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| Registros recuperados : 17 | |
| 7. |  | LACA, E.; GENRO, T. C. M.; BREMM, C.; GENRO, J.; SCHRIEFER, C. Patch size controls selectivity of sheep grazing grass-clover grasslands. In: ANNUAL MEETING OF THE SOCIETY FOR RANGE MANAGEMENT, 64., 2011, Billings, MT. Abstracts... [Wheat Ridge: Society for Range Management], 2011. p. 392.| Biblioteca(s): Embrapa Pecuária Sul. |
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| 8. | | BRATZ, M. M.; GENRO, T. C. M.; FARIA, B. M de; LACA, E. A.; SISTI, R. N.; CHAVES, D. C. Comportamento ingestivo de bovinos de corte em pastagem natural com diferentes níveis de intensificação. In: SIMPÓSIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PECUÁRIA SUL, 6., 2016, Bagé. Resumos... Bagé: Embrapa Pecuária Sul, 2016. p. 21. Claudia Cristina Gulias Gomes, editora técnica.| Biblioteca(s): Embrapa Pecuária Sul. |
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| 9. | | GENRO, T. C. M.; GARCIA, E. N.; BONILHA, C. L.; ÁVILA, M. R.; FEDRIGO, J. K.; LACA, E. A. Grazing site selection by heifers in improved Pampa grasslands. In: INTERNATIONAL RANGELAND CONGRESS, 9., 2011, Rosario, Argentina. Diverse rangelands for a sustainable society: [proceedings...]. Rosario: Instituto Nacional de Tecnología Agrpecuaria; Asociación Argentina para el Manejo de Pastizales Naturales, 2011. p. 667.| Biblioteca(s): Embrapa Pecuária Sul. |
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| 10. | | FARIA, B. M. de; GENRO, T. C. M.; ROSSETTO, J.; PRATES, E. R.; SISTI, R. N.; LACA, E. A. Feeding behavior of steers on natural grasslands of Southern Brazil. In: INTERNATIONAL RANGELAND CONGRESS, 10., 2016, Saskatoon. The future management of grazing and wild lands in a high-tech world: proceedings. Saskatoon: IRCC, 2016. p. 220-221. 1 pen-drive.| Biblioteca(s): Embrapa Pecuária Sul. |
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| 11. | | SCARLATO, S.; CARRIQUIRY, M.; CARMO, M. do; FABER, A.; GENRO, T. C. M.; LACA, E.; SOCA, P. Foraging behavior of beef cows grazing native grassland: effect of herbage allowance on temporal and spatial grazing patterns. In: JOINT ANNUAL MEETING, 2012, Phoenix. [Abstracts...]. Phoenix: ADSA: ASAS, 2012. Publicado em: Journal of Animal Science, v. 90, p. 502, Supplement 3; Dairy Science, v. 95, Supplement 2.| Biblioteca(s): Embrapa Pecuária Sul. |
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| 12. | | BREMM, C.; CARVALHO, P. C. F.; FONSECA, L.; AMARAL, G. A.; MEZZALIRA, J. C.; PEREZ, N. B.; NABINGER, C.; LACA, E. A. Diet switching by mammalian herbivores in response to exotic grass invasion. Plos One, v. 11, n. 2, e0150167, 26 fev. 2016.| Biblioteca(s): Embrapa Pecuária Sul. |
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| 13. | | MARÍN GÓMEZ, A.; LACA, E. A.; BALDISSERA, T. C.; PINTO, C. E.; GARAGORRY, F. C.; ZUBIETA, A. S.; BREMM, C.; BINDELLE, J.; CARVALHO, P. C. de F. Determining the pre-grazing sward height of Kikuyu grass (Cenchrus clandestinus - Hochst. ex Chiov.) for optimizing nutrient intake rate of dairy heifers. PLos One, v. 17, n. 7, e0269716, July 2022.| Biblioteca(s): Embrapa Pecuária Sul. |
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| 14. | | GENRO, T. C. M.; FEDRIGO, J. K.; PINTO, C. E.; NEVES, F. P.; TRINDADE, J. K.; CARVALHO, C. P. C. F.; NABINGER, C.; LACA, E. A. Structural traits in natural grassland grazed by heifers in Southern Brazil. In: INTERNATIONAL RANGELAND CONGRESS, 9., 2011, Rosario, Argentina. Diverse rangelands for a sustainable society: [proceedings...]. Rosario: Instituto Nacional de Tecnología Agrpecuaria; Asociación Argentina para el Manejo de Pastizales Naturales, 2011. p. 402.| Biblioteca(s): Embrapa Pecuária Sul. |
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| 15. | | GENRO, T. C. M.; CARVALHO, P. C.; SOCA, P.; GARCIA, E. N.; NABINGER, C.; AMARAL, G. do A.; BREMM, C.; LACA, E. A. Técnicas para estimativa de consumo sob pastejo. In: SIMPÓSIO SOBRE MANEJO ESTRATÉGICO DA PASTAGEM, 6., SIMPÓSIO INTERNACIONAL SOBRE PRODUÇÃO ANIMAL EM PASTEJO, 4., 2012, Viçosa, MG. Anais... Viçosa, MG: UFV, DZO, 2012. p. 21-51.| Biblioteca(s): Embrapa Pecuária Sul. |
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| 16. | | CARVALHO, P. C. F.; BREMM, C.; MEZZALIRA, J. C.; FONSECA, L.; TRINDADE, J. K.; BONNET, O. J. F.; TISCHLER, M.; GENRO, T. C. M.; NABINGER, C.; LACA, E. A. Can animal performance be predicted from short-term grazing processes? Animal Production Science, v. 55, n. 3, p. 319-327, 2015.| Biblioteca(s): Embrapa Pecuária Sul. |
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| 17. | | ROSSETTO, J.; GENRO, T. C. M.; FARIA, B. M. de; PRATES, E. R.; SANTOS, A. de S.; VELHO, J. P.; TRINDADE, J. P. P.; PEREIRA, L. G. R.; ZUBIETA, A. S.; LACA, E. A. Nutritional groups of herbaceous species from the Pampas grasslands. In: INTERNATIONAL RANGELAND CONGRESS, 10., 2016, Saskatoon. The future management of grazing and wild lands in a high-tech world: proceedings. Saskatoon: IRCC, 2016. p. 222-223. 1 pen-drive.| Biblioteca(s): Embrapa Pecuária Sul. |
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| Registros recuperados : 17 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sul. Para informações adicionais entre em contato com cppsul.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
06/12/2022 |
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Data da última atualização: |
06/12/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
MARÍN GÓMEZ, A.; LACA, E. A.; BALDISSERA, T. C.; PINTO, C. E.; GARAGORRY, F. C.; ZUBIETA, A. S.; BREMM, C.; BINDELLE, J.; CARVALHO, P. C. de F. |
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Afiliação: |
ALEJANDRA MARÍN GÓMEZ, Federal University of Rio Grande do Sul; EMILIO A. LACA, University of California; TIAGO CELSO BALDISSERA, EPAGRI; CASSIANO EDUARDO PINTO, EPAGRI; FABIO CERVO GARAGORRY, CPPSUL; ANGEL S. ZUBIETA, Federal University of Rio Grande do Sul; CAROLINA BREMM, Federal University of Rio Grande do Sul; JERÔME BINDELLE, Liège University; PAULO CÉSAR DE FACCIO CARVALHO, Federal University of Rio Grande do Sul. |
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Título: |
Determining the pre-grazing sward height of Kikuyu grass (Cenchrus clandestinus - Hochst. ex Chiov.) for optimizing nutrient intake rate of dairy heifers. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
PLos One, v. 17, n. 7, e0269716, July 2022. |
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DOI: |
https://doi. org/10.1371/journal.pone.0269716 |
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Idioma: |
Inglês |
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Conteúdo: |
Understanding the grazing process and animal response to sward structures (e.g., sward height) is key to setting targets for efficient grazing management. We hypothesized that the short-term intake rate (STIR) of dry matter (DM) and digestible organic matter (OM) by dairy heifers is maximized with Kikuyu grass (Cenchrus clandestinus?Hochst. ex Chiov.) of intermediate sward heights. The treatments consisted of five pre-grazing sward heights (10, 15, 20, 25, and 30 cm) randomly assigned to two of ten paddocks. The experimental design included two measurements of each paddock at different periods and times of day. Three Holstein heifers (440 ± 42 kg body weight) were used to determine the STIR, which was estimated using the double-weighing technique with correction for insensible weight losses. The bite mass (BM), bite rate (BR), sward structural characteristics, and nutritional value of herbage samples were assessed. The data were analyzed using mixed models with a factorial arrangement of five sward heights, two times of day, and two evaluation periods. The sward height of Kikuyu grass that maximized both STIRs was approximately 20 cm. The STIR of the DM was 30% and 15% lower than the maximum in the shortest and tallest swards tested, respectively. In swards shorter than 20 cm, the STIR was lower because the BM decreased with sward height, whereas in those greater than 20 cm, the lower BM and STIR of DM was explained by a decrease in bulk density and bite volume. The top stratum was composed mainly of highly digestible leaf blades with similar nutrient content across sward heights; therefore the STIR of digestible OM was also maximized at 20 cm. Hence, the optimal pre-grazing sward height of Kikuyu grass should be managed at 20 cm under rotational stocking systems to maximize nutrient intake rate of dairy heifers. MenosUnderstanding the grazing process and animal response to sward structures (e.g., sward height) is key to setting targets for efficient grazing management. We hypothesized that the short-term intake rate (STIR) of dry matter (DM) and digestible organic matter (OM) by dairy heifers is maximized with Kikuyu grass (Cenchrus clandestinus?Hochst. ex Chiov.) of intermediate sward heights. The treatments consisted of five pre-grazing sward heights (10, 15, 20, 25, and 30 cm) randomly assigned to two of ten paddocks. The experimental design included two measurements of each paddock at different periods and times of day. Three Holstein heifers (440 ± 42 kg body weight) were used to determine the STIR, which was estimated using the double-weighing technique with correction for insensible weight losses. The bite mass (BM), bite rate (BR), sward structural characteristics, and nutritional value of herbage samples were assessed. The data were analyzed using mixed models with a factorial arrangement of five sward heights, two times of day, and two evaluation periods. The sward height of Kikuyu grass that maximized both STIRs was approximately 20 cm. The STIR of the DM was 30% and 15% lower than the maximum in the shortest and tallest swards tested, respectively. In swards shorter than 20 cm, the STIR was lower because the BM decreased with sward height, whereas in those greater than 20 cm, the lower BM and STIR of DM was explained by a decrease in bulk density and bite volume. The top stra... Mostrar Tudo |
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Thesagro: |
Gado Leiteiro; Pastagem. |
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Categoria do assunto: |
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Marc: |
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024 7 $ahttps://doi. org/10.1371/journal.pone.0269716$2DOI
100 1 $aMARÍN GÓMEZ, A.
245 $aDetermining the pre-grazing sward height of Kikuyu grass (Cenchrus clandestinus - Hochst. ex Chiov.) for optimizing nutrient intake rate of dairy heifers.$h[electronic resource]
260 $c2022
520 $aUnderstanding the grazing process and animal response to sward structures (e.g., sward height) is key to setting targets for efficient grazing management. We hypothesized that the short-term intake rate (STIR) of dry matter (DM) and digestible organic matter (OM) by dairy heifers is maximized with Kikuyu grass (Cenchrus clandestinus?Hochst. ex Chiov.) of intermediate sward heights. The treatments consisted of five pre-grazing sward heights (10, 15, 20, 25, and 30 cm) randomly assigned to two of ten paddocks. The experimental design included two measurements of each paddock at different periods and times of day. Three Holstein heifers (440 ± 42 kg body weight) were used to determine the STIR, which was estimated using the double-weighing technique with correction for insensible weight losses. The bite mass (BM), bite rate (BR), sward structural characteristics, and nutritional value of herbage samples were assessed. The data were analyzed using mixed models with a factorial arrangement of five sward heights, two times of day, and two evaluation periods. The sward height of Kikuyu grass that maximized both STIRs was approximately 20 cm. The STIR of the DM was 30% and 15% lower than the maximum in the shortest and tallest swards tested, respectively. In swards shorter than 20 cm, the STIR was lower because the BM decreased with sward height, whereas in those greater than 20 cm, the lower BM and STIR of DM was explained by a decrease in bulk density and bite volume. The top stratum was composed mainly of highly digestible leaf blades with similar nutrient content across sward heights; therefore the STIR of digestible OM was also maximized at 20 cm. Hence, the optimal pre-grazing sward height of Kikuyu grass should be managed at 20 cm under rotational stocking systems to maximize nutrient intake rate of dairy heifers.
650 $aGado Leiteiro
650 $aPastagem
700 1 $aLACA, E. A.
700 1 $aBALDISSERA, T. C.
700 1 $aPINTO, C. E.
700 1 $aGARAGORRY, F. C.
700 1 $aZUBIETA, A. S.
700 1 $aBREMM, C.
700 1 $aBINDELLE, J.
700 1 $aCARVALHO, P. C. de F.
773 $tPLos One$gv. 17, n. 7, e0269716, July 2022.
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