In dairy cows, of milking breeds, the drain on the system is liable to
prove too great, under a ration-for-milk, warm sloppy mashes of grains,
bran, middlings, roots, distillery swill, exclusive diet of silage,
saccharine roots, or marc, warm drinking water, a warm atmosphere,
liberal salting, and enforced idleness in the stall, with careful
stripping of the bag. The butter cows, (Jerseys, Guernseys, Alderneys,
etc.) are especially liable to suffer, as the greater the yield the more
the system is robbed of the adipose material which is so needful to a
vigorous health. When the cow has been reduced to a high-pressure milk
factory her physical size reduced to obviate the need of a large
sustaining ration, and her milking capacity stimulated to the highest
degree, the presence of the tubercle bacillus is especially dangerous.