Profitable dairying; a manual for farmers, dairymen and students . t will in a general way cover the ground so thatthe reader will have a fair understanding of the subject. Milk may be briefly defined as a characteristic secretion of themammary glands. Its primary function, naturally, is for the nutritionof the young. As a food for young animals it cannot be excelled,for it contains the elements that are necessary for the building upof the tissues of the body, and it contains these elements in the properproportion. The class of animals that suckle their young are termedmammals and are nearly a
Profitable dairying; a manual for farmers, dairymen and students . t will in a general way cover the ground so thatthe reader will have a fair understanding of the subject. Milk may be briefly defined as a characteristic secretion of themammary glands. Its primary function, naturally, is for the nutritionof the young. As a food for young animals it cannot be excelled,for it contains the elements that are necessary for the building upof the tissues of the body, and it contains these elements in the properproportion. The class of animals that suckle their young are termedmammals and are nearly all four-footed animals. To this order,however, belong some animals that live in the sea, such as porpoisesand whales, which secrete a fluid Very similar to that of the milk ofland animals; but with a few exceptions all mammals are land shall, however, confine our discussion of milk in this work to thatproduced by cows, although the milk of other animals, such as sheepand goats, is used as food in different places, especially in variousparts of Daisy Grace De KolNote large udder and well developed milk veins. 15 PROFITABLE DAIRYING The glands which secrete the milk are only two in number. Theremay be one lobe to each gland, or, as in the case of the dog or swine,several. In cows these lobes are termed quarters, and there aretwo to each gland. These four quarters form what is termed theudder. These glands are separated from each other by a is, therefore, no connection between the right and left sidesof the udder. Each teat has practically its own system of cisterns,channels and cells. But there is more or less connection between thesmaller ducts in the upper parts of the lobes on the same side. It istherefore possible to get more than half as much milk from one teat, ifmilked by itself, than can be obtained when both teats are milkedat the same time. Just above each teat we find a small cavity from which therelead many small channels; these in t
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