. Animal husbandry. Livestock. DIGESTIBILITY 25 amounts represents the amount digested. From these data it is easy to determine the percentage of digestible nutrients in a feeding stuff. The relative values of feeds may be found by comparing the amounts of digestible nutrients which they contain as shown by the tables in the Appendix. Factors Influencing Digestibility. — There are many factors which influence the digestibility of feeds. The most common of these are: 1. The relative amounts of the different nutrients. Feeds high in crude fiber and low in nitrogen free extract, such as coarse fo
. Animal husbandry. Livestock. DIGESTIBILITY 25 amounts represents the amount digested. From these data it is easy to determine the percentage of digestible nutrients in a feeding stuff. The relative values of feeds may be found by comparing the amounts of digestible nutrients which they contain as shown by the tables in the Appendix. Factors Influencing Digestibility. — There are many factors which influence the digestibility of feeds. The most common of these are: 1. The relative amounts of the different nutrients. Feeds high in crude fiber and low in nitrogen free extract, such as coarse fodders, are low in digestibility, while those low in crude fiber and high in nitrogen free extract, such as con- centrates, are high in digestibility. 2. The maturity of the plant. The stage of maturity has an effect upon the digestibility of roughages. The younger the plant, the higher the digestibility. This is due in a measure to the fact that as the plant advances in age, the crude fiber becomes more woody and harder for the diges- tive juices to dissolve. But the amounts of starch and sugar also increase, so that the total amounts of digestible material increase as the plant approaches Fig. 6. — Grinding and cutting machines used to increase digestibility of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tormey, John Lawless, 1881-; Lawry, Rolla Cecil, 1884- joint author; Hatch, K. L. (Kirk Lester), 1871-. New York, American Book Co
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