Forty Holstein steers, initially weighing 385 kg, were individually fed ground ear corn based on rations containing 0, 0.75, 1.50 or 2.25% NaHCO3. Initial intake of rations containing 1.5 and 2.25% NaHCO3 was low. No differences (P > 0.05) were detected over the 84-day trial in ADG, feed intake or feed conversion. Rumen pH was not affected but ruminal fluid from steers receiving 1.5 and 2.25% NaHCO3 had significantly (P < 0.05) higher percent acetic, lower percent propionic and a higher A/P ration. NaHCO3 did not improve feedlot performance when added to ground ear corn diets full-fed to finishing Holstein steers.
McKNtcur, D. R., DnnvreNv, L. A. lNo Hooren, G. S. 1980. Effects of feeding monensin to Holstein steers. Can. J. Anim. Sci. 60 1O'7-112. Three experiments were conducted to determine the effects of monensin
Eighty Holstein steers were fed ground ear corn and corn silage diets supplemented with either soybean meal, liquid molasses-urea, dry urea or urea-soaked, ground ear corn for a period of 84 days. Dry urea was equivalent to soybean meal as the only source of supplemental nitrogen for Holstein steers weighing from 237 to 455 kg. Use of urea and molasses slightly reduced gains while urea in a solution for soaking ground ear corn caused significantly reduced gains (P < 0.05).
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