. Cyclopedia of farm animals. Domestic animals; Animal products. CATTLE CATTLE 311 of connective tissue in which there is deposited more or less fat. The prime, but by no means indispensable incen- tive to the secretion of milk, is the birth of young by the animal. Cases are not uncommon in which milk has been secreted by virgin animals, and. f Fig. 337. Fig. 336. A well-formed udder. A poorly formed udder instances are on record in which it has even been secreted from the rudimentary glands of the male. For some time before the birth of the young, the udder takes on a gradual enlargement, whi
. Cyclopedia of farm animals. Domestic animals; Animal products. CATTLE CATTLE 311 of connective tissue in which there is deposited more or less fat. The prime, but by no means indispensable incen- tive to the secretion of milk, is the birth of young by the animal. Cases are not uncommon in which milk has been secreted by virgin animals, and. f Fig. 337. Fig. 336. A well-formed udder. A poorly formed udder instances are on record in which it has even been secreted from the rudimentary glands of the male. For some time before the birth of the young, the udder takes on a gradual enlargement, which increases rapidly for a few hours, or occasionally a day or two before birth. In case of the cow, milk usually appears in the udder before the birth of the calf, but not often to any very great extent. Immediately after birth, there can usually be drawn from the udder, several quarts of milk, which is, however, quite distinct in character from that secreted later. This first milk is known as colostrum. It is thicker, denser and more viscous and higher colored than normal milk. It is charac- terized by a much less content of water, by the fact that the fat is variable and sometimes much higher, but often considerably lower than that of normal milk; but chiefly by the character of the proteids. Colostrum milk contains large amounts of albumin and comparatively small amounts of casein. It also contains a greater or less number of microscopic bodies known as colostrum corpus- cles, which are supposed to represent the contents of the recently broken down tissue, and in some cases the colostrum contains more or less of tissue debris. Colostrum has a more pronounced odor and flavor than the normal milk, and is considered unfit for con- sumption or manufacture. It cannot, how- ever, be considered in any sense injurious, and it has a laxative effect which makes it particularly useful for the young animal. It is unfit for manufacture into butter and cheese mainly because of the mechan
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