ARTICLES IN JOURNALS by Omar Siguas
Pastoralist households in the Andes have always had to cope with climate uncertainty. Recently, h... more Pastoralist households in the Andes have always had to cope with climate uncertainty. Recently, however, due to a combination of a weak asset base, large inequalities in land and livestock access, and the prevalence of multiple non-climate-related stressors, they are being pushed beyond their range of adaptability. However, the complex, forward-looking and site-specific features of these adaptation strategies remain insufficiently addressed. This article identifies the diverse adaptation trajectories pursued by pastoralist households in the Central Andes. Accumulation of livestock and adherence to the traditional economy are the strategies most often followed by wealthier households, while less well-off households seek further integration into the market economy and asset diversification. Measures aimed at promoting textile manufacturing, favouring the preservation of certain grassland areas, and reducing land fragmentation, seem particularly appropriate for enhancing the livelihoods of Andean pastoralist households.
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ARTICLES IN NON INDEXED JOURNALS by Omar Siguas
Actas de la 51ava Reunión Científica de la Sociedad Española para el Estudio de los Pastos, May 30, 2012
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Actas de 52ava Reunión Científica de la Sociedad Española para el Estudio de Pastos, Apr 30, 2013
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OTHER ARTICLES by Omar Siguas
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CHARLAS PARA VARIOS PÚBLICOS by Omar Siguas
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Resumen El presente estudio se realizó con el objetivo de determinar el efecto de dos estaciones ... more Resumen El presente estudio se realizó con el objetivo de determinar el efecto de dos estaciones (seca y húmeda) sobre las concentraciones plasmáticas de nitrógeno ureico sérico (NUS), glucosa, colesterol y triglicéridos en alpacas Huacaya adultas. Se utilizaron 43 alpacas (38 machos y 5 hembras) a quienes se les extrajo muestras de sangre en los meses más representativos de cada estación (marzo y agosto) mediante punción en la vena yugular utilizando tubos al vacío. El análisis de las muestras se realizó a través de espectrofotometría UV visible. Los datos fueron analizados a través de un anova de una sola vía. Los resultados obtenidos para NUS, glucosa, colesterol y triglicéridos para la estación de seca y húmeda fueron: 18,3±5,8 mg/dL y 29,0±6,4 mg/dL; 136,3±64,0 mg/dL y 183,2±10,3 mg/dL; 18,4±10,3 mg/dL y 14,3±7,7 mg/dL; 8,8±5,2 mg/dL y 7,2±3,4 mg/dL respectivamente. Se encontraron diferencias estadísticas altamente significativas en los niveles de NUS (p<0,01), glucosa (p<0,01) y colesterol (p<0,05) entre estaciones del año; de otro lado, no se encontraron diferencias estadísticas (p>0,05) en los niveles de triglicéridos considerando ambas estaciones del año. Estas diferencias obedecerían a cambios en el flujo de nutrientes influenciados directamente por la disponibilidad de materia seca desde la pradera en cada estación evaluada. Palabras clave: alpacas, NUS, glucosa, colesterol y triglicéridos. Summary The study was made with the goal to determine the effect of two seasons (dry and wet) on the plasma concentrations of blood ureic nitrogen (BUN), glucose, cholesterol and triglycerides in adult Huacaya alpacas. We are used 43 alpacas (38 males and 5 females) it was extracted blood samples in the most representative months of each season (March and August) by means of puncture in the jugular vein using vacuum tubes. For the analysis we used the spectrophotometer method. The data were analyzed through anova of a single via. The results obtained for SUM, glucose, cholesterol and triglycerides for wet and dry season were: 18,3±5,8 mg/dL and 29,0±6,4 mg/dL; 136,3±64,0 mg/dL and 183,2±10,3 mg/dL; 18,4±10,3 mg/dL and 14,3±7,7 mg/dL; 8,8±5,2 mg/dL and 7,2±3,4 mg/dL respectively. There was significant statistical differences in the BUN levels (p<0,01), glucose (p<0,01) and cholesterol (p<0,05) between seasons of the year; of another side, were not statistical differences (p>0,05) in the levels of triglycerides considering both seasons of the year. These differences would be due to changes in the flow of nutrients influenced directly by the availability of dry matter from the range in each evaluated season.
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Revista de Investigaciones Veterinarias del Perú, 2012
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In order to make a serum profile of vicunas, the levels of hematocrite, hemoglobin, glucose, tota... more In order to make a serum profile of vicunas, the levels of hematocrite, hemoglobin, glucose, total protein, and cholesterol were established. There were taken 24 blood samples of adult vicunas (7 male and 17 female) from the South American Camelids Research Center Lachocc of Huanca-velica National University, caught in the 2004 campaign. For the analyses were used microhema-tocrite and spectrophotometer methods. The results for both sexes for hematocrite, hemoglobin, glucose, total protein, and cholesterol were 37.00 ± 3.02% and 37.40 ± 3.84%; 11.94 ± 0.98 and 12.06 ± 1.24 g/dl and 4.30 ± 3.37 and 5.59 ± 3.15 g/dl, 211.43 ± 90.23 and 116.24 ± 77.44 mg/dl and 230.89 ± 74.76 and 144.25 ± 92.63 mg/dl respectively Con el objetivo de elaborar el perfil sanguíneo de vicuñas, se determinaron los niveles de hematocrito (Ht), hemoglobina (Hb), glucosa (G), proteína total (Pt) y colesterol (C). Se tomaron 24 muestras de sangre de vicuñas adultas (7 machos y 17 hembras) del Centro de Investiga...
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ARTICLES IN JOURNALS by Omar Siguas
ARTICLES IN NON INDEXED JOURNALS by Omar Siguas
OTHER ARTICLES by Omar Siguas
Conference Presentations by Omar Siguas
CHARLAS PARA VARIOS PÚBLICOS by Omar Siguas
Papers by Omar Siguas