Index Catalog // ScholarsArchive@OSU

Urinary excretion of the mycotoxins lolitrem B and lysergic acid in cattle consuming perennial ryegrass straw over 56 days

Creator:: Neumann, Persia, Duringer, Jennifer M., and Craig, A. Morrie
Abstract:: Perennial ryegrass (Lolium perenne) hay is an important source of forage for a variety of livestock species, and is most common in cool, coastal climates such as the Pacific Northwest. An endophyte fungus called Neotyphodium lolii frequently colonizes this grass to promote insect resistance, drought tolerance, and growth enhancement without...
Resource Type:: Poster

Invasion of Brachypodium sylvaticum in prairie and forest habitats : differences in community structure between uninvaded and invaded systems in Bald Hill Park, Corvallis, Oregon

Creator:: Goodell, Whitney
Abstract:: Brachypodium sylvaticum (Huds.) Beauv. is an invasive grass that can be found in forest and prairie communities throughout the Willamette Valley, Oregon. It can out-compete native species of grasses and forbs and become dominant in a broad range of habitats. This study investigated if there were differences in vegetation structure...
Resource Type:: Honors College Thesis
Full Text:: decreasing forage quality for wildlife, displacing endangered plant and insect species, and inhibiting

Systematic review of residual toxicity studies of pesticides to bees and comparison to language on pesticide labels using data from residual toxicity studies and USEPA published values

Creator:: Swanson, Leah
Abstract:: BACKGROUND. Residues of pesticides on crops can result in mortality to foraging bees. The likelihood of mortality can be mitigated by applying pesticides in the evening so that their residues dissipate by the following morning when bees resume foraging. The dissipation rates of different pesticides, or their residual toxicity, is...
Resource Type:: Honors College Thesis
Full Text:: . encounter a Pollinating Insect Hazard Statement on pesticide labels, which coarsely indicate which

Using Cattle as a Tool : Restoring the Sumpter Valley Dredge Tailings

Creator:: Defrees, Dallas K.
Abstract:: A period of over forty years (1913-1954) of gold dredging dramatically changed the landscape of Sumpter Valley, Oregon into a rocky, uninhabitable terrain. The Defrees Ranch LLC used cattle feeding to increase top soil, vegetation, and habitat on the dredge tailings. This thesis investigated the use of feeding cattle as...
Resource Type:: Honors College Thesis
Full Text:: dredge waste sites. A belt line transect method was used to complete a usable forage test and a species

Physiological effects of forb and legume pastures on lactating dairy cows as indicated by blood parameters

Creator:: Marr, Kaylee M.
Abstract:: Use of secondary metabolites in legumes and herbs as forage for dairy cattle is tested through analysis of blood parameters including beta-hydroxybutyrate (BHBA), cholesterol, urea, creatinine, haptoglobin, bilirubin, thiol groups and advanced oxidation protein products (AOPP). The pasture treatments were grass-based (‘Perun’ festulolium (X Festulolium braunii), ‘Rustler’ tall fescue (Festuca...
Resource Type:: Honors College Thesis
Full Text:: secondary metabolites in legumes and herbs as forage for dairy cattle is tested through analysis of blood

Diet overlap by DNA metabarcoding of mule deer, elk, and cattle in ponderosa pine forest of eastern Oregon

Creator:: Faber, M. Kate
Abstract:: Millions of acres of rangeland in the western U.S. is shared habitat by elk (Cervus canadensis), mule deer (Odocoileus hemionus), and cattle (Bos taurus). Potential competition between these ungulates for the same forage species can be understood from their diet composition. I used DNA metabarcoding methods with trnL primers to...
Resource Type:: Honors College Thesis
Full Text:: forage species can be understood from their diet composition. I used DNA metabarcoding methods with

A Needs Assessment Survey of Small Farmers in Oregon's Mid-Willamette Valley

Creator:: Wever, Erin L.
Abstract:: OSU Extension provides important educational services to members of the agricultural community. Programming options can be guided by needs assessment surveys, which are used to determine gaps in knowledge and understanding for communities. The objective of this study was to develop and execute a survey to gather information on: 1)...
Resource Type:: Honors College Thesis
Full Text:: ”, “pollinators”, and “habitat for beneficial insects”. Self-identified research interests included “weeds

A Proposed Equine Business Model for the Training and Resale of Jumpers

Creator:: McCarthy, Liz
Abstract:: The goal of this project was to determine whether an equine business in which the sole income is from the short term retraining and resale of horses could be successful. Horses would hypothetically be kept for not less than six months and not longer than one year, and priced from...
Resource Type:: Honors College Thesis
Full Text:: performance horse, grain or concentrate can be added to the hay or forage ration. While up to 0.75% of the

Effects of selenium supplementation during different trimesters of pregnancy on non-specific humoral immunity of pregnant beef cows and persistence of antibodies in their newborn calves

Creator:: Thompson-Hernandez, Ian
Abstract:: Immunosuppression during the periparturient period leads to increased susceptibility to infectious diseases in beef cows. Newborn calves rely on passive transfer of antibodies from their mothers at birth for protection against diseases in the first two months of age. It is unknown if supranutritional Se supplementation of cows during pregnancy...
Resource Type:: Honors College Thesis
Full Text:: parturition when fed Se-biofortified alfalfa hay for 10 weeks ± 16 days antepartum. Researchers have

Pollen fidelity of Apis mellifera L. during pollination of Limnanthes alba Hartw. ex Benth. ssp. alba, Limnanthaceae

Creator:: Watkins, Ann J.
Abstract:: Limnanthes alba, commonly known as meadowfoam is a popular commercial crop because its seed oil is composed of long carbon chains that provide it with high oxidative stability and consequently make it a desirable ingredient in cosmetic products. As a commercial pollinator, the western honey bee, Apis mellifera, may be...
Resource Type:: Honors College Thesis
Full Text:: ; ornithophily, or bird pollination; chriopteriphily, or bat pollination; and entomophily, or insect

ScholarsArchive@OSU

Urinary excretion of the mycotoxins lolitrem B and lysergic acid in cattle consuming perennial ryegrass straw over 56 days

Invasion of Brachypodium sylvaticum in prairie and forest habitats : differences in community structure between uninvaded and invaded systems in Bald Hill Park, Corvallis, Oregon

Systematic review of residual toxicity studies of pesticides to bees and comparison to language on pesticide labels using data from residual toxicity studies and USEPA published values

Using Cattle as a Tool : Restoring the Sumpter Valley Dredge Tailings

Physiological effects of forb and legume pastures on lactating dairy cows as indicated by blood parameters

Diet overlap by DNA metabarcoding of mule deer, elk, and cattle in ponderosa pine forest of eastern Oregon

A Needs Assessment Survey of Small Farmers in Oregon's Mid-Willamette Valley

A Proposed Equine Business Model for the Training and Resale of Jumpers

Effects of selenium supplementation during different trimesters of pregnancy on non-specific humoral immunity of pregnant beef cows and persistence of antibodies in their newborn calves

Pollen fidelity of Apis mellifera L. during pollination of Limnanthes alba Hartw. ex Benth. ssp. alba, Limnanthaceae

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