Data/hora: 14/06/2024 04:55:15

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 09/01/2012
Data da última atualização: | 11/04/2018
Autoria: | GOMES, R. da C.; SIQUEIRA, R. F. de; BALLOU, M. A.; STELLA, T. R.; LEME, P. R.
Afiliação: | Rodrigo da Costa Gomes, Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos; Renata Farinelli de Siqueira, Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos; Michael Alan Ballou, Texas Tech University, Department of Animal and Food Sciences; Tiago Roberto Stella, Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos; Paulo Roberto Leme, Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos.
Título: | Hematological profile of beef cattle with divergent residual feed intake, following feed deprivation.
Ano de publicação: | 2011
Fonte/Imprenta: | Pesquisa agropecuária Brasileira, Brasília, DF, v. 46, n. 9, p. 1105-1111, set. 2011
Idioma: | Inglês

Notas:

Notas Científicas.
Título em português: Perfil hematológico de bovinos de corte com consumo alimentar residual divergente, após privação de alimentos.

Conteúdo: | The 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.
Palavras-Chave: | Eficiência alimentar; Estresse; Feed efficiency; Jejum; Leucócitos.
Thesagro: | Bos Indicus; Stress.
Thesaurus Nal: | fasting; leukocytes.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/51874/1/46n09a19.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (52467-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS