dc.contributor.advisor | Lamberson, William R. | eng |
dc.contributor.author | Selby, Catherine Clare | eng |
dc.date.issued | 2012 | eng |
dc.date.submitted | 2012 Spring | eng |
dc.description | Title from PDF of title page (University of Missouri--Columbia, viewed on September 19, 2012). | eng |
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. | eng |
dc.description | Thesis advisor: Dr. William R. Lamberson | eng |
dc.description | Includes bibliographical references. | eng |
dc.description | M.S. University of Missouri--Columbia 2012. | eng |
dc.description | "May 2012" | eng |
dc.description.abstract | [ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] 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[degrees]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[degrees]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[degrees]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. | eng |
dc.format.extent | ix, 90 pages | eng |
dc.identifier.uri | http://hdl.handle.net/10355/15408 | |
dc.language | English | eng |
dc.publisher | University of Missouri--Columbia | eng |
dc.relation.ispartofcommunity | University of Missouri--Columbia. Graduate School. Theses and Dissertations | eng |
dc.rights | Access to files is limited to the University of Missouri--Columbia. | eng |
dc.subject | heat stress | eng |
dc.subject | fertility | eng |
dc.subject | metabolic rate | eng |
dc.subject | Artemisia afra | eng |
dc.subject | Artemisia absinthium | eng |
dc.title | Mitigation of effects from heat stress by Artemisia species | eng |
dc.type | Thesis | eng |
thesis.degree.discipline | Animal sciences (MU) | eng |
thesis.degree.grantor | University of Missouri--Columbia | eng |
thesis.degree.level | Masters | eng |
thesis.degree.name | M.S. | eng |