Digital Commons Network^™

That’S Not In My Position Description: A Discourse Analysis Of Sbae Migratory Context, Becky Haddad, Jonathan Velez, Josh Stewart, Haden Botkin

Department of Agricultural Leadership, Education, and Communication: Faculty Publications

While the choice to move to a new school is personal, many play a role in justifying that choice for the mobile teacher. These justifiers—or influencers—make up the socializing network for teachers (in this case, SBAE teachers) in new settings. Our study outlined how mobile SBAE teachers rationalize the choice to change schools and validate career moves. We used a positioning theory approach to discourse to give migrators (teachers who change schools) and influencers a voice. Positioning theory allowed us to situate migrators as they reflected on their choice to change school districts, and influencers as they recounted their …

Cultivating Access: The Benefits And Challenges Of Using Community Land Trusts To Preserve Farmland And Support Farmers., Meghan Daly

Graduate Student Theses, Dissertations, & Professional Papers

Agricultural land protected by community land trusts (CLTs) is more likely to remain in active production due to the CLT’s ability to enforce land use practices and select tenants committed to farming. While land tenure approaches vary among CLTs, protected agricultural lands typically utilize long-term leases with affordable rents (Ela and Rosenberg, 2020). Such leasing arrangements enable farmers to access land at prices unaffected by escalating land values (Schwartz et al., 2013). The CLT model not only safeguards farmland but also promotes active agricultural production, thereby ensuring local food supply and providing economic opportunities for farmers.

Despite the promising potential …

Gamma Sigma Delta, Nebraska Chapter Newsletter, Issue #63 January 2024

Gamma Sigma Delta, Nebraska Chapter: Newsletters

President's message, Paul E. Read

Gamma Sigma Delta committees 2024

2022 chapter awards: The Honor Society of Agriculture, Gamma Sigma Delta

New members inducted

Annual dues notice, Robert J. Wright, membership Coordinator

Membership list

Membership renewal form

Gamma Sigma Delta, Nebraska Chapter Outstanding Graduate & Undergraduate Student Award Fund

In memoriam: Dennis Lee Kahl (February 8, 1950-August 12, 2020); Col. Warder L. Shires (March 23, 1932-March 6, 2021); Dr. Leland "Lee" Julius Albert Volker (October 24, 1942-March 11, 2022); Richard "Dick" Dam (September 17, 1929-September 17, 2022); John W. Doran (November 12, 1945-November 30, 2022); Donald H. Steinegger (January 1, …

Estimating South Dakota’S Capacity To Meet K-12 School Meal Fruit And Vegetable Requirements With State-Grown Produce, Bridgette Bienias

Electronic Theses and Dissertations

Objective: Quantify South Dakota (SD)’s capacity to procure locally-sourced fruit and vegetables (FVs) for K-12 school meals.
Methods: Secondary analysis of 2017 SD agricultural census and school meal data. Yields were converted to edible cups of FVs using school meal guidelines provided by the U.S. Department of Agriculture. Student enrollment and meal redemptions were used to estimate the number of FV cups needed.
Results: Estimated SD FV production met minimum total K-12 cup requirements, except for total fruit (66%) and dark green vegetables (80%). Legumes supplied 77% of the total cups of vegetables produced in 2017, whereas dark green vegetables …

Increasing Soy Products Inclusion In Swine Diets To Improve Growth Performance, Health, And Pork Quality, Ashir Foreman Atoo

Electronic Theses and Dissertations

Despite its excellent nutritional profile, soybean meal (SBM) is limited in nursery pig diets due to its anti-nutritional factors (ANFs), which young pigs tolerate poorly. In the first study, strategies to mitigate these effects included supplementation with enzymes, alone or with acidifiers. A total of 240 weaned pigs (5.9 ± 0.8 kg average body weight [BW]) were assigned in randomized complete block design to five dietary treatments: low, medium, or high SBM diets, high SBM with multienzyme, and high SBM with multienzyme plus acidifier. Diets were fed in three phases: phase 1 (0–1 weeks), phase 2 (1–3 weeks), and phase …

A Tale Of Two Working Landscapes, Sage C. Sutcliffe

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Review Of Detection Limits For Various Techniques For Bacterial Detection In Food Samples, Xinyi Zhao Nanolab Research Centre, Abhijnan Bhat, Christine O’Connor School Of Food Science And Environmental Health, James Curtin Faculty Of Engineering And Built Environment, Baljit Singh, Micra Biodiagnostics Technology Gateway And Health, Engineering & Materials Sciences (Hems) Research Hub, Furong Tian Nanolab Research Centre

Articles

Foodborne illnesses can be infectious and dangerous, and most of them are caused by bacteria. Some common food-related bacteria species exist widely in nature and pose a serious threat to both humans and animals; they can cause poisoning, diseases, disabilities and even death. Rapid, reliable and cost-effective methods for bacterial detection are of paramount importance in food safety and environmental monitoring. Polymerase chain reaction (PCR), lateral flow immunochromatographic assay (LFIA) and electrochemical methods have been widely used in food safety and environmental monitoring. In this paper, the recent developments (2013–2023) covering PCR, LFIA and electrochemical methods for various bacterial species …

Effects Of Habitat Selection And Individual Quality On The Reproductive Success Of Barn Owls (Tyto Furcata), Jaime E. Carlino

Cal Poly Humboldt theses and projects

The hypothesis of adaptive breeding habitat selection proposes congruence between the evolved selection of habitats and fitness components such as reproductive success. However, mismatches between habitat selection and observed fitness outcomes are not unusual and can arise for multiple reasons. Variation in individual qualities of animals has also been found to affect reproduction and survival. I examined associations between barn owl nest box selection, reproductive output, and plumage characteristics previously shown to correspond to individual quality. I found that barn owls selected tall nest boxes made of wood, mounted high off the ground, and with increased proportions of grassland around …

Women In Extension Persevering In Leadership Roles, Lexis Danielle Trickett

Graduate Theses, Dissertations, and Problem Reports (ETD)

Over the last several decades, the rates at which women have been pursuing higher levels of education have steadily increased. However, there is a discrepancy between the number of women graduating, and the amount entering the workforce, specifically in leadership roles. The purpose of this study was to share a current profile of women in the West Virginia Cooperative Extension Service by allowing them to describe their career journeys, supports and barriers they may or may not have faced, and mentoring experiences. By using a non-experimental quantitative methodology, a population of male and female Extension Agents and Specialists were surveyed …

Hepatic Mrna Expression Of Innate And Adaptive Immune Genes In Beef Steers With Divergent Residual Body Weight Gain, Deborah Ologunagba

Graduate Theses, Dissertations, and Problem Reports (ETD)

Immune system function is critical to maintaining the health and increasing productivity of cattle, affecting both their growth and their disease resistance. In an efficient immune system, the liver assumes an integral function in detoxification and metabolic processes and contributes substantially to overall production and immunity. In this study, we evaluated the hepatic mRNA expression of genes involved in innate and adaptive immunity in crossbred beef steers with either a positive or negative residual body weight gain (RADG). Positive-RADG beef steers (n = 8; RADG = 0.76 kg/d) and negative-RADG beef steers (n = 8; RADG = -0.64 kg/d) were …

Leds For Controlled Environment Agriculture: Leveraging Light To Optimize Crops, Tristan D. Sanders

Graduate Theses, Dissertations, and Problem Reports (ETD)

Indoor agriculture is a growing industry with many of its benefits being recognized. Light emitting diodes (LEDs) reduce production costs compared to traditional light sources. LEDs emit narrow bandwidths of light that allow growers to easily change the wavelengths plants are being grown under by using different combinations of wavelengths. Manipulating the light that plants are grown under is a method to change their physiology which is the basis of this thesis. The goal of the first two studies was to investigate how different light spectra can be used to enhance the nutrition content, growth, and morphology of kale and …

Perceptions Of Professionals, Faculty, And Students Regarding The Implementation Of An Agricultural Communications Degree Program In The United Kingdom, Jefferson D. Miller, Abby Davis, Kobina Danful Fanyinkah, Alex Mcleod, Cassandra Cox, Jill Rucker

Agricultural Education, Communications and Technology Faculty Publications and Presentations

The purpose of this study was to determine the perceptions of professionals, faculty, and students regarding the implementation of an agricultural communications degree program in the United Kingdom (U.K). It aimed to gather detailed opinions to aid in the planning of future agricultural communications curricula in the U.K., where no formal academic programs in this discipline exist in higher education. This study used a qualitative approach in the form of interviews to gain in-depth opinions on four different research objectives. Participants were pooled from three different demographic groups in the U.K: industry professionals, faculty, and students. These stakeholder expressed that …

Growing South Dakota (Winter 2024), College Of Agriculture, Food And Environmental Sciences

Growing South Dakota (Publication of the College of Agriculture, Food and Environmental Sciences)

[Page] 3 Continuing a Leadership Journey
/="/">[Page] 5 CAFES Leadership Team Grows
/="/">[Page] 7 Award-Winning Faculty & Staff
/="/">[Page] 9 New Endowment Holders Recognized
/="/">[Page] 10 Inaugural Precision Livestock Field School Offered at SDSU Cottonwood Field Station
/="/">[Page] 11 SDSU Celebrates Professional Program in Veterinary Medicine Students [Page] 13 Clay Carlson, SDSU Meat Science Graduate Student Approaches School and Life with Winning Mindset
/="/">[Page] 15 SDSU Alumni has been selected as the Head Coach of the South Dakota State University Livestock Judging Team
/="/">[Page] 16 Livestock Units Promote Hands-On Learning & Premier Research …

From The Ground Up: A Complex Systems Approach To Climate Change Adaptation In Agriculture, Karen Buchsbaum

Antioch University Dissertations & Theses

Climate change presents an unprecedented challenge to global agriculture and food security. Small farms are especially vulnerable to the local impacts of large-scale drivers of change. Effective adaptation in agriculture requires working across scales, and geographic, political, and disciplinary boundaries to address barriers. I use elements of case study, agent-based modeling and serious games, to design a model of farmer decision-making using the sociocognitive framework of climate change adaptation. I examine how adaptation functions as a process, how complex dynamics influence farmer behavior, and how individual decisions influence collective behavior in response to climate change. This novel approach to adaptation …

What Goes In And What Comes Out: A Scoping Review Of Regenerative Agricultural Practices, Rebecca Voisin, Pierre Horwitz, Stephanie Godrich, Ros Sambell, Katherine Cullerton, Amanda Devine

Research outputs 2022 to 2026

This scoping review examined peer-reviewed and gray literature to explore what a “no-to-low external input” statement means for regenerative agriculture. Five organic amendment inputs (compost extract, manure, mulch, biochar, food systems waste) and four land management processes (livestock management and integration, crop diversity, tillage reduction, comprehensive approach) were identified. Findings include “no-to-low external input” models arising from processes which function to displace external inputs (e.g., synthetic fertilizer). Organic amendment inputs and regenerative land management processes promote biology and improve nutrient cycling at soil, farm, and landscape scales. Regenerative agriculture overlaps with other farming practices including those associated with agroecology and …

Review On Locusta Migratoria Cinerascens (Fabricius, 1781)., Laib Djamel Eddine, Benzehra Abdelmadjid, Laib Imen, Aouzal Badis, Salah Akkal

Journal of Bioresource Management

The migratory locust, scientifically known as Locusta migratoria (Linnaeus, 1758), is a captivating insect species that has drawn the interest of scientists, farmers, and the general public. Recognized for its notorious swarming behavior, this insect has the potential to cause extensive damage to crops, leading to agricultural plagues and food shortages. However, beyond its reputation as a pest, the migratory locust is a subject of scientific fascination due to its intricate life cycle, remarkable ability to undergo rapid and dramatic transformations, and its crucial role within the ecosystems it inhabits. This review delves into various facets of L. migratoria, including …

Microbes Mediated Keratin Extraction From Poultry Waste And Assessment Of Its Efficacy In Growth Promotion Of Zea Mays And Triticum Aestivum, Imran Ahmad, Aisha Waheed Qurashi, Roheela Yasmeen

Journal of Bioresource Management

Feathers are a waste product of the poultry industry and are considered a major pollutant of the environment. Soil associated with poultry farms is a rich source of indigenous bacteria that are involved in biodegradation of keratin of the feathers of Gallus gallus domesticus. The present study was designed to understand the role of microbes in the degradation of a feather’s keratin and its possible utilization as a bio-protein for plants. In our studies, Keratinolytic activity was high at 37-45 ℃ and at 7.5-9.5 pH. Pseudomonas aeruginosa was identified by 16S rRNA sequencing as the most active keratinolytic strain. …

Utilizing An Extract From Endophytic Fungus, Alternaria Alternata, Isolated From Ricinus Communis L. Leaves As A Biological Agent For Controlling The Migratory Locust In Algeria, Laib Djamel Eddine, Benzehra Abdelmadjid, Laib Imen, Aouzal Badis, Akkal Salah

Journal of Bioresource Management

In this research, we aimed to explore the insecticidal potential of Alternaria alternata, an endophytic fungus derived from the leaves of castor oil plant. To test its insecticidal efficacy, various doses of A. alternata mycoextract were administered to Locusta migratoria L. through both topical and oral pathways. The findings revealed that the insects displayed the highest susceptibility to a concentration of 2 g/L, leading to an impressive mortality rate of 87.5 % and 93.75 % for topical and oral administrations, in the same order. The extract displayed remarkable insecticidal properties, demonstrating LC50 values of 1.09 g/L for the topical …

Determination Of Eight Anions In Liquid Milk, Wu Ziling, Yao Xiaoqing, Shen Yingtao, Huang Jiale, He Minheng

Food and Machinery

Objective： A rapid method was established for the simultaneous determination of variety anions in liquid milk. Methods： The macromolecular protein in liquid milk was precipitated by acetonitrile, and a variety of anions were extracted. After purification by C₁₈ column, the material was separated by Dionex IonPac AS19-HC ion column with gradient elution of potassium hydroxide and conductivity detection. Finally, a method for the determination of bromate, thiocyanate, nitrite, nitrate, chlorate, perchlorate, phosphate and iodine ion in liquid milk was established using ion chromatograph. Results： The results showed that the correlation coefficients （R²）of eight kinds of anion …

Solid Phase Extraction-Gas Chromatography-Flame Ionization Detection （Spe-Gc-Fid） For The Detection Of Mineral Oil Saturated Hydrocarbons （Mosh） In Infant Formula, Tang Wanli, Feng Yanying, Xiang Jun, Qin Haijiao, Hu Lingli

Food and Machinery

Objective: To establish a new accurate method for the determination of mineral oil saturated hydrocarbon （MOSH） in infant formula by solid phase extraction combined with gas chromatography-Flame Ionization Detection （SPE-GC-FID）. Methods: Different extraction methods such as soaking extraction, oscillating extraction, ultrasonic assisted extraction, liquid-liquid extraction were used to extract MOSH from infant formula milk powder, and different extraction solvents such as n-hexane, isooctane, benzene, mixed solvents were used to extract MOSH. The optimal extraction method and extraction solvent were determined based on the extraction amount of MOSH. The target compounds purified by AgNO₃ SPE column, and finally detected by …

Determination Of 5 Kinds Of Biogenic Amines In Cheeses By High Performance Liquid Chromatography-Tandem Mass Spectrometry, Zhang Hui, Cao Hui, Wang Jin, Xiao Gongnian, Jiang Kan

Food and Machinery

Objective: A new technical idea was provided for the study of biogenic amine formation mechanism and food safety risk assessment. Methods: An analytical method was established for determination of tyramine, phenylethylamine, tryptamine, octopamine and cadaverine in cheeses with high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Biogenic amines were extracted by ultrasonic-assisted solvent extraction from cheeses, and were separated by HILIC column, determined by positive electrospray ionization (ESI) with multiple reaction monitoring (MRM) mode, quantified by the internal standard method. The effect of extraction solvent type, ultrasonic time and matrix effect on the peak area was studied, and the performance of …

Optimization The Process Of Increasing The Content Of Slowly Digestible Starch In Highland Barley By Β-Amylase, Li Yan, Liu Juan, Song Xiaofan, Sun Kangna, Chen Fuzhang, Yuan Zhenzhen

Food and Machinery

Objective: This study aimed to explore a kind of food with low glycemic index (GI) and SDS serial products. Methods: Using highland barley powder as raw material. The optimal enzymolysis conditions were determined by single factor test and response surface test. The hypoglycemic activity of α-glucosidase and α-amylase in vitro was evaluated. Results: The content of slow digestion starch in the enzymolysis highland barley powder reached the highest of 16.55%, under the control of the conditions of 60 U/g β-amylase, 3.5 h enzymolysis time, 51 ℃ enzymolysis temperature, and 1∶12 (g/mL) solid to liquid ratio. Meanwhile, the …

Progress In The Effect Of Oligosaccharide Modification On Gelability Of Egg White Protein, Zhang Gensheng, Su Wenwen, Xu Guiyang, Su Lirui, Fei Yingmin

Food and Machinery

Egg white protein is a high-quality protein with high nutritional value and a variety of functional properties. The oligosaccharides can be covalently bound to the egg white protein through the glycosylation reaction, and the functional properties of the conjugates were improved compared with the natural egg white protein. In this review, the gel mechanism of oligosaccharide-egg white protein conjugates was reviewed, and the influencing factors of oligosaccharide-modified egg albumin gels were discussed. Moreover, effects of oligosaccharides on the functional properties of egg albumins were summarized, and the processing and application of oligosaccharide-modified egg albumin were prospected.

Research Progress In Extraction Technology And Biological Activity Of Oleuropein, Guo Weiping, Lu Xu, Chu Zejun, Luo Denglin, Xiang Jinle, Xu Yunfeng

Food and Machinery

The review summarized the latest domestical and international research progress in the biosynthesis pathway, safety, extraction process, and biological activity of oleuropein in recent years. The problems in the olive industry was analyzed and its future development direction was prospected.

Effects Of Sublimation Temperature On Cell Microstructure Of Pear Melon During Vacuum Freeze Drying, Tian Jinjin, Yao Chaoyang, Zhang Zhiqiang, Zhang Zhe, Ji Hongwei, Wu Jinyu

Food and Machinery

Objective: This study aimed to obtain optimal sublimation temperature of pear melon cells. Methods: The pre-freezing cooling rate and vacuum pressure were selected by optimization method to be 25 ℃/min and 10 Pa, respectively, based on cryogenic microscope imaging and vacuum freeze-drying technology. Then, sublimation temperatures of 10, 5, 0, -4, -7 and -10 ℃ were used for experimental research. The morphological parameters (equivalent diameter, area, circumference, volume), internal pressure, and porosity of cells during the process of dehydration and drying were analyzed. Results: As the sublimation temperature rose, the morphological parameters of different dimensions of cells first decreased and …

Subchronic Toxicity Study Of Acesulfame In Rats, Zheng Siyu, Teng Jingjing, Yang Tongjin, Wang Yan, Xia Xin, Bao Junhui

Food and Machinery

Objective： This study aimed to study the subchronic toxicity of acesulfame as a food additive and obtain the dosage of harmful effects not observed orally for 90 d. Methods： According to GB 15193.13—2015, eighty 4-week-old specific pathogen-free （SPF） healthy detached Sprague Dawley （SD） rats （half male and half female） were randomly divided into 4 groups. Rats were administered 4 500, 1 500, 500 and 0.0 mg/kg BW. acesulfame by gavage for 90 consecutive days, respectively. At the end of the experiment, samples of blood were collected for blood routine and biochemical analysis, and some organs were removed for histopathological examinations. …

The Effect Of Ultrasound Assisted Enzymatic Hydrolysis On The Physicochemical Properties And Flavor Characteristics Of Protein Peptides From Harpodon Nehereus, Lu Jianghui, Chen Yuewen, Fu Jingjing, Long Yongjie

Food and Machinery

Objective: This study aimed to solve the problems of low freshness, heavy bitterness, and poor flavor of protein peptides hydrolyzed by enzymes of Harpodon nehereus （HN）. Methods: Ultrasound assisted enzymatic hydrolysis method was used to prepare the HN protein peptides. Papain was selected as the catalyst to study the changes in particle size, hydrolysis degree, soluble peptide content, relative molecular mass distribution, free amino acid content, and electronic tongue flavor signal of the HN protein peptides under different ultrasound power （0, 120, 240, 480, 600 W）. The effect of different ultrasound intensities on the structure and flavor of HN protein …

Determination Of 27 Antiparasitic Drug Residues In Penaeus Vannamei By Liquid Chromatography-Tandem Mass Spectrometry Simultaneously, Zhang Lifang, Ma Ruixin, Zheng Baiqin, Song Wang, Zhou Xin

Food and Machinery

Objective: An ultra-high performance liquid chromatography-tandem mass spectrometry method was established for the simultaneous determination of 27 antiparasitic drug residues in Litopenaeus vannamei. Methods: The solution was used to extract antiparasitic drugs in the samples of L. vannamei. The supernatant after centrifugation was purified by C₁₈ and neutral alumina powder. The sample solution was analyzed by ultra-high performance liquid chromatography-tandem mass spectrometry and applied to the instrument workstation to perform data analysis. A Thermo Hypersil Gold aQ column was used as the separation column, and 0.1% formic acid acetonitrile and 10 mmol/L ammonium formate solution （containing 0.1% formic …

Study On The Integration Model Of Port Clearance In Food Supervision In The Guangdong Hong Kong Macao Greater Bay Area, Zhang Yiming

Food and Machinery

At present, the integration construction of the Guangdong Hong Kong Macao Greater Bay Area is deepening. Among them, the port customs integration model in food supervision in the Guangdong Hong Kong Macao Greater Bay Area has problems such as inconsistent regulatory standards, cumbersome customs clearance procedures, and information asymmetry, which have led to increasingly prominent issues of low food supervision efficiency. In this regard, effective innovation in the integration model of port clearance can be promoted by unifying the food safety supervision standards of Guangdong, Hong Kong, and Macao, constructing an integrated port clearance procedure mechanism, and strengthening information sharing …

Experiments On Sheep Carcass Cutting With Ultrahigh Pressure Pure Water Jet, Qu Yudong, Wei Zhichao, Zhang Di, Su Jixin, Chen Zhengwen, Li Xin

Food and Machinery

Objective: To reduce loss of lamb meat during mechanical cutting. Methods: Using a gantry-type ultra-high-pressure pure water jet cutting platform, different parameters were selected for testing according to different parts of the lamb carcass. Compared the cutting effects, identified the appropriate cutting parameters, and analyzed the cutting losses. Results: The experiments were conducted on several aspects such as room temperature lamb, frozen lamb, lamb chops, lamb spine, lamb legs, lamb neck, and bone removal for meat extraction. The effects of different parts of the lamb carcass and different experimental parameters on the cutting effect were clarified. Conclusion: The adaptability of …