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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
26/09/2016 |
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Data da última atualização: |
03/10/2016 |
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Autoria: |
CHAPMAN, R. E.; REIS, P. J. |
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Título: |
Effects of abomasal supplements of methionine on the wool follicles and skin of wheat-fed sheep. |
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Ano de publicação: |
1978 |
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Fonte/Imprenta: |
Australian Journal of Biological Sciences, v. 31, n. 2, p. 161-72, Apr. 1978. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: In wheat-fed sheep, supplemented abomasally with 1.5-6.0 g methionine per day, poor formation and improper keratinization of the wool fibres were evident 4 days after the start of the methionine supplementation. This led to kinking of the fibres. Subsequently severe distortion of the fibres, accompanied by gross thickening of the outer root sheaths, occurred in the distal (upper) halves of most follicles. Within this thickened region partial degradation of the distorted fibres occurred before emergence from the skin surface, causing a marked reduction in the tensile strength of the wool. It is postulated that kinking of the fibres stimulated the accumulation of outer root sheath cells, which led to hyperactivity of the process that normally degrades the inner root sheath, so that the poorly keratinized fibres were also partly degraded. Thickening of the epidermis and cellular infiltration of the upper dermis sometimes occurred during the infusions of methionine, whereas there were negligible effects on the sebaceous and sweat glands. Disappearance of the excess accumulation of outer root sheath cells after cessation of the methionine supplementation occurred gradually following improvement in keratinization and elimination of kinking of the fibres. |
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Palavras-Chave: |
Skin. |
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Thesagro: |
Abomaso; Dieta; Lã; Ovino; Pele. |
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Thesaurus Nal: |
Abomasum; Diet; Sheep; Triticum; Wool. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01948naa a2200265 a 4500
001 2053469
005 2016-10-03
008 1978 bl uuuu u00u1 u #d
100 1 $aCHAPMAN, R. E.
245 $aEffects of abomasal supplements of methionine on the wool follicles and skin of wheat-fed sheep.
260 $c1978
520 $aAbstract: In wheat-fed sheep, supplemented abomasally with 1.5-6.0 g methionine per day, poor formation and improper keratinization of the wool fibres were evident 4 days after the start of the methionine supplementation. This led to kinking of the fibres. Subsequently severe distortion of the fibres, accompanied by gross thickening of the outer root sheaths, occurred in the distal (upper) halves of most follicles. Within this thickened region partial degradation of the distorted fibres occurred before emergence from the skin surface, causing a marked reduction in the tensile strength of the wool. It is postulated that kinking of the fibres stimulated the accumulation of outer root sheath cells, which led to hyperactivity of the process that normally degrades the inner root sheath, so that the poorly keratinized fibres were also partly degraded. Thickening of the epidermis and cellular infiltration of the upper dermis sometimes occurred during the infusions of methionine, whereas there were negligible effects on the sebaceous and sweat glands. Disappearance of the excess accumulation of outer root sheath cells after cessation of the methionine supplementation occurred gradually following improvement in keratinization and elimination of kinking of the fibres.
650 $aAbomasum
650 $aDiet
650 $aSheep
650 $aTriticum
650 $aWool
650 $aAbomaso
650 $aDieta
650 $aLã
650 $aOvino
650 $aPele
653 $aSkin
700 1 $aREIS, P. J.
773 $tAustralian Journal of Biological Sciences$gv. 31, n. 2, p. 161-72, Apr. 1978.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
20/08/2002 |
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Data da última atualização: |
09/04/2015 |
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Tipo da produção científica: |
Documentos |
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Autoria: |
FIGUEIREDO, E. A. P. de; ROSA, P. S.; SCHMIDT, G. S.; JAENISCH, F. R. F.; SCHEUERMANN, G. N.; AVILA, V. S. de; COSTA, C. A. F.; BRUM, P. A. R. de; BOMM, E. R. |
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Afiliação: |
ELSIO ANTONIO PEREIRA DE FIGUEIREDO, CNPSA; PAULO SERGIO ROSA, CNPSA; GILBERTO SILBER SCHMIDT, SRI; FATIMA REGINA FERREIRA JAENISCH, CNPSA; GERSON NEUDI SCHEUERMANN, CNPSA; VALDIR SILVEIRA DE AVILA, CNPSA; CARLOS ALBERTO FAGONDES COSTA, CNPSA; PAULO ANTONIO RABENSCHLAG DE BRUM, CNPSA; EDISON ROBERTO BOMM, CNPSA. |
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Título: |
Manual de manejo dos reprodutores de frango de corte Embrapa 041. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Concórdia : Embrapa Suínos e Aves, 2001. |
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Páginas: |
20 p. |
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Série: |
(Embrapa Suínos e Aves. Documentos, 77). |
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Idioma: |
Português |
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Palavras-Chave: |
Reprodutores. |
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Thesagro: |
Frango de Corte; Manejo. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/57691/1/doc77.pdf
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Marc: |
LEADER 00721nam a2200253 a 4500
001 1439879
005 2015-04-09
008 2001 bl uuuu u0uu1 u #d
100 1 $aFIGUEIREDO, E. A. P. de
245 $aManual de manejo dos reprodutores de frango de corte Embrapa 041.
260 $aConcórdia : Embrapa Suínos e Aves$c2001
300 $a20 p.
490 $a(Embrapa Suínos e Aves. Documentos, 77).
650 $aFrango de Corte
650 $aManejo
653 $aReprodutores
700 1 $aROSA, P. S.
700 1 $aSCHMIDT, G. S.
700 1 $aJAENISCH, F. R. F.
700 1 $aSCHEUERMANN, G. N.
700 1 $aAVILA, V. S. de
700 1 $aCOSTA, C. A. F.
700 1 $aBRUM, P. A. R. de
700 1 $aBOMM, E. R.
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Embrapa Suínos e Aves (CNPSA) |
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