Effects of ewe breed and management system on efficiency of lamb production: III. Meat characteristics

Abstract

Effects of management system, ewe breed, sex, and legume grazing on cooking and sensory characteristics and shear force of lamb meat were estimated from data collected on animals produced in three management systems. System 1 lambs were born in late fall and fed to slaughter on a concentrate diet. System 2 lambs were born in January and February and grazed pure stands of alfalfa or ladino clover after weaning. System 3 lambs were born in March and April and remained with their dams on native bluegrass-white clover pasture throughout the grazing season. Lambs were progeny of either 1/2-Suffolk, 1/2-Rambouillet ewes or 1/2-Suffolk, 1/4-Finnsheep, 1/4-Rambouillet or Dorset ewes and were sired by Suffolk rams. Lambs were slaughtered at 50 (females) to 55 kg (males). One-half of the males in System 1 were left intact; all males in Systems 2 and 3 were castrated. Mean age at slaughter was 156, 204, and 234 d for lambs in Systems 1, 2, and 3, respectively. Cooked weight of loin chops averaged 68.5% of uncooked weight and did not differ among systems. Shear force was greatest for System 1 lambs and least for System 3 lambs in yr 1, but systems did not differ in shear performance in yr 2. System differences in tenderness favored System 3 lambs. Although mean flavor intensity was least for System 2 lambs, the frequency of high-intensity, potentially objectionable flavors was highest for these lambs and especially for those grazing alfalfa. In general, however, sensory characteristics did not differ greatly among production systems, and correlation analysis revealed little potential to use carcass traits to predict meat characteristics.

Effects of three management systems on meat quality of dairy breed goat kids

“…Some authors have reported greater values for shear force and toughness of meat from concentrate-fed lambs than from pasture animals (Santos-Silva et al 2002), whereas others did not find significant differences (Notter et al 1991). The results reported for E animals may be related to the relatively greater amount of exercise by kids from E, as suggested by Aalhus et al (1991) for lambs, who found that muscles from exercised lambs were significantly tenderer than muscles from their indoor counterparts.…”

Effect of feeding system on growth and carcass characteristics of Churra Tensina light lambs

“…The ADG of GR+S and DRL-GRE was significantly greater than GR (p b 0.05). Several authors (Ely et al, 1979, Prache et al, 1990Notter et al, 1991;McClure et al, 1994;Zervas et al, 1999) have reported greater ADG in drylot lambs than in grazing lambs, although they worked with weaned heavy lambs raised on different types of pasture, which may determine the degree of gain reduction. In that sense, Joy et al (2007) found that Rasa Aragonesa lambs grazing alfalfa and suckling their dams until slaughter presented similar growth than that observed in drylot lambs, whereas Churra Tensina lambs grazing on mountain pastures and also suckling throughout the raising period showed a lower ADG in relation to those stall-fed .…”

Efeito Do Peso Ao Abate De Cordeiros Santa Inês E Bergamácia Sobre as Características Físico-Químicas Da Carne

“…As variações encontradas na maciez são decorrentes de vários fatores, tais como: raça dos animais [21,23,27,30], peso ou idade ao abate [34,39], tipos de músculos [1,42], sistema de manejo [27,28,36] e condições de pré e pós-abate.…”

“…Outros autores também não citaram diferenças para FC, tais como: NOTTER, KELLY, BERRY [28] comparando as progênies do cruzamento de ovelhas ½-Suffolk, ½-Rambouillet; ½-Suffolk, ¼-Finnsheep, ¼-Rambouillet ou Dorset com machos Suffolk; e KISHORE, RAWAT, BASUTHAKUR [24] que encontraram em cordeiros machos Dorset x Avikalin e Avikalin médias de FC de 1,75 e1, 86kg, respectivamente.…”