Fecha/hora: 16/06/2024 10:56:37

Biblioteca(s): | INIA Las Brujas.
Fecha corriente: | 20/03/2024
Fecha de la última actualización: | 20/03/2024
Autoria: | MARÍN, M.F.; NAYA, H.; ESPASANDÍN, A.C.; NAVAJAS, E.; DEVINCENZI, T.; CARRIQUIRY, M.
Afiliación: | MARÍA F. MARÍN, Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Montevideo, Montevideo, Uruguay; HUGO NAYA, Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Montevideo, Montevideo, Uruguay; ANA C. ESPASANDÍN, Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Montevideo, Montevideo, Uruguay; ELLY ANA NAVAJAS VALENTINI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; THAIS DEVINCENZI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARIANA CARRIQUIRY, Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Montevideo, Montevideo, Uruguay.
Título: | Energy efficiency of grazing Hereford heifers classified by paternal residual feed intake.
Complemento del título: | Issue Section: Ruminant Nutrition.
Año de publicación: | 2024
Fuente/Imprenta: | Translational Animal Science. 2024, txae005. https://doi.org/10.1093/tas/txae005  -- OPEN ACCESS. - [Accepted manuscript]
ISSN: | 2573-2102
DOI: | 10.1093/tas/txae005
Idioma: | Inglés

Notas:

Article history: Received 21 September 2023, Published 14 March 2024. -- Corresponding author: mfedericamarin@gmail.com -- Funding  This research was partially funded by the Comisión Académica de Posgrados (Uruguay) through the graduate scholarship awarded to M.F. Marín and by the CSIC I+D Research Program (UdelaR) awarded to M. Carriquiry, and by the Instituto Nacional de Investigación Agropecuaria (CL_54 - Fenómica y genómica en bovinos de carne). -- 
Issue Section: Ruminant Nutrition (https://academic.oup.com/tas/search-results?f_TocHeadingTitle=Ruminant+Nutrition) -- License: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (https://creativecommons.org/licenses/by-nc/4.0/).

Contenido:

ABSTRACT.- Residual feed intake (RFI) has become in a widely spread index of feed efficiency. Although most of beef cattle systems in the world are pasture-based, RFI evaluation and research is usually performed in confinement conditions. In this context, residual heat production (RHP) estimated as the difference between actual and expected heat production (HP), could allow to identify efficient animals. Thus, the aim of this work was to evaluate the relationship between paternal estimated breeding values (EBV) for RFI and beef heifer efficiency, measured as RHP, as well as its association with heifers' productive and reproductive performance on grazing conditions. 
© The Author(s) 2024. Published by Oxford University Press on behalf of the American Society of Animal Science.

Palabras-Clave: | Beef cattle; Rangelands; Reproduction; Residual heat production.
Categoría del tema: | L53 Fisiología Animal - Reproducción
URL: | https://academic.oup.com/tas/advance-article-pdf/doi/10.1093/tas/txae005/56974047/txae005.pdf
Registro original: | INIA Las Brujas (LB)
Ejemplares: | LB - (103853-1) - PXI - AP - DD - Translational Animal Science/2024 -  -  - DIS