| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
|
Data corrente: |
23/09/2002 |
|
Data da última atualização: |
23/09/2002 |
|
Autoria: |
ADAMS, N. R.; LIU, S. M.; BRIEGEL, J. R.; GREEFF, J. C. |
|
Título: |
Protein metabolism in skin and muscle of sheep selected for a against staple strength. |
|
Ano de publicação: |
2000 |
|
Fonte/Imprenta: |
Australian Journal of Agricultural Research, v.51, n.5, p.541-546, 2000. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Two experiments were carried out to determine the mechanisms underlying the reduced effect of nutritional status on wool growth rate in Merino sheep that have been selected for high staple strength (SS). ln Expt 1, each group of 6 young sheep of SS+ and SS- genotypes were fed at 0.4 or 1.1 times maintenance, and in Expt 2, groups of8 sheep of each genotype were fed at 1.1 and 1.8 times maintenance. ln both experiments, rates of protein synthesis in skin, muscle, gut, rumen, and liver were determined using a flooding dose of labeled phenylalanine. Feed intake and the digestibility of feed were not affected by genotype. Neither dissection of the carcasses at slaughter, nor deuterated water analysis in Expt 1, detected any differences between the genotypes in body composition. The feeding level affected the total daily amount of protein synthesised in alI the organs examined, and the fractional rate of protein synthesis was affected by feeding level in alI organs except the liver. The fractional synthesis rate of protein was less responsive to feeding level in the SS+ sheep in both skin and muscle (P < 0.05), but not in the liver, jejunum, or rumen Total protein synthesis in muscle, and the estimated rate of protein degradation, were also less responsive to feeding level in the SS+ sheep (P < 0.05). We conclude that sheep genetically selected for high or low SS have altered local mechanisms in both skin and muscle that control the way they respond to nutrition. These findings provide a mechanism by which selection for wool growth rate also affects body metabolism MenosTwo experiments were carried out to determine the mechanisms underlying the reduced effect of nutritional status on wool growth rate in Merino sheep that have been selected for high staple strength (SS). ln Expt 1, each group of 6 young sheep of SS+ and SS- genotypes were fed at 0.4 or 1.1 times maintenance, and in Expt 2, groups of8 sheep of each genotype were fed at 1.1 and 1.8 times maintenance. ln both experiments, rates of protein synthesis in skin, muscle, gut, rumen, and liver were determined using a flooding dose of labeled phenylalanine. Feed intake and the digestibility of feed were not affected by genotype. Neither dissection of the carcasses at slaughter, nor deuterated water analysis in Expt 1, detected any differences between the genotypes in body composition. The feeding level affected the total daily amount of protein synthesised in alI the organs examined, and the fractional rate of protein synthesis was affected by feeding level in alI organs except the liver. The fractional synthesis rate of protein was less responsive to feeding level in the SS+ sheep in both skin and muscle (P < 0.05), but not in the liver, jejunum, or rumen Total protein synthesis in muscle, and the estimated rate of protein degradation, were also less responsive to feeding level in the SS+ sheep (P < 0.05). We conclude that sheep genetically selected for high or low SS have altered local mechanisms in both skin and muscle that control the way they respond to nutrition. These findings p... Mostrar Tudo |
|
Palavras-Chave: |
Composição corporal; Nutrição mineral; Síntese. |
|
Thesagro: |
Genótipo; Lã; Ovino; Proteína. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02251naa a2200241 a 4500
001 1528614
005 2002-09-23
008 2000 bl uuuu u00u1 u #d
100 1 $aADAMS, N. R.
245 $aProtein metabolism in skin and muscle of sheep selected for a against staple strength.
260 $c2000
520 $aTwo experiments were carried out to determine the mechanisms underlying the reduced effect of nutritional status on wool growth rate in Merino sheep that have been selected for high staple strength (SS). ln Expt 1, each group of 6 young sheep of SS+ and SS- genotypes were fed at 0.4 or 1.1 times maintenance, and in Expt 2, groups of8 sheep of each genotype were fed at 1.1 and 1.8 times maintenance. ln both experiments, rates of protein synthesis in skin, muscle, gut, rumen, and liver were determined using a flooding dose of labeled phenylalanine. Feed intake and the digestibility of feed were not affected by genotype. Neither dissection of the carcasses at slaughter, nor deuterated water analysis in Expt 1, detected any differences between the genotypes in body composition. The feeding level affected the total daily amount of protein synthesised in alI the organs examined, and the fractional rate of protein synthesis was affected by feeding level in alI organs except the liver. The fractional synthesis rate of protein was less responsive to feeding level in the SS+ sheep in both skin and muscle (P < 0.05), but not in the liver, jejunum, or rumen Total protein synthesis in muscle, and the estimated rate of protein degradation, were also less responsive to feeding level in the SS+ sheep (P < 0.05). We conclude that sheep genetically selected for high or low SS have altered local mechanisms in both skin and muscle that control the way they respond to nutrition. These findings provide a mechanism by which selection for wool growth rate also affects body metabolism
650 $aGenótipo
650 $aLã
650 $aOvino
650 $aProteína
653 $aComposição corporal
653 $aNutrição mineral
653 $aSíntese
700 1 $aLIU, S. M.
700 1 $aBRIEGEL, J. R.
700 1 $aGREEFF, J. C.
773 $tAustralian Journal of Agricultural Research$gv.51, n.5, p.541-546, 2000.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 3 | |
| 1. |  | LACAPE, J. M.; GAWRYSIAK, G.; CAO, T. V.; VIOT, C.; LIEWELLYN, D.; LIU, S.; JACOBS, J.; BECKER, D.; BARROSO, P. A. V.; ASSUNCAO, J. H. de; PALAI, O.; GEORGES, S.; JEAN, J.; GIBAND, M. Mapping QTLs for traits related to phenology, morphology and yield components in an inter-specific Gossypium hirsutum × G. barbadense cotton RIL population. Field Crops Research, v. 144, p. 256?267, 2013.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Algodão. |
|    |
| 2. | | LACAPE, J.- M.; LLEWELLYN, D.; JACOBS, J.; ARIOLI, T.; BECKER, D.; CALHOUN, S.; AL-GHAZI, Y.; LIU, S.; PALAI, O.; GEORGES, S.; GIBAND, M.; ASSUNÇÃO, H. de; BARROSO, P. A. V.; CLAVERIE, M.; GAWRYZIAK, G.; JEAN, J.; VIALLE, M.; VIOT, C. Meta-analysis of cotton fiber quality QTLs across diverse environments in a Gossypium hirsutum x G. barbadense RIL population. BMC Plant Biology, v.10, n. 132, p. 1-24, 2010.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Algodão. |
| |
| 3. | | YOUNG, N. D.; JEX, A. R.; LI, B.; LIU, S.; YANG, L.; XIONG, Z.; LI, Y.; CANTACESSI, C.; HALL, R. S.; XU, X.; CHEN, F.; WU, X.; ZERLOTINI, A.; OLIVEIRA, G.; HOFMANN, A.; ZHANG, G.; FANG, X.; KANG, Y.; CAMPBELL, B. E.; LOUKAS, A.; RANGANATHAN, S.; ROLLINSON, D.; RINALDI, G.; BRINDLEY, P. J.; YANG, H.; WANG, J.; WANG, J.; GASSER, R. B. Whole-genome sequence of Schistosoma haematobium. Nature Genetics, v. 44, n. 2, p. 221-225, Feb. 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Agricultura Digital. |
|  |
| Registros recuperados : 3 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
