Cambios bromatológicos y estructurales en Megathyrsus maximum bajo cuatro arreglos silvopastoriles
The aim of this study was to compare the bromatological and structural behavior of Megathyrsus maximus (Poaceae) in four silvopastoral arrangement systems and a treeless prairie. Exclusion cages were used to evaluate four regrowth ages: 7, 14, 21 and 28 days. In each stage, the following were assessed: crude protein, neutral detergent fiber, acid detergent fiber and in situ degradability of dry matter (bromatological) and plant height, stem-leaf ratio and leaf width (structural). Crude protein in M. maximus was affected by silvopastoral arrangement (p < 0.05). The crude protein in Pasto and p-Arbust treatments were 2,42 % less than the mean of p-Arbor, p-Arbust-Arbor and p-Arbust-Arbor-M treatments. The neutral (65,16 %) and acid (37,30 %) detergent fibers were higher in the dry season (p < 0.05). The treatment affected (p < 0.05) plant height, stem-leaf ratio and leaf width, with highest value in p-Arbor (80,26 cm), Pasto (51,75:1 g) and p-Arbust-Arbor (2,73 cm), respectively. The interaction treatment, season and regrowth age affected plant height and leaf width. In the silvopastoral arrangement system with tree cover, plant height and leaf width were higher at 28 regrowth days in the dry season, compared with the Pasto and the p-Arbust treatments. In conclusion, the silvopastoral arrangement system influence the adaptative response of M. maximus, with an increase in crude protein and better response of the plant height and leaf width.
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Corporación Colombiana de Investigación Agropecuaria (Agrosavia)
2019
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Online Access: | http://revistacta.agrosavia.co/index.php/revista/article/view/1458 http://hdl.handle.net/20.500.12324/35044 |
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The aim of this study was to compare the bromatological and structural behavior of Megathyrsus maximus (Poaceae) in four silvopastoral arrangement systems and a treeless prairie. Exclusion cages were used to evaluate four regrowth ages: 7, 14, 21 and 28 days. In each stage, the following were assessed: crude protein, neutral detergent fiber, acid detergent fiber and in situ degradability of dry matter (bromatological) and plant height, stem-leaf ratio and leaf width (structural). Crude protein in M. maximus was affected by silvopastoral arrangement (p < 0.05). The crude protein in Pasto and p-Arbust treatments were 2,42 % less than the mean of p-Arbor, p-Arbust-Arbor and p-Arbust-Arbor-M treatments. The neutral (65,16 %) and acid (37,30 %) detergent fibers were higher in the dry season (p < 0.05). The treatment affected (p < 0.05) plant height, stem-leaf ratio and leaf width, with highest value in p-Arbor (80,26 cm), Pasto (51,75:1 g) and p-Arbust-Arbor (2,73 cm), respectively. The interaction treatment, season and regrowth age affected plant height and leaf width. In the silvopastoral arrangement system with tree cover, plant height and leaf width were higher at 28 regrowth days in the dry season, compared with the Pasto and the p-Arbust treatments. In conclusion, the silvopastoral arrangement system influence the adaptative response of M. maximus, with an increase in crude protein and better response of the plant height and leaf width. |
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Barragán-Hernández, Wilson Andrés Cajas-Girón, Yasmín Socorro |
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Barragán-Hernández, Wilson Andrés Cajas-Girón, Yasmín Socorro Cambios bromatológicos y estructurales en Megathyrsus maximum bajo cuatro arreglos silvopastoriles |
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Barragán-Hernández, Wilson Andrés Cajas-Girón, Yasmín Socorro |
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Barragán-Hernández, Wilson Andrés |
title |
Cambios bromatológicos y estructurales en Megathyrsus maximum bajo cuatro arreglos silvopastoriles |
title_short |
Cambios bromatológicos y estructurales en Megathyrsus maximum bajo cuatro arreglos silvopastoriles |
title_full |
Cambios bromatológicos y estructurales en Megathyrsus maximum bajo cuatro arreglos silvopastoriles |
title_fullStr |
Cambios bromatológicos y estructurales en Megathyrsus maximum bajo cuatro arreglos silvopastoriles |
title_full_unstemmed |
Cambios bromatológicos y estructurales en Megathyrsus maximum bajo cuatro arreglos silvopastoriles |
title_sort |
cambios bromatológicos y estructurales en megathyrsus maximum bajo cuatro arreglos silvopastoriles |
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Corporación Colombiana de Investigación Agropecuaria (Agrosavia) |
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2019 |
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http://revistacta.agrosavia.co/index.php/revista/article/view/1458 http://hdl.handle.net/20.500.12324/35044 |
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AT barraganhernandezwilsonandres cambiosbromatologicosyestructuralesenmegathyrsusmaximumbajocuatroarreglossilvopastoriles AT cajasgironyasminsocorro cambiosbromatologicosyestructuralesenmegathyrsusmaximumbajocuatroarreglossilvopastoriles |
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dig-bac-20.500.12324-350442020-07-08T21:26:21Z Cambios bromatológicos y estructurales en Megathyrsus maximum bajo cuatro arreglos silvopastoriles Barragán-Hernández, Wilson Andrés Cajas-Girón, Yasmín Socorro The aim of this study was to compare the bromatological and structural behavior of Megathyrsus maximus (Poaceae) in four silvopastoral arrangement systems and a treeless prairie. Exclusion cages were used to evaluate four regrowth ages: 7, 14, 21 and 28 days. In each stage, the following were assessed: crude protein, neutral detergent fiber, acid detergent fiber and in situ degradability of dry matter (bromatological) and plant height, stem-leaf ratio and leaf width (structural). Crude protein in M. maximus was affected by silvopastoral arrangement (p < 0.05). The crude protein in Pasto and p-Arbust treatments were 2,42 % less than the mean of p-Arbor, p-Arbust-Arbor and p-Arbust-Arbor-M treatments. The neutral (65,16 %) and acid (37,30 %) detergent fibers were higher in the dry season (p < 0.05). The treatment affected (p < 0.05) plant height, stem-leaf ratio and leaf width, with highest value in p-Arbor (80,26 cm), Pasto (51,75:1 g) and p-Arbust-Arbor (2,73 cm), respectively. The interaction treatment, season and regrowth age affected plant height and leaf width. In the silvopastoral arrangement system with tree cover, plant height and leaf width were higher at 28 regrowth days in the dry season, compared with the Pasto and the p-Arbust treatments. In conclusion, the silvopastoral arrangement system influence the adaptative response of M. maximus, with an increase in crude protein and better response of the plant height and leaf width. El objetivo del estudio fue comparar el comportamiento bromatológico y estructural de Megathyrsus maximus (Poaceae) bajo cuatro arreglos silvopastoriles y una pradera sin árboles. Se utilizaron jaulas de exclusión para evaluar cuatro edades de rebrote: 7, 14, 21 y 28 días. En cada edad, se registró la proteína cruda, fibra en detergente neutro, fibra en detergente ácido y digestibilidad in situ de la materia seca (bromatológico) y altura de planta, relación hoja: tallo y ancho de la hoja (estructural). El arreglo silvopastoril afectó (p < 0,05) el contenido de proteína en M. maximum. El promedio de la proteína en los tratamientos Pasto y p-Arbust, fue 2,42 % menos que el promedio de los tratamientos p-Arbor, p-Arbust-Arbor y p-Arbust-Arbor-M. Los contenidos de fibra en detergente neutro (65,16 %) y ácido (37,30 %) fueron mayores en época seca (p < 0,05). En la respuesta estructural, el tratamiento afectó (p < 0,05) la altura, la relación hoja:tallo y ancho de la hoja, con los mayores registros en p-Arbor (80,26 cm), Pasto (51,75:1 g) y p-Arbust-Arbor (2,73 cm), respectivamente. Se registró interacción de la edad, la época y el arreglo (p < 0,05) en la altura y ancho de la hoja. En estas características, los arreglos silvopastoriles con cobertura arbórea evidenciaron una mejor respuesta en época seca a 28 días, comparado con los sistemas sin árboles. Se concluye que el arreglo silvopastoril influyó en la respuesta adaptativa de M. maximum, con incremento de proteína y mejor respuesta en alto y ancho de hoja. 2019-06-18T13:37:32Z 2019-06-18T13:37:32Z 2019 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://revistacta.agrosavia.co/index.php/revista/article/view/1458 10.21930/rcta.vol20_num2_art:1458 http://hdl.handle.net/20.500.12324/35044 reponame:Biblioteca Digital Agropecuaria de Colombia repourl:https://repository.agrosavia.co instname:Corporación colombiana de investigación agropecuaria AGROSAVIA spa eng http://revistacta.agrosavia.co/index.php/revista/article/view/1458/575 http://revistacta.agrosavia.co/index.php/revista/article/view/1458/576 application/pdf application/pdf Colombia Corporación Colombiana de Investigación Agropecuaria (Agrosavia) Ciencia y Tecnología Agropecuaria; Vol 20 No 2 (2019): Ciencia y Tecnología Agropecuaria Ciencia y Tecnología Agropecuaria; Vol. 20 Núm. 2 (2019): Ciencia y Tecnología Agropecuaria revista Corpoica Ciência e Tecnologia Agropecuária; v. 20 n. 2 (2019): Ciencia y Tecnología Agropecuaria 2500-5308 0122-8706 10.21930/rcta.vol20-num2 |