Fecha/hora: 16/06/2024 06:21:38

Biblioteca(s): 	INIA Las Brujas.	
Fecha corriente: 	21/02/2014	
Fecha de la última actualización: 	15/10/2019	
Autoria: 	JUCHEM, S.O.; BENES, S.E.; ROBINSON, P.H.; GRATTAN, S.R.; VASQUEZ, P.; CHILIBROSTE, P.; BRITO, M.	
Afiliación: 	SÉRGIO O. JUCHEM, Department of Animal Science, University of California, USA; Department of Plant Science, California State University, USA.; SHARON E. BENES, Department of Plant Science, California State University, USA.; P. H. ROBINSON, Department of Animal Science, University of California, USA.; STEPHEN R. GRATTAN, Department of Land and Water Resources, University of California, USA.; PABLO VASQUEZ, Department of Plant Science, California State University, USA.; PABLO CHILIBROSTE SYMONDS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARTIN BRITO, Department of Plant Science, California State University, USA.	
Título: 	Grazing as an alternative for utilization of saline-sodic soils in the San Joaquin Valley: Selenium accretion and performance of beef heifers.	
Año de publicación: 	2012	
Fuente/Imprenta: 	Science of the Total Environment, 1 March 2012, Volume 419, Pages 44-53.	
ISSN: 	0048-9697	
DOI: 	10.1016/j.scitotenv.2011.06.016	
Idioma: 	Inglés	
Notas: 	Article history: Received 22 February 2011 / Revised 3 June 2011 / Accepted 7 June 2011 / Available online 27 January 2012.	
Contenido: 	ABSTRACT.
Two experiments were conducted to evaluate Se accumulation and health of non-pregnant, non-breeding beef cattle grazing on forages with a high Se content due to irrigation with saline drainage water. Heifers grazed experimental pastures of "Jose" tall wheatgrass (TWG; Thinopyrum ponticum var. "Jose") and creeping wildrye (CWR; Leymus triticoides var. "Rio") for190. days in Experiment 1 (2007) and for 165. days in Experiment 2 (2008). In experiment 1, mean Se concentrations were similar in TWG and CWR herbage (4.0 versus 3.7 ± 0.26. mg/kg dry weight; p= 0.34) as was crude protein (113 versus 114 ± 7.9. g/kg dry weight; p= 0.94). Concentrations of Se in blood increased by 300% during the grazing period, and were similar for heifers grazing the TWG or CWR pastures (0.94 versus 0.87 ± 0.03. mg/kg; p= 0.89). Heifers grazing on TWG gained more body weight than did heifers grazing on CWR (0.59 versus 0.27 ± 0.07. kg/days; p< 0.01). In experiment 2, concentration of Se (4.0 versus 2.8. mg/kg ± 0.19. mg/kg dry weight; p< 0.01) and crude protein (79 versus 90 ± 5.6. g/kg dry weight; p< 0.01) differed, for TWG and CWR, respectively. Within 20. days, Se concentrations in blood had increased by 300% and by nearly 200% in heifers grazing on TWG or CWR. All data cited are least square means ± standard error of the mean. Data from our two grazing seasons are consistent in demonstrating the safety of grazing beef cattle for a period of up to 6. months on TWG and CWR forages having high levels of Se due to irrigation with saline drainage water. This suggests that forage production using saline drainage water is a viable alternative for saline soils with limited potential for producing high value, salt-sensitive, crops. 
© 2011 Elsevier B.V.	
Palabras-Clave: 	Drainage water reuse; Liver biopsy; Salinity; Salt-tolerant forages; Selenium toxicity; Tall wheatgrass.	
Categoría del tema: 	L02 Alimentación animal	
Registro original: 	INIA Las Brujas (LB)	
Ejemplares: 	LB - (12813-1) - PXI - AP - DD - PP/SCIENCE TOTAL ENVIRONMENT/2012 -  -  - DIS