Investigating the Impact of Manure Removal Frequency on the Amount of Produced Pollutants in Cattle Housing

Abstract

The aim of the experiment was to determine the concentrations of harmful gases production in the dairy housing and to compare the difference of measured data in terms of frequency of manure removal. Measuring the concentration of ammonia, methane and carbon dioxide was carried out in summer in three-day cycles when produced excrements were removed every day at 19:00 o'clock, and in three-day cycles when removing of excreta was carried out twice a day, in the morning and evening at 5:00 and 19:00 o'clock. Microclimatic conditions during the experiment were at a comparable level, ambient temperature was maintained at about 29 °C and relative humidity was 64 %. By comparing the obtained values of production in terms of frequency of waste removal, it has been shown that for removing twice a day, the production of ammonia, carbon dioxide, methane was higher than under manure removal only once a day. Keywords: ammonia, dairy housing, manure removal Abstrakt Cieľom experimentu bolo zistiť produkciu koncentrácií škodlivých plynov v objekte pre ustajnenie dojníc a porovnať rozdiel nameraných údajov z hľadiska frekvencie odstraňovania hnoja. Meranie koncentrácie amoniaku, metánu a oxidu uhličitého prebiehalo v letnom období v trojdenných cykloch, kedy vyprodukované exkrementy boli odstraňované raz za deň o 19:00 hodine a v trojdenných cykloch, kedy odstraňovanie exkrementov bolo vykonávané dvakrát za deň, ráno o 5:00 a večer o 19:00 hodine. Mikroklimatické podmienky vzduchu počas trvania experimentu boli 1262Journal of Central European Agriculture, 2013, 14(4), p.1262-1269 DOI: 10.5513/JCEA01/14.4.1340 1279 Journal of Central European Agriculture, 2013, 14(4), p.1279-1286 DOI: 10.5513/JCEA01/14.4.1340 na zrovnateľnej úrovni, teplota prostredia sa udržovala na cca 29°C a relatívna vlhkosť vzduchu 64%. Porovnaním získaných hodnôt produkcie z hľadiska frekvencie odstraňovania exkrementov bolo preukázané, že pri počte odstraňovania 2x za deň bola produkcia amoniaku, oxidu uhličitého aj metánu vyššia, ako to bolo pri vyhŕňaní len raz denne.

Testing of property changes in recycled bedding for dairy cows

“…Bedding from the brisket barrier place (as a "dry" material in Table 1) and from the rear curb (as a "wet" material in Table 1) were tested in the laboratory from the perspective of more precise examination. The thermal conductivity was tested according to STN EN 12667:2001 by means of guarded thermal plates on the Poensgen apparatus (VVÚM, Trenčín, Slovak Republic) and the density of the bedding was determined according to STN EN 1602:2013. Thermal resistance was calculated according to STN EN 730540:2013.…”

“…By utilizing of new technologies in bedding or in ventilation, improvement of living conditions and animal welfare can be achieved as well as reduction of pollutant concentration and reduction of their subsequent discharge into the atmosphere (Karandušovská et al 2013). During the reconstruction of buildings for dairy cattle, it is suitable to opt for an automatic system to clean out dirty bedding, allowing higher cleaning frequency.…”

Effect of Climatic Conditions on Differences in Thermo-Technical Properties of Organic Bedding in Laboratory Testing

“…Each cleaning, levelling, removing and re-bedding of litter has a significant impact on the production of harmful gases and its optimization is important both for animals and for the environment (Karandušovská et al, 2013;Karandušovská et al, 2015). Recycled manure solids are almost exclusively used in cubicles, both on mattresses and as deep beds.…”