01444nam a2200193 a 450000100080000000500110000800800410001910000190006024501450007926001160022450001360034052006580047665000220113465300200115670000200117670000170119670000210121370000160123419526342013-03-11       2012    bl uuuu     u00u1 u    #d1 aSANTANA, H. A.  aPerformance, feed efficiency and ultrasound carcass traits of Nellore cattle with different classes of residual gain.h[electronic resource]  aJournal of Animal Science v.90, (Supplement 3/J); Journal of Dairy Science, v.95, (Supplement 2), p.97-98c2012  aEdição dos trabalhos do ADSA-PSA-AMPA-ASAS-CSAS-WSASAS  JOINT ANNUAL MEETING, 2012, Phoenix-AR. Ruminant Nutrition: Beef I. M262.  aThe residual gain (RG) was proposed as a measure that estimates the weight gain according to feed intake and body weight (Koch et al., 1963; J. Anim. Sci., 22:486). With the objective to verify the differences between RG classes in performance, feed efficiency and ultrasound carcass traits in Nellore cattle (bulls n = 141, 21-mo old 385 kg initial BW; steers n = 224, 20-mo old, 350 kg initial BW), we computed the average daily gain (ADG), dry matter intake (DMI), feed conversion ratio (F:G), residual feed intake (RFI) and the gain of ribeye area (GREA), gain of backfat thickness (GBFT) and gain of rumpfat thickness (GRFT) measured by ultrasound.  aNutrição Animal  aBovino de corte1 aGOMES, R. da C.1 aSILVA, S. L.1 aFERRAZ, J. B. S.1 aLEME, P. R.