Animal Sciences Commons^™

Improving Public Perceptions Of Dairy Production Through On-Farm Educational Tours, Drew Swartz, Justin Wyatt Clawson, Jaydee Gunnell, Elise Jenson, Dylan Waldron, Jenna Dyckman

Outcomes and Impact Quarterly

Utah dairy producers identified public perceptions as a top concern. Utah State University Extension partnered with Cache County organizations to offer dairy farm tours. Participants reported increased knowledge, more favorable perceptions, and stronger intentions to engage with agriculture, supporting experiential education as a means to strengthen understanding of dairy production.

Cross-Reactivity Of 15 Jev Antigen-Directed Rabbit Antisera With Three Clinically Important Jev Serogroup Members: Wnv, Mvev, And Slev, Sang-Im Yun, Young-Min Lee

Animal, Dairy, and Veterinary Science Faculty Publications

Japanese encephalitis virus (JEV), the prototype member of the JEV serogroup within the genus Orthoflavivirus (family Flaviviridae), is closely related to West Nile virus (WNV), Murray Valley encephalitis virus (MVEV), and St. Louis encephalitis virus (SLEV). To characterize antigenic cross-reactivity within this group, we evaluated 15 region-specific rabbit antisera, previously generated against nearly the entire JEV protein-coding region, by immunoblotting whole-cell lysates from BHK-21 cells infected with WNV, MVEV, or SLEV, with JEV included as a reference. Six antisera (α-E^N-term, α-NS2B, α-NS3^N-term, α-NS3^C-term, α-NS5^N-term, and α-NS5^C-term) robustly recognized homologous …

Lameness In Dairy Cattle: A Practical Overview, Drew Swartz, Kalen Taylor, Jacob Hadfield, Justin Wyatt Clawson

All Current Publications

This fact sheet provides an overview of lameness in dairy cattle, including what it is, why it matters, and how to recognize and manage it. Information is geared toward producers, consultants, and educators.

Three Common Hoof Problems In Dairy Cows: What To Look For And How To Prevent Them, Drew Swartz, Kalen Taylor, Jacob Hadfield, Justin Wyatt Clawson

All Current Publications

This fact sheet covers the three most common hoof lesions in dairy cows and explains why they matter and how to prevent them on your farm.

Digital Dermatitis, Sole Ulcers, And White Line Disease In Dairy Cattle: Pathogens, Diagnosis, And Treatment, Drew Swartz, Kalen Taylor, Jacob Hadfield, Justin Wyatt Clawson

All Current Publications

This fact sheet focuses on three common hoof lesions in dairy cattle: digital dermatitis, sole ulcers, and white line disease, and describes how differences in pathogenesis and risk factors influence diagnosis, prevention, and treatment.

Colostrum Management For Dairy Calves: Key Practices For Calf Health And Performance, Drew Swartz, Jacob Hadfield, Kalen Taylor, Maggi Mathews

All Current Publications

This fact sheet provides practical recommendations for dairy producers to improve colostrum management and support calf health and performance.

Colostrum And Rethinking Passive Transfer In Dairy Calves, Drew Swartz, Kalen Taylor, Maggi Mathews

All Current Publications

This fact sheet provides an overview of colostrum and passive transfer in dairy calves, with information applicable to producers, consultants, educators, and students.

Colostrum Management For Dairy Calves: Technical Guidelines For Consultant Evaluation And Implementation, Drew Swartz, Jacob Hadfield, Kalen Taylor, Maggi Mathews

All Current Publications

This fact sheet provides a technical overview of colostrum management in dairy calves, including evaluation methods and evidence-based recommendations for consultants, educators, and students.

Coenzyme Q10 Improves Functional And Structural Parameters Of Dairy Goat Sperm During Cooling And Cryopreservation, Ranadheer Narlagiri, Abdallah M. Shahat, Courtney Henry, Ashvini Pawar, Niki C. Whitley, Iman B. Shaheed, Mahipal Singh, Brou Kouakou, Irina A. Polejaeva, Adel R. Moawad

Animal, Dairy, and Veterinary Science Faculty Publications

Cryopreservation of gametes is crucial for conserving genetic diversity in livestock and endangered species, but the process can significantly impair sperm quality due to oxidative stress. Our aim was to evaluate the impacts of coenzyme Q10 (CoQ10) supplementation on the in vitro quality of cooled and cryopreserved goat semen. Semen samples collected from six mature Saanen bucks were pooled then diluted with AndroMed^® semen extender to a final concentration of 800 × 10⁶ sperm/mL. Diluted semen was supplemented with 0, 1, 2, 5, 10, and 20 µM CoQ10. Extended semen was either cooled at 4 °C for 72 …

Comparative Assessment Of Growth And Morphometric Characteristics In Naked Neck, Rhode Island Red, And Black Australorp Chickens, Naseer Ahmad, Sarzamin Khan, Rafi Ullah, Kamran Khan

Journal of Bioresource Management

This study investigated growth performance and morphometric characteristics in three chicken genotypes namely Naked Neck (NN), Rhode Island Red (RIR), and Black Australorp (BAL). One-hundred and eighty chicks (age, day-old), comprising 60 birds from each genotype, were distributed randomly into three replicates per group, with 20 chicks per replicate, under a completely randomized design. Birds were reared on deep litter for 18 weeks. Hatch weights were significantly higher (P < 0.05) in BAL (30.7 g) and RIR (30.2 g) compared to NN (28.2 g). Body weights showed no significant differences (P > 0.05) from weeks 2 to 4, but BAL and RIR outperformed NN (P < 0.05) from weeks 6 to 10. BAL maintained the highest body weight from weeks 12 to 18 (P < 0.05). Total weight gain (0-18 weeks) was significantly greater in BAL (1567 g), followed by RIR (1491 g) and NN (1219 g). The genotypes had significant effects on both feed intake and feed conversion ratio (FCR; P < 0.05). At 18 weeks of age, FCR was most efficient in BAL (3.53), followed by RIR (3.83), and NN (4.85). Mortality between weeks 4 and 18 was lowest in NN at 1.7 %, compared with 1.81 % in RIR and 1.84 % in BAL. Significant differences (P < 0.05) among genotypes were also observed in morphometric characters such as shank length, keel length, and breast circumference, with BAL generally showing larger measurements. In conclusion, BAL exhibited superior growth, feed efficiency, and morphometric characteristics, while NN demonstrated lower weight gain but better survivability, highlighting genotype-specific advantages for different production goals.

Comparative Morphometric Study Of Saanen And Indigenous Goats, In Northern Pakistan, Nadar Khan, Ihsan Uddin, Sohail Khan, Hayat Ullah Khan, Muhammad Suleman

Journal of Bioresource Management

Goats play an essential role in sustaining rural communities in Pakistan by providing milk, meat, and income under diverse production systems. This study compared the morphometric features of exotic Saanen goats with local breeds (Beetal, Kaghani, Gaddi, and non-descriptive) in Swat, northern Khyber Pakhtunkhwa, to evaluate growth patterns, body structure, and the potential for body weight estimation. A total of 500 animals were sampled from research stations and smallholder farms, with morphometric and qualitative traits recorded following FAO guidelines. Distinct differences among breeds were observed. Beetal goats exhibited the highest body weight (58.2 ± 2.0 kg), chest girth, and body …

Beta-Casomorphin7 Detection In Milk From Dairy Species And Beta-Casein Protein Characterization In Cattle From Selected Provinces In The Philippines, Angelo M. Tapia, Maria Cynthia R. Oliveros, Queennie Hope D. Umipon, Hazel Marie E. Nicolas, Naoya Ogawa, Yasuyuki Kitaura

The Philippine Agricultural Scientist

This study was conducted to detect β-casomorphin7 (BCM7) in dairy animals and to characterize the β-casein (CSN2) genotype among dairy cattle breeds in the Philippines. A total of 59 dairy animals, composed of 35 cattle (12 Holstein Sahiwal [HS16 Jersey × Holstein Friesian [JHF], and 7 Siquijor Native Cattle [SNC]), 15 buffaloes (Bulgarian Murrah and Brazilian Murrah), and 9 goats (Saanen and Anglo-Nubian) were collected with milk samples. Milk protein was extracted and subjected to high-performance liquid chromatography–tandem mass spectrometry (HPLC–MS/MS) analysis after stimulated gastrointestinal digestion. BCM7 was detected in cattle with an average concentration of 0.322 + 0.080, whereas …

Beta-Casomorphin7 Detection In Milk From Dairy Species And Beta-Casein Protein Characterization In Cattle From Selected Provinces In The Philippines, Angelo M. Tapia, Cynthia R. Oliveros Maria, Queennie Hope D. Umipon, Hazel Marie E. Nicolas, Naoya Ogawa, Yasuyuki Kitaura

The Philippine Agricultural Scientist

This study was conducted to detect β-casomorphin7 (BCM7) in dairy animals and to characterize the β-casein (CSN2) genotype among dairy cattle breeds in the Philippines. A total of 59 dairy animals, composed of 35 cattle (12 Holstein Sahiwal [HS16 Jersey × Holstein Friesian [JHF], and 7 Siquijor Native Cattle [SNC]), 15 buffaloes (Bulgarian Murrah and Brazilian Murrah), and 9 goats (Saanen and Anglo-Nubian) were collected with milk samples. Milk protein was extracted and subjected to high-performance liquid chromatography–tandem mass spectrometry (HPLC–MS/MS) analysis after stimulated gastrointestinal digestion. BCM7 was detected in cattle with an average concentration of 0.322 + 0.080, whereas …

A Bovine Cell Line Resistant To Japanese Encephalitis Virus Entry But Permissive To Post-Entry Replication, Sang-Im Yun, Young-Min Lee

Animal, Dairy, and Veterinary Science Faculty Publications

Japanese encephalitis virus (JEV) is a mosquito-borne zoonotic orthoflavivirus that poses a significant global health threat. It causes severe neuroinflammatory disease in humans and reproductive failure in swine. Because of the broad host range and cell tropism of JEV, identifying animal cell lines resistant to infection has been a persistent challenge. In this study, we demonstrate that Madin–Darby bovine kidney (MDBK) cells are resistant to JEV infection yet remain fully permissive to viral replication when transfected with viral genomic RNA. Using immunoblotting, immunofluorescence, and flow cytometry, we show that MDBK cells, unlike the highly susceptible baby hamster kidney (BHK-21) cells …

Nighttime Or Daytime? How Milk Melatonin Levels Relate To Differential And Somatic Cell Count In Dairy Cow Milk, Eleonora Dall'olio, Claudio Cipolat-Gotet, Melania Andrani, Valeria Cavalli, Giovanni Ferri, Mario Baratta, Roberta Saleri, Fabio De Rensis

The Thai Journal of Veterinary Medicine

This study investigates the impact of winter nighttime versus daytime milking on melatonin concentration in milk and explores its relationship with somatic cell count (SCC) and differential somatic cell count (DSCC). Milk samples were collected from 40 Holstein cows at 12-hour intervals (04:00 AM Night samples and 04:00 PM Day samples) during the winter season (11 h of light and 13 h of darkness). The relationship between melatonin content, SCC and DSCC was assessed. Night milk had significantly higher melatonin levels (15.63 ± 1.90 pg/mL) compared to day milk (6.80 ± 0.75 pg/mL). SCC was significantly lower in night milk …

Effect Of The Ahr Inhibitor Ch223191 As An Adjunct Treatment For Mammarenavirus Infections, Miguel Angel Pelaez, Jonna B. Westover, Dionna Scharton, Cybele Carina García, Brian B. Gowen

Animal, Dairy, and Veterinary Science Faculty Publications

The family Arenaviridae encompasses zoonotic, rodent-borne pathogens (e.g., Lassa, Machupo, and Junín viruses) that cause severe viral hemorrhagic fevers with high case fatality rates. The current therapeutic landscape is severely limited, underscoring the urgent need for novel antiviral strategies. A promising approach involves combining directly acting antivirals with host-targeted antivirals. A compelling host-targeted antiviral target is the aryl hydrocarbon receptor (AHR). This ubiquitous ligand-activated transcription factor is a recognized pro-viral host factor across multiple viral families. Building on prior work with Junín and Tacaribe viruses, we investigated whether the AHR inhibitor CH223191 could enhance the virus-directed antiviral activity of favipiravir …

Genetic Determinants Associated With Persistence Of Listeria Species And Background Microflora From A Dairy Processing Environment, Vaishali Poswal, Sanjeev Anand, Jose L. Gonzalez-Hernandez, Brian Kraus

Dairy Science and Food Science Faculty Publications: 2022 to Present

Listeria monocytogenes is a persistent foodborne pathogen capable of surviving in food processing environments, often in association with diverse environmental microflora. This study examines genomic determinants of persistence, specifically stress adaptation and biofilm-associated traits, in environmental Listeria species and other environmental microflora from a dairy processing facility by analyzing whole-genome sequences of 6 environmental Listeria isolates, 4 ATCC reference strains, and 22 air and floor swab cultures, annotated using the RAST platform. Subsystem analysis revealed that Listeria isolates carried a defined set of genes linked to biofilm formation, antimicrobial resistance, and stress response, though in lower abundance than environmental cultures. …

Design And Fabrication Of A Scaled Automated Dairy Farm Model: A Report, Md Towfiqur Rahman

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Summary

This study investigates how ventilation systems work in dairy barns and builds a scaled model to support education and research. The project is designed to help students from the University of Nebraska–Lincoln (UNL), K-12 learners, and researchers in animal science, veterinary medicine, and engineering gain visual experience with dairy facility components and processes. Different ventilation methods were studied, leading to the design of a 1/64-scale tunnel-ventilated dairy barn meant for 60 Holstein Friesian cows. Barn dimensions were set based on real Holstein cow measurements to ensure proper cow comfort, while airflow requirements were calculated and scaled down. Miniature fans …

Exploring The Association Between Internal Body Temperature And Metabolic Status In Early Lactation Jersey Cattle, Alexandra Ferreri, Claira Seely

Honors Theses and Capstones

No abstract provided.

Crab And Lobster Shell Meal Taste Preferences Of Dairy Heifer Calves, Summer R. Pescinski, Peter S. Erickson

Honors Theses and Capstones

Objective: This preference study was conducted to evaluate the palatability of crab shell meal (CM) and lobster shell meal (LM) when added to calf starter for post-weaned dairy heifer calves.

Materials and methods: Six calves were used for a sequential elimination experiment to rank their taste preferences when offered control calf starter, calf starter mixed with 50 g of CM, and calf starter mixed with 50 g of LM.  The calves were kept on the study for a total of 5-d split into two feeding segments.  Preference was determined by calculating the total intake of each treatment …

Evaluating The Use Of Precision Technology To Understand Differences Between Ketotic And Non-Ketotic Jersey Cows, Emily Kathryn Palermo

Honors Theses and Capstones

No abstract provided.

Serum Concentrations Of Inflammatory Markers And Selected Nutrient Metabolites In Holstein And Jersey Cows Across The Transition Period, Avery Orr

Master's Theses

The transition period, spanning the weeks surrounding parturition, requires dairy cows to undergo synchronized metabolic, endocrine, and immunological adjustments that support the onset of lactation but also heighten disease susceptibility. Although individual inflammatory or metabolic biomarkers have been extensively studied, the integrated immunometabolic dynamics that occur across this period and the difference between breeds is not fully understood. The objective of this study was to characterize longitudinal patterns in key nutrient metabolites and inflammatory markers in Holstein and Jersey cows and assess how these systems interact across the transition period.

A total of 63 Holstein and Jersey cows were sampled …

Climate And Non-Genetic Effects On Goat Milk Quality And Casein Prediction Using Machine Learning, Ibrahima Mahamane Abdourhamane, Dilek Arsoy

The Thai Journal of Veterinary Medicine

Milk quality is becoming more and more crucial for farmers with the increasing use of component-based pricing systems in the sector. This study aimed to investigate the effects of climate-related and non-genetic factors on goat milk quality on the island of Northern Cyprus and to predict casein content using machine learning techniques. An analysis was performed on 21,695 goat milk samples collected between 2012 and 2018. Somatic cell count (SCC), standard plate count (SPC), and key milk components such as protein, casein, lactose, and fat were evaluated for different seasons, regions, farm sizes, and raw milk types. Five machine learning …

Enhancing The Biopreservative Effect Of Non-Starter Lactic Acid Bacteria Using Soluble Fiber During Cheese Ripening, Rakesh Kaushik, Sanjeev Anand

Dairy Science and Food Science Faculty Publications: 2022 to Present

Cheddar cheese ripening creates favorable conditions for desired microbial changes but also allows survival and outgrowth of spores like Clostridium tyrobutyricum and Bacillus licheniformis, leading to late-blowing defects. In the first phase of the study, NSLAB dynamics were evaluated in the presence of spores, where pilot-scale cheeses (110 L) were produced in four treatments: control, T1 (BL), T2 (CT), and T3 (BL+CT), each inoculated at 2.0 Log10 CFU/mL with spores. Results showed that SLAB declined from 8.0 to 0.2 Log10 CFU/g, while NSLAB increased from 2.0 to 8.5 Log10 CFU/g by the third month and remained stable thereafter. Spore counts …

Dairy And Food Science News, Nov 2025, Department Of Dairy And Food Science

Dairy & Food Science News

Message from the Department Head
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Dairy and Food Science Department in the Media
Education abroad program to India - Food and Agriculture Processing: India SDSU Fall 2026
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Milk Yield Performance Of Local Cows, Handling Practices, Physicochemical Properties, And Milk Production Constraints In Kucha District, Southern Ethiopia, Demissie Jorge, Seifu Birhanu, Yilkal Tadele

The Thai Journal of Veterinary Medicine

The study assessed milk production performance of local cows, milk handling practices, physicochemical properties, and milk production constraints in Kucha District, Southern Ethiopia. A purposive and random sampling technique was employed to select 138 respondents for the interview. For physicochemical property assessment, milk samples were collected from 90 interviewed households. Majorities (76.7%) of the respondents were males, and the average family size was 6.82±0.25. Mean daily milk yield (DMY) of 1.80±0.07, 1.94±0.06, and 1.52±0.09 liters was recorded for local cows, respectively, in early, mid, and late lactation stages. All respondents in the area use hand milking and wash their hands …

Cattle Funding Scheme 2023-24 Annual Report, Department Of Primary Industries And Regional Development, Western Australia

Biosecurity published reports

I am pleased to present the 2023-24 annual report for the Cattle Industry Funding Scheme (Cattle IFS) to our participants, key stakeholders in the Western Australian (WA) cattle industry, and the Minister for Agriculture and Food. This financial year has brought its share of challenges to the WA cattle industry including domestic and global markets, dry weather conditions and high biosecurity concerns. With Foot-and-mouth disease (FMD) and Lumpy Skin Disease (LSD) detected in Indonesia, biosecurity threats remain ever-present. As a result, maintaining the health of our herd in WA continues to be our top priority. The Cattle IFS continues to …

Dairy And Food Science Student Newsletter, September 4, 2025, Department Of Dairy And Food Science

Dairy and Food Science Student Newsletter

No abstract provided.

Dairy And Food Science News, Sept 2025, Department Of Dairy And Food Science

Dairy & Food Science News

Message from the Department Head
Dairy Drive Football Game
Dairy Foods Research @SDSU: Opportunities Galore Webinar
Faculty Updates
Faculty Surveys and Studies
Recruitment Updates & Opportunities
2025 Burger Bash
Meet our Jacks
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Using Automated Activity Monitoring To Detect Resumption Of Cyclicity In Early Lactation—Meta-Analysis, S. Borchardt, T.A. Burnett, T.C. Bruinjé, A.M.L. Madureira

Dairy Science and Food Science Faculty Publications: 2022 to Present

This meta-analysis aimed to evaluate the efficacy of automated activity monitoring (AAM) in detecting estrous expression and ovulatory status in cows during the voluntary waiting period (VWP). A comprehensive literature search was conducted in PubMed, ScienceDirect, and Google Scholar using specific search terms. Inclusion criteria focused on studies that assessed estrous expression within the VWP using modern AAM systems alongside blood progesterone (P4) measurements. Four manuscripts involving 2,198 cows were included. Data extraction was performed by a single investigator and validated by a coauthor. The analysis considered estrous expression and ovulatory status determined through serial blood P4 measurements. Cows were …