Show some of the reasons why milk test varies you of course arse know that a cows milk gradually becomes richer as the animal reaches maturity and that a high test will be obtained during the first week ot of the lactation period and that as a cow nears the end of her lactation period her milk gradually becomes richer aside from these longtime changes there Is a possibility that an individuals milli milk may vary 2 or 3 per cent between mil bilkings kings some of the reasons for the dayto day to day variation are simple but all have more or less effect if the time between mil bilkings kings Is unequal milk tests higher following the short period most cows also test higher in cold weather it if all the milk is not drawn a lowered tests results exposure reduces the test irregularity in feeding milking or handling will reduce the test as will too much exercise when animals are tested once a month the law of averages will probably take care of any dally variation so that the estimate for the entire year Is sufficiently accurate american agriculturist |