Fecha/hora: 11/06/2024 22:49:33

Biblioteca(s): 	INIA La Estanzuela.	
Fecha corriente: 	18/01/2022	
Fecha de la última actualización: 	02/12/2022	
Autoria: 	STIRLING, S.; DIAZ-LAGO, J.E.; REPETTO, J.; PLA, M.; ARROYO, J.; CAJARVILLE, C.	
Afiliación: 	MARÍA SOFÍA STIRLING SANTOS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay./ Departamento de Producción Animal y Salud de Sistemas Productivos (IPAV), Facultad de Veterinaria, Universidad de la República, San José, Uruguay.; JUAN ENRIQUE DIAZ LAGO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay./Research and Development, PGG Wrightson Seeds, San José, Uruguay.; JOSE LUIS REPETTO CAPELLO, Departamento de Producción Animal y Salud de Sistemas Productivos (IPAV), Facultad de Veterinaria, Universidad de la República, San José, Uruguay.; MARCELO PLA TEJERA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOSÉ ARROYO MARTÍNEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. Institute of Animal Science, University of Bonn, Bonn, Germany.; CECILIA CAJARVILLE, Departamento de Producción Animal y Salud de Sistemas Productivos (IPAV), Facultad de Veterinaria, Universidad de la República, San José, Uruguay.	
Título: 	Growth stage and ensiling: impact on chemical composition, conservation quality and in situ ruminal degradability of whole-crop oat.	
Año de publicación: 	2021	
Fuente/Imprenta: 	Journal of the Science of Food and Agriculture. 2021, Volume102, Issue 7, pages 2783-2791. doi: https://doi.org/10.1002/jsfa.11619	
ISSN: 	0022-5142	
DOI: 	10.1002/jsfa.11619	
Idioma: 	Inglés	
Notas: 	Article history: Received 5 March 2021; Revised 2 October 2021; Accepted article published 29 October 2021. -- Corresponding author:   Cajarville, C.; Departamento de Producción Animal y Salud de Sistemas Productivos (IPAV), Facultad de Veterinaria, Universidad de la República, San José, Uruguay; email:ccajarville@fvet.edu.uy  -- Funding: This study was supported by Agencia Nacional de Investigación e Innovación (ANII) scholarship [POS_NAC_2013_1_11406] and research project funding [FMV_3_2013_1_100661].	
Contenido: 	Abstract:
BACKGROUND: The effects of growth stage (GS) and ensiling were assessed on whole-crop oat's (Avena sativa L. cv. Cantara) chemical composition, silage fermentation quality and in situ ruminal degradability. Oat was harvested and ensiled at six GS: boot, heading, water ripe, early milk, early dough and grain ripe (144, 151, 178, 234, 362 and 512 g kg-1 of dry matter (DM) of whole-crop forage, respectively). RESULTS: GS influenced chemical composition, silage fermentation quality and ruminal degradability of whole-crop oat. Lower DM and higher water-soluble carbohydrates (WSC) contents lead to adequate forage compaction and fermentation at early GS; however, effluent was produced until the dough stage (L and Q; P ? 0.003). Advancing in maturity increased (P < 0.001) crop yield (4.5 to 9.4 t DM ha-1), DM (144 to 512 g kg-1), neutral detergent fibre (NDF; 537 to 571 g kg-1 DM), lignin (44.6 to 71.3 g kg-1 DM) and starch contents (26.4 to 201 g kg-1 DM), and reduced (P < 0.001) crude protein (107 to 60 g kg-1 DM) and WSC (115 to 17.5 g kg-1 DM). DM and NDF ruminal degradability declined with maturity for fresh and ensiled forages (L and Q; P < 0.05). Density and buffering capacity decreased with GS (L and Q; P < 0.001), whereas pH and soluble protein increased (L and Q; P ? 0.004). CONCLUSION: The growth stage of oat influenced the nutritive value and ruminal degradation to a greater extent than ensiling, and thus it can play a paramount role in whole-crop oat silage quality. © 2021 Society of Chemical Industry. © 2021 Society of Chemical Industry.	
Palabras-Clave: 	AVENA INTEGRAL; DEGRADACION RUMINAL; FERMANTACION DE ENSILAJE; FIBRA; Fibre; Growth stage; Ruminal degradation; Silage fermentation; Whole-crop oat.	
Categoría del tema: 	--	
Registro original: 	INIA La Estanzuela (LE)	
Ejemplares: 	LE - (103476-1) - PXI - AP - DD - PP/J. Sci.Food and Agric./2021 -  -  - DIS