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Blood parameters associated with residual feed intake in beef heifers.
Clemmons, Brooke A; Ault-Seay, Taylor B; Henniger, Madison T; Martin, M Gabbi; Mulon, Pierre-Yves; Anderson, David E; Voy, Brynn H; McLean, Kyle J; Myer, Phillip R.
Afiliación
  • Clemmons BA; Department of Agriculture, College of Agricultural Sciences and Natural Resources, Texas A&M University - Commerce, Commerce, TX, USA.
  • Ault-Seay TB; Department of Animal Science, University of Tennessee Institute of Agriculture, University of Tennessee, Knoxville, TN, USA.
  • Henniger MT; Department of Animal Science, University of Tennessee Institute of Agriculture, University of Tennessee, Knoxville, TN, USA.
  • Martin MG; Department of Animal Science, University of Tennessee Institute of Agriculture, University of Tennessee, Knoxville, TN, USA.
  • Mulon PY; Department of Animal Science, University of Tennessee Institute of Agriculture, University of Tennessee, Knoxville, TN, USA.
  • Anderson DE; Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN, USA.
  • Voy BH; Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN, USA.
  • McLean KJ; Department of Animal Science, University of Tennessee Institute of Agriculture, University of Tennessee, Knoxville, TN, USA.
  • Myer PR; Department of Animal Science, University of Tennessee Institute of Agriculture, University of Tennessee, Knoxville, TN, USA.
BMC Res Notes ; 16(1): 177, 2023 Aug 18.
Article en En | MEDLINE | ID: mdl-37596624
Blood chemistry may provide indicators to greater feed efficient cattle. As a side objective to previous research, 17 Angus heifers approximately two years old underwent a feed efficiency trial to determine residual feed intake (RFI) and identify variation in blood chemistry in beef cattle divergent in feed efficiency. Heifers were categorized as high- or low-RFI based ± 0.25 standard deviations around mean RFI. Blood samples were analyzed using an i-STAT handheld blood analyzer to measure sodium, potassium, glucose, blood urea nitrogen (BUN), creatinine, hematocrit, and hemoglobin. BUN was greater in high-RFI heifers (µ = 8.7 mg/dL) contrasted to low-RFI heifers (µ = 6.5 mg/dL; P = 0.01), whereas glucose was greater in low-RFI heifers (µ = 78.1 mg/dL) contrasted to high-RFI heifers (µ = 82.0 mg/dL; P = 0.05). No other blood chemistry parameters differed by RFI. The greater abundance of BUN in high-RFI heifers may indicate inefficient utilization of protein or mobilization of tissue protein for non-protein use. Greater blood glucose concentrations in low-RFI heifers may indicate greater utilization of energy precursors, such as volatile fatty acids, or metabolites. These data suggest there are readily measurable indicators of physiological variation in nutrient utilization; however, this warrants additional studies to explore.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ingestión de Alimentos / Glucosa Tipo de estudio: Risk_factors_studies Límite: Animals Idioma: En Revista: BMC Res Notes Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ingestión de Alimentos / Glucosa Tipo de estudio: Risk_factors_studies Límite: Animals Idioma: En Revista: BMC Res Notes Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido