Fecha/hora: 20/05/2024 14:06:09

Biblioteca(s): 	INIA La Estanzuela; INIA Tacuarembó.	
Fecha corriente: 	26/10/2020	
Fecha de la última actualización: 	28/09/2020	
Autoria: 	CLARIGET, J.M.; LA MANNA, A.; LUZARDO, S.; PEREZ, E.; FERNANDEZ, E.; ROIG, G.; AZNÁREZ, V.; BANCHERO, G.	
Afiliación: 	JUAN MANUEL CLARIGET BRIZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ALEJANDRO FRANCISCO LA MANNA ALONSO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SANTIAGO FELIPE LUZARDO VILLAR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; EDUARDO FABIAN PEREZ ARRUTTI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ENRIQUE GENARO FERNANDEZ RODRIGUEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GONZALO ROIG, MARFRIG Group, Río Negro,Uruguay; VALENTÍN AZNÁREZ, MARFRIG Group, Río Negro, Uruguay; GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.	
Título: 	Eucalyptus bark: A new source of fiber from the wood pulp industry for feeding to beef feedlot cattle.	
Año de publicación: 	2020	
Fuente/Imprenta: 	Applied Animal Science, Volume 36, Issue 5, October 2020, Pages 592-599. DOI: https://doi.org/10.15232/aas.2020-02002	
DOI: 	10.15232/aas.2020-02002	
Idioma: 	Inglés	
Notas: 	Article history: Received 28 February 2020, Accepted 26 June 2020, Available online 28 September 2020. ACKNOWLEDGMENTS: This research was supported by the Instituto Nacional
de Investigación Agropecuaria (INIA), Uruguay (grant numbers N-19407, 2016) and the MARFRIG Group industry. The authors wish to thank to the agricultural technicians Christian Solari and Gabriel Fernandez for their.
cooperation.	
Contenido: 	ABSTRACT: Objective: Our objectives were to compare the effects of feeding eucalyptus bark or eucalyptus wood chips, both by-products from the pulp industry, on voluntary feed intake, animal performance, and physiological variables of heifers finished on high-concentrate diets. Materials and Methods: Forty-eight British-breed heifers (Angus, Hereford, and their crosses) that were 22 to 24 mo of age and had an initial BW of 355 ± 8 kg were used. Four heifers were allocated to each of the 12 pens (experimental units). The experiment was a randomized complete block design with 2 treatments and 6 replications each. The 2 different fiber sources (wood chips or bark) were included in the fattening diet in the same proportion (8.9% DM basis). The rest of the ingredients in the diet were the same. The final diet was offered 3 times per day, and heifers were fed for 84 d. Results and Discussion: Fiber source (wood chips vs. bark) did not affect ADG or G:F (P > 0.10). However, DMI (P < 0.01), DP (P = 0.04), and hot carcass weight (P = 0.06) were greater in heifers fed with bark compared with those fed with wood chips. Heifers from the bark treatment spent less time (P = 0.02) chewing than heifers from the wood chips treatment. Implications and Applications: In conclusion, bark could be used as a source of fiber for finishing cattle in high-concentrate diets at the same levels as wood chips. This finding is relevant for the feedlot industry because eucalyptus bark has no industrial uses and would represent a cheaper fiber source than wood chips.	
Palabras-Clave: 	BEEF; EUCALYPTUS; FATTENING; FEED EFFICIENCY; ROUGHAGE.	
Categoría del tema: 	K10 Producción forestal	
Registro original: 	INIA La Estanzuela (LE)	
Ejemplares: 	LE - (103228-1) - PXI - AP - DD - PP/Applied Animal Science/2020 -  -  - DIS
TBO - (103254-1) - PXI - AP - DD -  -  -  - DIS