Analysis of residual feed intake in Nellore bulls of different ages, rib eye area, and backfat thickness

Authors :: Matheus Henrique Vargas de Oliveira
Jessica Moraes Malheiros
Alejandra Maria Toro Ospina
Pablo Dominguez-Castaño
Lorena Ferreira Benfica
Luiz Eduardo Cruz dos Santos Correia
Leila de Genova Gaya
Maria Eugênia Zerlotti Mercadante
André Michel de Castilhos
Joslaine Noely dos Santos Gonçalves Cyrillo
Jéssica Biasotto Sartori
Lúcia Galvão de Albuquerque
Josineudson Augusto II de Vasconcel Silva
Source :: Tropical Animal Health and Production. 54
Publication Year :: 2022
Publisher :: Springer Science and Business Media LLC, 2022.
Abstract: The aim of the present study was to use different models that include body composition phenotypes for the evaluation of residual feed intake (RFI) in Nellore bulls of different ages. Phenotypic and genotypic data of bulls that had participated in feed efficiency tests of a commercial (COM) and an experimental (EXP) herd between 2007 and 2019 were used. The mean entry age in the two herds was 645 and 279 days, respectively. The phenotypes were evaluated: rib eye area (REA), backfat thickness (BFT), residual feed intake (RFI

Subjects :: Male
Eating
Genome
Phenotype
Food Animals
Body Composition
Animals
Cattle
Ribs
Animal Science and Zoology

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