Desenvolvimento dos componentes do peso vivo de cordeiros Santa Inês e Bergamácia abatidos em diferentes pesos

Santos-Cruz, Cristiane Leal dos; Pérez, Juan Ramón Olalquiaga; Muniz, Joel Augusto; Cruz, Carlos Janssen Gomes da; Almeida, Thais Romano de Vasconcelos e

doi:10.1590/s1516-35982009000500020

Cited by 12 publications

(8 citation statements)

References 8 publications

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“…However, our results still suggest that those variations in maintenance requirements may be related with the linear decrease in the size of small intestine, which ranged from 50 to 36% of the total gastrointestinal tract weight for lambs slaughtered either at weaning or at 35 kg of SBW, respectively. In our study, proportion of liver was not affected by the slaughter weight, and it averaged 1.85% of EBW, similarly to results obtained by Pires et al (2000), Carvalho et al (2005), and Santos-Cruz et al (2009).…”

Section: Resultssupporting

confidence: 89%

“…The relationship between empty body weight and shrunk body weight can be expressed by the following linear equation ( The shrunk body weight:empty body weight ratio, which indicates gastrointestinal tract content as a proportion of shrunk body weight, increased from 1.14 to lambs slaughtered at weaning, to 1.23 to animals slaughtered at more elevated body weights. Because the proportion of gastrointestinal tract content is directly related to the ruminal development, which is stimulated by the dry matter intake, mainly from fibrous foods (Baldwin et al, 2004), these results justify the highest carcass dressing percentages for lambs slaughtered immediately after weaning (Pérez et al, 2007;Santos et al, 2007).…”

Section: Resultsmentioning

confidence: 99%

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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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Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 99%

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

et al. 2010

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“…In this regard, it should be emphasized that internal organs have an earlier development (Santos-Cruz et al, 2009) and so they represent higher relative values in younger animals as compared with the older ones, in which body development was more advanced.…”

Section: Resultsmentioning

confidence: 99%

Characteristics of carcass and of non-carcass components of lambs and hoggets fed high-concentrate corn or sorghum diets

et al. 2017

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-The objective of this study was to evaluate the characteristics of carcass and non-carcass components of lambs and hoggets finished in the feedlot with high-concentrate corn or sorghum grain-based diets. Thirty-two animals were finished, comprising 16 lambs (milk teeth) and 16 hoggets (two teeth), which were distributed in a completely randomized design in a 2 × 2 factorial arrangement (two sheep categories × two grains). For the variables final live weight, live weight at slaughter, hot carcass weight, cold carcass weight, hot carcass yield, cold carcass yield, carcass compactness index, subjective color, loin-eye area, fasting losses, external organs, internal organs, and for the weights, in kilograms, of neck, shoulder, ribs, and leg, there was a significant difference between categories. In the variables studied for the high-concentrate diets, significant differences were found for the ribs, expressed in relative values. Lambs have much higher fasting losses, a greater proportion of internal organs, and lighter-colored meat compared with hoggets. Hot and cold carcass yields, meat subjective color, and percentage of ribs are higher in feedlot-finished lambs and hoggets fed high-concentrate sorghum-based diets compared with those fed corn-based diets.

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“…Porém, elevada deposição de gordura não é desejável porque, além de aumentar os custos de produção, deprecia as carcaças e gera maiores quantidades de gorduras internas que não são aproveitadas para consumo humano (CAMILO et al, 2012). A gordura interna apresenta função de proteção dos órgãos internos do corpo e é usada como estratégia fisiológica frente à escassez de alimentos no período seco (SANTOS-CRUZ et al, 2009). O aporte de nutrientes afeta a percentagem de gordura omental (MUSHI et al, 2009).…”

Section: Resultsunclassified

Medidas in vivo e da carcaça e constituintes não carcaça de ovinos alimentados com diferentes níveis do subproduto agroindustrial da goiaba

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Medeiros

et al. 2016

Rev. bras. saúde prod. anim.

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RESUMO O objetivo com este estudo foi avaliar a biometria, morfometria e os órgãos não-componentes da carcaça de ovinos Santa Inês, em confinamento, alimentadas com níveis crescentes (0; 20; 40 e 60% na matéria seca) de subproduto agroindustrial da goiaba como um substituto para o milho. Quarenta ovinos Santa Inês, machos (não castrados), com média de 17,41 ± 1,27kg de peso corporal (PC) e 120 dias de idade no início do estudo, foram utilizados neste experimento. Os animais foram abatidos aos 32kg ou 105 dias de confinamento. Foi utilizado o delineamento inteiramente casualizado, com dez repetições por tratamento. Os animais submetidos a dietas com 60% de substituição apresentaram menor comprimento corporal (63,20cm), menor altura de cernelha (67,30cm) e de garupa (69,50 cm), baixo escore de condição corporal (2,40 pts), carcaças de conformação inferior (2,25 pts), menor perímetro do tórax (65,10cm) e baixos rendimentos de órgãos como coração (0,52%), baço (0,15%), rins (0,25%) e pulmão (0,89%). O milho pode ser substituído pelo subproduto da goiaba em níveis de até 40%, sendo relevante a obtenção de animais com características corporais desejáveis para produção de carne e com rendimento de órgãos não constituintes da carcaça satisfatórios ao mercado.

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Desenvolvimento dos componentes do peso vivo de cordeiros Santa Inês e Bergamácia abatidos em diferentes pesos

Cited by 12 publications

References 8 publications

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

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

Characteristics of carcass and of non-carcass components of lambs and hoggets fed high-concentrate corn or sorghum diets

Medidas in vivo e da carcaça e constituintes não carcaça de ovinos alimentados com diferentes níveis do subproduto agroindustrial da goiaba

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