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Gut Microbiota Of Migratory Passerines At Stopover, William Bagley Lewis 2015 University of Southern Mississippi

Gut Microbiota Of Migratory Passerines At Stopover, William Bagley Lewis

Master's Theses

Although the gut microbiota provides many beneficial functions to animal hosts, relatively little is known about the gut microbiota of passerines. It is likely that gut microbes are especially important during the migratory phase; however gut atrophy experienced during prolonged migratory flight may cause disruptions of the stable microbiota. Fecal samples were collected from several species of passerine after crossing the Gulf of Mexico during spring migration and before crossing during fall, and microbiota communities were analyzed using next-generation sequencing. Despite showing large inter-individual variation, a core microbiota composed largely of Firmicutes and Proteobacteria was identified in all birds. Microbiota ...


New Techniques To Modify Pork Fats Promote Better Health, Helen H. Jensen, Donald C. Beitz 2015 Iowa State University

New Techniques To Modify Pork Fats Promote Better Health, Helen H. Jensen, Donald C. Beitz

Iowa Ag Review

Mounting scientific evidence establishing the link between adverse health consequences and the consumption of fat and fat rich in saw rated fatty acids (saturated fat) has prompted leading health organizations to recommend decreasing the consumption of total and sam rated faL


Risk Assessment For Food Safety: Application And Evaluation Of Haccp In Hog Slaughter And Processing, Helen H. Jensen, George W. Beran, Terry Proescholdt, Laurian Unnevehr, James S. Dickson, Patricia Batres-Marquez 2015 Iowa State University

Risk Assessment For Food Safety: Application And Evaluation Of Haccp In Hog Slaughter And Processing, Helen H. Jensen, George W. Beran, Terry Proescholdt, Laurian Unnevehr, James S. Dickson, Patricia Batres-Marquez

Iowa Ag Review

New federal regulations focus control at the processing plant level. The project described in this article is designed to evaluate the microbial reductions and costs associated with the use of a Hazard Analysis and Critical Control Point (HACCP) system in large pork slaughter and processing plants. The objectives are to measure the efficiency of HACCP systems in achieving lower microbial counts in pork processing, to measure the marginal costs associated with different levels of pathogen reduction in pork processing and to determine implications for mandated HACCP adoption on industry costs. The study considers specific control points or technologies that are ...


Phytogenic Feed Additives As An Alternative To Antibiotic Growth Promoters In Broiler Chickens, G. R. Murugesan, Basharat Syed, Sudipto Haldar, Chasity Pender 2015 Iowa State University

Phytogenic Feed Additives As An Alternative To Antibiotic Growth Promoters In Broiler Chickens, G. R. Murugesan, Basharat Syed, Sudipto Haldar, Chasity Pender

G. R. Murugesan

The recent trend toward reduction of antibiotic growth promoters (AGP) in North American poultry diets has put tremendous pressure on the industry to look for viable alternatives. In this context, phytogenic feed additives (PFA) are researched to improve gut health and thereby performance. An experiment was conducted with the objective to evaluate the effects of PFA as an alternative to AGP on small intestinal histomorphology, cecal microbiota composition, nutrient digestibility, and growth performance in broiler chickens. A total of 432, day-old Vencobb 400 broiler chicks were randomly assigned to one of three dietary groups, each consisting of 12 replicate pens ...


An Analysis Of The Interaction Of Methylphenidate And Nicotine In Adolescent Rats: Effects On Bdnf, Elizabeth D. Freeman 2015 East Tennessee State University

An Analysis Of The Interaction Of Methylphenidate And Nicotine In Adolescent Rats: Effects On Bdnf, Elizabeth D. Freeman

Electronic Theses and Dissertations

This investigation was an analysis of the interaction of adolescent exposure to methylphenidate (MPH; trade name: Ritalin) on nicotine sensitization and conditioned place preference (CPP) in a rodent model and underlying mechanisms of this effect. Animals were treated IP with 1 mg/kg MPH or saline using a ―school day‖ regimen of five days on, two days off, from postnatal day (P) 28-50. During the final two weeks of MPH treatment, animals were either behaviorally sensitized to nicotine (0.5 mg/kg free base) or saline for 10 days, or conditioned to nicotine or saline using the CPP behavioral paradigm ...


Beef Cattle Management Systems For Estrus Synchronization And Heifer Development, Hazy Rae Nielson 2015 University of Nebraska-Lincoln

Beef Cattle Management Systems For Estrus Synchronization And Heifer Development, Hazy Rae Nielson

Theses and Dissertations in Animal Science

Four experiments were conducted to evaluate estrus synchronization and heifer development systems. In the first experiment delaying AI 19 h following GnRH administration in a hybrid estrus detection and time AI protocol was evaluated. Final pregnancy rate was not different among heifers detected in estrus, AI at the time GnRH administration, or delayed AI. The second study compared the effect of melengestrol acetate (MGA) -PG and 14-d controlled internal drug release (CIDR) -PG estrus synchronization protocols on estrus response and pregnancy rates of 311 d old heifers. Final pregnancy rate was similar between CIDR and MGA treatment groups. The objective ...


Dietary Strategies For Mitigation Of Methane Production By Growing And Finishing Cattle, Anna C. Pesta 2015 University of Nebraska-Lincoln

Dietary Strategies For Mitigation Of Methane Production By Growing And Finishing Cattle, Anna C. Pesta

Theses and Dissertations in Animal Science

Interest in reducing methane (CH4) emissions by cattle has increased recently. Loss of feed energy as CH4 represents both an environmental concern and an energetic loss to the animal. Manipulation of dietary composition has proven to be an effective mitigation strategy. Experiments were conducted to evaluate the effect of several dietary characteristics on CH4 production in growing and finishing cattle, and to develop a novel, non-invasive method for quantifying emissions from animals in a production setting. Short-term gaseous emissions of CH4 and carbon dioxide (CO2) were measured and the CH4:CO2 was used ...


Establishing A National Shellfish Sanitation Program In The Gambia, West Africa, Michael A. Rice, Foday Conteh, Karen Kent, Brian Crawford, Banja Bamba, Fatou Janha, Ismaila Bojang 2015 University of Rhode Island

Establishing A National Shellfish Sanitation Program In The Gambia, West Africa, Michael A. Rice, Foday Conteh, Karen Kent, Brian Crawford, Banja Bamba, Fatou Janha, Ismaila Bojang

Michael A Rice

A successful national program to assure sanitary quality of molluscan shellfish requires a multi-disciplinary and multi-agency governmental training, data collection, policy development and management effort in collaboration with members of the shellfish industry. The Tanbi Wetlands and other estuaries of Gambia support shellfisheries for oysters, Crassostrea tulipa, and the senile ark, Senelia senilis, conducted by the TRY Oyster Women’s Association. With low shellfish prices and a small local market, a Gambian National Shellfish Sanitation Program (GNSSP) was begun as a means to boost consumer confidence and allow market access to Gambia’s robust seasonal international tourism trade. Gambian officials ...


Physiological And Behavioural Responses To Noxious Stimuli In The Atlantic Cod (Gadus Morhua), Jared R. Eckroth, Øyvind Aas-Hansen, Lynne U. Sneddon, Helena Bichão, Kjell B. Døving 2015 University of Oslo

Physiological And Behavioural Responses To Noxious Stimuli In The Atlantic Cod (Gadus Morhua), Jared R. Eckroth, Øyvind Aas-Hansen, Lynne U. Sneddon, Helena Bichão, Kjell B. Døving

Animal Sentience, Intelligence, and Behavior

In the present study, our aim was to compare physiological and behavioural responses to different noxious stimuli to those of a standardized innocuous stimulus, to possibly identify aversive responses indicative of injury detection in a commercially important marine teleost fish, the Atlantic cod. Individual fish were administered with a noxious stimulus to the lip under short-term general anaesthesia (MS-222). The noxious treatments included injection of 0.1% or 2% acetic acid, 0.005% or 0.1% capsaicin, or piercing the lip with a commercial fishing hook. Counts of opercular beat rate (OBR) at 10, 30, 60, 90 and 120 min ...


Cranberry Lake Biological Station Research Symposium, Session C, SUNY College of Environmental Science and Forestry 2015 SUNY College of Environmental Science and Forestry

Cranberry Lake Biological Station Research Symposium, Session C, Suny College Of Environmental Science And Forestry

Cranberry Lake Biological Station

Ecological Monitoring and Biodiversity Assessment (EFB202) is the one of the keystone courses in the Environmental and Forest Biology curriculum. Students enrolled in this immersive course live at the Cranberry Lake Biological Station for three weeks. During the first two weeks of the course, students study a wide variety of taxonomic groups of organisms, and are introduced to a broad range of field, laboratory and analytical methods. Students then complete a group research project during the third and final week of the course. The research projects require proficiency in field sampling methods, basic experimental design and statistical analysis, and the ...


Session C, 2015 First Place: Polyphemus Pediculus Survivorship In Insect Repellent Treated Water, Camila Ferguson, Chloe Blaisdell, Sarah Lundy, Michaela Tersmette 2015 SUNY College of Environmental Science and Forestry

Session C, 2015 First Place: Polyphemus Pediculus Survivorship In Insect Repellent Treated Water, Camila Ferguson, Chloe Blaisdell, Sarah Lundy, Michaela Tersmette

Cranberry Lake Biological Station

At Cranberry Lake, one of the most commonly used topical products is insect repellant. Insect repellents are manufactured with varying percentages of DEET, or no DEET at all. DEET is a synthetic chemical consisting of organic compounds originally intended for jungle warfare. Trace amounts of DEET are found in local waterways throughout the summer, when swimming is a popular activity. This study focuses on Polyphemus pediculus, a zooplankton at the bottom of the aquatic food chain. Polyphemus pediculus is abundant in Cranberry Lake and is an indicator for health and functionality of the lake ecosystem. Three insect repellents containing varying ...


Session C, 2015 Third Place: Tardigrada Prevalence In Moss Cushion Growth Forms Among Habitats At Cranberry Lake, Jessica Brown, Ingrid Forward, Hannah Smith 2015 SUNY College of Environmental Science and Forestry

Session C, 2015 Third Place: Tardigrada Prevalence In Moss Cushion Growth Forms Among Habitats At Cranberry Lake, Jessica Brown, Ingrid Forward, Hannah Smith

Cranberry Lake Biological Station

Tardigrades (phylum Tardigrada) are most durable animals due to their ability to enter a state of cryptobiosis during extreme conditions. Tardigrades are often found living in mosses due to the mosses’ ability to retain moisture, but can be found in moss in dry habitats due to their ability to survive desiccation. This study assessed the abundance of Tardigrades in moss cushion life forms of marsh, brook, lake shore, and forest habitats. Relative abundance of Tardigrades among sites was quantified, soil pH was measured at each site, and percent moisture at each site was collected. ANOVA and Tukey’s Test were ...


Session C, 2015 Second Place: Habituation Of Creek Chub To A Chemical Alarm Stimulus, Benjamin Kosalek, Zachary Davis 2015 SUNY College of Environmental Science and Forestry

Session C, 2015 Second Place: Habituation Of Creek Chub To A Chemical Alarm Stimulus, Benjamin Kosalek, Zachary Davis

Cranberry Lake Biological Station

When minnows are attacked, their epithelial cells release a chemical alarm that will alert other minnows to the presence of a predator. Our study was to see if Creek Chub (Semotilus atromaculatus) would habituate to the signal if repeatedly exposed in the absence of a predator and thus ignore it. We tested 20 Creek Chub, half getting the treatment of chemical alarm and the other half a control of water. Each fish was individually exposed to their treatment five times. It was found that there was no change in reaction of the experimental group and Creek Chub had a relatively ...


At Home And At Large In The Great Plains: Essays And Memories, Paul Johnsgard 2015 University of Nebraska - Lincoln

At Home And At Large In The Great Plains: Essays And Memories, Paul Johnsgard

Zea E-Books

This volume presents fourteen essays (some updated) that originally appeared in Prairie Fire, a monthly free newspaper that for seven years (as of 2015) has carried important messages of social, environmental, and economic issues in a mature and nonpartisan manner to tens of thousands of residents of Nebraska, western Iowa, eastern Colorado, and southern South Dakota, and by mail to subscribers in the rest of the world. These essays discuss the North American east-west ecological boundaries, spring migration events, birds at the bird feeder, feathered survivors of a glacial past, the threatened sharp-tailed grouse of Nebraska and South Dakota, and ...


Nelson’S Big Horn Sheep (Ovis Canadensis Nelsoni) Trample Agassiz’S Desert Tortoise (Gopherus Agassizii) Burrow At A California Wind Energy Facility, Mickey M. Agha, David Delaney, Jeffrey E. Lovich, Jessica Briggs, Meaghan Austin, Steven J. Price 2015 University of Kentucky

Nelson’S Big Horn Sheep (Ovis Canadensis Nelsoni) Trample Agassiz’S Desert Tortoise (Gopherus Agassizii) Burrow At A California Wind Energy Facility, Mickey M. Agha, David Delaney, Jeffrey E. Lovich, Jessica Briggs, Meaghan Austin, Steven J. Price

Bulletin of the Southern California Academy of Sciences

No abstract provided.


Techno-Economic Analysis (Tea) And Life-Cycle Assessment (Lca) Of Extruded Aquafeed, Chinwendu F. Ozoh, Kurt A. Rosentrater 2015 Iowa State University

Techno-Economic Analysis (Tea) And Life-Cycle Assessment (Lca) Of Extruded Aquafeed, Chinwendu F. Ozoh, Kurt A. Rosentrater

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

The increasing world population has led to higher demand for protein source; Fish is a very good source of protein for humans. Hence, the need for more farmed fish. The aquaculture industry has been recognized as the fastest growing food production system globally, with a 10% increase in production every year. It is also one of the sustainable and reliable growth market for manufactured feed. This study was carried out to optimize cost and environmental performance in the production of aquaculture feed for small scale producers. Techno-economic analysis (TEA) and Life-cycle assessment (LCA) were tools for the analysis. In this ...


Life Cycle Assessment (Lca) And Techno-Economic Analysis (Tea) Of Tilapia-Basil Aquaponics, Kun Xie, Kurt A. Rosentrater 2015 Iowa State University

Life Cycle Assessment (Lca) And Techno-Economic Analysis (Tea) Of Tilapia-Basil Aquaponics, Kun Xie, Kurt A. Rosentrater

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Aquaponics is the system combining hydroponic and aquaculture, in which fish and plants are raised together, and they can be beneficial from each other as well as to each other. When the system is maintained properly and is in a balance status, aquaponics will mimic the natural ecosystem, use much less water than traditional aquaculture, and have almost no effluent. As a result, it is thought more environmentally friendly and sustainable. In this study, both Life Cycle Assessment (LCA) and Techno-Economic Analysis (TEA) of a tilapia and basil aquaponic system were conducted. Three scales, including a truly running system, pilot ...


Evaluation Of A Combination Approach To Pedagogy In A Soil Science Laboratory Classroom And An Environmental Site Assessment Sample, Emily Linda Gervais 2015 Brigham Young University - Provo

Evaluation Of A Combination Approach To Pedagogy In A Soil Science Laboratory Classroom And An Environmental Site Assessment Sample, Emily Linda Gervais

All Theses and Dissertations

Chapter 1 of this study explores research that has shown that the use of technology in the classroom can be beneficial to student learning. Additionally, a need for Environmental Site Assessment (ESA) instruction in university level core environmental science classrooms has been demonstrated. This study includes an investigation of the potential benefits of using a combination of pedagogies: web-based teaching tools and ESA instruction in a laboratory classroom. The research design included two class formats, one that employed web-based tools (PowerPoint and video) and ESA instruction, and one that did not, with four class sections. All classes were taught by ...


Indications Of Ancient Maya Soil Resource Management In Northern Belize, Austin Michael Ulmer 2015 Brigham Young University - Provo

Indications Of Ancient Maya Soil Resource Management In Northern Belize, Austin Michael Ulmer

All Theses and Dissertations

The objective of this study was to use soil chemical properties, particularly carbon isotopes to describe the agricultural landscape in the Blue Creek region on the Rio Bravo Escarpment in northwestern Belize. The primary question associated with this study focused on the comparative agricultural potential of the soils between the upland karst environment and the lowland coastal plains using the distribution and frequency of ancient Maya maize production. Soil physical features, such as clay concentrations throughout profiles in conjunction with soil chemical properties were used to aid in determining the level of ancient maize production. Isotopic evidence suggests that anciently ...


Comparative Analysis Of The Flexural Stiffness Of Pinniped Vibrissae, Carly C. Ginter Summarell, Sudeep Ingole, Frank E. Fish, Christopher D. Marshall 2015 Texas A & M University - College Station

Comparative Analysis Of The Flexural Stiffness Of Pinniped Vibrissae, Carly C. Ginter Summarell, Sudeep Ingole, Frank E. Fish, Christopher D. Marshall

Biology Faculty Publications

No abstract provided.


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