Equations. International Commission of Agricultural Engineering, VII. Manuscript BC 05 001. PN-82/B-02402. Ogrzewnictwo − Temperatury obliczeniowe zewnętrzne. PN-EN ISO 12831:2006. Instalacje ogrzewcze w budynkach – Metoda obliczania projektowego obcią-żenia cieplnego. Siarkowski, Z., Głuski, T. (2000). Obliczeniowe temperatury zewnętrzne i ich wpływ na bilans cieplny budynku inwentarskiego. Inżynieria Rolnicza, 8 (19), 243-248. Siarkowski, Z., Głuski, T. (2004). Software for helping the designing of livestockbuildings. Part 1. Program fundamentals. Proceeding of the
Research has shown that microclimate is determined not only by air microparticles, but also by the degree of air ionization. Ions affect the body through the respiratory tract and skin. Exposure of reared chickens to elevated air temperature (37°C–23°C) was found to accelerate the break-down of negative ions compared to temperature lower by 10°C. Negative air ionization offsets the adverse effect of elevated temperature on chickens. Higher (85%) air humidity during rearing of chickens was also observed to destroy negative ions. Research findings indicate that air ionization is an environmental element that contributes to improving performance in broiler chickens. Many studies have also confirmed a positive effect of air ionization on the body weight and health of piglets.
RW, Short JL, White RP, Pedersen S, Tatai H, Johnsen JO, Metz JHH, Groot Koerkamp PWG, Uenk GH, Wathes CM. Concentrations and emissions of airborne endotoxins and microorganisms in livestockbuildings in Northern Europe. J Agric Engin Res 1998;70:97-107. Pirie RS, Dixon PM, McGorum BC. Endotoxin contamination contributes to the pulmonary inflammatory and functional response to Aspergillus fumigatus extract inhalation in heaves horses. Clin Exp Allergy 2003;33:1289-96.
The paper presents main provisions of methodology of manure utilization systems evaluation. All costs, starting with the costs related to manure cleaning in premises to the costs of increasing the biological yield obtained from its use, including the soil fertility value changes, were considered. The target function is offered a minimum of complex costs of entering the required amount of nutrients and organic matter per unit area for the planned yield. The effective technical solutions of calculations based on the proposed method include: construction of a boom conveyor with a hydraulic drive and described performance, scraper and screw types of conveyors, automatic scraper loading installation of manure from livestock buildings. The proposed solutions will reduce losses of nutrients by 50-70%, and will allow production of 20 million tons of grain annually.
The objective of this study was to assess the physicochemical properties of breast and thigh muscles and fatty acid composition of abdominal fat of geese reared at a distance of 50 metres from the wind turbine compared to those reared 460 metres from the wind turbine. The study was carried out on 40 Kołuda White® geese (Anser anser f. domestica) divided into two groups: Treatment 1 - reared at a distance of 50 metres and Treatment 2 - reared at a distance of 460 metres from the wind turbine (Vestas V90 wind turbine). The muscles were analysed for pH, thermal loss, shear force, TBARS values and colour parameters (L* a* b*). The fatty acids composition of abdominal fat was also analysed. The results of the present study suggest that noise generated by the wind turbine affected the quality of muscles and the fatty acid profile of abdominal fat of geese. The results showed that the muscles of geese reared at a distance of 50 metres from the wind turbine were characterized by higher pH and TBARS values compared to those reared at a longer distance from the wind turbine. The significantly lower content of C 18:3 n-3 fatty acid in abdominal fat was observed for geese reared 50 metres from the wind turbine. Further studies should be undertaken to establish the safe distance of a wind turbine from livestock buildings
The aim of the study was to assess the quality of shallow groundwater on the site pens and runoff from livestock manure heaps, in three selected farms involved in animal production and vegetable crops in the area of Plateau Proszowice. The analysis mainly included water from farm wells and effluents from manure. Additionally, water from drainage ditch running nearby farms was collected, before inflow of effluent (i.e. ditch water without manure effluent) and below inflow of effluent from heap of manure (i.e. ditch water containing manure effluent). Samples of the research material were collected from April 2012 to March 2014 at monthly intervals and analysed for the content of NO3-N, NH4-N, PO4-P, K, Na and Cl. Based on the obtained results it was found that water from the farm wells near the livestock buildings and from manure storage sites, was heavily polluted by the majority of these contaminants. The highest concentration of these pollutants, except for the NO3-N, was found in manure effluent – it exceeded a few dozen to a few hundred to any standards for water quality. There was also a significant deterioration in the quality of drainage ditch water because of the penetration of contaminants into ditch water from heaps of improperly stored manure. The water of the farm wells was characterized by excessive concentrations of NO3-N which disqualified it for drinking purposes.
The selected techniques were reviewed and their technological aspects were characterized in the context of multi-phase flow for biogas production. The conditions of anaerobic fermentation for pig slurry in a mono-substrate reactor with skeleton bed were analysed. The required technical and technological criteria for producing raw biogas were indicated.
Design and construction of the mono-substrate model, biogas flow reactor, developed for cooperation with livestock buildings of various sizes and power from 2.5 kW to 40 kW. The installation has the form of a sealed fermentation tank filled with a skeletal deposit constituting a peculiar spatial system with regular shapes and a rough surface.
Incorporating a plant in such a production cycle that enables the entire slurry stream to be directed from the cowshed or pig house underrun channels to the reactor operating in the flow mode, where anaerobic digestion will take place, allows to obtain a biogas.
The paper presents preliminary results of experimental investigations in the field of hydrodynamic substrate mixing system for biogas flow assessment by the adhesive bed in the context of biogas production. The aim of the study was to assessment and shows the influence of the Reynolds number on the biogas resistance factor for the fermentation process in mono-substrate reactor with adhesive deposit. The measurement results indicate a clear effect of the Reynolds number in relation to the descending flow resistance coefficient for the adhesive bed.
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.R., Sneath R.W., Short J.L., White R.P., Hartung J., Seedorf J., Schroder M., Link -ert K.H., Pedersen S., Takai H., Johnsen J.O., Wathes C.M. (1998). Concentrations and emissions of ammonia in livestockbuildings in northern Europe. J. Agric. Engng. Res., 70: 79-95. Harper L.A., Flesch T.K., Powell J.M., Coblentz W.K., Jokela W.E., Martin N.P. (2009). Ammonia emissions from dairy production in Wisconsin. J. Dairy Sci., 92: 2326-2337. Herbut P., Angrecka S., Nawalany G. (2012). The impact of barriers inside herringbone milking parlour on efficiency of the ventilation
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