Preliminary investigation on the influence of air quality on the increase of piglet losses in the farrowing unit (CROSBI ID 529790)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Pavičić, Željko ; Balenović, Tomislav ; Popović, Maja ; Valpotić, Ivica ; Tofant, Alenka ; Valpotić, Hrvoje ; Ekert Kabalin, Anamaria
engleski
Preliminary investigation on the influence of air quality on the increase of piglet losses in the farrowing unit
The study investigated air quality in the farrowing unit with increased piglet losses (farrowing unit A) by comparasion of the obtained results of primary microclimatic values and total airborne microbe numbers to the results acquired from another farrowing unit (farrowing unit B) that operated in strictly controlled conditions with current technology and had optimal air quality. In each facility the investigation extended through two production cycles with full capacity of sows per turn. Farrowing unit A used outdated technology and was 270 m2 in size equipped with 40 pens, while farrowing unit B used current technology and was 370 m2 in size equipped with 60 farrowing pens. Seven air samplings were performed in every 28-day turn with the SAS 100TM (PBI International, Italy) air collector, and primary microclimatic conditiond were monitored with Testo and Drager (Germany) portable digital instruments. Air was sampled onto corresponding growth medium and the obtained results of microbe numbers were subject to statistical analysis. According to the acquired results a significantly larger number of individual microbe species was recorded in farrowing unit A in both production cycles in relation to farrowing unit B. Besides, inadequate exchange of air with increased ammonia concentration and relative humidity was observed in farrowing unit A. Outdated technology along with insufficient maintenance of ventilation equipment induces unsuitable microclimatic conditions and increased microbe numbers in the air of farrowing unit, which perhaps is in correlation with an increase in piglet losses. Unlike this, in farrowing units with current housing technology and optimal production results the total microbe numbers are expected to be below 10.000 CFU/m3 and 1.000 CFU/m3 of air for bacteria and fungi, respectively.
nursery; piglet losses; microbiological air quality; ammonium
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Podaci o prilogu
279-283-x.
2007.
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objavljeno
978-9949-426-29-4
Podaci o matičnoj publikaciji
XIII Intenational Congress in Animal Hygiene ISAH-2007
Aland, A.
Tartu: Estonian University of Life Sciences
Podaci o skupu
Animal health, animal welfare and biosecurity
poster
17.06.2007-21.06.2007
Tartu, Estonija