Fecha/hora: 16/06/2024 00:06:44

Biblioteca(s): | INIA Las Brujas.
Fecha corriente: | 27/07/2022
Fecha de la última actualización: | 27/02/2023
Autoria: | PRAVIA, M.I.; NAVAJAS, E.; AGUILAR, I.; RAVAGNOLO, O.
Afiliación: | MARIA ISABEL PRAVIA NIN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ELLY ANA NAVAJAS VALENTINI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; IGNACIO AGUILAR GARCIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; OLGA RAVAGNOLO GUMILA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.
Título: | Alternative models to predict residual feed intake in Hereford breed and effects on their breeding values accuracy. [48]
Complemento del título: | Part 6 - Challenges - resource allocation and genetics of feed intake and efficiency.
Año de publicación: | 2022
Fuente/Imprenta: | In: Proceedings of the World Congress on Genetics Applied to Livestock Production (WCGALP), 12., Rotterdam, the Netherlands, 3-8 July 2022. doi: https://doi.org/10.3920/978-90-8686-940-4_48
Páginas: | 240-243.
DOI: | 10.3920/978-90-8686-940-4_48
Idioma: | Inglés
Notas: | Article history: Published online: February 9, 2023 -- Corresponding author: María Isabel Pravia, email: mpravia@inia.org.uy
Contenido: | ABSTRACT.- Residual feed intake (RFI) is a relevant trait, but expensive to measure so few candidates are phenotyped and have accurate GEBVs. Genetic evaluation corresponds to a single trait evaluation, where RFI are the residual from a lineal regression on feed intake on performance traits during feed-test. This study evaluates two approaches to predict a GEBV for RFI. First combing feed performance traits in a multitrait model to calculate a single measure of RFI using selection index, and 2nd the inclusion of weaning weight (WW) as an indicator trait combined with previous model. The GEBVs for the alternatives proposed were equivalent to conventional RFI. Using WW as a predictor trait on reference animals and candidates could be an inexpensive way to increase the accuracy of GEBVs. It allows to remove possible bias due to preselection of animals that participate on feed test and to extend prediction to more selection candidates.
Palabras-Clave: | GENETIC EVALUATION; Residual feed intake (RFI).
Thesagro: | HEREFORD.
Categoría del tema: | L10 Genética y mejoramiento animal
URL: | http://www.ainfo.inia.uy/digital/bitstream/item/16993/1/978-90-8686-940-4-48.pdf
Registro original: | INIA Las Brujas (LB)
Ejemplares: | LB - (103145-1) - PXI - PC - DD - WCGALP/12/2022 -  -  - DIS