Digital Commons Network^™

Effects Of Addition Of Somatic Cells To Caprine Milk On Cheese Quality, D. Sánchez-Macías, A. Morales-Delanuez, A. Torres, L. E. Hernández-Castellano, R. Jiménez-Flores, N Castro, A. Argüello

Dairy Science

Milk quality criteria and limits for somatic cell count (SCC) established in many countries make it difficult to maintain SCC of bulk tank goat milk below the threshold, due to non-infection factors linked to goat physiology. The aim of this study was to objectively verify the effects of SCC on fresh caprine milk cheese. Somatic cells were recovered from pooled healthy goat milk, and added to low SCC raw or pasteurised goat milk. Miniature cheeses were made and evaluated after 1 and 7 d. Somatic cells had a major effect on lipolysis, increasing free fatty acids regardless of whether milk …

Engineering Advantage, Spring 2013, College Of Engineering

Engineering Advantage

No abstract provided.

Judging Market Goats, Matthew M. Marshall

Agricultural Education and Communication

The purpose of this project was to develop a judging guide for FFA members who participate in Livestock Judging Contests. One of the classes to be judged is Boer goat market wethers. Resources from breeders, industry judges, and handouts were utilized. The PowerPoint that was created can be used as a tool for students to learn the basics of market goat judging. This can also be a useful guide for students who are interested in selecting market goats as a supervised agricultural experience project.

The Forum, Vol. 5, Issue 1, Cal Poly History Department

The Forum: Journal of History

No abstract provided.

A Study Of Escherichia Coli Presence In Viscera Before And After Anaerobic Composting, Grant M. Williams

Natural Resources Management and Environmental Sciences

Anaerobic composting may be a way to eradicate Escherichia coli (E. coli) in viscera from cattle. The presence of potentially harmful E. coli would account for one of the reasons that viscera by law cannot currently be disposed of on a ranch premises. Investigating this to find whether E. coli could be eradicated through this process could reduce inconvenience for ranchers to have local slaughters in California and would be more sustainable as more nutrients would return to the ranch land. This study was done by using E. coli inoculated viscera, which was then put it into Bokashicycle anaerobic composting …

City Of Clearlake: 2040 General Plan Update Fall 2012/ Winter 2013, Crp 552/ 554 Community And Regional Planning Studio

City and Regional Planning Studios and Projects

This document was produced for the City of Clearlake, CA as part of the Clearlake General Plan Update by the 2012-2013 Community and Regional Planning Studio of the Master of City and Regional Planning Program at the California Polytechnic State University, San Luis Obispo California.

Rna Sequencing To Study Gene Expression And Single Nucleotide Polymorphism Variation Associated With Citrate Content In Cow Milk, A. Cánovas, G. Rincón, A. Islas-Trejo, R. Jiménez-Flores, A. Laubscher, J. F. Medrano

Dairy Science

The technological properties of milk have significant importance for the dairy industry. Citrate, a normal constituent of milk, forms one of the main buffer systems that regulate the equilibrium between Ca2+ and H+ ions. Higher-than-normal citrate content is associated with poor coagulation properties of milk. To identify the genes responsible for the variation of citrate content in milk in dairy cattle, the metabolic steps involved in citrate and fatty acid synthesis pathways in ruminant mammary tissue using RNA sequencing were studied. Genetic markers that could influence milk citrate content in Holstein cows were used in a marker-trait association study to …

On The Art And Practice Of Urban Design, John Decker

Focus

No abstract provided.

Planning For A Strategic Guadalajara: Towards A Sustainable And Competitive Metropolis, Francisco Perez

Focus

No abstract provided.

Cal Poly Goat Program, Lauren Christensen

Animal Science

The Cal Poly Goat Program was established in the Summer of 2012 to provide vegetation management services on the Cal Poly campus and to allow students to gain hands on experience with goats. Student interest in adding goats as an additional species in the Animal Science Department spurred the realization and development of the program. The department also experienced demand for goats to use for vegetation management at the animal units and around various facilities on campus. The Goat Program integrates Cal Poly’s hands-on, ‘Learn by Doing’ philosophy with sustainable management practices to serve the needs of students as well …

A Sense Of Community, Matt Lazier

Cal Poly Magazine

No abstract provided.

Close To The Action, Rachel Henry

Cal Poly Magazine

No abstract provided.

Academic Senate - Agenda, 3/12/2013, Academic Senate

Academic Senate Agendas

No abstract provided.

Genes In Genesis: Evolutionary Psychology And The Bible As Literature, Steven Marx

English

No abstract provided.

Cpe 200: Small Bear Project, David Burke, Devin Tang

Computer Engineering

CPE 200 is an elective course designed for sophomores in the Computer Engineering Department. This project was intended to design the class, such that, students will understand the skills a computer engineer develops and how to apply those skills.

A Comparison Of Relative Ear Length Between Two Neighboring Populations Of Peromyscus Maniculatus, Joshua S. Willems

Biological Sciences

This study attempts to determine if a significant difference in relative ear length exists between two neighboring populations of Peromyscus maniculatus on the central coast of California. Data was collected from individuals trapped at two plots in the Guadalupe-Nipomo Dunes National Wildlife Refuge and two plots near Black Lake, under the supervision of Francis X. Villablanca, Ph. D. of California Polytechnic State University, San Luis Obispo. A total of 98 individuals were captured over the course of three nights of trapping. A regression analysis was performed comparing the ear lengths of each population relative to body size. The analysis of …

Sire Evaluation For Milking Duration, James Macedo

Dairy Science

The objective of this study was to utilize electronically recorded data from on-farm milk recording systems and herd management software to determine if a sire has a genetic influence on his daughter’s milking duration. Measurements of milking duration from three dairy facilities were taken between January 27, 2013 and January 31, 2013. These measurements supplied 25,070 observations, corresponding to 9,418 cows and 895 sires. These data were evaluated with a SAS alongside a herd-mate comparison. The statistical analysis demonstrated that a sire does have a genetic influence on the milking duration of his progeny. The Van Beek Brothers and Dairyland …

Development Of A Nonfat Drinkable Yogurt For The Cal Poly Creamery, Timothy Voros

Dairy Science

No abstract provided.

Gas Emissions And Olfactometry For Dairy Heifers, Rebecca Gary

Dairy Science

The objective of this study was to determine any trends in odor evaluations and gas emissions of manure samples in heifers fed high/low concentrate and high/low forage diets. Heifers (n = 8) were enrolled randomly in a split plot design with diet type (high concentrate vs. low concentrate) as the whole plot and forage quality (4 different levels of corn stover within each diet type) as sub-plots in a 4-period (21d) 4X4 Latin square design. Total collection of urine and feces was performed on days 18-21 of each period. The feces to urine ratio (F:U) was determined on days 18 …

Review And Cost Analysis Of Reverse Osmosis And Ultrafiltration, Jared De Groot

Dairy Science

The aim in this study was to determine whether implementing an on farm ultrafiltration system was profitable. Ultrafiltration was researched to reduce the amount of milk hauled from producer to processor. An ultrafiltration system involved milk that flowed through a semi-permeable membrane. Through this process water and small amounts of calcium and ash were pressured through the semi-permeable membrane. This permeate would then be able to feed heifers. The protein, fat, solids nonfat, and small amounts of calcium and ash were retained by the membrane. Through the process of ultrafiltration, raw milk was concentrated to three times its original concentration. …

Development Of A Training Program For The Cal Poly Creamery, Rachel Souerbry

Dairy Science

No abstract provided.

Milking Jersey’S Vs. Holstein’S On A Commercial Dairy In California: Milk Production, Feed Efficiency, Intake, Costs, And Advantages., Garret Te Velde

Dairy Science

In this study, data from six Holstein dairies in California and four Jersey dairies were examined. Dairies were compared on 3.5% energy corrected milk, feed intakes, feed efficiency, feed costs per milking cow, and feed costs per hundred weight. Both Holstein and Jersey dairies had information taken from the months of September and May to observe the effects of weather on production and feed intakes, and so credible data could be determined for the year of 2012. For milk production the six Holstein herds produced an average of 70.925 lbs of energy corrected milk, while the four Jersey herds produced …

The Promotion And Scale Of Specialty Dairy Products In The United States, Lindsey Mendes

Dairy Science

The objective of this paper is to determine the growth and future scale of artisan dairy products. The purpose of this paper is to analyze why there has been such a great demand for artisan dairy products, how they are produced, and the promotion and scale of the specialty dairy industry product production.

The review begins with a brief discussion on the different terms used for specialty dairy products. Followed by the introduction is history of the dairy industry and its growth and change over many, many years. Dairy products have been around longer than they have actually been recorded. …

Pasteurization And Freezing Effect On Colostrum Characteristics, Morbidity, Igg Absorption, And Growth Rates Of Holstein Heifer Calves, Rob Diepersloot

Dairy Science

The objective of this study was to determine if fresh frozen, pasteurized frozen, or fresh refrigerated colostrum impacted morbidity, growth rates, and the overall serum immunoglobulins (IgGs) in newborn calves. The second objective was to compare the effects that pasteurization and freezing had on colostrum IgG concentration and total bacteria counts compared to raw refrigerated colostrum. A controlled trial was completed on a 6,000-cow dairy in California where colostrum was harvested twice daily, pooled, and then divided into three different treatment groups and processed accordingly. One treatment was pasteurized at 60^oC for 60 min and then frozen, the …

Effects On Jerseys And Holsteins, Milk Production, Intake, And Feed Efficiency, Michael Areias

Dairy Science

The objective of this literature review was to determine if it is more efficient and cost effective to use Jerseys instead of Holsteins for milk composition and production. In respect to the animals Dry Matter Intake (DMI), and its environmental impact. To research if you can make more money per animal with less ground, less input, and less production with a certain much smaller breed, such as Jerseys. This paper reviewed important aspects of the two breeds that are relevant and practical to producers. The ideas and opinions presented in the paper are a result of a review of the …

Detecting Errors In Generating A Certificate Of Analysis, Breanne Harlan

Dairy Science

Many companies rely on a Certificate of Analysis (COA) to accompany the delivery of their product or material. The COA, required by law, prevents customers from questioning whether a product is safe and ensures manufacturers confirm every product tested passes the Food and Drug Administration’s required specifications. Previous to this project, Kraft Foods Springfield copied their test results for each product from their data warehouse software, called Systems, Applications, and Products onto a Word document to create a COA. This was a systematic approach to detect the possible occurrences of error and reduce the time spent on generating a COA. …

Milking Protocols At The Cal Poly Dairy Farm, Kevin Mohan

Dairy Science

Milking parlors are the center of a dairy operation and directly responsible for its profits, yet dairy training is frequently neglected and often lackluster. The Cal Poly dairy farm, despite having a milker pool that is comparatively inexperienced with farm labor has no written manual for training of milkers. This results in a workplace that in the event of an accident or point of confusion leaves workers nowhere to turn to for clarification save contacting a supervisor directly. It also may also result in a lack of established guidelines, and a frequent need for clarification due to misunderstood expectations and …

A Review Of The History And Motivations Of Animal Identification And The Different Methods Of Animal Identification Focusing On Radiofrequency Identification And How It Works For The Development Of A Radiofrequency Identification Based Herd Management System On The Cal Poly Dairy, Manuel Silveira

Dairy Science

My objective for this senior project was to perform an extensive review of literature on the history of animal identification and common motivations for identifying livestock, the different types and methods of identifying animals, with a special focus on radiofrequency identification technology (RFID) and how it works. A secondary objective was creating an instructional booklet for the implementation of a RFID based management system on the Cal Poly dairy. The identification of livestock for management or disease traceability has been a practice in one form or another for centuries (Blancou, 2001). Today, animal identification is of great importance to herd …

The Analysis And Comparison Of Organic Dairy Operations And Conventional Dairy Operations In Terms Of Milk Quality, Animal Health, Nutrition, Market Aspects And Economic Benefits, Lianne Michele Nunes

Dairy Science

The dairy industry in California has two very vital sectors that make up the production and marketing landscape: Organic and Conventional dairy production systems. The objective of this review of literature is to explore the differences and contrasting views of milk quality, reproduction, animal health, nutrition, market aspects and pricing systems within each industry and determine how each industry has the potential for tremendous success among its producers. It is important to understand the aspects of each industry because of the advantages and disadvantages each industry imposes on different producers located all around the state. Organic production systems have very …

Portable Hammock Stand Design And Business Model Development, Evan Keith

Industrial Technology and Packaging

Currently hammocks are thought of as stationary relaxation devices that use tress as support structures. The industry mainly focuses on hammock innovation over the way in which the hammock is actually hung. Having been around for thousands of years, reinventing the idea of the hammock is not something that is occurring or has been thought of.

This senior project proposes the idea of a portable or more adaptable hammock stand. It takes the idea of hammocks as stationary devices to them being something that can be taken almost anywhere. Shifting how hammocks are thought of and exposing the potential they …