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" Persistencia de LPAI y HPAI en Camada de Aves de Corral Reutilizada, Bajo los Efectos de Acidificantes de Camada y Temperaturas de Compostaje "
Figueroa, Alejandra
Gallardo, Rodrigo A
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Latin Dissertation
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| Language of Document
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English
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| Record Number
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1053538
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TL52655
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| Main Entry
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Figueroa, Alejandra
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| Title & Author
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Persistencia de LPAI y HPAI en Camada de Aves de Corral Reutilizada, Bajo los Efectos de Acidificantes de Camada y Temperaturas de Compostaje\ Figueroa, AlejandraGallardo, Rodrigo A
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| College
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University of California, Davis
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| Date
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2020
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| Degree
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M.S.
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2020
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| Note
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27 p.
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| Abstract
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Avian influenza has greatly impacted the commercial poultry industry. Limited knowledge exists on the interactions between avian influenza viruses (AIV) and the environmental factors associated with poultry farms. To improve existing understanding of AIV’s survival in various environmental conditions, experiments were conducted to investigate the persistence of AIV in reused poultry litter. Additionally, we investigated the effects of litter acidifiers as well as different composting temperatures in the survivability of this virus. Highly pathogenic avian influenza (HPAI) was found to persist much longer than low pathogenic avian influenza (LPAI) in litter material, regardless of the number of cycles the litter was used. No clear association was detected between litter cycle use and viral persistence. In terms of litter acidification, the acidifier amendment effectively inactivated LPAI both in broiler litter and without any litter present, while differing results were obtained in turkey litter. Finally, when testing composting temperatures, LPAI was inactivated after 30 minutes of viral contamination, even before the target temperatures were reached. At 50 °C and 60 °C, LPAI in carcass material with and without litter survived less than 30 minutes. Thus, poultry carcass material was observed to have a detrimental effect on LPAI survivability.
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Agriculture
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Animal sciences
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Virology
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| Added Entry
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Gallardo, Rodrigo A
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| Added Entry
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University of California, Davis
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