Mitigation of effects from heat stress by Artemisia species

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Mitigation of effects from heat stress by Artemisia species

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dc.contributor.advisor Lamberson, William R. en_US
dc.contributor.author Selby, Catherine Clare
dc.date.accessioned 2012-09-19T15:35:49Z
dc.date.available 2012-09-19T15:35:49Z
dc.date.issued 2012
dc.date.submitted 2012 Spring en_US
dc.identifier.other SelbyC-050412-T430
dc.identifier.uri http://hdl.handle.net/10355/15408
dc.description Title from PDF of title page (University of Missouri--Columbia, viewed on September 19, 2012). en_US
dc.description The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. en_US
dc.description Thesis advisor: Dr. William R. Lamberson en_US
dc.description Includes bibliographical references. en_US
dc.description M.S. University of Missouri--Columbia 2012. en_US
dc.description Dissertations, Academic -- University of Missouri--Columbia -- Animal sciences. en_US
dc.description "May 2012" en_US
dc.description.abstract Artemisia afra (AF) is a herb used by indigenous peoples of South Africa to alleviate heat stress during desert travel, and Artemisia absinthium (AB) is a related plant grown in the U. S. Two experiments were conducted to evaluate the effects of AF and/or AB on metabolic rate and activity in mice, and semen quality in boars. Male mice (n = 49) were housed in a neutral environment (21°C) and given ad libitum access to a 1% w/v decoction of AF, AB, or tap water (TW). Mice were then exposed to a heat stress environment (35°C) for 5 days. Metabolic rate was calculated based on O2 consumption, CO2 production and respiratory exchange ratio collected in individual indirect calorimeters. Metabolic rate was higher (P = 0.06) in AB overall. Both AB and AF had a higher (P = 0.001) tail temperature than TW during the heat stress period. No difference was seen in activity. Subsequently, six 8-mo old boars were assigned in a crossover design to be given a decoction of AB or TW before and during a 5-d period in a heat stress (32°C) chamber. Boars were collected for 5-wk following the initiation of heat stress. Boars given AB (1400 hr) had a lower ear temperature (P=0.02) than those given TW (1400 hr). Boars given TW (1400 hr) had a higher shoulder temperature (P=0.04) than TW (400 h). Liquid consumption of TW was higher than AB (P=0.003). Semen quality measurements showed a significant difference within a week following heat stress, but there was no difference between treatments. en_US
dc.format.extent ix, 90 pages en_US
dc.language.iso en_US en_US
dc.publisher University of Missouri--Columbia en_US
dc.rights Access is limited to the University of Missouri - Columbia. en_US
dc.subject heat stress en_US
dc.subject fertility en_US
dc.subject metabolic rate en_US
dc.subject Artemisia afra en_US
dc.subject Artemisia absinthium en_US
dc.title Mitigation of effects from heat stress by Artemisia species en_US
dc.type Thesis en_US
thesis.degree.discipline Animal sciences en_US
thesis.degree.grantor University of Missouri--Columbia en_US
thesis.degree.name M.S. en_US
thesis.degree.level Masters en_US
dc.relation.ispartofcommunity University of Missouri-Columbia. Graduate School. Theses and Dissertations. Theses. 2012 Theses
dc.relation.ispartofcollection 2012 MU restricted theses (MU)


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