Nutritive value and leaf/stem ratio of Siam grass with different levels of nitrogen fertilization

The objective of this trial was to assess the nutritive value and the leaf:stem ratio of the subtropical grass Siam grass (Brachiaria mutica ecotype Siam) under different levels of nitrogen (N) fertilization and sequential cuts through spring, summer and autumn. Over already established pasture plot...

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Autores principales: Royo, Leandro Sebastian, Yáñez, Enrique A., Pueyo, Joaquín Dante, Camacho, Maria Belen
Formato: Artículo revista
Lenguaje:Inglés
Publicado: Universidad Nacional del Nordeste 2023
Materias:
Brachiaria mutica
Digestibility
Crude protein
Date of cut
Digestibilidad
Proteína bruta
Fecha de corte
Acceso en línea:https://revistas.unne.edu.ar/index.php/vet/article/view/7052
Aporte de:
Revistas UNNE - Universidad Nacional del Noroeste (UNNE) de Universidad Nacional del Nordeste
id I48-R154-article-7052
record_format ojs
spelling I48-R154-article-70522023-11-28T12:58:51Z Nutritive value and leaf/stem ratio of Siam grass with different levels of nitrogen fertilization Valor nutritivo y relación hoja:tallo en pasto Siam con diferentes niveles de fertilización nitrogenada Royo, Leandro Sebastian Yáñez, Enrique A. Pueyo, Joaquín Dante Camacho, Maria Belen Brachiaria mutica Digestibility Crude protein Date of cut Brachiaria mutica Digestibilidad Proteína bruta Fecha de corte The objective of this trial was to assess the nutritive value and the leaf:stem ratio of the subtropical grass Siam grass (Brachiaria mutica ecotype Siam) under different levels of nitrogen (N) fertilization and sequential cuts through spring, summer and autumn. Over already established pasture plots, four increasing levels of N fertilization were applied (0, 75, 150 and 225 kg N ha-1). The design consisted in three blocks, inside each one the treatments were assigned randomly. Six cuts were done: Oct-18, Nov-28, Jan-10, Feb-21, Apr-3 and May-15. The samples were weighed, separated in leaf and stem and dried in force-draft oven and were analyzed in the laboratory. Crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), estimated digestibility (DIG) and metabolizable energy concentration (EM) were determined. Increasing levels of N fertilization have effect on dry matter yield (DM), CP, NDF, ADF. Digestibility and EM were also little affected by N fertilization. These results show that the nutritive value of this grass did not vary by the N fertilization. The major effect of the N fertilization was the high yield of DM ha-1, it increased significantly. El objetivo del trabajo fue evaluar el valor nutritivo y la relación hoja:tallo de la gramínea subtropical pasto Siam (Brachiaria mutica ecotipo Siam) con diferentes niveles de fertilización nitrogenada en cortes secuenciales en primavera, verano y otoño. En parcelas de la pastura ya establecidas, fueron aplicados cuatro niveles crecientes de fertilización nitrogenada (0, 75, 150, 225 kg N ha-1). El delineamiento se constituyó en tres bloques, dentro de cada uno los tratamientos se distribuyeron aleatoriamente. Se hicieron seis cortes: 18 de octubre, 28 de noviembre, 10 de enero, 21 de febrero, 3 de abril y 15 de mayo. Las muestras fueron pesadas, separadas en hoja y tallo, secadas en estufa de ventilación forzada y analizadas en laboratorio. Se determinó proteína bruta (PB), fibra detergente neutro (FDN), fibra detergente ácido (FDA), y estimadas la digestibilidad y la energía metabolizable (EM). Niveles crecientes de fertilización nitrogenada tiene efecto sobre la productividad de materia seca (MS), PB, FDN y FDA. La digestibilidad y la EM también fueron poco afectadas por la fertilización nitrogenada. Esos resultados muestran que el valor nutritivo del pasto Siam no varió con la fertilización nitrogenada. El principal efecto de la fertilización nitrogenada fue la alta productividad de MS ha-1, que aumentó significativamente. Universidad Nacional del Nordeste 2023-11-28 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unne.edu.ar/index.php/vet/article/view/7052 10.30972/vet.3427052 Revista Veterinaria; Vol. 34 Núm. 2 (2023); 106-110 1669-6840 1668-4834 eng https://revistas.unne.edu.ar/index.php/vet/article/view/7052/6508 https://creativecommons.org/licenses/by/2.5/ar/
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-154
container_title_str Revistas UNNE - Universidad Nacional del Noroeste (UNNE)
language Inglés
format Artículo revista
topic Brachiaria mutica
Digestibility
Crude protein
Date of cut
Brachiaria mutica
Digestibilidad
Proteína bruta
Fecha de corte
spellingShingle Brachiaria mutica
Digestibility
Crude protein
Date of cut
Brachiaria mutica
Digestibilidad
Proteína bruta
Fecha de corte
Royo, Leandro Sebastian
Yáñez, Enrique A.
Pueyo, Joaquín Dante
Camacho, Maria Belen
Nutritive value and leaf/stem ratio of Siam grass with different levels of nitrogen fertilization
topic_facet Brachiaria mutica
Digestibility
Crude protein
Date of cut
Brachiaria mutica
Digestibilidad
Proteína bruta
Fecha de corte
author Royo, Leandro Sebastian
Yáñez, Enrique A.
Pueyo, Joaquín Dante
Camacho, Maria Belen
author_facet Royo, Leandro Sebastian
Yáñez, Enrique A.
Pueyo, Joaquín Dante
Camacho, Maria Belen
author_sort Royo, Leandro Sebastian
title Nutritive value and leaf/stem ratio of Siam grass with different levels of nitrogen fertilization
title_short Nutritive value and leaf/stem ratio of Siam grass with different levels of nitrogen fertilization
title_full Nutritive value and leaf/stem ratio of Siam grass with different levels of nitrogen fertilization
title_fullStr Nutritive value and leaf/stem ratio of Siam grass with different levels of nitrogen fertilization
title_full_unstemmed Nutritive value and leaf/stem ratio of Siam grass with different levels of nitrogen fertilization
title_sort nutritive value and leaf/stem ratio of siam grass with different levels of nitrogen fertilization
description The objective of this trial was to assess the nutritive value and the leaf:stem ratio of the subtropical grass Siam grass (Brachiaria mutica ecotype Siam) under different levels of nitrogen (N) fertilization and sequential cuts through spring, summer and autumn. Over already established pasture plots, four increasing levels of N fertilization were applied (0, 75, 150 and 225 kg N ha-1). The design consisted in three blocks, inside each one the treatments were assigned randomly. Six cuts were done: Oct-18, Nov-28, Jan-10, Feb-21, Apr-3 and May-15. The samples were weighed, separated in leaf and stem and dried in force-draft oven and were analyzed in the laboratory. Crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), estimated digestibility (DIG) and metabolizable energy concentration (EM) were determined. Increasing levels of N fertilization have effect on dry matter yield (DM), CP, NDF, ADF. Digestibility and EM were also little affected by N fertilization. These results show that the nutritive value of this grass did not vary by the N fertilization. The major effect of the N fertilization was the high yield of DM ha-1, it increased significantly.
publisher Universidad Nacional del Nordeste
publishDate 2023
url https://revistas.unne.edu.ar/index.php/vet/article/view/7052
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first_indexed 2024-08-21T22:35:53Z
last_indexed 2024-08-21T22:35:53Z
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