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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
31/05/1996 |
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Data da última atualização: |
31/05/1996 |
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Autoria: |
KIRBY, D. R.; STUTH, J. W. |
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Título: |
Seasonal diurnal variation in composition of cow diets. |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
Journal of Range Management, v.35, n.1, p.7-8, Jan. 1982. |
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Idioma: |
Inglês |
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Conteúdo: |
Seasonal diets between fall 1977 and spring 1979 were collected in morning and evening from esophageally fistulated cows in the Post Oak Savannah of east-central Texas. Chemical content of diurnal diets were similar within a season excep CP was higher in evening collections as compared to morning collections during fall. Cows appeared to select for energy (IVDOM) over CP. Botanical composition of morning and evening diets differed only during summer. Since the cow spent more time during hot summer afternoons in the shade of woody plants, less grass and more forbs, vines, and woody vegetation were selected. Research based on morning diet collections only might result in biased samples. Recognition of nutritional and environmental stress with potential to alter grazing behavior of animals is critical for accurate sampling of livestock diets. |
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Palavras-Chave: |
Composicao; Composition; Cow; Seasonal diurnal variation; Variacao diurna sazonal. |
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Thesagro: |
Dieta; Nutrição; Vaca. |
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Thesaurus Nal: |
diet; nutrition. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01490naa a2200253 a 4500
001 1788951
005 1996-05-31
008 1982 bl --- 0-- u #d
100 1 $aKIRBY, D. R.
245 $aSeasonal diurnal variation in composition of cow diets.
260 $c1982
520 $aSeasonal diets between fall 1977 and spring 1979 were collected in morning and evening from esophageally fistulated cows in the Post Oak Savannah of east-central Texas. Chemical content of diurnal diets were similar within a season excep CP was higher in evening collections as compared to morning collections during fall. Cows appeared to select for energy (IVDOM) over CP. Botanical composition of morning and evening diets differed only during summer. Since the cow spent more time during hot summer afternoons in the shade of woody plants, less grass and more forbs, vines, and woody vegetation were selected. Research based on morning diet collections only might result in biased samples. Recognition of nutritional and environmental stress with potential to alter grazing behavior of animals is critical for accurate sampling of livestock diets.
650 $adiet
650 $anutrition
650 $aDieta
650 $aNutrição
650 $aVaca
653 $aComposicao
653 $aComposition
653 $aCow
653 $aSeasonal diurnal variation
653 $aVariacao diurna sazonal
700 1 $aSTUTH, J. W.
773 $tJournal of Range Management$gv.35, n.1, p.7-8, Jan. 1982.
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Registro original: |
Embrapa Pantanal (CPAP) |
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