Avaliação da expressão dos genes GDF-8 e PPAR? e qualidade da carne de cordeiros Pantaneiros / Assessment of the expression of GDF-8 and PPAR? genes and quality of Pantaneiro lamb meat

O objetivo do estudo foi avaliar a expressão dos genes GDF-8 e PPAR? no músculo Longissimus e suas correlações com características de carcaça e desempenho de cordeiros Pantaneiros abatidos com diferentes categorias de peso. A expressão do gene GDF-8 não apresentou correlação significativa com as características fenotípicas. Entretanto, os resultados sugerem que a maior expressão do gene PPAR? pode aumentar a deposição de marmoreio, manter o pH da carne em faixa ótima e melhorar a eficiência alimentar e proteica em ovinos Pantaneiros. No entanto, mais estudos são necessários para avaliar a futura aplicação do gene na seleção de ovinos Pantaneiros.

Quality traits and lipid composition of meat from crossbreed Santa Ines ewes fed diets including crushed crambe

ABSTRACT The objective of this study was to evaluate the replacement of soybean meal by crushed crambe on the qualitative characteristics, lipids, and chemical composition of the meat from crossbred Santa Ines ewes. These animals presented an initial body score of 2.5, were finished in confinement for 60 days, fed diets containing crushed crambe replacing 0, 33, 67, and 100% of soybean meal, and slaughtered with a body condition score of 3.5. The statistical design was completely randomized, with slaughter weight used as a covariate in the model. Sensory evaluations were performed in the gluteobiceps muscle by untrained evaluators (n = 100) of different ages. There was no significant effect for color, shear force, or cooking loss of the semimembranosus muscle. The replacement levels of soybean meal influenced only the moisture content, with a linear increase, and the ash content, which decreased linearly. For saturated fatty acids, there was linear effect on capric acid (C10:0), and a linear reduction of myristic (C14:0), pentadecanoic (C15:0), and heptadecanoic (C17:0) fatty acids. There was no influence of the inclusion level of crushed crambe on monounsaturated fatty acids. A linear increase was observed in the polyunsaturated fatty acids linoleic acid (C18:2n-6) and eicosatrienoic acid (C20:3n-3). For the sensory attributes, there were differences only for the variables flavor and tenderness, in which meat was considered more flavorful if it was from animals fed 0% crushed crambe, with an average of 1.6, and considered more tender if it was from animals finished with 15% crushed crambe in the diet, scoring an average of 1.7. Crushed crambe can be considered a promising alternative in the feeding of ewes finished in feedlot, replacing soybean meal in the diet, showing satisfactory results with respect to meat quality

Qualidade do lombo de cordeiros submetido a dois tipos de cozimento

This study aimed to evaluate the effect of baking in an electric oven or electric grill on the characteristics of cooking losses, shear force and sensory characteristics loin (muscle Longisssimus lumborum) of lambs. Were utilized 120 samples of loin from lambs slaughtered at six months age and body condition score 3,0 (normal). The experimental design was completely randomized with two treatments (oven or grill) with 60 repetitions. The results of cooking loss and shear force were subjected to analysis of variance. In sensory analysis, we used the acceptance test with a linear scale of 9 cm and the results were subjected to chi-square test. The weight loss was greater (

Perfil do consumidor de carne ovina na cidade de Dourados – MS

O objetivo deste estudo foi quantificar a frequência do consumo de carne de diferentes espécies de animais e caracterizar o consumidor de carne de ovelha em Dourados-MS. O instrumento de coleta utilizado foi um questionário estruturado, com objectivos e questões qualitativas. As inferências da pesquisa são mais representativo para os consumidores de ambos os sexos (macho e fêmea), entre 20 e 39 anos de idade, com renda familiar entre 1 e 6 salários mínimos e incompleto ensino superior. O menu da maioria dos entrevistados é composto de carne de aves - duas vezes por semana, gado de corte - 3 vezes por semana, carne de porco e peixe - uma vez por semana. Sobre o consumo de carne de ovelha, 28,75% dos entrevistados não consomem carne de ovino e o odor característico e forte sabor da carne de ovino foi o atributo mais comentado e 71,25% dos entrevistados consomem carne de ovino, portanto, há um mercado potencial para consumo de carne de ovelhas na cidade de Dourados. Entre as preferências dos consumidores, é o corte da perna moderado com a mistura de sal, vinho e ervas, preparadas na churrasqueira e com a carne ao ponto, no momento do consumo