. Feed e abbreviata di alimentazione : l'essenziale dell'alimentazione, la cura e la gestione di animali da fattoria, compreso il pollame : adattato e condensati da alimentazioni e alimentazione (XVI ed.). Alimenta; nutrizione animale. 30 alimenta e alimentazione, abbreviata. stomaco in piccole quantità, ma quasi tutti i carboidrati sono portati su nel piccolo intestino. Qui l'amido che sfuggito essendo sollecitato nella bocca o nello stomaco è trasformato in zucchero di malto da amilasi, un enzima del succo pancreatico. Il composto di canna, malto, e zuccheri del latte sono poi suddivise in semplici glucosio- come zuccheri dall'azione del invertases,

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. 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. 30 FEEDS AND FEEDING, ABRIDGED. stomach in small amounts, but nearly all the carbohydrates are carried on into the small intestine. Here the starch which escaped being acted upon in the mouth or stomach is changed into malt sugar by amylase, an enzyme in the pancreatic juice. The compound cane, malt, and milk sugars are then split into simple glucose- like sugars by the action of the invertases, en- zymes in the intestinal juice. These simple, glucose-like sugars, which are the only carbo- hydrates that can be used in the body, are ab- sorbed thru the walls of the small intestine, and, entering the capillaries, pass into the veins and thence to the liver. Here they are for the most part withdrawn from the blood and temporarily stored in this organ as glycogen, a carbohydrate which is closely related to starch and, having the same percentage composition, is sometimes called animal starch. Normally from 1.5 to 4.0 per ct. of the weight of the liver consists of glycogen. The glycogen stored in the liver is gradually changed back into glucose, and then given out to the system as required, the amount of glucose in the blood being kept at about 1 part in 1, 000. In addition to the liver, all the tissues of the body, especially the muscles, have some power to change glucose into glycogen. The cellulose and pentosans in the feed are attacked by bacteria in the first three stomachs of ruminants, in the caecum of horses, and to some extent in the large intestine of other animals. These bacteria break down the cellulose and pentosans into organic acids and also gases (marsh gas, carbon dioxid, and hydrogen), heat being produced in the process. The gases are of no value but the organic acids serve as food the same as sugars. Digestion and absorption of protein.—The proteins of t

Parole chiave associate all'immagine

• bookcentury1900
• bookdecade1910
• booksubjectfeeds
• bookyear1917