and income they wanted that information so they could cull the low producers from their herds and teed feed the rest more economically in the first four years of their pioneer effort these michigan farmers doubled the average profit per cow since then thousands of other dairy farmers have followed their example with equally striking results |