. Feeds and feeding abridged : the essentials of the feeding, care, and management of farm animals, including poultry : adapted and condensed from Feeds and feeding (16th ed.). Feeds; Animal nutrition. 82 FEEDS AND FEEDING, ABRIDGED III. Wool Production Composition of wool.—Aside from moisture and dirt, "wool" is made up of pure wool fiber and yolk, the latter including the suint and the wool fat. The wool fiber is practically pure protein, and is of the same chemical composition as ordinary hair, but differs in being covered with minute overlapping scales. The suint, chiefly compose
. Feeds and feeding abridged : the essentials of the feeding, care, and management of farm animals, including poultry : adapted and condensed from Feeds and feeding (16th ed.). Feeds; Animal nutrition. 82 FEEDS AND FEEDING, ABRIDGED III. Wool Production Composition of wool.—Aside from moisture and dirt, "wool" is made up of pure wool fiber and yolk, the latter including the suint and the wool fat. The wool fiber is practically pure protein, and is of the same chemical composition as ordinary hair, but differs in being covered with minute overlapping scales. The suint, chiefly composed of compounds of potassium with organic acids, comprises from 15 to over 50 per ct. of the unwashed fleece, being especially high in the Merino breed. As suint is soluble in water, most of it is removed by washing the unshorn sheep or the fleece, and less is present in the wool of sheep exposed to the weather. The fat, often incorrectly called yolk, is a complex mixture of fatty sub- stances, insoluble in water, and may make up from 8 to 30 per ct. of the weight of a washed fleece. Requirements for wool production.—Owing to the large amount of protein stored by sheep in their fleeces, their rations should contain somewhat more protein than rations for cattle or swine at the same stage of maturity. This is taken into consideration in the various feeding standards for the different classes of animals. (See Appendix Tables IV and V.) With ewes which are either pregnant or suck- ling lambs, there is a double demand for food pro- tein, which makes a liberal supply especially ad- visable. When sheep are fed insufficient food to maintain their weight, the yield of wool is considerably di- minished. On the other hand, the production of wool fiber and wool fat is practically no greater when a full-grown sheep receives a liberal fatten- ing ration than when it is maintained in ordinary condition. Feeding lambs liberally produces a larger body and consequently a heavier fleece. The s
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