Loin characteristics and carcass cuts in Suffolk lambs finished on pasture and feedlot

Authors

  • Maria Angela Machado Fernandes Universidade Federal do Paraná, Curitiba, PR
  • Alda Lúcia Gomes Monteiro Universidade Federal do Paraná, Setor de Ciências Agrárias, Departamento de Zootecnia, Curitiba, PR
  • César Henrique Espírito Candal Poli Universidade Federal do Rio Grande do Sul, Faculdade de Agronomia, Departamento de Zootecnia, Porto Alegre, RS
  • Carina Simionato de Barros Universidade Federal do Paraná, Curitiba, PR
  • Odilei Rogerio Prado Faculdades Integradas Espírita, Curitiba, PR
  • Andressa Santanna Natel Universidade Federal do Paraná, Curitiba, PR

Keywords:

creep feeding, fat thickness, feedlot, tenderness, weaning

Abstract

This work evaluated measurements of the loin and weights and yields of carcass cuts of Suffolk lambs finished on four systems: (1) lambs weaned at 60 days of age and finished on pasture; (2) lambs kept with their dams and finished on same pasture; (3) lambs kept with their dams and finished on same pasture with supplementation in creep feeding; (4) lambs weaned at 60 days and finished on feedlot. Lambs were slaughtered when average live weight reached 32- 34kg. The carcasses were cutted after cooling and the left side was divided in loin, shoulder, leg, false and true ribs, neck and breast. On Longissimus lumborum (loin eye), it were registered maximum width, maximum depth and minimum fat thickness. It were measured loin eye area and shear force. There were no finishing systems effects (P>0.05) for cuts weight and yield. Lambs weaned and finished on feedlot presented higher (P<0.05) minimum fat thickness (2.07cm) and maximum fat thickness (3.06cm) in loin than lambs finished on Tifton-85 pasture, with or without weaning. Lambs weaned and finished on pasture presented higher (P<0.05) shear force (3.26kgf cm-1), suggesting lower meat tenderness. Finishing systems did not affect muscle development, but it showed influence on meat tenderness and fat covering.

Downloads

Download data is not yet available.

Published

2008-02-18

Issue

Section

ANIMAL NUTRITION

How to Cite

Loin characteristics and carcass cuts in Suffolk lambs finished on pasture and feedlot. (2008). Bulletin of Animal Husbandry, 65(2), 107-113. http://35.198.24.243/index.php/bia/article/view/1139

Most read articles by the same author(s)