02007naa a2200289 a 450000100080000000500110000800800410001910000200006024501060008026000090018650001620019552010550035765000120141265000150142465000160143965000110145565300260146665300130149265300200150565300100152565300160153570000230155170000180157470000180159270000160161077300910162619120632018-04-11       2011    bl uuuu     u00u1 u    #d1 aGOMES, R. da C.  aHematological profile of beef cattle with divergent residual feed intake, following feed deprivation.  c2011  aNotas Científicas. Título em português: Perfil hematológico de bovinos de corte com consumo alimentar residual divergente, após privação de alimentos.  aThe objective of this work was to characterize the hematological profiles of steers and bulls, according to residual feed intake (RFI), after feed deprivation. Twenty-month-old Nellore steers and bulls were fed feedlot diets for 70 and 56 days, respectively. RFI was calculated as the difference between actual feed intake and expected feed intake. More and less efficient steers and bulls, according to RFI, were subjected to 24 hours of food deprivation. Blood was sampled prior to and following the withdrawal period. Hematological analyses included total and differential white blood cell count, red blood cell count and morphology, and plasma glucose concentration. Variation in RFI did not influence plasma glucose concentration or blood cell profiles. Glucose concentrations in bulls decreased from 114 to 97 mg dL-1, but remained unchanged in steers, and the neutrophil:lymphocyte ratio increased from 0.39 to 0.57 following deprivation. Hematological profiles do not differ between more and less efficient steers and bulls, according to RFI.  afasting  aleukocytes  aBos Indicus  aStress  aEficiência alimentar  aEstresse  aFeed efficiency  aJejum  aLeucócitos1 aSIQUEIRA, R. F. de1 aBALLOU, M. A.1 aSTELLA, T. R.1 aLEME, P. R.  tPesquisa agropecuária Brasileira, Brasília, DFgv. 46, n. 9, p. 1105-1111, set. 2011