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Registro Completo |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
18/10/2021 |
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Data da última atualização: |
18/10/2021 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
GARON, P. A.; PINTO, C. E.; SCHIRMANN, J.; SBRISSIA, A. F.; TOMAZELLI, D.; BALDISSERA, T. C. |
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Título: |
Productive parameters in pastoral systems of south Brazil. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
In: 56 REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 56., 2020, Florianópolis, SC. Proceedings... Florianópolis, SC: SBZ, 2021. p. 101 |
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Idioma: |
Inglês |
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Conteúdo: |
The animal production based on pastures can be accomplished with different arrangements of pastoral systems. These arrangements are possible due to the great diversity of natural and cultivated species. However, at farm level it is necessary to combine several forage species with pastoral systems to supply animal feed requirements throughout the year. The objective was to evaluate productive parameters over a year of four distinct pastoral systems. The experiment was carried out at Epagri - Lages, SC, in the growing season 2019-2020. The pastoral systems were: 1 - Natural highland grassland dominated by summer species (NG); 2 - Natural highland grassland overseed with Trifolium repens and Lolium multiflorum and fertilized (NO); 3 - Perennial pasture with Cynodon dactylon cv. Jiggs and self-seeding of T. repens and L. multiflorum (PP); 4 - Annual pastures with Pennisetum sp. and L. multiflorum (AP). These systems were already established in four replications and managed during four years before the evaluation period. Pastures were grazed by cattle in intermittent stocking management. Forage production was estimated by cuts of four samples and 20 visual estimates samples obtained per plot, in each pre and postgrazing conditions, in all grazing cycles. The cuts were made close to the ground, in frames of 0.25 m2 (0.5 x 0.5 m). The forage production was calculated by difference from the pregrazing to the postgrazing forage mass of the previous cycle. The sum of all production cycles resulted in the year production. Samples were dried in an oven with forced air ventilation at 55ºC for 72 hours. The data were subjected to ANOVA and significant results (P<0.05) were compared using the Tukey test (P<0.05). The PP presented the higher forage production (13,044 kg ha year-1), while the other treatments were similar, with values of 9,771, 8,124, 7,639 kg ha year-1 for AP, NO and NG, respectively. The forage pregrazing mass was higher in NG (3,327 kg ha-1), followed by AP (2,536 kg ha-1) that was similar to NO (2,379), and NO did not differ from PP (2,127). For postgrazing mass, NG also showed the higher value (2,688), while PP (1,626) and AP (1,378) were similar, and AP was similar to NO (1,044). The productions observed in our work are in general lower than the potential of species studied, mainly for annual species. These results can be related to the low precipitation during several months of the experiment, in March and April, the total accumulated precipitation was 4,1 mm. However, it is important to note the potential of a perennial system to support better adverse conditions. It was expected a higher production of NO compared to NG due to the overseed of cultivated species and fertilization. The values of pre and postgrazing are important to set management practices and pastures systems with minimal biomass residual to prevent and maintain soil functionalities and processes. The PP was the most productive pasture system, however at farm level, it is important to use more than one strategy to accomplish animal production goals. MenosThe animal production based on pastures can be accomplished with different arrangements of pastoral systems. These arrangements are possible due to the great diversity of natural and cultivated species. However, at farm level it is necessary to combine several forage species with pastoral systems to supply animal feed requirements throughout the year. The objective was to evaluate productive parameters over a year of four distinct pastoral systems. The experiment was carried out at Epagri - Lages, SC, in the growing season 2019-2020. The pastoral systems were: 1 - Natural highland grassland dominated by summer species (NG); 2 - Natural highland grassland overseed with Trifolium repens and Lolium multiflorum and fertilized (NO); 3 - Perennial pasture with Cynodon dactylon cv. Jiggs and self-seeding of T. repens and L. multiflorum (PP); 4 - Annual pastures with Pennisetum sp. and L. multiflorum (AP). These systems were already established in four replications and managed during four years before the evaluation period. Pastures were grazed by cattle in intermittent stocking management. Forage production was estimated by cuts of four samples and 20 visual estimates samples obtained per plot, in each pre and postgrazing conditions, in all grazing cycles. The cuts were made close to the ground, in frames of 0.25 m2 (0.5 x 0.5 m). The forage production was calculated by difference from the pregrazing to the postgrazing forage mass of the previous cycle. The sum of all production cy... Mostrar Tudo |
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Palavras-Chave: |
Annual forage production; beef and dairy production; pasture management. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 03803naa a2200217 a 4500
001 1131347
005 2021-10-18
008 2021 bl uuuu u00u1 u #d
100 1 $aGARON, P. A.
245 $aProductive parameters in pastoral systems of south Brazil.$h[electronic resource]
260 $c2021
520 $aThe animal production based on pastures can be accomplished with different arrangements of pastoral systems. These arrangements are possible due to the great diversity of natural and cultivated species. However, at farm level it is necessary to combine several forage species with pastoral systems to supply animal feed requirements throughout the year. The objective was to evaluate productive parameters over a year of four distinct pastoral systems. The experiment was carried out at Epagri - Lages, SC, in the growing season 2019-2020. The pastoral systems were: 1 - Natural highland grassland dominated by summer species (NG); 2 - Natural highland grassland overseed with Trifolium repens and Lolium multiflorum and fertilized (NO); 3 - Perennial pasture with Cynodon dactylon cv. Jiggs and self-seeding of T. repens and L. multiflorum (PP); 4 - Annual pastures with Pennisetum sp. and L. multiflorum (AP). These systems were already established in four replications and managed during four years before the evaluation period. Pastures were grazed by cattle in intermittent stocking management. Forage production was estimated by cuts of four samples and 20 visual estimates samples obtained per plot, in each pre and postgrazing conditions, in all grazing cycles. The cuts were made close to the ground, in frames of 0.25 m2 (0.5 x 0.5 m). The forage production was calculated by difference from the pregrazing to the postgrazing forage mass of the previous cycle. The sum of all production cycles resulted in the year production. Samples were dried in an oven with forced air ventilation at 55ºC for 72 hours. The data were subjected to ANOVA and significant results (P<0.05) were compared using the Tukey test (P<0.05). The PP presented the higher forage production (13,044 kg ha year-1), while the other treatments were similar, with values of 9,771, 8,124, 7,639 kg ha year-1 for AP, NO and NG, respectively. The forage pregrazing mass was higher in NG (3,327 kg ha-1), followed by AP (2,536 kg ha-1) that was similar to NO (2,379), and NO did not differ from PP (2,127). For postgrazing mass, NG also showed the higher value (2,688), while PP (1,626) and AP (1,378) were similar, and AP was similar to NO (1,044). The productions observed in our work are in general lower than the potential of species studied, mainly for annual species. These results can be related to the low precipitation during several months of the experiment, in March and April, the total accumulated precipitation was 4,1 mm. However, it is important to note the potential of a perennial system to support better adverse conditions. It was expected a higher production of NO compared to NG due to the overseed of cultivated species and fertilization. The values of pre and postgrazing are important to set management practices and pastures systems with minimal biomass residual to prevent and maintain soil functionalities and processes. The PP was the most productive pasture system, however at farm level, it is important to use more than one strategy to accomplish animal production goals.
653 $aAnnual forage production
653 $abeef and dairy production
653 $apasture management
700 1 $aPINTO, C. E.
700 1 $aSCHIRMANN, J.
700 1 $aSBRISSIA, A. F.
700 1 $aTOMAZELLI, D.
700 1 $aBALDISSERA, T. C.
773 $tIn: 56 REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 56., 2020, Florianópolis, SC. Proceedings... Florianópolis, SC: SBZ, 2021. p. 101
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Epagri-Sede (Epagri-Sede) |
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| 1. |  | JUCKSCH, I.; COSTA, L.M.da; MOURA FILHO, W.; RIBEIRO, A.C.; SOPRANO, E. Efeito da calagem na dispersao de argila em um Latossolo Vermelho-Escuro. Revista Ceres, Vicosa, v.33, n.189, p.456-460, set./out. 1986.| Biblioteca(s): Epagri-Sede. |
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