Dairy Science Commons^™

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
Holiday Cheese Boxes
We are Hiring
Dairy and Food Science Department in the Media
Education abroad program to India - Food and Agriculture Processing: India SDSU Fall 2026
Faculty Updates
Surveys and Studies
Recruitment Updates and Opportunities
SDSU Company Student Recruitment
Student Updates
Alumni Spotlight
Events and Calendar

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
Student Updates
2025 Eminent Leader in Agriculture, Family and Community
Events & Calendar

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 …

Dairy And Food Science Student Newsletter, August 28, 2025, Department Of Dairy And Food Science

Dairy and Food Science Student Newsletter

No abstract provided.

Dairy And Food Science Student Newsletter, August 8, 2025, Department Of Dairy And Food Science

Dairy and Food Science Student Newsletter

No abstract provided.

Homologous And Heterologous Vaccination Regimens With Mrna And Rvsv Platforms Induce Potent Immune Responses Against Sftsv Glycoprotein, Tomaz B. Manzoni, Jonna B. Westover, Kendall A. Lundgreen, Philip D. Hicks, Raegan J. Petch, Jordan T. Ort, Drew Weissman, Steven H. Y. Fan, Scott E. Hensley, Norbert Pardi, Brian B. Gowen, Paul Bates

Animal, Dairy, and Veterinary Science Faculty Publications

Background: Severe fever with thrombocytopenia syndrome virus (SFTSV) is a highly pathogenic bunyavirus with a high case-fatality ratio for which there is no approved vaccine. Studies have assessed different vaccine technologies. However, few studies have yet assessed the immunogenicity of heterologous prime-boost regimens. Methods: Here, we compare a lipid nanoparticle (LNP)-encapsulated nucleoside-modified mRNA-based vaccine encoding the SFTSV glycoproteins, Gn and Gc, to our recently described recombinant VSV SFTSV (rVSV-SFTSV) vaccine in single dose, homologous, and heterologous prime-boost regimens in mice. Results: We show that all regimens protect from pathogenic SFTSV challenge and elicit strong long-lasting antibody responses. Furthermore, strong cellular …

Evaluating The Effectiveness Of Individual Cleaning Steps Of A Cip Protocol In Membrane Biofilm Removal Under Dynamic Conditions, Diwaker Singh, Sanjeev Anand

Dairy Science and Food Science Faculty Publications: 2022 to Present

This study evaluated the effectiveness of individual clean-in-place (CIP) steps in removing biofilms from reverse osmosis (RO) membranes under dynamic flow conditions using the Centers for Disease Control (CDC) biofilm reactor. Biofilms were developed in the laboratory under continuous flow, using mixed-species bacterial isolates obtained from 10-month-old RO membrane biofilms from a commercial facility. Individual CIP chemicals, representative of those used in commercial protocols, were tested against 24 h-old biofilms. Additionally, a complete six-step sequential CIP process was conducted under dynamic conditions, consisting of treatments with alkali, surfactant, acid, enzyme, a secondary surfactant, and sanitizer. All experiments were performed in …

The Effect Of Diet Formulations Containing Different Protein Sources On Energy And Nitrogen Utilization In Lactating Jersey Cows, Kortney Ann Harpestad

Department of Animal Science: Dissertations, Theses, and Student Research

It is well understood that lactating dairy cows require metabolizable protein (MP) for milk yield and milk protein synthesis. Diets with conventional feed sources like corn and soybean meal (SBM) may not sufficiently meet all MP and amino acid (AA) requirements so supplementation with more rumen undegradable protein (RUP) rich feeds or rumen-protected AA can be fed to support animal performance. The growth trajectory of biofuels has resulted in dramatic increases in the production of feeds like heat treated soybean meal (HTSBM). While the chemical composition of this product is understood, there is a need to better understand how HTSBM …

Studying The Population Dynamics Of Nslab And Their Influence On Spores During Cheese Ripening, Rakesh Kaushik, Sanjeev Anand

Dairy Science and Food Science Faculty Publications: 2022 to Present

Cheese ripening involves microbial changes, with starter lactic acid bacteria (SLAB) initiat- ing fermentation and nonstarter lactic acid bacteria (NSLAB) driving flavor and texture development. However, heat-resistant spores of Clostridium and Bacillus can survive pas- teurization and cause spoilage during ripening. This study evaluated NSLAB dynamics in the presence of spores during cheese ripening. Cheddar cheese samples at pilot-scale level (110 L) with four treatments, namely control, with spores of B. licheniformis (T1), with spores of Cl. tyrobutyricum (T2), and both spores (T3) at 2.0 Log10 CFU/mL, were ripened at 7 ◦C for six months. SLAB declined from 8.0 to …

2025 Nebraska Custom Rates For Livestock-Related Agricultural Services, Glennis Mcclure

Cornhusker Economics

Conclusion

The 2025 livestock custom rates report serves as a valuable reference for cost benchmarking and service pricing in Nebraska’s livestock sector. While most rates have remained stable, producers and service providers should refer to multiple years’ reports to understand trends and regional variation. As always, actual service rates will vary based on job complexity, geographic location, provider availability, and market demand.

Participation in Future Surveys

To strengthen future reports, producers and service providers are encouraged to participate in upcoming surveys. Interested individuals may register at the following URL: https://cap.unl.edu/nebraska-custom-rates-survey-sign

The 2025 Custom Service Rates Related to Livestock Production in …

One Health Interventions And Challenges Under Rural African Smallholder Farmer Settings: A Scoping Review, Evanson R. Omuse, Honest Machekano, Bonoukpoè M. Sokame, Daniel M. Mutyambai, Thomas Dubois, Sevgan Subramanian, Frank Chidawanyika

All Peer-Reviewed Publications

The global human population is rapidly increasing, escalating interactions of people, animals and the environment. This has led to more convoluted health challenges, for which African smallholder farmers bear the brunt. The One Health (OH) approach recognises the interconnectedness of these health challenges and thus follows a transdisciplinary approach involving diverse stakeholders to address them. Although there have recently been global concerted efforts and studies on OH, an information gap exists in Africa, particularly regarding smallholder farmers and their needs. Additionally, evaluation frameworks and outcome metrics for OH initiatives are still unclear. Thus, this study was conducted to critically map …

Tube-Feeding A Calf, Cheyenne Reid, Reganne K. Briggs, Melanie Heaton, Rebekah Esplin, David Secrist

All Current Publications

Producers may need to tube-feed a newborn calf to provide milk if calves are unable to nurse or suck from the nipple bottle or when calves are sick and need electrolytes. This fact sheet outlines the materials required and the steps to successfully tube-feed a calf.