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Registro Completo |
Biblioteca(s): |
Embrapa Pecuária Sul. |
Data corrente: |
25/11/2011 |
Data da última atualização: |
15/02/2012 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
LACA, E.; GENRO, T. C. M.; BREMM, C.; GENRO, J.; SCHRIEFER, C. |
Afiliação: |
EMILIO LACA, University of California, Davis, California, United States; TERESA CRISTINA MORAES GENRO, CPPSUL; Carolina Bremm, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; JAIRO GENRO, Universidade Federal de Santa Maria, Santa Maria, Brazil; Craig Schriefer, University of California, Davis, California, United States. |
Título: |
Patch size controls selectivity of sheep grazing grass-clover grasslands. |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
In: ANNUAL MEETING OF THE SOCIETY FOR RANGE MANAGEMENT, 64., 2011, Billings, MT. Abstracts... [Wheat Ridge: Society for Range Management], 2011. p. 392. |
Idioma: |
Inglês |
Conteúdo: |
The trophic interaction between ruminants and grasslands is a fundamental process that shapes landscapes and modulates ecosystem function and productivity. Selective grazing can structure plant communities and thus, the control of selectivity can be used for ecosystems management. We hypothesized that selectivity for clover by sheep can be modulated by changing the degree of interspersion between grass and clover patches. We built 34 x 17 m pastures and modified their vegetation by seeding subclover and using selective broadleaf and grass herbicides to create either four 8.5 x 17 m rectangles or seventeen 2 x 17 m bands dominated by grass or clover. Pastures were grazed in the spring with either four sheep for 12 days or 12 sheep during four days. We measured herbage mass before and after grazing, and observed activity (grazing or other) and location (grass or clover) from 6 AM to 8 PM and determined selectivity as the ratio of total sheep-hours grazing clover divided by sheep-hours grazing grass. Sheep grazed more time in clover than in grass, particularly in the large patches than in the bands (P=0.025, 2.9 vs. 1.4). We did not detect a significant difference due to number of sheep or interaction, but the test had low power due to small sample size. Herbage mass changes also reflected a strong preference for clover, particularly in large patches. These results provide further evidence to the literature that indicates that vegetation pattern can be used as a management factor to modulate plant-animal interactions. MenosThe trophic interaction between ruminants and grasslands is a fundamental process that shapes landscapes and modulates ecosystem function and productivity. Selective grazing can structure plant communities and thus, the control of selectivity can be used for ecosystems management. We hypothesized that selectivity for clover by sheep can be modulated by changing the degree of interspersion between grass and clover patches. We built 34 x 17 m pastures and modified their vegetation by seeding subclover and using selective broadleaf and grass herbicides to create either four 8.5 x 17 m rectangles or seventeen 2 x 17 m bands dominated by grass or clover. Pastures were grazed in the spring with either four sheep for 12 days or 12 sheep during four days. We measured herbage mass before and after grazing, and observed activity (grazing or other) and location (grass or clover) from 6 AM to 8 PM and determined selectivity as the ratio of total sheep-hours grazing clover divided by sheep-hours grazing grass. Sheep grazed more time in clover than in grass, particularly in the large patches than in the bands (P=0.025, 2.9 vs. 1.4). We did not detect a significant difference due to number of sheep or interaction, but the test had low power due to small sample size. Herbage mass changes also reflected a strong preference for clover, particularly in large patches. These results provide further evidence to the literature that indicates that vegetation pattern can be used as a management fact... Mostrar Tudo |
Thesagro: |
Ovelha; Pastagem; Trevo. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/48052/1/SRM-2011-abstracts-title-index.pdf
|
Marc: |
LEADER 02176nam a2200193 a 4500 001 1907385 005 2012-02-15 008 2011 bl uuuu u00u1 u #d 100 1 $aLACA, E. 245 $aPatch size controls selectivity of sheep grazing grass-clover grasslands.$h[electronic resource] 260 $aIn: ANNUAL MEETING OF THE SOCIETY FOR RANGE MANAGEMENT, 64., 2011, Billings, MT. Abstracts... [Wheat Ridge: Society for Range Management], 2011. p. 392.$c2011 520 $aThe trophic interaction between ruminants and grasslands is a fundamental process that shapes landscapes and modulates ecosystem function and productivity. Selective grazing can structure plant communities and thus, the control of selectivity can be used for ecosystems management. We hypothesized that selectivity for clover by sheep can be modulated by changing the degree of interspersion between grass and clover patches. We built 34 x 17 m pastures and modified their vegetation by seeding subclover and using selective broadleaf and grass herbicides to create either four 8.5 x 17 m rectangles or seventeen 2 x 17 m bands dominated by grass or clover. Pastures were grazed in the spring with either four sheep for 12 days or 12 sheep during four days. We measured herbage mass before and after grazing, and observed activity (grazing or other) and location (grass or clover) from 6 AM to 8 PM and determined selectivity as the ratio of total sheep-hours grazing clover divided by sheep-hours grazing grass. Sheep grazed more time in clover than in grass, particularly in the large patches than in the bands (P=0.025, 2.9 vs. 1.4). We did not detect a significant difference due to number of sheep or interaction, but the test had low power due to small sample size. Herbage mass changes also reflected a strong preference for clover, particularly in large patches. These results provide further evidence to the literature that indicates that vegetation pattern can be used as a management factor to modulate plant-animal interactions. 650 $aOvelha 650 $aPastagem 650 $aTrevo 700 1 $aGENRO, T. C. M. 700 1 $aBREMM, C. 700 1 $aGENRO, J. 700 1 $aSCHRIEFER, C.
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Registro original: |
Embrapa Pecuária Sul (CPPSUL) |
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Registros recuperados : 34 | |
2. | | GENRO, T. C. M.; BREMM, C.; TRINDADE, J. K. da; VARELLA, A. C.; SOCA, P. Daily faecal excretion of alkane C32 in beef cattle females grazing natural grasslands in southern Brazil and in Uruguay. In: INTERNATIONAL GRASSLAND CONGRESS, 22., 2013, Sidney. Revitalising grasslands to sustain our communities: proceedings. New South Wales: MCI Australia, 2013. p. 698-699. Editors David L. Michalk, Geoffrey D. Millar, Warwick B. Badgery, Kim M. Broadfoot.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Pecuária Sul. |
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3. | | LONGHI, P.; CERIOTTI, I. S.; BREMM, C.; MAIA, J. D. G.; RITSCHEL, P. S. Determinação do perfil genético de cultivares de uva. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA, 10.; ENCONTRO DE PÓS-GRADUANDOS DA EMBRAPA UVA E VINHO, 6., 2012, Bento Gonçalves. Resumos... Bento Gonçalves: Embrapa Uva e Vinho, 2012. p. 32.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Uva e Vinho. |
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4. | | 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.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Pecuária Sul. |
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7. | | LONGHI, P.; BREMM, C.; ARAUJO JUNIOR, A. T. de; BRUSTOLIN, J. G.; FONTANA, V.; RITSCHEL, P. S. Avaliação da diversidade genética do banco ativo de germoplasma de pera (BAG-Pera) utilizando marcadores moleculares SSR. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 3., 2014, Santos, SP. Resumos... Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2014.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Uva e Vinho. |
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9. | | LONGHI, P.; BREMM, C.; ARAUJO JUNIOR, A. T. de; BRUSTOLIN, J. G.; FONTANA, V.; RITSCHEL, P. S. Diversidade genética do Banco Ativo de Germoplasma de Pera avaliada com o uso de marcadores moleculares SSR. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA UVA E VINHO, 12., ENCONTRO DE PÓS-GRADUANDOS DA EMBRAPA UVA E VINHO, 8., 2014, Bento Gonçalves. Resumos... Bento Gonçalves: Embrapa Uva e Vinho, 2014. p. 45Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Uva e Vinho. |
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10. | | CARVALHO, P. C. F.; BREMM, C.; GIBB, M. J.; PEREZ, N. B.; FONSECA, L.; AMARAL, G. A. Dietary selection of heifers in natural grasslands: effect of time of day and phenological stage. In: GENERAL MEETING OF THE EUROPEAN GRASSLAND FEDERATION, 23., 2010, Kiel. Grassland in a changing world. Duderstadt: Mecke-Druck, 2010. EGF 2010.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Pecuária Sul. |
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11. | | MORAIS, S. L.; SILVEIRA, M. C. T. da; BREMM, C.; GENRO, T. C. M.; CORRÊA, E. B.; TRENTIN, G. Suficiência amostral para avaliação da estrutura vertical de campo nativo sob diferentes níveis de intensificação. In: CONGRESSO DE INICIAÇÃO CIENTÍFICA, 23.; ENCONTRO DE PÓS-GRADUAÇÃO, 16., 2014, Pelotas. Anais... Pelotas: UFPel, 2014. 1 CD-ROM.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Pecuária Sul. |
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13. | | PINTO, D. G.; FONTANA, D. C.; DALMAGO, G. A.; FOCHESATTO, E.; VICARI, M. B.; BREMM, C.; CUNHA, G. R. da; GOUVEA, J. A. de; SANTI, A. Correlations between spectral and biophysical data obtained in canola canopy cultivated in the subtropical region of Brazil. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 52, n. 10, p. 825-832, out. 2017. Título em português Correlações entre dados espectrais e biofísicos em dossel de canola cultivada na região subtropical do Brasil.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Trigo; Embrapa Unidades Centrais. |
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14. | | BREMM, C.; CARVALHO, P. C. F.; PEREZ, N. B.; FONSECA, L.; ELEJALDE, D. A. G.; AMARAL, G. A.; MOOJEN, F. G.; CORREIA, L. H. S. Feeding choices by cattle and sheep grazing heterogeneous pastoral environments. In: INTERNATIONAL RANGELAND CONGRESS, 9., 2011, Rosario, Argentina. Diverse rangelands for a sustainable society: [proceedings...]. Rosario: Instituto Nacional de Tecnología Agropecuaria; Asociación Argentina para el Manejo de Pastizales Naturales, 2011. p. 596.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Pecuária Sul. |
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15. | | MEZZALIRA, J. C.; CARVALHO, P. C. F.; AMARAL, M. F.; BREMM, C.; TRINDADE, J. K.; GONÇALVES, E. N.; GENRO, T. C. M.; SUÑÉ, R. W. Manejo do milheto em pastoreio rotativo para maximizar a taxa de ingestão por vacas leiteiras. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Belo Horizonte, v. 65, n. 3, p. 833-840, jun. 2013.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Pecuária Sul. |
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16. | | CARVALHO, P. C. de F.; SILVA, J. L. S. da; MORAES, A. de; FONTANELI, R. S.; MACARI, S.; BREMM, C.; TRINDADE, J. K. da. Manejo de animais em pastejo em sistemas de integração lavoura-pecuária. In: SIMPÓSIO INTERNACIONAL EM INTEGRAÇÃO LAVOURA-PECUÁRIA, 2007, Curitiba. [Anais...]. Curitiba: UFPR; Porto Alegre: UFRGS; [s.l.]: Ohio State University, 2007. 1 CD ROM. 15 p.Tipo: Artigo em Anais de Congresso / Nota Técnica |
Biblioteca(s): Embrapa Trigo. |
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17. | | SAVIAN, J. V.; GENRO, T. C. M.; BARTH NETO, A.; BREMM, C.; AZEVEDO, E. B.; DAVID, D. B.; GONDA, H. L.; CARVALHO, P. C. F. Comparison of faecal crude protein and n-alkanes techniques to estimate herbage intake by grazing sheep. Animal Feed Science and Technology, v. 242, p. 144?149, 2018.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Pecuária Sul. |
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18. | | 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.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Pecuária Sul. |
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19. | | 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.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Pecuária Sul. |
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20. | | MONTAGNER, D. B.; ROCHA, M. G. da; GENRO, T. C. M.; BREMM, C.; SANTOS, D. T. dos; ROMAN, J.; ROSO, D. Ingestão de matéria seca por novilhas de corte em pastagem de milheto Ciência Rural, Santa Maria, v.41, n.4, p.686-691, abr. 2011.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
Biblioteca(s): Embrapa Pecuária Sul. |
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Registros recuperados : 34 | |
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Nenhum registro encontrado para a expressão de busca informada. |
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