Show profitable cows raised from purebred pure bred sires when scrub sires are directly compared to purebred pure bred sires the evidence Is always greatly in favor of the pure bleds two cow testing associations in wisconsin have recently published comparisons in one association tion cows cowa sired by grade bulls averaged 1448 pounds butterfat butterf at those by purebred pure bred ores pounds in the second association the grade sires daughters produced pounds butterfat hutter tat per year as compared to pounds per cow for or those sired by purebred pure bred sires eighty pounds more butter at 40 cents a pound means per cow per conr ear or for each ten tea heifer belfer calves produced which means to be credited to the purebred pure bred sire for two years use it lie sired ten helfers elfers li per year since it requires about pounds butter pe per cow to break even no profit was made on the I 1 daughters of the grade sires and I 1 the owners who used these sires had low wages it if any for their labor charles L bray colorado agriculture agricultural college |