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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
27/11/2025 |
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Data da última atualização: |
27/11/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MENEGAZZI, G.; DORAO, C.; LOZA, C.; TALMÓN, D.; MATTIAUDA, D. A.; GENRO, T. C. M.; GERRITS, W. J. J.; DIJKSTRA, J.; CHILIBROSTE, P. |
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Afiliação: |
GABRIEL MENEGAZZI, UNIVERSIDAD DE LA REPÚBLICA; CAROLINA DORAO, UNIVERSIDAD DE LA REPÚBLICA; CECILIA LOZA, UNIVERSIDAD DE LA REPÚBLICA; DANIEL TALMÓN, UNIVERSIDAD DE LA REPÚBLICA; DIEGO A. MATTIAUDA, UNIVERSIDAD DE LA REPÚBLICA; TERESA CRISTINA MORAES GENRO, CPPSUL; WALTER J. J. GERRITS, WAGENINGEN UNIVERSITY AND RESEARCH; JAN DIJKSTRA, WAGENINGEN UNIVERSITY AND RESEARCH; PABLO CHILIBROSTE, UNIVERSIDAD DE LA REPÚBLICA. |
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Título: |
Effects of postgrazing sward height on individual and per-hectare milk production of supplemented high-producing dairy cows. |
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Ano de publicação: |
2025 |
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Fonte/Imprenta: |
Journal of Dairy Science, v. 108, n. 12, p. 13326-13343, 2025. |
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DOI: |
https://doi.org/10.3168/jds.2025-26767 |
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Idioma: |
Inglês |
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Conteúdo: |
Residual sward height management is a key factor influencing milk production and grazed forage utilization per cow and per hectare in pasture-based dairy systems. This study evaluated the effects of postgrazing sward height on forage growth rate and DMI, milk production, and BCS in supplemented, high-producing dairy cows. The study captured cumulative treatment effects on animal performance across nearly an entire lactation, as well as sward dynamics over most of the tall fescue growing season. Thirty-two multiparous Holstein cows were assigned to 2 treatments: the control treatment, with a postgrazing sward height of 5.0 to 7.0 cm (CT), and the high treatment, with a postgrazing sward height of 12.0 to 15.0 cm (HI). The study spanned 215 d of grazing on a Lolium arundinaceum sward in a randomized complete block design, with 4 blocks, each measuring 3.2 ha, and consisted of 2 paddocks, each measuring 1.6 ha. Cows had one grazing session between milkings and were supplemented with a mixed ration in the opposite session. Rotational grazing was employed, with new strips allocated once the postgrazing sward height for each treatment was achieved. A new grazing cycle was initiated when plants reached the 2.5 to 3.0-leaf phenological state. Any extra or unused areas within a grazing cycle were always recorded. The postgrazing sward heights were 7.7 and 14.4 cm for the CT and HI treatment, respectively. Forage growth rate tended to be 21% higher in the HI treatment (40 vs. 33 kg DM/ha per day), and cows stayed longer per strip (3.9 vs. 2.9 d) and had 2.5 times more grazing cycles (8.3 vs. 3.3). Total forage disappearance was similar between treatments. Cows in the HI treatment had greater individual grazed forage DMI (+2.0 kg/cow) and BCS throughout lactation compared with CT cows. The HI treatment also increased the individual milk production by 10% (31.5 vs. 34.5 kg milk/d) while reducing concentrate intake per unit of milk by 10%, resulting in a tendency for higher income over feed costs at cow level. However, although we observed a tendency for a higher forage growth rate, this approach required a larger grazing area (1.18 vs. 1.60 ha/4 cows), leading to a trend toward 21% lower milk output per hectare (23,598 vs. 18,528 kg milk/ha). In contrast, the CT treatment supported a higher stocking rate but resulted in lower grazed forage DMI, higher supplemental feed input per hectare and slower BCS recovery. These findings highlight the importance of aligning grazing strategies with system-specific goals. Farmers seeking to maximize land productivity may favor lower postgrazing sward heights, although these must be managed carefully to prevent adverse effects on animal health, reproduction, and long-term productivity due to slower BCS recovery during lactation and lower BCS at the onset of dry off. Conversely, systems aiming to reduce feed costs may benefit from a higher residual sward height, which enhances individual cow performance and BCS while decreasing reliance on supplemental feed MenosResidual sward height management is a key factor influencing milk production and grazed forage utilization per cow and per hectare in pasture-based dairy systems. This study evaluated the effects of postgrazing sward height on forage growth rate and DMI, milk production, and BCS in supplemented, high-producing dairy cows. The study captured cumulative treatment effects on animal performance across nearly an entire lactation, as well as sward dynamics over most of the tall fescue growing season. Thirty-two multiparous Holstein cows were assigned to 2 treatments: the control treatment, with a postgrazing sward height of 5.0 to 7.0 cm (CT), and the high treatment, with a postgrazing sward height of 12.0 to 15.0 cm (HI). The study spanned 215 d of grazing on a Lolium arundinaceum sward in a randomized complete block design, with 4 blocks, each measuring 3.2 ha, and consisted of 2 paddocks, each measuring 1.6 ha. Cows had one grazing session between milkings and were supplemented with a mixed ration in the opposite session. Rotational grazing was employed, with new strips allocated once the postgrazing sward height for each treatment was achieved. A new grazing cycle was initiated when plants reached the 2.5 to 3.0-leaf phenological state. Any extra or unused areas within a grazing cycle were always recorded. The postgrazing sward heights were 7.7 and 14.4 cm for the CT and HI treatment, respectively. Forage growth rate tended to be 21% higher in the HI treatment (40 vs. 33 kg DM... Mostrar Tudo |
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Thesagro: |
Manejo; Pastagem; Vaca Leiteira. |
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Categoria do assunto: |
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Marc: |
LEADER 03844naa a2200265 a 4500
001 2182010
005 2025-11-27
008 2025 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3168/jds.2025-26767$2DOI
100 1 $aMENEGAZZI, G.
245 $aEffects of postgrazing sward height on individual and per-hectare milk production of supplemented high-producing dairy cows.$h[electronic resource]
260 $c2025
520 $aResidual sward height management is a key factor influencing milk production and grazed forage utilization per cow and per hectare in pasture-based dairy systems. This study evaluated the effects of postgrazing sward height on forage growth rate and DMI, milk production, and BCS in supplemented, high-producing dairy cows. The study captured cumulative treatment effects on animal performance across nearly an entire lactation, as well as sward dynamics over most of the tall fescue growing season. Thirty-two multiparous Holstein cows were assigned to 2 treatments: the control treatment, with a postgrazing sward height of 5.0 to 7.0 cm (CT), and the high treatment, with a postgrazing sward height of 12.0 to 15.0 cm (HI). The study spanned 215 d of grazing on a Lolium arundinaceum sward in a randomized complete block design, with 4 blocks, each measuring 3.2 ha, and consisted of 2 paddocks, each measuring 1.6 ha. Cows had one grazing session between milkings and were supplemented with a mixed ration in the opposite session. Rotational grazing was employed, with new strips allocated once the postgrazing sward height for each treatment was achieved. A new grazing cycle was initiated when plants reached the 2.5 to 3.0-leaf phenological state. Any extra or unused areas within a grazing cycle were always recorded. The postgrazing sward heights were 7.7 and 14.4 cm for the CT and HI treatment, respectively. Forage growth rate tended to be 21% higher in the HI treatment (40 vs. 33 kg DM/ha per day), and cows stayed longer per strip (3.9 vs. 2.9 d) and had 2.5 times more grazing cycles (8.3 vs. 3.3). Total forage disappearance was similar between treatments. Cows in the HI treatment had greater individual grazed forage DMI (+2.0 kg/cow) and BCS throughout lactation compared with CT cows. The HI treatment also increased the individual milk production by 10% (31.5 vs. 34.5 kg milk/d) while reducing concentrate intake per unit of milk by 10%, resulting in a tendency for higher income over feed costs at cow level. However, although we observed a tendency for a higher forage growth rate, this approach required a larger grazing area (1.18 vs. 1.60 ha/4 cows), leading to a trend toward 21% lower milk output per hectare (23,598 vs. 18,528 kg milk/ha). In contrast, the CT treatment supported a higher stocking rate but resulted in lower grazed forage DMI, higher supplemental feed input per hectare and slower BCS recovery. These findings highlight the importance of aligning grazing strategies with system-specific goals. Farmers seeking to maximize land productivity may favor lower postgrazing sward heights, although these must be managed carefully to prevent adverse effects on animal health, reproduction, and long-term productivity due to slower BCS recovery during lactation and lower BCS at the onset of dry off. Conversely, systems aiming to reduce feed costs may benefit from a higher residual sward height, which enhances individual cow performance and BCS while decreasing reliance on supplemental feed
650 $aManejo
650 $aPastagem
650 $aVaca Leiteira
700 1 $aDORAO, C.
700 1 $aLOZA, C.
700 1 $aTALMÓN, D.
700 1 $aMATTIAUDA, D. A.
700 1 $aGENRO, T. C. M.
700 1 $aGERRITS, W. J. J.
700 1 $aDIJKSTRA, J.
700 1 $aCHILIBROSTE, P.
773 $tJournal of Dairy Science$gv. 108, n. 12, p. 13326-13343, 2025.
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Embrapa Pecuária Sul (CPPSUL) |
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| Registros recuperados : 19 | |
| 3. |  | SANTOS, K. E. dos; HASHIMOTO, J. M.; FRANCO, L. J. D.; MATOS FILHO, C. H. A. Otimização do processo de branqueamento para melhoria da qualidade do feijão-verde [Vigna unguiculata(L.)Walp.]congelado. In: JORNADA DE INICIAÇÃO CIENTÍFICA DA EMBRAPA MEIO-NORTE, 9., 2023, Teresina, PI. Anais... Teresina: Embrapa Meio-Norte, 2024. p. 71. (Embrapa Meio-Norte. Eventos técnicos & científicos, 1).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 6. | | LOPES, E. M. L; FREIRE FILHO, F. R.; GOMES, R. L. F.; MATOS FILHO, C. H. A. Caracterização morfo-agronômica de cultivares locais de feijão-caupi do grupo Canapu. In: CONGRESSO NACIONAL DE FEIJÃO-CAUPI, 1.; REUNIÃO NACIONAL DE FEIJÃO-CAUPI, 6., 2006, Teresina. Tecnologias para o agronegócio: anais. Teresina: Embrapa Meio-Norte, 2006. 1 CD-ROM. (Embrapa Meio-Norte. Documentos, 121).| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 8. | | MATOS FILHO, C. H. A.; GOMES, R. L. F.; FREIRE FILHO, F. R.; LOPES, A. C. A. Controle genético do comprimento e do número de nós do ramo principal em feijão-caupi. In: CONGRESSO NACIONAL DE FEIJÃO-CAUPI, 1.; REUNIÃO NACIONAL DE FEIJÃO-CAUPI, 6., 2006, Teresina. Tecnologias para o agronegócio: anais. Teresina: Embrapa Meio-Norte, 2006. 1 CD-ROM. (Embrapa Meio-Norte. Documentos, 121).| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 9. | | SILVA, E. M.; GOMES, R. L. F.; FREIRE FILHO, F. R.; LOPES, E. M. L.; MATOS FILHO, C. H. A.; SOUZA, C. L. C. de. Avaliação e seleção de linhagens de caupi para produção de grãos verdes. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA, 12., 2004, Teresina. Resumos...Teresina: UFPI, 2004. p. 20| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 10. | | AZEVEDO, D. M. P. de; MATOS FILHO, C. H. A.; ARAÚJO, E. C. E.; SOUZA, V. A. B. de; RIBEIRO, A. M. B. Seleção de caracteres para o melhoramento genético em Jatropha curcas L. por meio de técnicas de componentes principais. In: SIMPÓSIO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2008, Brasilia, DF. Anais...Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2008. p. 467| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 12. | | MATOS FILHO, C. H. A.; GOMES, R. L. F.; FREIRE FILHO, F. R.; ROCHA, M. de M.; LOPES, Â. C. de A.; NUNES, J. A. R. Herança de caracteres relacionados à arquitetura da planta em feijão-caupi. Ciência Rural, Santa Maria, v. 44, n. 4, p. 599-604, abr. 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 13. | | SILVA, I. C. V.; GOMES, R. L. F.; LOPES, A. C. de A.; SILVA, V. B. da; MATOS FILHO, C. H. A.; FRANCO, L. J. D. Teor de compostos cianogênicos em linhagens de feijão-fava (Phaseolus Lunatus L.). n: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 13., 2025, Luís Correia. Inovação e Sustentabilidade para o Futuro da Agricultura: anais. Recife: Even3; Luís Correia: Sociedade Brasileira de Melhoramento de Plantas, 2025. On line.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 14. | | AZEVEDO, D. M. P. de; MATOS FILHO, C. H. A.; ARAÚJO, E. C. E.; SOUZA, V. A. B. de; RIBEIRO, A. M. B. Utilização de características da semente na quantificação de divergência genética entre indivíduos de uma população de Jatropha curcas L. In: SIMPÓSIO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2008, Brasilia, DF. Anais...Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2008. p. 471| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 15. | | MATOS FILHO, C. H. A.; GOMES, R. L. F.; ROCHA, M. de M.; FREIRE FILHO, F. R.; LOPES, A. C. de A. Potencial produtivo de progênies de feijão-caupi com arquitetura ereta de planta. Ciência Rural, Santa Maria, v. 39, n. 2, p. 348-354, mar./abr. 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 16. | | RAMOS, H. M. M.; VALLADARES, G. S.; ANDRADE JUNIOR, A. S. de; MATOS FILHO, C. H. A.; SOUSA, R. S. de; MOUSINHO, F. E. P. Pedotransference functions for prediction of density in soils of Piauí, Brazil. Brazilian Journal of Development, Curitiba, v. 8, n. 7, p. 50832-50850, jul. 2022.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 5 |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 17. | | SOUSA, S. R. de; COSTA, M. F.; MATOS FILHO, C. H. A.; VASCONCELOS, L. F. L.; ARAUJO, A. S. F. de; CASTRO, A. A. J. F.; FARIAS, R. R. S. de; FERREIRA-GOMES, R. L.; LOPES, A. C. de A. Assessment of the phenotypic diversity in natural populations of Annona coriacea Mart.: implications for breeding. Genetic Resources and Crop Evolution, v. 69, n. 3, p. 1121-1135, Mar. 2022. Published online: 29 November 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 18. | | CARVALHO JÚNIOR, J. E. V. de; MATOS FILHO, C. H. A.; GOMES, R. L. F.; LOPES, A. C. de A.; LIMA, M. A. C. de; LIMA NETO, F. P. Genetic diversity among mango hybrids in the Brazilian semi-arid region. Revista Caatinga, v. 34, n. 3, p. 709-719, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Semiárido. |
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| Registros recuperados : 19 | |
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