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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
13/08/2021 |
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Data da última atualização: |
24/09/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MACHADO, V. D.; FONSECA, D. M. da; LIMA, M. A.; MARTUSCELLO, J. A.; PACIULLO, D. S. C.; CHIZZOTTI, F. H. M. |
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Afiliação: |
VITOR D. MACHADO, Universidade Federal de Viçosa; DILERMANDO M. DA FONSECA, Universidade Federal de Viçosa; MARINA A. LIMA, Universidade Federal de Viçosa; JANAINA A. MARTUSCELLO, Universidade Federal de São João del-Rei; DOMINGOS SAVIO CAMPOS PACIULLO, CNPGL; FERNANDA H. M. CHIZZOTTI, Universidade Federal de Viçosa. |
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Título: |
Grazing management strategies for Urochloa decumbens (Stapf) R. Webster in a silvopastoral system under rotational stocking. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Grass and Forage Science, v. 75, p. 266-278, 2020. |
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DOI: |
https://doi.org/10.1111/gfs.12491 |
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Idioma: |
Inglês |
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Conteúdo: |
Our objective was to compare herbage accumulation and nutritive value of Urochloa decumbens (Stapf) R. Webster managed under pre-grazing canopy light interception (LI) targets of 90%, 95% and 100% in silvopastoral system (SPS) and 95% in open pasture (OP; U. decumbens under full sunlight) to establish a pre-grazing target for SPS of ~43% shade. The evaluations were made during two rainy seasons and one dry season. The total herbage accumulation in SPS was lower than in OP at all LI targets and seasons. However, the difference in total herbage accumulation between SPS and OP was reduced when SPS was harvested at 95% LI, with reductions of 20% and 28% in both rainy seasons (12,191 × 15,324 kg DM/ha and 11,158 × 15,424 kg DM/ha respectively). Moreover, under 95% LI in SPS, crude protein concentration was 18% and 19% greater than that in OP in both rainy seasons (155 × 131 g/kg DM and 144 × 121 g/kg DM respectively), thus representing the optimal pre-grazing LI target for U. decumbens in SPS. In addition, a canopy height of 20 cm was necessary for 95% LI in OP and a height of 40 cm in SPS. Therefore, U. decumbens should be grazed at 40 cm canopy height, in SPS with ~43% shade to keep 95% LI as the target. However, this target will only be effective if the shade level is maintained, which will reduce height variation over time. |
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Palavras-Chave: |
Altura do dossel; Herbage accumulation; Light interception; Pastoreio; Shading; Sistema silvipastoril. |
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Thesagro: |
Gramínea Forrageira; Sombreamento; Valor Nutritivo. |
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Thesaurus Nal: |
Nutritive value. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/225155/1/Grazing-management.pdf
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Marc: |
LEADER 02316naa a2200313 a 4500
001 2133540
005 2021-09-24
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1111/gfs.12491$2DOI
100 1 $aMACHADO, V. D.
245 $aGrazing management strategies for Urochloa decumbens (Stapf) R. Webster in a silvopastoral system under rotational stocking.$h[electronic resource]
260 $c2020
520 $aOur objective was to compare herbage accumulation and nutritive value of Urochloa decumbens (Stapf) R. Webster managed under pre-grazing canopy light interception (LI) targets of 90%, 95% and 100% in silvopastoral system (SPS) and 95% in open pasture (OP; U. decumbens under full sunlight) to establish a pre-grazing target for SPS of ~43% shade. The evaluations were made during two rainy seasons and one dry season. The total herbage accumulation in SPS was lower than in OP at all LI targets and seasons. However, the difference in total herbage accumulation between SPS and OP was reduced when SPS was harvested at 95% LI, with reductions of 20% and 28% in both rainy seasons (12,191 × 15,324 kg DM/ha and 11,158 × 15,424 kg DM/ha respectively). Moreover, under 95% LI in SPS, crude protein concentration was 18% and 19% greater than that in OP in both rainy seasons (155 × 131 g/kg DM and 144 × 121 g/kg DM respectively), thus representing the optimal pre-grazing LI target for U. decumbens in SPS. In addition, a canopy height of 20 cm was necessary for 95% LI in OP and a height of 40 cm in SPS. Therefore, U. decumbens should be grazed at 40 cm canopy height, in SPS with ~43% shade to keep 95% LI as the target. However, this target will only be effective if the shade level is maintained, which will reduce height variation over time.
650 $aNutritive value
650 $aGramínea Forrageira
650 $aSombreamento
650 $aValor Nutritivo
653 $aAltura do dossel
653 $aHerbage accumulation
653 $aLight interception
653 $aPastoreio
653 $aShading
653 $aSistema silvipastoril
700 1 $aFONSECA, D. M. da
700 1 $aLIMA, M. A.
700 1 $aMARTUSCELLO, J. A.
700 1 $aPACIULLO, D. S. C.
700 1 $aCHIZZOTTI, F. H. M.
773 $tGrass and Forage Science$gv. 75, p. 266-278, 2020.
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Embrapa Gado de Leite (CNPGL) |
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