Digital Commons Network^™

The Effect Of Inbreeding On Holstein-Friesian Breed, Mahdi Nazokkarmaher

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Cattle are domestic animals which have a special role of providing food for human consumption such as beef and milk. In addition, cattle are often chosen as animal models in biomedical and reproductive research. Holstein-Friesian cattle are known as the world's highest producing dairy breed. The Holstein-Friesian breed is differentiated from other dairy breeds based on its distinct characteristics such as high milk production, high calving survival, physiology, body size, and health. However, in the recent past, an increase in inbreeding has resulted in negative effects such as increased calving mortality, reduced milk production, diminished health quality, and decreased fertility. …

Selenate Uptake By Symphyotrichum Ascendens Western Aster, Nathan Hankes

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Symphyotrichum ascendens is a native forb species responsible for selenium poisoning of livestock grazing on mine wastes in the American Intermountain West. While S. ascendens has long been assumed to be a Se accumulator species, this report details the first investigation into its Se uptake, affinity, partitioning, and growth in response to selenate fertilization. The study was performed in a hydroponic growth environment at selenate concentrations of 0.1, 0.25, 0.5, and 1.0 mM selenate. Symphyotrichum ascendens absorbed selenate in percentage concentrations, with the highest tissue concentration of 3.6% Se. Symphyotrichum ascendens exhibited signs of stress, producing 69.2% less biomass at …

The Role Of A Beaver In Shaping Stream Channel Complexity And Thermal Heterogeneity In A Central Oregon Stream, Florence Consolati Machen

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

North American beaver (Castor canadensis) alter stream channel morphology, hydrologic processes, and instream temperature regimes, yet there are few data driven studies that investigate the effect of beaver on stream channel complexity and stream temperature regimes across multiple spatial and temporal scales. The use of beaver as a restoration tool is a method at the forefront of watershed restoration, however little is known about the implications of this restoration technique, particularly with regard to its ability to alter stream channel complexity and stream temperature. This thesis addresses two knowledge gaps with the following objectives: to quantify the role …

Comparison Of Take Off Kinematics During Loaded Countermovement Jumps In Division One Female Gymnasts And Soccer Athletes, Ryan Moreau

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Purpose: The purpose of this study was to compare takeoff kinematics of incrementally loaded countermovement jumps (CMJ) in water and land in female gymnasts and soccer athletes.

Methods: 24 Division I student athletes (12 gymnastics, 12 soccer) volunteered for this study. Subjects performed CMJ on land and water at a level of the xiphoid process without an arm swing. CMJs with loads of body weight (BW), 10% BW, 20% BW, and 30% BW were performed three times per trial at each load. 15 kinematic variables related to the lower extremity were examined.

Results: For environment, significant (p less than …