Características de carcaça de ovelhas de descarte das raças Ideal e Texel terminadas em dois sistemas de alimentação

Abstract

RESUMO Carcass traits of culling ewes from Texel and Polwarth breeds submitted to two feeding systemsABSTRACT -Carcass traits of culling ewes from Texel and Polwarth breeds submitted to two feeding systems were evaluated. Twenty ewes (10 from Polwarth breed and 10 from Texel breed) were randomly distributed according to its genetic group, in two feeding systems (feedlot and cultivated pasture). The slaughter was carried out when the animals reached body condition score of 3.5 points. Hot carcass (HCW) and cold carcass (CCW) weights and hot carcass (HCD) and cold carcass (CCD) dressing of Texel ewes were higher than those of Polwarth ewes: 27. 85 and 19.04 kg, 27.08 and 18.43 kg, 47.25 and 45.20 and 45.95 and 43.72%, respectively. The absolute weights of cuts for leg, shoulder, neck and rib, and absolute weights for muscles, bones and leg fat of ewes from Texel breed were higher than those obtained by Polwarth breed. When evaluated as relative weights, however, these characteristics did not differ between the two breeds. The feeding system did not constitute a change factor for carcass traits of culling ewes. Texel ewes breed showed cuts with higher weights than those obtained by Polwarth ewes breed.

Cortes cárneos e constituintes não-carcaça de ovelhas terminadas em pasto com teores diferentes de suplementação

“…Contudo, nessa pesquisa, apesar do peso absoluto dos cortes cárneos não sofrerem alterações, omitindo-se o pescoço, os pesos relativos diferiram em função do acréscimo de concentrado, exceto o lombo. Esses resultados foram contrários aos relatados por Pelegrini et al (2008) que, ao estudarem as características de carcaça de ovelhas de descarte Texel e Ideal em pastejo e confinadas, não verificaram diferenças no peso da perna, paleta e costela, em massa e porcentagem.…”

Características de la canal y efecto de la maduración sobre la calidad de la carne de ovejas de desvieje de raza Corriedale

“…Este valor es superior al observado por Pinheiro et al (2009) en ovejas de desvieje de la raza Santa Inés sacrificadas en tres estados fisiológicos diferentes, que fue de 0,58-0,89%. Por el contrario, en ovinos de la misma categoría cruce Ile de France X Texel, las pérdidas por oreo fueron de 3,13% (François, 2009) y en las de raza Ideal y Texel fue de 3,3% y 2,8% respectivamente (Pelegrini et al, 2008). Estos va-Tabla 1.…”

“…Martínez-Cerezo et al (2002) compararon corderos de diferentes razas (Churra, Rasa Aragonesa y Merina) sacrificados a distintos pesos vivos (10-12 kg, 20-22 kg y 30-32 kg) y observaron que el índice de compacidad de la canal aumentaba a mayores pesos de faena. En este trabajo el índice de compacidad de la canal fue 0,34 kg/cm (Tabla 1), valor intermedio al de ovejas de desvieje Ideal (18, 4 kg peso canal fría) y Texel (27,1 kg peso canal fría) que fue de 0,29 y 0,39 kg/cm (Pelegrini et al, 2008).…”

“…En la Tabla 2 se presenta la composición regional de la canal de las ovejas de desvieje. Es-tos valores son cercanos a los determinados por Pelegrini et al (2008) en ovejas de desvieje de las razas Ideal y Texel; en las ovejas Ideal, la pierna representó el 32,2% y la espalda el 18,4% mientras que en las Texel, los porcentajes fueron 32,0% y 19,1% respectivamente. En ovejas de desvieje Ile de France X Texel, François (2009) observó valores de 32,1% y 17,9% en pierna y espalda respectivamente.…”

Effect of high-concentrate diets with calcium lignosulfonate and cottonseed processing method on quantitative traits and non-carcass components of feedlot cull ewes

“…However, labels on these products on the market do not provide information on sex, category, age (young or adult), or whether the animal was culled (Pinheiro et al, 2007(Pinheiro et al, , 2009. The use of cull animals has been a commonly adopted practice on farms that undertake the entire production cycle, as the sale of these animals is compromised by the low acceptability of their meat (Pelegrini et al, 2008). Furthermore, they do not have the productive and reproductive potential expected of them (Atti et al, 2001).…”