Características qualitativas da carcaça de cordeiros de diferentes genótipos submetidos a dois sistemas de produção.

Resumo: No sistema de produção de carne, as características qualitativas da carcaça são de fundamental importância para complementar a avaliação do desempenho animal. Assim, objetivou-se avaliar a influência do sistema de produção, bem como diferentes genótipos sobre as características qualitativas da carcaça de cordeiros. Foram observados 24 animais, machos inteiros, das raças ½Dorper x ½SPRD, ½Santa Inês x ½SPRD e ½Somalis x ½SPRD, submetidos à terminação a pasto e em confinamento. Os animais foram abatidos com peso vivo médio de 30 kg. As carcaças foram pesadas e refrigeradas por 24h, quando foram extraídos os Longissimus dorsi e neles mensurados grau de marmoreio, distribuição e textura da gordura, além da cor e textura da carne. A distribuição da gordura na carcaça não sofreu influência de nenhum tratamento (P>0,05), enquanto que o grau de marmoreio e textura da gordura teve interferência do sistema de produção, assim como a cor da carne. Os genótipos avaliados não diferiram nos atributos de distribuição da gordura, como também na textura e cor da carne. Os cordeiros ½Santa Inês x ½SPRD apresentaram as menores médias para grau de marmoreio e textura da gordura. O mestiço ½Dorper x ½SPRD proporcionou os melhores resultados para os parâmetros qualitativos avaliados nesta pesquisa. [Qualitative characteristics the Carcass Lambs Different Submitted Genotypes Two Systems of Production]. Abstract: In system meat production, qualitative characteristics of carcass are basic importance to complement the evaluation of animal performance. Thus, objectified to evaluate the influence of production system, as well different genotypes on qualitative characteristics carcass of lambs. Twenty four animals had been observed, entire males, breeds ½ Dorper x ½ SPRD, ½ Saint Ines x ½ SPRD and ½ Somalis x ½ SPRD, submitted the termination the grass and in confinement. The animals had been abated with average alive weight of 30 kg. The carcasses had been weighed and cooled for 24h, when they had been extracted Longissimus dorsi and in them measured degree of marbling, distribution and texture of the fat and texture beyond the color and texture of the meat. Distribution of fat in carcass did not suffer influence from no treatment (P>0.05), whereas the degree of marbling and texture of fat had interference of the production system, as well the color of meat. Evaluated genotypes had not differed in distribution attributes of fat, as well as in texture and color of meat. The lambs ½ Saint Ines x ½ SPRD presented the average minors for the marbling attributes and texture of fat. The mixed race ½ Dorper x ½ SPRD provided the best ones resulted for the attributes evaluated in this research

Características sensoriais da carne de cordeiros Morada Nova submetidos a dietas com diferentes níveis de farelo de castanha de caju.

Utilizou-se dezenove cordeiras Morada Nova, alimentadas com níveis crescentes de inclusão de farelo de castanha de caju (0, 3, 6 e 9%), abatidas ao atingirem peso médio de 20 kg e avaliadas suas características sensoriais de dureza, suculência, aroma, sabor e aceitação global, através de um painel com 10 julgadores treinados. Sendo observada diferença somente para os atributos cor e sabor, com a dieta com 6% de farelo de castanha de caju apresentado as maiores médias. Assim, a adição de farelo de castanha de caju na dieta de cordeiros Morada Nova influencia as características sensoriais de cor e sabor da carne, à medida que o nível de inclusão é elevado. Sensorial characteristics of the Morada Nova lambs meat submitted to diets with different levels of inclusion of cashew nut meal. Abstract: Nineteen lambs Morada Nova, fed with increasing levels of inclusion of cashew nut meal (0, 3, 6 and 9%) to reach slaughter body weight of 20 kg and to evaluate for their sensorial characteristic of tenderness, succulence, odour, flavor and global acceptance by a panel of 10 trained judges. Difference was observed only for color and flavor, in the diet with 6% of cashew nut meal presented the highest averages. Thus, the addition of cashew nut meal in the diet of Morada Nova lambs influence the sensorial characteristics of color and flavor of meat, as that the level inclusion is high

Medidas morfométricas de carcaça de cordeiros terminados sob dois sistemas de produção.

Resumo: Utilizou-se 39 cordeiros, sendo 13 cordeiros de cada genótipo, meio sangue Dorper, Santa Inês e Somalis, todos machos inteiros. Com dois sistemas de terminação em pastagem nativa e cultivada, foram encaminhados ao abate com peso mínimo de 25kg e escore corporal igual ou maior que três. O peso vivo (PV) exerce inferência sobre o peso de carcaça quente (PCQ) (r = 0,96), comprimento do corporal (CC) (r = 0,75), perímetro torácico (PT) (r = 0,91) e o comprimento interno da carcaça (CIC) (r = 0,71), indicando elevada correlação entre esses índices. O escore corporal (ECC) está fracamente correlacionado com peso de carcaça quente (PCQ) (r = 0,47) e fria (PCF) (r = 0,48), perímetro torácico (PT) (r = 0,47) e área de olho de lombo (AOL) (r = 0,41), indicando a possibilidade de usar esse parâmetro para escolher o momento de encaminhar os animais para ao abate. A área de olho de lombo correlaciona-se positivamente com todas as variáveis analisadas, predizendo uma carcaça com qualidade para o abate. Todas as outras variáveis estão correlacionadas, sendo importante na escolha do momento do abate. Morphometrics measures of carcass of lambs finished under two systems of production. Abstract: Used 39 lambs, being 13 lambs of each genotype, blood way Dorper, Santa Inês and Somalis, all entire males. With two systems termination in native and cultivated pasture, they had been directed it abates with minimum weight of 25kg and props up corporal equal or bigger that three. The alive weight (PV) exerts inference on the weight of hot carcass (PCQ) (r = 0,96), length of corporal one (CC) (r = 0,75), thoracic perimeter (PT) (r = 0.91) and the internal length of the carcass (CIC) (r = 0.71), indicating raised correlation between these indices. It props up corporal (ECC) weakly is correlated with weight of hot carcass (PCQ) (r = 0,47) and cold (PCF) (r = 0,48), thoracic perimeter (PT) (r = 0,47) and area of eye of loin (AOL) (r = 0.41), indicating possibility use this parameter to choose moment to direct the animals for it abates. The area of eye of loin positively correlates with all the analyzed variable, predicting a carcass with quality abates for it. All other variable are correlated, being important in choice of moment abate

Diversidade genética estimada por meio de variáveis quantitativas e moleculares em acesso de coqueiro-gigante.

Anais do 1º Simpósio da Rede de Recursos Genéticos Vegetais do Nordeste (I RGVNE), Cruz das Almas, nov. 2013

Caracterização molecular de acessos de coqueiro-gigante via marcadores SSR.

O Brasil sedia o Banco Internacional de Germoplasma de Coco para a América Latina e Caribe (ICG-LAC), o qual é vinculado a Rede Internacional de Recursos Genéticos de Coco (COGENT). Diante da necessidade de inferir sobre a estrutura genética de alguns acessos de coqueiro, esse trabalho objetivou caracterizar acessos de coqueiro-gigante via marcadores moleculares microssatélites. Para tanto, os acessos foram submetidos a reações de polimerase em cadeia para cinco primers de SSR. Quatro primers foram analisados gerando 37 marcas polimórficas. Com base na análise preliminar das marcas obtidas, constatou-se que há variabilidade genética nos diferentes acessos analisados

QAPgrid: A Two Level QAP-Based Approach for Large-Scale Data Analysis and Visualization

Background: The visualization of large volumes of data is a computationally challenging task that often promises rewarding new insights. There is great potential in the application of new algorithms and models from combinatorial optimisation. Datasets often contain “hidden regularities” and a combined identification and visualization method should reveal these structures and present them in a way that helps analysis. While several methodologies exist, including those that use non-linear optimization algorithms, severe limitations exist even when working with only a few hundred objects. Methodology/Principal Findings: We present a new data visualization approach (QAPgrid) that reveals patterns of similarities and differences in large datasets of objects for which a similarity measure can be computed. Objects are assigned to positions on an underlying square grid in a two-dimensional space. We use the Quadratic Assignment Problem (QAP) as a mathematical model to provide an objective function for assignment of objects to positions on the grid. We employ a Memetic Algorithm (a powerful metaheuristic) to tackle the large instances of this NP-hard combinatorial optimization problem, and we show its performance on the visualization of real data sets. Conclusions/Significance: Overall, the results show that QAPgrid algorithm is able to produce a layout that represents the relationships between objects in the data set. Furthermore, it also represents the relationships between clusters that are feed into the algorithm. We apply the QAPgrid on the 84 Indo-European languages instance, producing a near-optimal layout. Next, we produce a layout of 470 world universities with an observed high degree of correlation with the score used by the Academic Ranking of World Universities compiled in the The Shanghai Jiao Tong University Academic Ranking of World Universities without the need of an ad hoc weighting of attributes. Finally, our Gene Ontology-based study on Saccharomyces cerevisiae fully demonstrates the scalability and precision of our method as a novel alternative tool for functional genomics

Research trends in combinatorial optimization

Acknowledgments This work has been partially funded by the Spanish Ministry of Science, Innovation, and Universities through the project COGDRIVE (DPI2017-86915-C3-3-R). In this context, we would also like to thank the Karlsruhe Institute of Technology. Open access funding enabled and organized by Projekt DEAL.Peer reviewedPublisher PD