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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
20/03/2002 |
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Data da última atualização: |
20/07/2018 |
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Autoria: |
CARVALHO, J. H. de. |
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Afiliação: |
University of Florida (Florida). |
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Título: |
Plant age and its effects upon forage quality. |
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Ano de publicação: |
1976 |
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Fonte/Imprenta: |
Florida: University of Florida, 1976. |
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Páginas: |
62p.il. |
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Idioma: |
Inglês |
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Notas: |
M.Sc. Thesis. |
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Conteúdo: |
Laboratory analyses were used to evaluate the quality of forage produced by three cultivars of bahiagrass (Paspalum notatum Flugge), one accession of limpograss (hemarthria altissima (Poir) Stapf. et C. E. Hubb) and three breeders'lines of digitgrass (Digitaria decumbens Stent.). The analytical procedures were neutral detergent fiber (NDF), neutral detergent solubles (NDS), acid detergent fiber (ADF), acid detergent lignin (ADL), crude protein (CP) and "in vitro" organic matter digestion (IVOMD). Samples of the regrowth were harvested with each advance of one week in age, beginning on July 24, 1975 through the eighteenth week, followed by a final harvest after several frosts at the twenty-second week, for a total of nineteen harvests. Five mathematical modelswere tested to fit the quality parameters. Prediction equations were chosen from the best fitting models. IVOMD and NDS decreased and NDF, ADF and ADL increased with age. Crude protein decreased with increasing age followed by an increase in the late harvests of all grasses except in the breeders line X46-2 of digitgrass. This increase in crude protein towards the end of the season may be explained by the occurrence of new regrowth. When comparing the values grouped by species and estimated by the best fitting models at the first and last harvest, the following maximum ranges were obtained. IVOMD ranged from 72.5% to 38.1% in digitgrass, 58.5% to 28.2% in bahiagrass and 68.2% to 45.8 in limpograss. NDS ranged from 44.2% to 18.7% of dry matter in digitgrass... MenosLaboratory analyses were used to evaluate the quality of forage produced by three cultivars of bahiagrass (Paspalum notatum Flugge), one accession of limpograss (hemarthria altissima (Poir) Stapf. et C. E. Hubb) and three breeders'lines of digitgrass (Digitaria decumbens Stent.). The analytical procedures were neutral detergent fiber (NDF), neutral detergent solubles (NDS), acid detergent fiber (ADF), acid detergent lignin (ADL), crude protein (CP) and "in vitro" organic matter digestion (IVOMD). Samples of the regrowth were harvested with each advance of one week in age, beginning on July 24, 1975 through the eighteenth week, followed by a final harvest after several frosts at the twenty-second week, for a total of nineteen harvests. Five mathematical modelswere tested to fit the quality parameters. Prediction equations were chosen from the best fitting models. IVOMD and NDS decreased and NDF, ADF and ADL increased with age. Crude protein decreased with increasing age followed by an increase in the late harvests of all grasses except in the breeders line X46-2 of digitgrass. This increase in crude protein towards the end of the season may be explained by the occurrence of new regrowth. When comparing the values grouped by species and estimated by the best fitting models at the first and last harvest, the following maximum ranges were obtained. IVOMD ranged from 72.5% to 38.1% in digitgrass, 58.5% to 28.2% in bahiagrass and 68.2% to 45.8 in limpograss. NDS ranged from 44.2% ... Mostrar Tudo |
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Palavras-Chave: |
Vegetal product. |
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Thesagro: |
Agronomia; Planta Forrageira; Produção Vegetal. |
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Thesaurus Nal: |
agronomy; forage. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02057nam a2200205 a 4500
001 1790047
005 2018-07-20
008 1976 bl uuuu m 00u1 u #d
100 1 $aCARVALHO, J. H. de
245 $aPlant age and its effects upon forage quality.
260 $aFlorida: University of Florida$c1976
300 $a62p.il.
500 $aM.Sc. Thesis.
520 $aLaboratory analyses were used to evaluate the quality of forage produced by three cultivars of bahiagrass (Paspalum notatum Flugge), one accession of limpograss (hemarthria altissima (Poir) Stapf. et C. E. Hubb) and three breeders'lines of digitgrass (Digitaria decumbens Stent.). The analytical procedures were neutral detergent fiber (NDF), neutral detergent solubles (NDS), acid detergent fiber (ADF), acid detergent lignin (ADL), crude protein (CP) and "in vitro" organic matter digestion (IVOMD). Samples of the regrowth were harvested with each advance of one week in age, beginning on July 24, 1975 through the eighteenth week, followed by a final harvest after several frosts at the twenty-second week, for a total of nineteen harvests. Five mathematical modelswere tested to fit the quality parameters. Prediction equations were chosen from the best fitting models. IVOMD and NDS decreased and NDF, ADF and ADL increased with age. Crude protein decreased with increasing age followed by an increase in the late harvests of all grasses except in the breeders line X46-2 of digitgrass. This increase in crude protein towards the end of the season may be explained by the occurrence of new regrowth. When comparing the values grouped by species and estimated by the best fitting models at the first and last harvest, the following maximum ranges were obtained. IVOMD ranged from 72.5% to 38.1% in digitgrass, 58.5% to 28.2% in bahiagrass and 68.2% to 45.8 in limpograss. NDS ranged from 44.2% to 18.7% of dry matter in digitgrass...
650 $aagronomy
650 $aforage
650 $aAgronomia
650 $aPlanta Forrageira
650 $aProdução Vegetal
653 $aVegetal product
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Registro original: |
Embrapa Pantanal (CPAP) |
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