Crescimento alométrico dos componentes da carcaça de cordeiros Texel × Ile de France confinados do desmame aos 35kg de peso vivo

Galvani, Diego Barcelos; Pires, Cléber Cassol; Oliveira, Franciele de; Wommer, Tatiana Pfüller; Jochims, Felipe

doi:10.1590/s0103-84782008005000027

Cited by 10 publications

(7 citation statements)

References 14 publications

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“…Results were similar to those obtained by Galvani et al (2008), whose values indicated that the increased carcass weight implied a reduction of the growth rate of bones and muscles (b<1) and an increase in the fat growth rate (b>1), which may impair the sale of the carcass of animals slaughtered with heavier weights. Thus, excess fat is a limiting factor in the production of heavier lambs, requiring the identification of breeds and crosses capable of generating more desirable carcasses, especially when animals are fed so as to achieve elevated weights.…”

Section: Galvani Et Al (2008) Evaluated Feedlot-finishedsupporting

confidence: 85%

Tissue composition and allometric growth of tissues from commercial cuts and carcass of Texel lambs slaughtered with different weights

Carvalho

Zago

Pires

et al. 2016

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In this study, we evaluated the tissue composition, the ratios between different issues, and the allometric growth of tissues from the commercial cuts neck, shoulder, rib, and leg, and of the carcass of Texel lambs. Thirty uncastrated male lambs born from single calvings were used in this experiment. Lambs were weaned, confined individually, and distributed into five treatments with six replications. Each treatment consisted of a predefined slaughter weight (T23 -initial slaughter, T25, T30, T35, and T40). The proportion of bone decreased linearly in the shoulder, rib, and legs, but remained constant in the neck. The proportion of muscle decreased in the rib, whereas in the other cuts it remained constant. The percentage of fat increased as the slaughter weight of the lambs was increased, for all cuts. In all cuts and in the carcass, bone and muscle showed early growth (b<1), whereas fat displayed late growth (b>1). The proportion of bone decreased and fat increased linearly in the carcass, and the proportion of muscle was not influenced by the slaughter weight of the lambs. The muscle/fat ratio decreased in all cuts, and consequently in the half-carcass, as the slaughter weight was increased. The muscle/ bone ratio increased in the shoulder, rib, leg, and half-carcass, but there was no significant effect on the neck. The bone and muscle tissues showed early growth, whereas the fat had late growth in the different commercial cuts and carcass of Texel lambs. The tissue growth pattern of the shoulder may be representative of the allometric growth of the different carcass tissues. An increase in the slaughter weight of Texel lambs leads to a reduction of the muscle/fat ratio, due to the higher deposition of fat in the carcass of these animals. ResumoAvaliou-se a composição tecidual, a relação existente entre os diferentes tecidos e o crescimento alométrico dos tecidos dos cortes comerciais pescoço, paleta, costilhar e perna e da carcaça de cordeiros da raça Texel. Foram utilizados 30 cordeiros machos, não castrados e nascidos de parto simples. Os cordeiros foram desmamados, confinados individualmente e distribuídos em cinco tratamentos com seis repetições, sendo cada tratamento um peso pré-estabelecido de abate (T23 -abate inicial, T25, T30, T35 e T40). A proporção de osso diminuiu linearmente na paleta, no costilhar e na perna e se manteve constante no pescoço. A proporção de músculo diminuiu apenas no costilhar, enquanto que nos demais cortes se manteve constante. A porcentagem de gordura aumentou com a elevação do peso de abate dos cordeiros, em todos os cortes realizados. Em todos os cortes e na carcaça, o osso e o músculo apresentaram crescimento precoce (b<1), enquanto que a gordura apresentou crescimento tardio (b>1). A proporção de osso diminuiu e a de gordura aumentou linearmente na carcaça, enquanto que a proporção de músculo não foi influenciada pelo peso de abate dos cordeiros. A relação músculo/gordura diminuiu em todos os cortes e, consequentemente, na meia carcaça com o aumento no peso de ab...

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Section: Galvani Et Al (2008) Evaluated Feedlot-finishedsupporting

confidence: 85%

Tissue composition and allometric growth of tissues from commercial cuts and carcass of Texel lambs slaughtered with different weights

Carvalho

Zago

Pires

et al. 2016

SCA

Self Cite

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“…Using data of carcass tissue composition (previously published by Galvani et al, 2008) the allometric coefficient observed for the kidney fat (b = 2.13) was higher than that obtained for the carcass fat (b = 1.88) in a relation with the EBW. To better illustrate this point, we have related fat depots × total body fat.…”

Section: Resultsmentioning

confidence: 56%

“…The relationship found between kidney and carcass fat (Galvani et al, 2008), as a proportion of carcass weight, can be explained by the following equation (Equation [2]; r 2 = 0.84; root mean square error = 22.26; n = 20; P<0.001):…”

Section: Resultsmentioning

confidence: 99%

Postweaning growth of the non-carcass components of Texel crossbred lambs

et al. 2010

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-Twenty 11/16 Texel × 5/16 Ile de France crossbred lambs were slaughtered at different body weights to evaluate the growth of their non-carcass components. Animals were weaned at 42 days of age (15.9 ± 2.1 kg of body weight), housed in individual stalls, and fed ad libitum. After ten days of an experimental adaptation period, 5 lambs were slaughtered. The remaining lambs were randomly assigned to one of three following slaughter weights: 25, 30 or 35 kg of body weight at fast. At slaughter, all body components were individually weighed and expressed as percentage of the empty body weight. To determine allometric growth of individual components, the exponential equation Y = aX b was logarithmically transformed and used. Proportions of feet and head decreased, while wool proportion increased linearly as slaughter weight increased. Greater fat deposition in viscera (kidney and mesenteric fat) was observed for lambs slaughtered at more elevated body weights. Growth rate of small intestine was lower than that of the empty body (b = 0.39), and it decreased linearly as a proportion of empty body weight with advancing maturity. Growth rates of both liver and large intestine were isogonics (b = 0.90 and 1.08, respectively), i.e., similar to the empty body weight. On the other hand, rumen presented late growth (b = 1.37), and its proportion was lower only for the lambs slaughtered at weaning (1.58% of EBW). Once increased slaughter weights result in higher deposition of nutrients on body parts that are not intended to consumption, maximum slaughter weight of 11/16 Texel × 5/16 Ile de France crossbred lambs is recommended to be at 30 kg of body weight.Key Words: allometry, gastrointestinal tract, intestines, organs, sheep, viscera, Crescimento dos componentes não-integrantes da carcaça de cordeiros mestiços Texel no período pós-desmama RESUMO -Vinte cordeiros 11/16 Texel × 5/16 Ile de France foram abatidos em diferentes pesos com o objetivo de avaliar o crescimento dos componentes não-integrantes da carcaça. Os animais foram desmamados aos 42 dias de idade (15,9 ± 2,1 kg de peso corporal) e confinados em baias individuais, recebendo alimentação à vontade. Após um período de 10 dias de adaptação às condições experimentais, 5 cordeiros foram abatidos e os remanescentes foram aleatoriamente sorteados para serem abatidos aos 25, 30 ou 35 kg de peso corporal em jejum. Ao abate, cada componente corporal foi pesado individualmente, e seus valores expressos em percentual do peso de corpo vazio (PCV). Para determinação do crescimento alométrico de cada componente, foi utilizada a equação exponencial Y = aX b , transformada logaritmicamente em um modelo linear. As proporções de patas e cabeça decresceram, e a de lã aumentou linearmente de acordo com o peso de abate. Observou-se acentuado acúmulo de gordura interna (renal e mesentérica) no corpo dos animais abatidos em pesos mais elevados. A taxa de crescimento do intestino delgado foi menor que a do corpo vazio (b = 0,39) o que reduziu a proporção desse órgão com o avanço d...

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“…A porcentagem de lombo foi influenciada pelo peso corporal de abate, sendo observado maior percentual no peso corporal de 35kg e não havendo diferença nos pesos corporais de 25 e 30kg. Em estudos alométricos, o lombo é considerado como corte de desenvolvimento tardio em relação à meia carcaça e ao corpo do animal (Pereira Filho et al, 2008) por sua maior deposição de gordura (Galvani et al, 2008). Dessa forma, o peso corporal de 35kg foi favorecido em relação aos demais.…”

Section: Pescoçounclassified

“…O rendimento do tecido muscular obedeceu à ordem inversa, sendo observado o menor valor no peso corporal de abate de 35kg, possivelmente devido ao aumento do teor de gordura total. Esse resultado é compreensível, tendo em vista que o crescimento do tecido muscular é considerado precoce e a gordura tardia (Galvani et al, 2008;Lourençon, 2011 …”

Section: Pescoçounclassified

Rendimentos de cortes, proporção tecidual da carcaça e composição centesimal da carne de caprinos jovens em função do grupo racial e do peso corporal de abate

Marques

Menezes

Gonçalves

et al. 2013

Arq. Bras. Med. Vet. Zootec.

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Crescimento alométrico dos componentes da carcaça de cordeiros Texel × Ile de France confinados do desmame aos 35kg de peso vivo

Abstract: (b = 0.98) and leg (b = 0.99), and early in rib (b = 0.90) and neck (b = 0.79

Cited by 10 publications

References 14 publications

Tissue composition and allometric growth of tissues from commercial cuts and carcass of Texel lambs slaughtered with different weights

Tissue composition and allometric growth of tissues from commercial cuts and carcass of Texel lambs slaughtered with different weights

Postweaning growth of the non-carcass components of Texel crossbred lambs

Rendimentos de cortes, proporção tecidual da carcaça e composição centesimal da carne de caprinos jovens em função do grupo racial e do peso corporal de abate

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