search
for
 About Bioline  All Journals  Testimonials  Membership  News


Zootecnia Tropical
Instituto Nacional de Investigaciones Agrícolas Venezuela
ISSN: 0798-7269
Vol. 24, No. 2, 2006, pp. 121-136
Bioline Code: zt06011
Full paper language: English
Document type: Research Article
Document available free of charge

Zootecnia Tropical, Vol. 24, No. 2, 2006, pp. 121-136

 es Evaluaciín de la sostenibilidad de dos modelos ganaderos de la llanura deprimida salina de Tucumán, Argentina
José Nasca , Manuela Toranzos y Natalia R. Banegas

Resumen

Se evaluí la sostenibilidad de dos modelos físicos ganaderos de la llanura deprimida salina de Tucumán (área de probable expansiín ganadera) en relaciín a indicadores ambientales, econímicos y sociales. Se trabají, durante 3 años, con dos modelos físicos pastoriles ( Chloris gayana check for this species in other resources cv Finecut) de engorde de novillos con carga animal similar: T0 = pastoreo continuo (situaciín zonal preponderante) y T1 = pastoreo rotativo racional con suplementaciín estratégica. Dada la escala predial de la experiencia se seleccionaron prioritariamente indicadores ambientales. Se seleccionaron tres tipos de indicadores: 1) Ambientales: producciín ganadera, cobertura de Chloris, malezas, mantillo, suelo desnudo, materia orgánica del suelo, estimaciín de CH4, riesgo de utilizaciín de energía físil; 2) Econímicos: margen bruto de la actividad y 3) Social: responsabilidad técnica. Se utilizí una metodología que se basa en la determinaciín del Índice de Sostenibilidad (IS). Se tomaron como valores umbrales locales aquellos con un 20% superior a la exigencia de mejora o informaciín bibliográfica. Los IS se calcularon como la relaciín entre el valor del indicador y el valor del umbral. El sistema será sostenible si el promedio de los índices de los indicadores es igual o mayor que uno, siendo uno el límite de sostenibilidad. En T0 con un IS de 0,58, ocho de los indicadores seleccionados no alcanzaron el límite, siendo particularmente inferiores la emisiín de metano y la cobertura de Chloris. En T1, con aplicaciín de tecnología de insumos y de proceso, todos los indicadores superaron el límite de sostenibilidad, siendo el IS = 1,48. Este modelo sería una alternativa viable para el desarrollo ganadero sostenible de la llanura deprimida salina de Tucumán, logrando acondicionar novillos desde el desmadre hasta faena en 10 a 12 meses.

Palabras-clave
sostenibilidad predial, indicadores ambientales, sistemas de producciín.

 
 en Evaluation of the sustainability of two cattle models in the depressed saline plain of Tucumán, Argentina
José Nasca , Manuela Toranzos y Natalia R. Banegas

Abstract

The sustainability of two physical cattle models of the depressed plain saline of Tucumán (area of probable cattle expansion) was evaluated in relation to environmental, economic, and social indicators. Work was done, during 3 years, with two physical models based in pasture ( Chloris gayana check for this species in other resources cv Finecut) of young fattening steers with similar stocking rate: T0 = traditional continuous-grazing (preponderant zonal situation), and T1 = controlled grazing system with strategic supplementation. Given the farm scale of the experience, priority environmental indicators were selected: 1) Environmental: cattle production, Chloris cover, weeds, litter, bare ground, soil organic matter, CH4 estimate, risk of use of fossil energy; 2) Economic: gross margin of the activity, and 3) Social: technical responsibility. The methodology was based on the determination of the sustainability index (SI). Local values were taken as thresholds, plus a 20% as demand of improvement or bibliographical information. The SI were calculated as the relation between the indicator value and the threshold value. The system will be sustainable if the average of the SI is equal or greater than one, being one the limit of sustainability. In T0 with a SI of 0.58, seven of the selected indicators did not reach the limit, being methane estimation and Chloris cover particularly lower. In T1, with application of input technology and process, all the indicators surpassed the sustainability limit, being SI of 1.55. This model would be a feasible alternative for a sustainable cattle development of the depressed plain saline of Tucumán, obtaining young steers from weaning to task in 10 to 12 months.

Keywords
farm sustainability, environmental indicators, production systems.

 
© Copyright 2006 - Zootecnia Tropical
Alternative site location: http://www.sian.inia.gob.ve/repositorio/revistas_ci/ZootecniaTropical/ztindice.htm

Home Faq Resources Email Bioline
© Bioline International, 1989 - 2024, Site last up-dated on 01-Sep-2022.
Site created and maintained by the Reference Center on Environmental Information, CRIA, Brazil
System hosted by the Google Cloud Platform, GCP, Brazil