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Use of Poultry Manures in Steer Finishing Rations¹

University of Georgia, Athens 30602

Abstract

Two feeding trials involving 70 and 110 steers, respectively, were carried out. The first was to study the use of different levels of a pure dried broiler excreta as a protein source in a steer rations; the second to compare broiler manure with a wood shavings base, broiler manure with a peanut hulls base and dried layer hen manure as steer ration components. These four manures had a crude protein content on a dry basis of 34.5, 22.5, 24.9 and 40.4%, respectively. When the dried broiler excreta was used to provide either one-half or all of the supplemental protein in a steer finishing ration, weight gains were not different (P>.05) from those obtained with a control ration; however, gains at the higher level tended to be slightly depressed. Steers receiving a ration in which 20% broiler manure/wood shavings and 2.0% cane molasses replaced the 8.0% soybean meal, 12.5% peanut hulls and 1.5% minerals of a control ration performed in every parameter studied, including taste panel evaluations, as well as or better than steers on the control ration. Based on the January, 1974, prices of the feeds which it effectively replaced in the control ration, this manure was calculated to have a worth of $57.52 per metric ton for steer feeding purposes. When used in a similar manner, broiler manure/peanut hulls did not give a comparable performance until additional roughage was provided. When dried caged layer hen manure was used, a lower (P<.05) rate of gain was realized than when broiler manure was fed. Also, steers on a negative control ration containing no protein supplement gained faster (P<.05) than did those receiving supplemental protein in the form of dried hen manure.

¹ This research was supported in part by Gold Kist, Inc., Atlanta, Georgia.

² Director of Feed Research, Gold Kist Research Farm, Talmo, Georgia.