. 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. MAINTAINING FARM ANIMALS 59 periods on a diet containing no fresh vegetables or meat, scurvy is apt to result, even tho an abundance of the common nutrients is fur- nished. The addition to the diet of fresh vegetables readily prevents this disease. In districts of the Orient where the inhabitants live mainly on polished rice, there is often found a serious disease known as beri-beri, characteriz
. 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. MAINTAINING FARM ANIMALS 59 periods on a diet containing no fresh vegetables or meat, scurvy is apt to result, even tho an abundance of the common nutrients is fur- nished. The addition to the diet of fresh vegetables readily prevents this disease. In districts of the Orient where the inhabitants live mainly on polished rice, there is often found a serious disease known as beri-beri, characterized by general weakness and even paralysis. "Where unpolished rice, carrying the germ and part of the husk, is eaten instead, this disease is not found. In experiments by various scientists a similar condition' has been produced in animals fed almost exclusively on polished rice, while the unpolished grain did not have such an effect. Tho many attempts have been made to determine the. Fig. 16.—Commonly Unappreciated Substances Are Needed for Growth Both rats were fed "balanced rations" containing an abundance of suitable pro- tein and mineral matter. The rat on the right, given butter fat in addition, grew thriftily, while the one on the left, fed cottonseed oil, which lacks the mysterious substance present in butter fat, failed to grow. (From McCollum, Wisconsin Station.) mysterious substance in the rice husk or germ which exerts such a marked influence on health, but little is yet known regarding its composition. Another important development in recent years has been the find- ing that some of the substances included in the ether-extract, or so-called "fat," of feeds are necessary to the well-being of animals. Animals fed upon feeds which contain an insufficient amount of these unknown substances fail to grow and eventually die. If there is added to the same ration some food which is rich in these materials, such as butter fat, for example, normal gr
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfeeds, bookyear1917
