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Effects Of Slope Upon Hind Limb Kinematics In Chukar Partridge (Alectoris Chukar), Anna T. Kenney 2020 University of Montana

Effects Of Slope Upon Hind Limb Kinematics In Chukar Partridge (Alectoris Chukar), Anna T. Kenney

Undergraduate Theses and Professional Papers

Ground dwelling birds must scale all kinds of complex terrain in order to survive in their natural environments. For instance, Alectoris chukar live on steep hillsides with slopes of up to 60° or 172.3% slope. We undertook the present study to improve understanding of how birds successfully traverse such complex terrain. Using a high speed camera, we analyzed the hind limb kinematics of chukars during normal locomotion on a 10° and 35° incline, decline, and level slope. We compared the data collected from the video recordings, which we had used to identify and digitize the bony landmarks, between all ...


Messy Eating, Samantha King, R Scott Carey, Isabel Macquarie, Victoria Millious, Elaine Power 2019 Fordham University

Messy Eating, Samantha King, R Scott Carey, Isabel Macquarie, Victoria Millious, Elaine Power

Environmental Studies

Literature on the ethics and politics of food and that on animal-human relationships have infrequently converged. Representing an initial step towards bridging this divide, Messy Eating features interviews with thirteen prominent and emerging scholars about the connections between their academic work and their approach to consuming animals as food. The collection explores how authors working across a range of perspectives—postcolonial, Indigenous, Black, queer, trans, feminist, disability, poststructuralist, posthumanist, and multispecies—weave their theoretical and political orientations with daily, intimate, and visceral practices of food consumption, preparation, and ingestion.

Contributors: Neel Ahuja, Billy Ray Belcourt, Matthew Calarco, Lauren Corman, Naisargi ...


Ruminal Protection And Intestinal Availability Of Rumen-Protected Methionine And Lysine In Lactating Dairy Cows, Sara Menchu 2019 Utah State University

Ruminal Protection And Intestinal Availability Of Rumen-Protected Methionine And Lysine In Lactating Dairy Cows, Sara Menchu

All Graduate Theses and Dissertations

Rumen protected Methionine (MET) and Lysine (LYS) are critical for milk protein synthesis in dairy cows. N-acetyl-L-methionine (NALM) is a MET derivative that consists of L-Met protected with an acetyl group that is attached to the α-amino group.N-acetyl-L-lysine (NALL) is a LYS derivative that is similarly protected. The objectives of these studies were to quantify the gastrointestinal availability of NALM and NALL. Three experiments were run as 3 × 3 Latin square using 3 second lactation Holstein cows that have been fitted with cannulas in the rumen and duodenum. The cows were fed diets containing the supplements for two weeks ...


Dominance And Aggression Among Hummingbirds In The Cloud Forests Of The Talamanca Mountains, Costa Rica, Crystal Sauder, Aileen Scarim 2019 Olivet Nazarene University

Dominance And Aggression Among Hummingbirds In The Cloud Forests Of The Talamanca Mountains, Costa Rica, Crystal Sauder, Aileen Scarim

Scholar Week 2016 - present

Hummingbirds (Trochilidae) are known for being aggressive and territorial. By knowing hummingbirds are not very social, nor appear to enjoy having interactions with others, we wanted to observe how multiple species of Trochilidae interact with one another. The study was completed to observe if males of different Trochilidae would be more aggressive at hummingbird feeders over females. Three different feeder locations were decided on, spread across the Savegre Valley region near the Quetzal Education Research Center (QERC). Symbols were agreed upon in order to shorthand the exact series of events that were happening while we observed the feeders. Species and ...


Changes In Spring Arrival Times: Climate Change And The Phenology Of Spring Bird Migration, Aaron Svedlow 2019 University of Southern Maine

Changes In Spring Arrival Times: Climate Change And The Phenology Of Spring Bird Migration, Aaron Svedlow

Student Scholarship

Climate change and weather affect the phenology of bird migration; however, specific climatological factors associated with these observed effects have only recently been described. The relationship between local, regional, and global climate patterns and avian migration are increasingly important to understand due to the widespread, and potentially negative, implications (such as reduced fecundity) of rapid human induced climate change on bird populations. Migratory birds are under selective pressure to arrive at breeding areas at the optimal time to set up nesting territories and exploit seasonally abundant food resources, and because climate change has the potential to occur more rapidly than ...


Setting The Farm Animal Welfare Scene In North America, Anna K. Johnson 2019 Iowa State University

Setting The Farm Animal Welfare Scene In North America, Anna K. Johnson

Anna K. Butters-Johnson

The objectives of this paper are to (1) set the scene on what animal welfare is, the schools that one can subscribe and how this could influence the direction that farm animal welfare could go (2) provide an overview on some of the critical farm animal welfare events that have occurred over the past 10 years in North America and (3) to review the legislative events; past and future that will affect farm animal welfare. Animal welfare is not a term that arose in science to express a scientific concept; rather it arose in western civilization through society to express ...


Ecological Factors Influencing Plant Distribution In The Shadscale Zone Of Southeastern Utah, Kamal M. Ibrahim 2019 Utah State University

Ecological Factors Influencing Plant Distribution In The Shadscale Zone Of Southeastern Utah, Kamal M. Ibrahim

[STREAMING^TV] DIJON PSG MATCH EN DIRECT LIVE DU MARDI

The intimate relationship between vegetation and soil has long been a subject of interest. Ecologists, soil surveyors, and ranchers have recognized that vegetation differences are often accompanied by variation in soil types.


An Endemic Species In A Protected Area: Euscorpius Carpathicus (L., 1767) In The Cozia National Park, Romania (Scorpiones: Euscorpiidae), Severus-Daniel Covaciu-Marcov, Sára Ferenţi 2019 Marshall University

An Endemic Species In A Protected Area: Euscorpius Carpathicus (L., 1767) In The Cozia National Park, Romania (Scorpiones: Euscorpiidae), Severus-Daniel Covaciu-Marcov, Sára Ferenţi

Euscorpius

In 2016-2018, we identified 48 distribution records of Euscorpius carpathicus in the Cozia National Park, from the Romanian Southern Carpathians. The Carpathian scorpion was found between 300 and 847 m a.s.l., in forested regions, being more numerous in the lower areas situated along the Olt River. E. carpathicus is a native species in the region; it populates natural areas with low human impact.


Swine Finishing Room Air Infiltration: Part 2. Infiltration As Affected By Room Characteristics, Harishchandra T. Jadhav, Steven J. Hoff, Jay D. Harmon, Daniel S. Andersen 2019 Iowa State University

Swine Finishing Room Air Infiltration: Part 2. Infiltration As Affected By Room Characteristics, Harishchandra T. Jadhav, Steven J. Hoff, Jay D. Harmon, Daniel S. Andersen

Steven J. Hoff

Data collected on 17 swine finishing rooms from the Midwest region of the United States was used to study the relationship between infiltration rate and selected room characteristics. Effect of individual room characteristics on room infiltration rate were tested by simple linear regression (SLR) while multiple linear regression (MLR) was used to develop models for improved prediction. SLR results revealed that the total (It) and other (Io; non-curtain/fan locations) swine finishing room infiltration rates were inversely related to room width and directly related to room length and ceiling height. As expected, rooms with higher curtain end pocket overlap, curtain ...


Hvac Techniques For Modern Livestock And Poultry Production Systems, Steven J. Hoff 2019 Iowa State University

Hvac Techniques For Modern Livestock And Poultry Production Systems, Steven J. Hoff

Steven J. Hoff

Thermal modification for housed livestock and poultry production (HLPP) systems has evolved from outside raised or uncontrolled naturally ventilated building systems into sophisticated computer-controlled cloud-analyzed complexes in the quest for producing a safe, reliable, sustainable, and efficient protein supply for our ever-growing population. This chapter discusses a few of the various HLPP systems used in the USA and details the design process in quantifying the needs for our housed livestock and poultry. Specific emphasis is placed on general building characteristics, general ventilation design features, heat stress control, and systems designed to address animal welfare.


Functional Performance Evaluation Of A Novel Thermal Environment Sensor Array, Brett C. Ramirez, Y. Gao, Steven J. Hoff, Jay D. Harmon 2019 Iowa State University

Functional Performance Evaluation Of A Novel Thermal Environment Sensor Array, Brett C. Ramirez, Y. Gao, Steven J. Hoff, Jay D. Harmon

Steven J. Hoff

The thermal environment (TE) inside livestock and poultry facilities has a substantial impact on animal growth performance and facility energy usage; therefore, the TE must be quantified correctly to maintain the optimal TE that maximizes feed efficiency and consumes minimal resources. To achieve this goal, a TE sensor array (TESA) and accompanying data acquisition system were previously developed to measure dry-bulb temperature (tdb), black globe temperature, airspeed, and relative humidity (RH). While measurement of each parameter is useful individually, it is more informative when they are combined to estimate and assess the total impact that the TE has on an ...


Functional Performance Evaluation Of A Novel Thermal Environment Sensor Array, Brett C. Ramirez, Y. Gao, Steven J. Hoff, Jay D. Harmon 2019 Iowa State University

Functional Performance Evaluation Of A Novel Thermal Environment Sensor Array, Brett C. Ramirez, Y. Gao, Steven J. Hoff, Jay D. Harmon

Jay D. Harmon

The thermal environment (TE) inside livestock and poultry facilities has a substantial impact on animal growth performance and facility energy usage; therefore, the TE must be quantified correctly to maintain the optimal TE that maximizes feed efficiency and consumes minimal resources. To achieve this goal, a TE sensor array (TESA) and accompanying data acquisition system were previously developed to measure dry-bulb temperature (tdb), black globe temperature, airspeed, and relative humidity (RH). While measurement of each parameter is useful individually, it is more informative when they are combined to estimate and assess the total impact that the TE has on an ...


Swine Finishing Room Air Infiltration: Part 2. Infiltration As Affected By Room Characteristics, Harishchandra T. Jadhav, Steven J. Hoff, Jay D. Harmon, Daniel S. Andersen 2019 Iowa State University

Swine Finishing Room Air Infiltration: Part 2. Infiltration As Affected By Room Characteristics, Harishchandra T. Jadhav, Steven J. Hoff, Jay D. Harmon, Daniel S. Andersen

Jay D. Harmon

Data collected on 17 swine finishing rooms from the Midwest region of the United States was used to study the relationship between infiltration rate and selected room characteristics. Effect of individual room characteristics on room infiltration rate were tested by simple linear regression (SLR) while multiple linear regression (MLR) was used to develop models for improved prediction. SLR results revealed that the total (It) and other (Io; non-curtain/fan locations) swine finishing room infiltration rates were inversely related to room width and directly related to room length and ceiling height. As expected, rooms with higher curtain end pocket overlap, curtain ...


Employing Natural History Collections In The Aid Of Conservation: Streamlining An Approach To Model Species Distributions En Masse For The Preservation Of Biodiversity, Alice Fornari 2019 Selected Works

Employing Natural History Collections In The Aid Of Conservation: Streamlining An Approach To Model Species Distributions En Masse For The Preservation Of Biodiversity, Alice Fornari

Alice Fornari

Using species distribution models (SDMs) in Natural History Collections (NHCs) can influence how humans implement conservation changes in flora and fauna communities and ecosystems. Through the use of legacy data (old NHCs and their associated locality/collection information), data correction (background data or pseudo absences added to presence-only data), and the SDM software, Maxent (and its associated geographic information systems or GIS projected models), it has been shown that it is feasible to create a low budget protocol/setup to project the past, present and future of species population changes. This has been done in the past few decades as ...


Using Motion-Activated Trail Cameras To Study Diet And Productivity Of Cliff-Nesting Golden Eagles, Jordan T. Harrison, Michael N. Kochert, Benjamin P. Pauli, Julie A. Heath 2019 Boise State University

Using Motion-Activated Trail Cameras To Study Diet And Productivity Of Cliff-Nesting Golden Eagles, Jordan T. Harrison, Michael N. Kochert, Benjamin P. Pauli, Julie A. Heath

Julie A. Heath

Studies of cliff-nesting raptors can be challenging because direct observations of nest contents are difficult. Our goals were to develop a protocol for installing motion-activated trail cameras at Golden Eagle (Aquila chrysaetos) nests to record diet information and productivity, and to estimate prey detection probability using different diet study methods. In 2014 and 2015, we installed cameras at 12 Golden Eagle nests with 18–42-d-old nestlings. Following installation, we monitored adult behavior using direct observation and post-installation image review. At two nests, adult eagles did not return to nests or exhibited behaviors suggesting avoidance of the cameras, but returned to ...


Forage News [2019-03], University of Kentucky Department of Plant and Soil Sciences 2019 University of Kentucky

Using Motion-Activated Trail Cameras To Study Diet And Productivity Of Cliff-Nesting Golden Eagles, Jordan T. Harrison, Michael N. Kochert, Benjamin P. Pauli, Julie A. Heath 2019 Boise State University

Using Motion-Activated Trail Cameras To Study Diet And Productivity Of Cliff-Nesting Golden Eagles, Jordan T. Harrison, Michael N. Kochert, Benjamin P. Pauli, Julie A. Heath

Raptor Research Center Publications and Presentations

Studies of cliff-nesting raptors can be challenging because direct observations of nest contents are difficult. Our goals were to develop a protocol for installing motion-activated trail cameras at Golden Eagle (Aquila chrysaetos) nests to record diet information and productivity, and to estimate prey detection probability using different diet study methods. In 2014 and 2015, we installed cameras at 12 Golden Eagle nests with 18–42-d-old nestlings. Following installation, we monitored adult behavior using direct observation and post-installation image review. At two nests, adult eagles did not return to nests or exhibited behaviors suggesting avoidance of the cameras, but returned to ...


Estimating Relative Abundance Of Young-Of-The-Year American Eel, Anguilla Rostrata, In The Virginia Tributaries Of Chesapeake Bay, Spring 2018, Troy D. Tuckey, Mary C. Fabrizio 2019 Virginia Institute of Marine Science

Estimating Relative Abundance Of Young-Of-The-Year American Eel, Anguilla Rostrata, In The Virginia Tributaries Of Chesapeake Bay, Spring 2018, Troy D. Tuckey, Mary C. Fabrizio

Reports

American Eel (Anguilla rostrata) is a valuable commercial species along the Atlantic coast of North America from New Brunswick to Florida. In the U.S., harvests have declined, with similar patterns occurring in the Canadian Maritime Provinces (Meister and Flagg 1997). An average of 62% of the annual landings of U.S. commercial harvest since 1993 have come from the Chesapeake Bay (personal communication from the National Marine Fisheries Service, Fisheries Statistics Division, 9 February 2015). In 2013, Virginia commercial landings were approximately 100,298 lbs; since mandatory reporting began in 1993, average annual landings in Virginia have been 193 ...


Quantitative Heterodonty In Crocodylia: Assessing Size And Shape Across Modern And Extinct Taxa, Domenic D'Amore, Megan Harmon, Stephanie Drumheller, Jason Testin 2019 Daemen College

Quantitative Heterodonty In Crocodylia: Assessing Size And Shape Across Modern And Extinct Taxa, Domenic D'Amore, Megan Harmon, Stephanie Drumheller, Jason Testin

Faculty Articles

Heterodonty in Crocodylia and closely related taxa has not been defined quantitatively, as the teeth rarely have been measured. This has resulted in a range of qualitative descriptors, with little consensus on the condition of dental morphology in the clade. The purpose of this study is to present a method for the quantification of both size- and shape-heterodonty in members of Crocodylia. Data were collected from dry skeletal and fossil specimens of 34 crown crocodylians and one crocodyliform, resulting in 21 species total. Digital photographs were taken of each tooth and the skull, and the margins of both were converted ...


Identification Of Resource Extraction Technologies When The Resource Stock Is Unobservable, Quinn Weninger, Larry Perruso, Helle Bunzel 2019 Iowa State University

Identification Of Resource Extraction Technologies When The Resource Stock Is Unobservable, Quinn Weninger, Larry Perruso, Helle Bunzel

Economics Working Papers

This paper consistently estimates the structural properties of a fishery resource extraction technology. We overcome two ubiquitous features of fisheries data generating processes that invalidate classical estimators: unobservability by the researcher (but partial observability by fishermen) of the fish stock, and endogenous production decisions that vary with private information about stock abundance and economic variables. We adopt methods used in fisheries stock assessment to control for unobserved stock effects on productivity. A nonlinear instrumental variables estimator controls for endogenous choices of the output mix. The approach is applied to the US Gulf of Mexico commercial reef fish fishery. Comparison with ...


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