DESEMPENHO, EFICIÊNCIA ALIMENTAR, COMPOSIÇÃO DE CARCAÇA E CARACTERÍSTICA REPRODUTIVA DE DIFERENTES GRUPOS DE CONSUMO ALIMENTAR RESIDUAL DE BOVINOS NELORE

Vol. 1, 2019 - 110930
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Resumo

The objective was to evaluate performance, feed efficiency, ultrasound-evaluated carcass composition measures, and scrotal circumference of growing Nellore bulls according to their classification relative to residual feed intake (RFI). Data were obtained from three feed efficiency tests with a total of 420 bulls. To measure the performance and feed efficiency, GrowSafe® feed troughs were utilized. Animals were divided into three groups according to their individual RFI values. Dry matter intake (DMI) did differ (P<0,0001) among RFI groups; more feed efficient bulls presented less DMI. No differences were observed for carcass composition traits and scrotal circumference among RFI groups. The RFI is a measure that can identify more efficient animals without imparing performance, carcass composition, and reproductive traits.

Instituições
  • 1 Universidade Estadual do Norte Fluminense Darcy Ribeiro
  • 2 Universidade Federal dos Vales do Jequitinhonha e Mucuri
  • 3 Universidade Federal de Minas Gerais
  • 4 Empresa Brasileira de Pesquisa Agropecuária - Pecuária Sudeste
Eixo Temático
  • 1. Melhoramento genético animal
Palavras-chave
GADO DE CORTE
Ganho de peso
Ultrassom