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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha : |
01/07/2020 |
Actualizado : |
01/07/2020 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
BENVENUTTI, M.A.; FINDSEN, G.; SAVIAN, J.V.; MAYER, D.G.; BARBER, D.G. |
Afiliación : |
MARCELO A. BENVENUTTI, Queensland Department of Agriculture and Fisheries, Australia; GRAIG FINDSEN, Queensland Department of Agriculture and Fisheries, Australia.; JEAN VICTOR SAVIAN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay // Grupo de Pesquisa Ecologia do Pastejo, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS. Brazil.; DAVID G. MAYER, Queensland Department of Agriculture and Fisheries, Australia; DAVID G. BARBER, Queensland Department of Agriculture and Fisheries, Australia. |
Título : |
The effect of stage of regrowth on the physical composition and nutritive value of the various vertical strata of kikuyu (Cenchrus clandestinus) pastures. |
Complemento del título : |
Short communication. |
Fecha de publicación : |
2020 |
Fuente / Imprenta : |
Tropical Grassland-Forrajes Tropicales, 2020, v.8(2), p. 141-146. Doi: 10.17138/TGFT(8)141-146 |
ISSN : |
2346-3775 |
DOI : |
10.17138/TGFT(8)141-146 |
Idioma : |
Inglés |
Notas : |
Article history: Received for publication 2 July 2019; accepted 15 February 2020; published 31 May 2020. |
Contenido : |
Abstract:
A plot study was conducted at the Gatton Research Dairy, Queensland, Australia, to quantify the effects of 5 regrowth periods (9, 11, 14, 16 and 18 days) and 4 vertical strata on the composition and nutritive value of kikuyu (Cenchrus clandestinus) pastures using a block factorial design with 4 replicates. Pasture samples were analyzed for crude protein (CP), ethanol-soluble carbohydrates (ESC), acid detergent fiber (ADF), neutral detergent fiber (aNDFom), in vitro indigestible neutral detergent fibre (iNDF240) and minerals. Metabolizable energy (ME) was then calculated from the concentrations of other nutrients. Regardless of the stage of regrowth, stems were located mainly in the bottom 1 or 2 strata, while leaves were present mainly in the top 2 or 3 strata. CP, ESC and ME declined, but aNDFom, ADF and iNDF240 increased with stage of regrowth and from top to bottom of the swards (P<0.05). While herbage quality variables were affected by both factors, vertical stratum had a much larger impact on quality than stage of regrowth. These results indicate that grazing management of kikuyu pastures should be based not only on stage of regrowth but also on level of defoliation, as both have strong impacts on the nutritive value of the consumed forage. |
Palabras claves : |
CHEMICAL COMPOSITION; GRAZING MANAGEMENT; LEAF STAGE; SWARD STRUCTURE; TROPICAL PASTURES. |
Asunto categoría : |
F60 Fisiología y bioquímica de la planta |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/14513/1/Savian-2020.pdf
http://www.tropicalgrasslands.info/index.php/tgft/article/view/488/388
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Marc : |
LEADER 02244naa a2200265 a 4500 001 1061175 005 2020-07-01 008 2020 bl uuuu u00u1 u #d 022 $a2346-3775 024 7 $a10.17138/TGFT(8)141-146$2DOI 100 1 $aBENVENUTTI, M.A. 245 $aThe effect of stage of regrowth on the physical composition and nutritive value of the various vertical strata of kikuyu (Cenchrus clandestinus) pastures.$h[electronic resource] 260 $c2020 500 $aArticle history: Received for publication 2 July 2019; accepted 15 February 2020; published 31 May 2020. 520 $aAbstract: A plot study was conducted at the Gatton Research Dairy, Queensland, Australia, to quantify the effects of 5 regrowth periods (9, 11, 14, 16 and 18 days) and 4 vertical strata on the composition and nutritive value of kikuyu (Cenchrus clandestinus) pastures using a block factorial design with 4 replicates. Pasture samples were analyzed for crude protein (CP), ethanol-soluble carbohydrates (ESC), acid detergent fiber (ADF), neutral detergent fiber (aNDFom), in vitro indigestible neutral detergent fibre (iNDF240) and minerals. Metabolizable energy (ME) was then calculated from the concentrations of other nutrients. Regardless of the stage of regrowth, stems were located mainly in the bottom 1 or 2 strata, while leaves were present mainly in the top 2 or 3 strata. CP, ESC and ME declined, but aNDFom, ADF and iNDF240 increased with stage of regrowth and from top to bottom of the swards (P<0.05). While herbage quality variables were affected by both factors, vertical stratum had a much larger impact on quality than stage of regrowth. These results indicate that grazing management of kikuyu pastures should be based not only on stage of regrowth but also on level of defoliation, as both have strong impacts on the nutritive value of the consumed forage. 653 $aCHEMICAL COMPOSITION 653 $aGRAZING MANAGEMENT 653 $aLEAF STAGE 653 $aSWARD STRUCTURE 653 $aTROPICAL PASTURES 700 1 $aFINDSEN, G. 700 1 $aSAVIAN, J.V. 700 1 $aMAYER, D.G. 700 1 $aBARBER, D.G. 773 $tTropical Grassland-Forrajes Tropicales, 2020$gv.8(2), p. 141-146. Doi: 10.17138/TGFT(8)141-146
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Biblioteca(s): INIA Treinta y Tres. |
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Biblioteca(s): INIA Treinta y Tres. |
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Funding for this work was provided by the Instituto Nacional de Investigación Agropecuaria (INIA-Uruguay) and the USDA-ARS...Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : Internacional - -- |
Biblioteca(s): INIA Las Brujas; INIA Treinta y Tres. |
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Biblioteca(s): INIA Treinta y Tres. |
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