Dissertation
Effect of thermal and ensilation treatments on viability of Taenia hydatigena eggs
Washington State University
Doctor of Philosophy (PhD), Washington State University
05/2010
DOI:
https://doi.org/10.7273/000006155
Abstract
In the Pacific Northwest USA feeding of potato co products has been speculated to result in greater prevalence of beef cysticercosis caused by Taenia saginata as compared to rest of the USA. A Taenia hydatigena model was used to assess the effect of heat and ensilation treatments on viabilities of eggs. The T. hydatigena life cycle was maintained under laboratory conditions by passing the parasite through a canine ovine cycle. For studying effect of heat, in vitro and in vivo experiments were carried out at temperatures ranging from room temperature (22 C) to 60 C for five minutes each. To study the effect of ensilation, in vivo study was conducted to analyze the effect of 0, 7, 14, 21 and 28 days of ensilation of minced potato on viability of T. hydatigena eggs. Effect of in vitro heat treatment was analyzed using sigmoidal four parameter model and resulted in 99.47% reduction in viability at 60.00 C. In vivo heat treatments caused linear decrease in viability at the rate of 0.32% per degree Celsius with 100% reduction occurring at 57.38 C. After ensilation, maximum reduction in viability of 0.10 3.72% was attained after 18.59 3.65 days of ensilation. Similar heat and ensilation treatments or a combination of the two may also be effective against T. saginata and may help to reduce occurrence of beef cysticercosis.
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Details
- Title
- Effect of thermal and ensilation treatments on viability of Taenia hydatigena eggs
- Creators
- Birpal Singh Buttar
- Contributors
- Jan Roger Busboom (Co-Chair)Mark Loge Nelson (Co-Chair) - Washington State University, Department of Animal SciencesDouglas Philip Jasmer (Committee Member) - Washington State University, Department of Veterinary Microbiology and PathologyDale Dawson Hancock (Committee Member) - Washington State University, Department of Veterinary Clinical SciencesDoug Walsh (Committee Member) - Washington State University, Department of Entomology
- Awarding Institution
- Washington State University
- Academic Unit
- Department of Animal Sciences
- Theses and Dissertations
- Doctor of Philosophy (PhD), Washington State University
- Publisher
- Washington State University
- Number of pages
- 95
- Identifiers
- 99901055120601842
- Language
- English
- Resource Type
- Dissertation