Diagnosis of air quality in broilers production facilities in hot climates
Laen...
Kuupäev
2018
Kättesaadav alates
Autorid
Sousa, F.C.
TinĂ´co, I.F.F.
Barbari, M.
Baptista, F.
Souza, C.F.
Saraz, A. O.
Coelho, D.J.R.
Silva, A.L.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
The objective of this study was to evaluate air quality of industrial farms of broilers
production, located at Zona da Mata region, Minas Gerais
, Brazil. The environmental air quality
was evaluated during the last rearing week, between 35 and 42 days of life of broilers. Facilities
with beds constituted by two types of substrates were evaluated: coffee husks (6 reuse cycles)
and shavings (4 reuse
cycles). A total of 30 facilities (3 per each of the 10 reuse cycles) were
investigated. Air quality was diagnosed by determining air temperature and relative humidity and
by ammonia and carbon dioxide concentrations. Air temperature and relative humidity
were not
affected by reuse cycles in coffee husks bed, but these variables were affected by reuse cycles in
shavings bed. Ammonia and carbon dioxide concentrations increased linearly according to the
reuse cycles for both types of bed. The maximum concentr
ations of ammonia and carbon dioxide
were 25
ppm and 1,348
ppm in facilities with bedding of coffee husks and 10
ppm and 1,075
ppm
in facilities with bedding of shavings, respectively. Air quality of facilities using coffee husk bed
tends to be worse when
compared to facilities using shavings bed due to the higher values of
ammonia and carbon dioxide concentrations, as observed in this study. In conclusion, regardless
bedding type, increases in reuse cycles tend to decrease air quality inside the facility,
since a
linear increasing in ammonia and carbon dioxide concentrations can be observed in relation to
the number of bed reuse cycles.
Kirjeldus
Article
Märksõnad
air pollutants, air quality, gas concentration, livestock, poultry, articles