Floor temperature as a risk factor for the quality of the environment in the chickens
Laen...
Kuupäev
2019
Kättesaadavus
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
The aim of the work is to analyze the environmental risk factors in chicken breeding
in relation to the heat load of animals in summer. The research was carried out at a breeding hall
with a capacity of 20,000 ROSS 308 broiler chickens for two summer period, with a breeding
time of 39 days each. The indoor air temperature and relative humidity were continuously
measured at two locations at a height of 0.8 m above the floor, using PT 100 temperature sensors
and RS 800 humidity sensors. Data were recorded via a PLC unit at 10-minute intervals. The
surface temperatures of the floors were measured by DS 80 sensors connected to dataloggers in
two locations. It was observed that the floor temperature had an increasing tendency – due to
heating, heat produced by animals and anaerobic biological processes – even during the second
half of the breeding period. During the period from day 26 to day 39, the surface temperature of
the concrete floor, as well as the temperature of the straw bedding rise to above 30 °C. The indoor
air temperature in the hall was predominantly decreasing from the 26th day with rising floor
temperature tendency. Between the day 26 and day 39 of the breeding period, the average litter
temperature elevation over the air temperature exceeded 7 °C. Regression analysis showed
negative dependence of floor temperatures on air temperature; for a 1 K unit air temperature
reduction, an average floor temperature increase of 0.75 and 1.16 K was found, respectively.
Kirjeldus
Article
Märksõnad
floor construction, microclimatic parameters, summer period, heat load of chickens, articles