Criteria for assessing dairy farm types
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Abstract
In Galicia and in the rest of Spain, dairy barns are going through a transition to implement the latest technologies, improve labour efficiency, and increase size. Barns with capacity for more cows are required due to the new market demands. Such barns must be perfectly defined, so that the construction of new buildings may entail reduced investment and operating costs. A wrong decision in the design phase can lead to serious financial trouble, even to the extent of making the farm economically non-viable.
This study focuses in determining the factors that most strongly affect the construction costs of dairy housing, based on the most common barn designs in Galicia. Such factors are determined by implementing different indices that analyse the shape of the building.
The implemented indices concern the design of the building –mainly its shape– and consider in all cases the relation of the design to the total cost and cost per item of the different constructions. Among these indices, the ‘ratio of area to perimeter squared’ or shape index (dimensionless), and elongation (ratio between the length and the width of the building), enable the determination of the shapes that are more convenient from the economic perspective. The cost of the building envelope per square meter varies as the barn area increases. The relation between the variation in the cost of the building envelope and both indices is studied for the different design options considered.
With the data obtained, some guidelines are suggested in order to help project designers find the most appropriate result for their design work.Keywords:
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References
Álvarez C J (1994). Validación de modelos de diseño de distribución en planta asistido por ordenador, aplicados a alojamientos de vacuno lechero en Galicia. PhD Thesis. Universidad Politécnica de Madrid, Spain
Álvarez C J; Marco JL; González J A (1995). Ingeniería del Diseño: una aproximación a la distribución en planta. Publicaciones de la E. T. S. I. A. – U .P. M., Madrid, Spain
Balakrishnan J, Cheng C H (2000). Genetic search and the dynamic layout problem. Computers and Operations Research, (27), 587-593
Bewley J; Palmer R W; Jackson-Smith D B (2001) An overview of experiences of Wisconsin dairy farmers who modernized their operations. Journal of Dairy Science, 84, 717-729
Bowell V A; Rennie L J; Tierney G; Lawrence A B; Haskell M J (2003) Relationships between building design, management system and dairy cow welfare. Animal Welfare, 12(4), 547-552
Carreira X C (1997). Aloxamentos para gando vacún de leite. Xunta de Galicia, Santiago de Compostela, Spain Díaz F (1998). El sistema vivienda familiar-explotación agraria en Galicia. Factores de calidad de vida. PhD Thesis, University of Santiago de Compostela, Lugo, Spain
Fernández G (2003). Economía Rural y Agraria en Galicia 2003. FG Estudios Económicos y Sociales. Madrid, Spain
Fernández M E; Mariño R; Carreira X C (2006) Algorithms for Dairy Barn Design: Resting, Feeding, and Exercise. Dairy Science Journal, 89, 2784-2798
González XP; Álvarez C J; Crecente R (2004) Evaluation of land distributions with joint regard to plot size and shape. Agricultural Systems, 82(1), 31-43
Hives J K (1985). Cost implications of design options. Farm Buildings Engineering. 2(2), 10-14
Instituto Gallego de Estadística (2004). Encuesta de explotaciones de vacuno en Galicia. Xunta de Galicia, Santiago de Compostela, Spain Instituto Tecnológico de Galicia (1999). Base de datos Agroforestal de Galicia. I. T. G., Santiago de Compostela, Spain
Maseda F; Díaz F; Álvarez C J (2004). Family Dairy Farms in Galicia (N. W. Spain): Classification by Some Family and Farm Factors Relevant to Quality of Life. Biosystems Engineering. 87(4), 509-521
Palmer W.R. (1999). Modernization Options. Cooperative Extension for Iowa State University, U. of Illinois, U. of Minnesota, and U. of Wisconsin, USA
Pereira J M (2002). Tipologías de diseño en explotaciones de ganado vacuno lechero: Análisis de costes de inversión. PhD Thesis., University of Santiago de Compostela, Spain
Pereira J M; Álvarez C J; Barrasa M (2003). Prediction of Dairy Housing Construction Costs. Journal of Dairy Science. 86(11), 3536-3541
Pereira J M; Barrasa J M; Álvarez C J; Bueno J (2005) Prediction of dairy cattle housing cost with different cleaning systems. Transactions of the ASAE 48(1), 307-314
Pérez J; Santamarina M C; Vallés J J; Peña A; Valera A; Carreño A (2004) Optimal Layout Design for Milk Goats Livestock Farms Using Genetic Algorithms. Agricultural Engineering International: the CIGR Journal of Scientific Research and Development, BC 03 019 Vol.VI.
Trueba I; Cazorla A; Gracia J I (1995). Proyectos Empresariales: Formulación y Evaluación. Ediciones MundiPrensa, Madrid, Spain
Wu Y; Appleton E (2002) The optimisation of block layout and aisle structure by a genetic algorithm. Computers and Industrial Engineering, 41, 371-387
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