Investigating the impact of the costs for the floor profile on the technological flexibility of six-row buildings for free-box breeding of dairy cows

Vanya Dimova, Dimitar Georgiev

Abstract: 28 technical-technological schemes of semi-open six-row buildings common in practice for free-box rearing of milk cows, whose widths vary from 27.70 to 43.40 m, were studied. The options are grouped according to the internal layout of the buildings and a preferred range of widths with maximum technological flexibility is determined. For each variant, the costs of the technological profile of the floor (including stationary equipment) were calculated, and the construction costs of the zero cycle, supporting and enclosing structures of the building were not included. An assessment of the material intensity of the floor profile was carried out according to the construction parameters: consumption of concrete and consumption of steel (reinforcing - for the reinforced concrete floor and profile - for the technological equipment), applied to 1 m2 of built-up area and to one stock place. According to a methodology developed by us for the qualitative assessment of technological flexibility, taking into account the influence of the mentioned costs in four-row buildings for cows, it was established that with the presence of six rows of boxes, buildings with widths in the ranges of 32.30-34.40 m and 35.20-36.50 m have the greatest technological flexibility. The buildings with widths in the ranges of 31.70-32.30 m and 34.60-35.20 m with equal flexibility also have very good indicators. According to the developed methodology, widths with the same technological flexibility differ when evaluating the influence of costs for the floor profile - to a greater extent in the larger ranges of widths and with less flexibility. According to the costs of concrete and steel for 1 m2 built-up floor area, the differences are from 0.2 to 3.9%, and according to those for one stock place - from 5.1 to 19.3%.

Keywords: cows; evaluation; floor profile costs; six-row buildings; technological flexibility

Citation: Dimova, V. & Georgiev, D. (2024). Investigating the impact of the costs for the floor profile on the technological flexibility of six-row buildings for free-box breeding of dairy cows. Bulg. J. Agric. Sci., 30(6), 1141–1158

Date published: 2024-12-16