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Incubating Education: The Lived Experiences Of Louisiana Elementary And Middle School Teachers When Piloting A 4-H Stem School Enrichment Curriculum, Crystal Rose Ahrens

LSU Doctoral Dissertations

This study addressed a deficiency in the agricultural literacy of the U.S. population by focusing on the challenges that core subject teachers face when integrating agriculture into their curriculum. Using a phenomenological research approach, this investigation explored the lived experiences of Louisiana teachers who piloted a 4-H STEM curriculum, focusing on the growth in agricultural literacy of the teachers while instructing third and eighth-grade students on the agricultural-based and STEM-focused topic of embryology. Employing a transcendental phenomenological approach, I acknowledged my biases through reflexivity and adhered to ethical considerations, including informed consent and confidentiality. Key findings emerged through four themes …

The Effects Of Poor Maternal Nutrition During Gestation In Sheep On The Reproductive Efficiency Of The Offspring, Morgan Dougherty

Honors Scholar Theses

Poor maternal nutrition during gestation negatively impacts fetal programming and the development of the hypothalamic-pituitary-ovarian axis in the offspring. Reproductive health of ewes can be characterized by concentrations of reproductive hormones including follicle stimulating hormone (FSH), luteinizing hormone (LH), and progesterone, particularly during the estrous cycle. We hypothesized that ewes born to dams that experienced poor maternal nutrition during gestation would have reduced reproductive capability and efficiency. This means that they would take longer to become pregnant and have reduced concentrations of reproductive hormones compared with those born to mothers fed the control diet. Pregnant dams (F0) were fed one …

Scholarly Open Access Veterinary And Animal Science Journals Indexed In The Doaj: A Bibliometric Analysis, Ganesan Rathinasabapathy, Koti Veeranjaneyulu

Library Philosophy and Practice (e-journal)

The objective of this study is to report the outcome of the bibliometric analysis of Open Access (OA) journals in veterinary and animal sciences (VAS) indexed by the Directory of Open Access Journals (DOAJ).The DOAJ which indexed 16,460 open access journals as on 10 June 2021, contains 335 open access veterinary and animal science journals (2.03%) and provides access to 1,63,500 articles which is about 2.63% of the total articles. Two journals were indexed in 2003 and the highest number of journals i.e. 46 (13.73%) were added during 2018. The 335 OA journals are contributed by 63 countries and the …

Compositions And Methods Of Enhancing Immune Responses To Eimeria, Walter G. Bottje, Billy M. Hargis, Luc Berghman, Young M. Kwon, Kimberly Cole, Mandy Cox, Sherryll Layton, Saeed El-Ashram, John Barta, Guillermo L. Tellez

Patents Granted

Vaccines comprising TRAP polypeptides and Salmonella enteritidis vectors comprising TRAP polypeptides are provided. The vaccines may also include a CD154 polypeptide capable of binding to CD40. Also provided are methods of enhancing an immune response against Apicomplexan parasites and methods of reducing morbidity associated with infection with Apicomplexan parasites.

The Effects Of Temperature And Precipitation On Growth In Beef Cattle For The Southern Illinois Region, Cameron Helderman

Research Papers

The demand for beef around the United States has been growing exponentially over the years because of our growing population. This means that producers must maximize the growth and development of their cattle and herds in total so that they can meet that growing demand. Many factors come into consideration when making decisions on increasing the turnover rate on the farm, but one of those big decisions is weather, especially temperature and precipitation. These two variables can have a direct effect on the growth and development of cattle. If conditions are harsh, their feed intake could decrease because of sickness, …

Differentially Expressed Genes In Blood From Young Pigs Between Two Swine Lines Divergently Selected For Feed Efficiency: Potential Biomarkers For Improving Feed Efficiency, Haibo Liu, Yet T. Nguyen, Daniel S. Nettleton, Jack C. M. Dekkers, Christopher K. Tuggle

Dan Nettleton

The goal of this study was to find potential gene expression biomarkers in blood of piglets that can be used to predict pigs’ future feed efficiency. Using RNA-seq technology, we found 453 genes were differentially expressed (false discovery rate (FDR) ≤ 0.05) in the blood of two Yorkshire lines of pigs divergently selected for feed efficiency (FE) based on residual feed intake (RFI). Genes involved in several biosynthetic processes were overrepresented among genes more highly expressed in the low RFI line compared to the high RFI line. Weighted gene co-expression network analysis (WGCNA) also revealed genes involved in some of …

Compositions And Methods Of Enhancing Immune Responses To Eimeria, Walter G. Bottje, Billy M. Hargis, Luc Berghman, Young M. Kwon, Kimberly Cole, Mandy Cox, Sherryll Layton, Saeed El-Ashram, John R. Barta, Guillermo L. Tellez

Patents Granted

Vaccines comprising TRAP polypeptides and Salmonella enteritidis vectors comprising TRAP polypeptides are provided. The vaccines may also include a CD154 polypeptide capable of binding to CD40. Also provided are methods of enhancing an immune response against Apicomplexan parasites and methods of reducing morbidity associated with infection with Apicomplexan parasites.

Compositions And Methods Of Enhancing Immune Responses, Walter G. Bottje, Billy M. Hargis, Luc Berghman, Young M. Kwon, Kimberly Cole, Mandy Cox, Sherryll Layton

Patents Granted

Provided herein are Salmonella enteritidis 13A strains and compositions comprising these strains. Also provided are methods of enhancing an immune response against Influenza A and methods of reducing morbidity associated with an Influenza A infection. Methods of enhancing an immune response to a vaccine vector by expressing a polypeptide of CD154 capable of binding CD40 are also disclosed. Methods of developing a bacterial vaccine vector are disclosed. Methods of generating scarless site-specific mutations in a bacterium are also disclosed.

Winter Grazing Management, Stephen K. Barnhart, James R. Russell, Douglas L. Karlen, Michael J. Tidman

Douglas L Karlen

Why winter grazing? Beef cow herd and sheep flock records show that winter feeding costs are livestock producers' single largest production expense. Managing through winter weather while keeping feeding costs low is an essential part of maintaining a profitable operation. Iowa's climate generally allows forage growth only during a 7-to-8 month period. Extending the grazing of this forage--even an extra 3 or 4 weeks in late autumn and winter--is an economical way to maintain or increase livestock profitability. Some producers extend the grazing season by using stockpiled forage, whereas others use crop residue, and many combine the use of stockpiled …

Lactic Acid Bacteria And Their Use In Swine Direct-Fed Microbials, Mari-Ellen Davis, Joshua M. Rehberger, Charles Maxwell, Thomas G. Rehberger, Mike King

Patents Granted

TRFs useful for identifying strains of interest are provided. A method of identifying one or more strain that can be used as a direct-fed microbial is also provided. One or more strain identified by the method is additionally provided. A method is also provided for administering to an animal an effective amount of the one or more strain. Additionally provided is an isolated strain chosen from at least one of Lactobacillus acidophilus strain P1B c6 (NRRL B-50103), Lactobacillus salivarius strain o246e 33w (NRRL B-50102), Pediococcus acidilactici strain o246e 42 (NRRL B-50171), and Pediococcus acidilactici strain P1J e3 (NRRL B-50101). An …

Compositions And Methods Of Enhancing Immune Responses, Walter G. Bottje, Billy M. Hargis, Luc Berghman, Young M. Kwon, Kimberly Cole, Mandy Cox, Sherryll Layton

Patents Granted

Provided herein are Salmonella enteritidis 13A strains and compositions comprising these strains. Also provided are methods of enhancing an immune response against Influenza A and methods of reducing morbidity associated with an Influenza A infection. Methods of enhancing an immune response to a vaccine vector by expressing a polypeptide of CD154 capable of binding CD40 are also disclosed. Methods of developing a bacterial vaccine vector are disclosed. Methods of generating scarless site-specific mutations in a bacterium are also disclosed.

Block And Bridle Annual 2016

Block and Bridle Student Organization

Three objectives of the National Block and Bridle Club are to promote animal agriculture through the activities of the club, to supplement students’ study of the animal sciences, and to bring about a closer relationship among students who choose to be a part of the organization. I believe the Block and Bridle club at the University of Nebraska - Lincoln has been successful in accomplishing these goals over the past year and I sincerely thank all of the officers and members who have given their time and effort to make this possible. I am excited to say that our active …

Effects Of Corn Crop Residue Grazing On Soil Physical Properties And Subsequent Soybean Production In A Corn-Soybean Crop Rotation (A Progress Report), Justin Clark, James R. Russell, Douglas Karlen, Darrell Busby, L. James Secor, Brian Peterson, Larry Pellack, Carroll Olsen, Shawn C. Shouse

Douglas L Karlen

The highest cost to beef cow-calf producers is the feeding of stored feeds in winter months. To lower feed costs, many producers will try to extend the grazing season into the winter. The primary resource for winter grazing in the Midwest is corn crop residues. On the average, corn crop residue grazing will reduce the amount of hay needed to maintain cows by approximately one-half ton per acre grazed over the winter. Although crop residue grazing is quite effective in reducing feed costs, some producers are concerned that corn residue grazing will have an adverse effect on soybean yields the …

Winter Grazing Of Corn Residues: Effects On Soil Properties And Subsequent Crop Yields From A Corn-Soybean Crop Rotation, W. Darrell Busby, James R. Russell, Douglas L. Karlen, L. James Secor, Brian Peterson, Carroll Olson, Shawn C. Shouse, Dallas L. Maxwell

Douglas L Karlen

Corn residues could be a good resource for winter cattle grazing. The study investigates whether winter grazing causes soil compaction and yield reduction in crops that are planted following grazing.

Effects Of Corn Crop Residue Grazing On Soil Physical Properties And Subsequent Soybean Production In A Corn–Soybean Crop Rotation, Justin Clark, James R. Russell, Douglas Karlen, W. Darrell Busby, Brian Peterson, Larry Pellack, Dallas L. Maxwell

Douglas L Karlen

For three years beginning in 1999, a 96-acre field near Atlantic, Iowa was used to study the effects of corn residue grazing by beef cows on soil characteristics and soybean yields in subsequent years. Each winter, cows were allowed to graze corn crop residues inside selected paddocks in four sub-fields over five monthly periods. To compare the effects of grazing, one paddock was left as an ungrazed control. At the end of grazing in the spring, soil bulk density, moisture content, and penetration resistance were measured inside and 15 ft outside twelve grazing exclosures in each paddock. Soil surface roughness, …

Compositions And Methods Of Enhancing Immune Responses To Flagellated Bacterium, Walter G. Bottje, Billy M. Hargis, Luc Berghman, Young M. Kwon, Kimberly Cole, Mandy Cox, Sherryll Layton

Patents Granted

Vaccines comprising fliC and CD 154 polypeptides and Salmonella enteritidis vaccine vectors comprising fliC polypeptides are provided. Also provided arc methods of enhancing an immune response against flagellated bacteria and methods of reducing morbidity associated with infection with flagellated bacteria.

Integrating Experiential Learning Into Animal Science Curriculum Through A Hands-On Beef Cattle Management And Marketing Contest, Corinne J. Harrison

Theses and Dissertations

According to the Illinois Agricultural Education, nearly 61% of students beginning their undergraduate studies in Agriculture at a 2-year college in Illinois come from non-farm backgrounds. Yet, knowledge of and experience in livestock operations is still a requirement for many careers in the animal science industry. In response to this predicament, the Department of Agriculture at Illinois State University has implemented a course that provides students an opportunity to gain hands-on experience with beef cattle management and marketing. The course was designed to enhance learning by requiring students to develop and execute a management and marketing plan for a pen …

Compositions And Methods Of Enhancing Immune Responses To Eimeria, Walter G. Bottje, Billy M. Hargis, Luc Berghman, Young M. Kwon, Kimberly Cole, Mandy Cox, Sherryll Layton, Said El-Ashram, John R. Barta, Guillermo L. Tellez

Patents Granted

Vaccines comprising TRAP polypeptides and Salmonella enteritidis vectors comprising TRAP polypeptides are provided. The vaccines may also include a CD154 polypeptide capable of binding to CD40. Methods of enhancing an immune response against Apicomplexan parasites and methods of reducing morbidity associated with infection with Apicomplexan parasites are also provided.

The Effect Of Il-6 On Satellite Cell Activity In Tumor Bearing Mice

samuel.lambert@uconn.edu

Cancer cachexia results in severe muscle atrophy and can greatly hinder the quality of life and chances of survival for the afflicted individual. In studies where cachexia-induced muscle atrophy is inhibited, survival is prolonged. The activity of satellite cells, the muscle progenitor cells that incorporate into muscle fibers to cause hypertrophy, is the focus of this study. It was hypothesized that mRNA expression of Pax7, MyoD, FoxO1, FoxO3a, and FoxO4 would be altered in injured muscle in TB animals, and this would be attenuated by inhibition of interleukin (IL)-6 signaling. To test this hypothesis, tumor bearing (TB) and control mice …

Compositions And Methods Of Enhancing Immune Responses, Walter G. Bottje, Billy M. Hargis, Luc Berghman, Young M. Kwon, Kimberly Cole, Mandy Cox, Sherryll Layton

Patents Granted

Salmonella enteritidis 13A strains and compositions comprising these strains are provided. Methods of enhancing an immune response against Influenza A; of reducing morbidity associated with an Influenza A infection; of enhancing an immune response to a vaccine vector by expressing a polypeptide of CD 154 capable of binding CD40; of developing a bacterial vaccine vector are disclosed, and of generating scarless site-specific mutations in a bacterium are disclosed.

Lactic Acid Bacteria And Their Use In Swine Direct-Fed Microbials, Mari-Ellen Davis, Joshua M. Rehberger, Charles Maxwell, Thomas G. Rehberger, Mike King

Patents Granted

'TRFs useful for identifying strains of interest are provided. A method of identifying one or more strain that can be used as a direct-fed microbial is also provided. One or more strain identified by the method is additionally provided. A method is also provided for administering to an animal an effective amount of the one or more strain. Additionally provided is an isolated strain chosen from at least one of Lactobacillus acidophilus strain PlB c6 (NRRL B-50103), Lactobacillus salivarius strain o246e 33w (NRRL B-50102), Pediococcus acidilactici strain o246e 42 (NRRL B-50171), and Pediococcus acidilactici strain PlJ e3 (NRRL B-50101). An …

Beef Cattle Breeding Project Progress Report: Growth-Trait Epds For 1998- And 1999-Born Calves, Abebe T. Hassen, Doyle E. Wilson, Gene H. Rouse, Richard G. Tait Jr.

Richard G. Tait Jr.

The Iowa State University beef cattle breeding project was designed to develop two selection lines of beef cattle for use as a research base to answer questions that influence genetic improvement. The project was started in 1996 and is being conducted at the Rhodes (central Iowa) and McNay (southern Iowa) research and demonstration farms.

Comparison Of Ultrasound And Carcass Measures To Predict The Percentage Of Lean Beef From Four Primal Cuts – A Progress Report, Richard G. Tait Jr., Gene H. Rouse, Doyle E. Wilson

Richard G. Tait Jr.

The objective of this study was to determine how real-time ultrasound (RTU) measurements would compare with carcass measurements to predict the percentage of lean from the four primals (PERL4P). Data were collected on market ready cattle (n=490). Traditional carcass measures collected were: (1) hot carcass weight (HCW); (2) 12–13th rib fat thickness (CFAT); (3) 12–13th rib ribeye area (CREA); and (4) percentage of kidney, pelvic, and heart fat (KPH).

Beef Cattle Breeding Project Progress Report: Body Composition Epds Determined From Ultrasound Measures, Doyle E. Wilson, Abebe T. Hassen, Gene H. Rouse, Richard G. Tait Jr.

Richard G. Tait Jr.

The Iowa State University beef cattle breeding project was initiated in 1996, and is being conducted at the Rhodes and McNay Research and Demonstration Farms. The project uses the field data of the American Angus Association (AAA) along with the research resource cattle of the farms to study questions that will enhance the genetic investigations using the field data.

Beef Cattle Breeding Project Progress Report: Growth Trait Epds For 1998-, 1999-, And 2000-Born Calves, Abebe T. Hassen, D. E. Wilson, Gene H. Rouse, Richard G. Tait Jr.

Richard G. Tait Jr.

The Iowa State University beef cattle breeding project was designed to develop two selection lines of beef cattle for use as a research base to answer questions that influence genetic improvement. The project was started in 1996 and is being conducted at Rhodes (central Iowa) and McNay (southern Iowa) research and demonstration farms.

Effects Of Integrating Mathematical Concepts Into An Animal Science Curriculum, Andrea Rae Clark

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Nationwide, mathematical scores have been a topic of concern among elementary and secondary educators for many years. Teaching contextualized math has been found to be effective and includes providing a direct application to real-life scenarios rather than teaching linear equations and algebraic principles outside of their application.

A study was conducted measuring the effects of integrating mathematical skills in an animal science curriculum. All students were taught a unit of instruction about animal nutrition and feeding. The control group received a typical nutrition unit and the treatment group received the same unit of instruction with the addition of mathematical skill …

Body Composition Changes In Bulls From Weaning To Yearling Part I — Muscle, Waste Fat And Taste Fat Deposition, Gene H. Rouse, Doyle E. Wilson, Richard G. Tait Jr., Mike Anderson, Abebe T. Hassen

Richard G. Tait Jr.

These results suggest how muscle, subcutaneous fat and intramuscular fat are deposited from weaning to yearling. How might these results be explained?

• Tissue maturity —muscle matures earlier than fat in the growth process and has nutrient priority over fat when muscle is making maximum growth. Cattle normally make maximum growth, rate/day, when muscle is being deposited at the maximum rate. Why? Muscle has a much higher water content than fat, therefore, it requires less nutrients to deposit a pound of muscle then a pound of fat.
• 10-1 Concept—during the fattening process, 10 pounds of waste fat (subcutaneous, seam and internal …

Body Composition Changes In Bulls From Weaning Age To Yearling Age: Muscle Fat Deposition, Gene H. Rouse, Richard G. Tait Jr., M. Anderson, Abebe Hassen

Richard G. Tait Jr.

With the advent of real-time ultrasound, repeated measures of body composition changes, such as fat cover, rib eye area, and percentage intramuscular fat have greatly added to our understanding of beef cattle growth and development.

Comparison Of Ultrasound And Carcass Measures To Predict Percentage Of Beef Retail Product From Four Primal Cuts—Final Report, Richard G. Tait Jr., Gene H. Rouse, Doyle E. Wilson

Richard G. Tait Jr.

The objective of this study was to determine how real-time ultrasound (RTU) measurements would compare with carcass measurements to predict the percentage of retail product from the four primals (PRP4P). Data were collected on market ready cattle (n=471). Traditional carcass measures collected were: 1) hot carcass weight (HCW), 2) 12–13th rib fat thickness (CFAT), 3) 12–13th rib ribeye area (CREA), and 4) percentage of kidney, pelvic, and heart fat (CKPH). Live animal ultrasound measures collected were: 1) scan weight (SCANWT), 2) 12–13th rib fat thickness (UFAT), 3) 12–13th rib ribeye area (UREA), 4) subcutaneous fat thickness over the termination of …

Characterizing Overall Response To Two-Shot Vaccination For Bvdv Type 2 In Angus Weanling Calves, Richard Tait, Erika Downey, Mary Mayes, Julia Ridpath, Dorian Garrick, James Reecy

Richard G. Tait Jr.

Vaccination is a management strategy utilized to help reduce prevalence of bovine respiratory disease in feedlots. However, not all animals respond similarly to vaccinations. It is believed that an animal’s genetics control part of the ability to respond to a vaccination protocol. In order to evaluate the genetic control of a new trait such as response to vaccination, it is important to understand the non-genetic factors that affect an animal’s response to vaccination. The objective of this study was to characterize the non-genetic factors affecting overall response to a two-shot vaccination for bovine viral diarrhea virus type 2 (BVDV2) in …