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Seasonal effects of volatile oils in ashe and redberry juniper on preference and digestibility by goats
| dc.creator | Riddle, Richard R. | |
| dc.date.accessioned | 2012-06-07T22:38:11Z | |
| dc.date.available | 2012-06-07T22:38:11Z | |
| dc.date.created | 1994 | |
| dc.date.issued | 1994 | |
| dc.identifier.uri | https://hdl.handle.net/1969.1/ETD-TAMU-1994-THESIS-R5437 | |
| dc.description | Due to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to digital@library.tamu.edu, referencing the URI of the item. | en |
| dc.description | Includes bibliographical references. | en |
| dc.description.abstract | This study was designed to evaluate the seasonal effects on Preference for 2 species and sexes of juniper, the effects Of volatile oils on Preference, and the metabolism and digestibility of alfalfa (Medicago saliva L.), Coastal bermudagrass, hay (qnodon dactylon (L.) Pers.), ashe juniper (Juniperus ashei Buchholz) and live Oak [Quercus virginiana (Small) Sarg. var. fusiformis] during the spring and fall. Angora and Spanish goats were exposed to ashe female, ashe male, redberry female and redberry male branches in a cafeteria style feeding trial. Preference was highly significant and consistent across all seasons except winter for goat type (P<.Ol),species(P<.Ol),orsex(P<.Ol). Spanish goats always consumed juniper more readily than Angoras and both preferred ashe over redberry juniper (Juniperus pinchotii Sudw.) and female over male plants. Mean concentrations of volatile oils varied significantly between species and across seasons. Concentrations of total oils were greater in the spring and summer than in the fall and winter. Concentrations of sabinine/,8-pinene were greater in redberry than ashe for all seasons. Concentrations of myrcene were also significantly greater for redberry during the spring and summer. Correlation was used to relate to oil concentration with preference. Similar positive and negative correlations existed for Angora and Spanish goats, indicating no differences in sensitivity to oils. Stepwise regression was used to identify individual oils which affected consumption. Sabinene/0-pinene had the greatest effect on grams consumed. Diet by season interactions were highly significant for most variables measured in the metabolism trials. Crude protein, digestible energy, and metabolizable energy for ashe juniper and live oak were low when compared to alfalfa and Coastal bermudagrass hay. This indicates that goats may need to be supplemented when these two plant species represent a major portion of their diet. | en |
| dc.format.medium | electronic | en |
| dc.format.mimetype | application/pdf | |
| dc.language.iso | en_US | |
| dc.publisher | Texas A&M University | |
| dc.rights | This thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries in 2008. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use. | en |
| dc.subject | range science. | en |
| dc.subject | Major range science. | en |
| dc.title | Seasonal effects of volatile oils in ashe and redberry juniper on preference and digestibility by goats | en |
| dc.type | Thesis | en |
| thesis.degree.discipline | range science | en |
| thesis.degree.name | M.S. | en |
| thesis.degree.level | Masters | en |
| dc.type.genre | thesis | en |
| dc.type.material | text | en |
| dc.format.digitalOrigin | reformatted digital | en |
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