Levels of Crude Fiber with Constant Energy Levels for Growing-Finishing Swine Using Computerized Rations

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Abstract
THE production of lean pork carcasses has been achieved by replacing high energy feeds with bulky, low energy feeds high in crude fiber (Whatley et al., 1951; Bohman, Hunter and McCormick, 1955; Coey and Robinson, 1954; Merkel et al., 1958b). Increased dietary crude fiber reduced the total digestible nutrients (TDN) of the diet (Stevenson, Davey and Hines, 1959; Dinusson, Bolin and Mcllroy, 1961; Pond, Lowrey and Maner, 1962), reduced daily gains (Salmela, Rempel and Gates, 1963) and increased the feed requirement per unit of gain (Meade, Dukelow and Grant, 1966). These tests did not clearly indicate if the reduced gains and improved carcass leanness resulted from increased fiber or reduced energy of the diets. The objectives of these tests were to determine the effects of various levels of crude fiber in diets of near equal metabolizable energ on daily gain, efficiency of gain and carcass characteristics of swine. Copyright © 1970. American Society of Animal Science . Copyright 1970 by American Society of Animal Science

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