Fecha/hora: 20/05/2024 14:07:42

Biblioteca(s): 	INIA Las Brujas.	
Fecha corriente: 	22/07/2018	
Fecha de la última actualización: 	12/02/2021	
Autoria: 	DINI, Y.; GERE, J.I.; CAJARVILLE, C.; CIGANDA, V.	
Afiliación: 	YOANA FATIMA DINI VILAR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOSÉ IGNACIO GERE, Universidad Tecnológica Nacional, Facultad Regional Buenos Aires.; CECILIA CAJARVILLE, Universidad de la República (UdelaR)/ Facultad de Veterinaria; VERONICA SOLANGE CIGANDA BRASCA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.	
Título: 	Using highly nutritious pastures to mitigate enteric methane emissions from cattle grazing systems in South America.	
Año de publicación: 	2018	
Fuente/Imprenta: 	Animal Production Science, 2018, Volume 58, Issue 12, Pages 2329-2334. Doi: https://doi.org/10.1071/AN16803	
Série: 	1836-0939	
DOI: 	10.1071/AN16803	
Idioma: 	Inglés	
Notas: 	Article history: Received 9 December 2016 / Accepted 3 August 2017 / Published online 23 November 2017.	
Contenido: 	Abstract.
Enteric methane (CH4) emissions are directly related to the quantity and type of feed intake. Existing mitigation strategies, for example, the addition of legumes to grass-based diets and increased use of grains, have been thoroughly researched and applied in different production systems. In this paper, we propose a need to expand the capacity to mitigate enteric CH4 emissions in cattle under grazing conditions. The objective of this paper was to contribute to evaluate a mitigation strategy under grazing conditions of using contrasting levels of pasture quality. The study was performed with 20 heifers twice during the year: winter and spring. Each season, the study employed a crossover design with two treatments and two 5-day measurement periods. The treatments were two pastures with different nutritional values, including a pasture with a low quality (70% of neutral detergent fibre, 1% of ether extract, 8% of non-fibre carbohydrates), 9% of crude protein, 35% of dry matter digestibility and a pasture with a high quality (42% neutral detergent fibre, 1.3% ether extract, 24% non-fibre carbohydrates, 21% crude protein and 63% dry matter digestibility). Enteric CH4 emissions were measured with sulfur hexafluoride tracer technique. The dry matter intake (kg/day) was measured indirectly using titanium dioxide as an external marker. CH4 emissions from animals grazing the high-quality pasture were 14% lower expressed as % of gross energy intake, and 11% lower expressed by unit of dry matter intake (g CH4/kg). These results quantitative showed the alternative to mitigate CH4 emissions from grazing bovines exclusively through the improvement of the forage quality offered. 
© CSIRO.	
Palabras-Clave: 	GRAZING CONDITIONS; PASTURE QUALITY; SF6 TRACER TECHNIQUE.	
Thesagro: 	PASTURAS.	
Categoría del tema: 	--	
Registro original: 	INIA Las Brujas (LB)	
Ejemplares: 	LB - (101650-1) - PXI - AP - DD - PP/ANIMAL PRODUCTION SCIENCE/2018 -  -  - DIS