Longissimus dorsi area, ratio, Longissimus and Biceps femoris fat thickness. ... Keywords: Bos indicus, feed conversion ratio, musculature, phenotype. RESUMO.
http://dx.doi.org/10.1590/1678-4162-9526 Arq. Bras. Med. Vet. Zootec., v.70, n.2, p.525-534, 2018
Relationships between residual feed intake and feedlot performance, profitability, and carcass traits in Brahman cattle [Relações entre consumo alimentar residual e desempenho em confinamento, lucratividade e características de carcaça de bovinos da raça Brahman]
R. Favero1, I.Y. Mizubuti1, R.C. Gomes2, E.L.A. Ribeiro1, E.S. Pereira3, O.P.P. Prado-Calixto1, F.L. Massaro Júnior1, A.P.S. Santos4 1
Universidade Estadual de Londrina ˗ Londrina, PR 2 Embrapa Gado de Corte ˗ Campo Grande, MS 3 Universidade Federal do Ceará ˗ Fortaleza, CE 4 Universidade Federal de Uberlândia ˗ Uberlândia, MG
ABSTRACT The present study aimed to evaluate the feedlot performance, profitability and carcass traits of Brahman bulls classified according to the residual feed intake (RFI). Twenty-four bulls (19-month old, 370±34kg live weight) were housed in individual pens for 54 days and had the daily feed intake (observed dry matter intake, DMIobs; DMI % live weight, LW) and average daily gain (ADG) measured. Ultrasound carcass evaluations were performed at the initial and final weighings, when measurements were taken of Longissimus dorsi area, ratio, Longissimus and Biceps femoris fat thickness. The animals were ranked and divided into high (>+0.5 standard deviation; SD), medium (between ±0.5 SD from the mean), and low (
