Fecha/hora: 23/05/2024 02:11:09

Biblioteca(s): 	INIA Treinta y Tres.	
Tipo de la producción científica: 	Artículos en Revistas Indexadas Nacionales	
Circulación/Nivel: 	-- - --	
Fecha corriente: 	16/07/2021	
Fecha de la última actualización: 	16/07/2021	
Autoria: 	ZUBIETA, A. S.; MARÍN, A.; SAVIAN, J.V.; BOLSAN, A. M. SOARES; ROSSETTO, J.; BARRETO, M. T.; BINDELLE, J.; BREMM, C.; QUISHPE, L. V.; DECRUYENAERE, V.; CARVALHO, P. C. DE F.	
Afiliación: 	ANGEL S. ZUBIETA, Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.; ALEJANDRA MARÍN, Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil. // Facultad de Ciencias Agrarias. Dep. Prod. Animal. Universidad Nacional de Colombia, Medellín, Colombia.; JEAN VICTOR SAVIAN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANDERSON M. SOARES BOLZAN, Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.; JUSIANE ROSSETTO, Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.; MARIANA T. BARRETO, Animal Production and Ruminant Nutrition Research Group,  Federal University of Pampa, Itaquí, Brazil.; JÉROMÉ BINDELLE, Precision Livestock and Nutrition Unit, Gembloux Agro-Bio Tech, TERRA, Teaching and Research Centre, University of Liège, Gembloux, Belgium; CAROLINA BREMM, Grazing Ecology Research Group, Federal University of Rio Grande Do Sul, Porto Alegre, Brazil. // Department of Agricultural Research and Diagnosis, Secretariat of Agriculture, Livestock and Rural Development, Porto Alegre, Brazil; LAURA V. QUISHPE, Department of Clinical Veterinary Pathology, Federal University of Rio Grande Do Sul, Porto Alegre, Brazil; VIRGINIE DECRUYENAERE, Productions in Agriculture Department, Animal Production Unit, Walloon Agricultural Research Centre (CRA-W), Gembloux, Belgium The intensity and; PAULO C. DE F. CARVALHO, Grazing Ecology Research Group, Federal University of Rio Grande Do Sul, Porto Alegre, Brazil.	
Título: 	Long-intensity, high-frecuency grazing positively affects defoliating behavior, nutrient intake and blood indicators of nutrition and stress in sheep.	
Año de publicación: 	2021	
Fuente/Imprenta: 	Frontiers in Veterinary Science, June 2021, Volume 8, art. 631820. OPEN ACCESS. Doi: https://doi.org/10.3389/fvets.2021.631820	
ISSN: 	2297-1769	
DOI: 	10.3389/fvets.2021.631820	
Idioma: 	Inglés	
Notas: 	Article history: Received: 21 November 2020 // Accepted: 26 May 2021 // Published: 22 June 2021.	
Contenido: 	The intensity and frequency of grazing affect the defoliating strategy of ruminants, their daily nutrient intake, thus nutrition and physiological status. Italian ryegrass (Lolium multiflorum Lam.) pastures were grazed by sheep either under a low-intensity/high-frequency grazing strategy (Rotatinuous stocking; RN) with nominal pre- and post-grazing sward heights of 18 and 11 cm, respectively, or under a high-intensity/low-frequency strategy (traditional rotational stocking; RT) with nominal pre- and post-grazing sward heights of 25 and 5 cm, respectively. Treatments were arranged under a complete randomized design and evaluated over two periods, in different years. In 2017, the aim was to depict the type of bites that sheep perform during the grazing-down and associate them to the grazing management strategy according to their relative contribution to the diet ingested. In 2018 we estimated the total nutrient intake and evaluated blood indicators of the nutritional status and immune response to stress of sheep. The bite types accounting the most for the diet ingested by RN sheep were those performed on the ?top stratum? of plants with around 20, 15, and 25 cm, whereas the type of bites accounting the most for the diet of RT sheep were those performed on ?grazed plants? with around 10, 5, and ? 3 cm. In 2018, the RN sheep increased by 18% the total organic matter (OM) intake and by 20?25% the intake of soluble nutrients (i.e., crude protein, total soluble sugars, crude fat), digestible OM and of metabolizable energy, and had 17.5, 18, and 6.1% greater blood concentration of glucose, urea nitrogen (BUN) and albumin, respectively, but 17% lower blood neutrophil-to-lymphocyte (N:L) ratio. Sheep grazing vegetative Italian ryegrass pastures under the low-intensity/high-frequency grazing strategy (RN) ingested a diet of better quality from bites allocated on the top stratum of plants, had greater intake of soluble nutrients and blood parameters positively associated with nutritional status and immune response to stress.

Introduction	
Palabras-Clave: 	ANIMAL WELFARE; GRAZING MANAGEMENT MODELS; INGESTIVE COMFORT; NUTRITIONAL STATUS; SWARD HEIGHT.	
Categoría del tema: 	L02 Alimentación animal	
URL: 	http://www.ainfo.inia.uy/digital/bitstream/item/15864/1/Frontiers-veterinary-science-2021-Savian.pdf
https://www.frontiersin.org/articles/10.3389/fvets.2021.631820/full	
Registro original: 	INIA Treinta y Tres (TT)	
Ejemplares: 	TT - (103311-1) - PXI - AP - DD - PP/FRONTIER-VET.-SCIENCE-2021-SAVIAN -  -  - DIS