Data/hora: 24/06/2024 18:47:04

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 13/02/1997
Data da última atualização: | 13/02/1997
Autoria: | LITTLE, D. A.; MORRIS, J. G.
Afiliação: | C.S.I.R.O. Division of Animal Physiology, Cunningham Laboratory, Mill Road, St Lucia, Queensland. Animal Research Institute, Yeerongpilly.
Título: | Prediction of the body composition of live cattle.
Ano de publicação: | 1972
Fonte/Imprenta: | Journal of Agricultural Science, v.78, p.505-508, 1972.
Idioma: | Inglês
Conteúdo: | Two methods of determining body composition in live cattle have been compared with the composition of the cattle as determined by chemical analysis. Total body water (TBW) was estimated from tritiated water (TOH) dilution, and circulating red cell volume (RCV) estimated from measurements of plasma volume and haematocrit. TBW was very closely related to fat-free weight and fat weight as a percentage of live weight (LW) in eight cattle ranging from 3 to 34% fat. TOH space was more precise than RCV in the estimation of the various chemical fractions of the animal. TOH injected intravenously equilibrated with ruminal water in 8-10 h; one could be confident that equilibrium had occurred 10 h after injection, and equilibration time was not affected by previous restriction of feed and water. The mean biological half life of TOH was 4.2+-0.4 days. Equations are presented for the practical determination of the various compartments.
Palavras-Chave: | Composicao do corpo; Prediccao.
Thesagro: | Análise Química; Gado.
Thesaurus Nal: | body composition; cattle; chemical analysis; prediction.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (33809-1) - ADD - SP - -- - SP3432 -  - 3432 - DIS