. 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. 292 FEEDS AND FEEDING, ABRIDGED wider margin is required for winter feeding than in fattening ani- mals on pasture. The higher the degree of finish, or fatness, the more expensive the gains become and the wider the necessary margin. Feed requirements for fattening cattle.—In Chapter V we have already seen that with mature animals there is comparatively little storage of protein or mineral matter
. 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. 292 FEEDS AND FEEDING, ABRIDGED wider margin is required for winter feeding than in fattening ani- mals on pasture. The higher the degree of finish, or fatness, the more expensive the gains become and the wider the necessary margin. Feed requirements for fattening cattle.—In Chapter V we have already seen that with mature animals there is comparatively little storage of protein or mineral matter during fattening and that the ration may have a relatively wide nutritive ratio. However, most of the beef cattle in this country are now fattened before they are full- grown. For the fattening of such animals sufficient protein must be provided for the growth in muscle and other protein tissues which takes place as the animals fatten. From an extensive survey of feed- ing trials at the experiment stations, the authors believe that for the. Fig. 81.—Championship Yearling Fat Steers at the International Yearlings usually make less expensive gains than older steers, but require a somewhat longer feeding period to reach the same finish. most rapid gains in fattening 2-year-old steers the nutritive ratio should not be wider than 1:7 to 1 (See Appendix Table V.) When protein-rich feeds are lower in price than carbonaceous feeds, it may be economical to feed much narrower rations than this. For example, good results are secured when cottonseed meal is fed as the only concentrate, the nutritive ratio then being as narrow as 1 As' is shown later in this chapter, the amount of concentrates to be fed will depend on the rapidity with which it is desired to fatten the cattle, and the degree of finish or fatness which the demands of the market make most profitable. Influence of age on cost of fattening.—In Chapter V we have al- ready seen that young, growing animals make mu
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