Show uh aie e efel i fel WHAT RICHER MILK MEANS TO RAISER profit and loss affected by the quality dy DR DH W I 1 L college of at A 9 cical ture university of 0 Illin illinois WN U service producing richer milk la Is a problem now confronting many dalry dairymen men as a result of higher standards on toe the milk ilk markets and the need for more mor efficient production the quick way ot of meeting the problem Is to sell some ot of the cows giving L low ow testing milk and replace them with iowa giving a high testing product the slow way Is 13 to select bulls bulla or of high higher er testing families and gradually breed up cows producing richer milk adding one or two high testing cows cannot be expected to have much effect on herd test even cven it halt the herd were replaced the most that cou could id be expected expect Vil would be a halfway position between the cows retained and those added As a general proposition higher testing cows will fall below the midpoint mid point polut of the tha two groups As an example it if the herd contain cows cowa giving gi v ing milk testing 32 per cent butterfat it would take on the average cows giving 38 milk to bring the herd test to the halfway half halt way point of 35 85 improving the herd test through breeding Is possible within certain limits it requires continued selection over a long time an illustration of what can bo be done by this beani means Is found in the records of the danish cattle breeding societies going back to the early days of testing the native cows in these societies in 1000 gave milk testing 34 per cent butterfat butter fati 1 by continuous selection of the higher i testing and good producing cows an aa breeding stock the test has gradually been increased until it river averages 39 per cent butterfat at the present time the milk Is used very largely for ter and for that purpose it was an advantage to improve tho the fat test it takes 0 6 per cent more feed to pro duco duce a pound of fat in 34 per cent milk than it does in 30 3 9 per cent milk |