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| Pettersson,Mats E.; Carlborg,Örjan. |
| Long-term selection experiments provide a valuable resource for understanding the genetic changes that take place in animal improvement programs. The Virginia chicken lines have for more than 50 years been subjected to single-trait, bi-directional, divergent selection for high and low juvenile body weight. It is one of the most well studied experimental populations in agricultural animals and has played an instrumental role in the understanding of the genetic basis of complex traits. In this paper, we summarize the findings from the more recent publications focusing on the efforts to identify the loci contributing to selection response as well as discuss the currently ongoing research. We conclude by describing some future research prospects that promise... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Body weight; Chicken; Epistasis; Metabolic; QTL; Selection. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001300028 |
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| Durigan,João Luiz Quagliotti; Cancelliero,Karina Maria; Bosi,Paula Lima; Delfino,Gabriel Borges; Montebelo,Maria Imaculada de Lima; Guirro,Rinaldo Roberto de Jesus; Silva,Carlos Alberto da; Polacow,Maria Luiza Ozores. |
| The aim of this work was to investigate the effect of the neuromuscular electrical stimulation (ES) on the metabolic and morfometric profile of the tibialis anterior muscle, antagonist to the soleus muscle which was stimulate, under the joint immobilization condition of the ankle for 7 and 15 days. The immobilization promoted the reduction in the muscle mass (I7: 17.36%, I15: 20.83%), in the glycogen content (I7: 48%, I15: 48%), in the muscle fibers areas (I7: 27%, I15: 40%) and increase in intramuscular connective tissue density (I7: 122%, I15: 206%). The EE didn't promote significant alterations in the mass of the immobilized groups, however, promoted increase in the glycogen (IEE7: 31.25%; IEE15: 56.25%), reduction in the muscle fibers areas (IEE7: 14%,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Immobilization; Muscle disuse; Metabolic; Morphometric; Neuromuscular electrical stimulation; Rehabilitation. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000100011 |
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| de Freitas,Carlos Eduardo A; Freitas,Selma de Bastos Zambelli; Lopes,Francis da Silva; Pai-Silva,Maeli Dal; Piçarro,Ivan da Cruz. |
| The muscles can perform the same function in a specific segment (muscles of fast and slow contraction), and at the same time be antagonistic in relation to muscular action (flexors or extensors). The present research aimed to study the morphology, frequency and metabolism of fiber types and the contractile characteristics of extensor and flexors muscles of rabbit. We studied muscles anterior tibialis (AT), flexor digitorum supeficialis (FDS), extensor digitorum longus (EDL) and posterior tibialis (PT). The muscles were submitted to the techniques HE, NADH-TR and myofibrillar ATPase. In EDL and PT extensor muscles, the frequencies of red (SO + FOG) and white fibers (FG) were 68.77% and 31.23% versus 58.87% and 41.13%, respectively. In the AT and FDS flexor... |
| Tipo: Journal article |
Palavras-chave: Contractile ability; Metabolic; Morphologic; Skeletal muscle. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000400034 |
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