Digital Commons Network^™

The Effect Of Days In The Close Up Pen On 60 Day Cull Rates And Milk Production In The Subsequent Lactation, Hudson Hanlon

Dairy Science

The transition period is one of the most important times in a cows life. Cows during this period are susceptible to many kinds of health problems that are related to the time of calving. These metabolic disorders can have a large impact on the beginning milk yields of dairy cows. This study was done to see if the amount of days in the close up pen has a large effect on milk yield after calving. Five Holstein dairy herds in the California Central Valley were used for this study. Residence time in close up pen was recorded for all cows. …

A History, Description, And Comparison Of Different Brands Of Dairy Parlor Equipment And Which Designs Are The Best Fit For Different Sized Dairy Operations, Madison Mamie Goulart

Dairy Science

There are many different designs and brands of dairy parlor equipment made available to producers, and new technologies are continuing to be developed in order to reduce the amount of labor and work time needed on dairy operations. The introduction of new technologies to the dairy industry, such as automatic milking systems which have utilized the application of robot arms to accomplish a milking, have changed the way the dairy industry looks at production and how milk should be produced.

The motivation of this report is to look into the history and development of milking machines that have lead to …

A Recommendation For The California Dairy System Reform Based On A Comparative Study Of Dairy Market Structuring And Pricing Systems Of Seven Leading Dairy Industries In 2014., Meredith Frisius

Dairy Science

No abstract provided.

The Effect Of Feeding Calves Milk Replacer 2x, 3x, Or Pasteurized Milk, James Weber

Dairy Science

No abstract provided.

Best Management Practices For Raising Dairy Calves From Birth To Weaning, Alexa Cabral

Dairy Science

There are many different ways to raise calves on dairy farms in the United States. The way calves are raised can depend on the resources, natural environment and operation of the farm. There is no right or wrong way to raise calves. However, the aim of raising calves is to find the best way to raise a healthy calf so that she will become a productive cow. The objective of this literature review was to determine the ideal management practices for raising a healthy calf from birth to weaning. This literature analyzed numerous articles that covered all aspects of calf …

Preparing Samples Of Rancid Milk For Milk Judging Contests, Danielle Li

Dairy Science

Due to the growing concern of raw milk, there is a growing need for other methods of preparing rancid milk for milk judging. The origin of rancidity in milk is due to lipolysis caused the lipase enzyme. However, with pasteurization, the lipase enzyme is inactivated. The purpose of this experiment was to compare the effect of using lipase powder to other current methods of preparing rancid milk, such as utilizing raw milk. Result showed that all treatments caused desired rancidity. The second purpose was to compare the rancidity between Method A, two to three hour incubation at room temperature, and …

Development Of Applied Standard Operating Procedures And Monitoring Practices, Nick Southfield

Dairy Science

Development of a standard operating procedure program for Southfield Dairy was chosen in order to improve the work environment and animal health with an underlying goal to improve profitability. Critical control points for the milk barns, maternity barn and calf barn on the dairy, were identified as being critical to the production of quality milk, both for sale and calf feed. Data recording implementation through identification of recordable data, equipment purchases, and log sheet production, was done so to increase relevant information available for veterinary services and specialty consultants. Implementation of procedural documents and training programs are discussed to see …

A Literature Review On Injection-Site Lesions In Dairy Cows And Culling Decisions, Eric B. Parsons

Dairy Science

Currently dairy producers face particular problems concerning their culled cows and bulls, these problems must be addressed so dairy producers have the opportunity to improve the quality of beef produced from their cull dairy cows. At the moment, not much is known about culling decisions outside “break-even” numbers and poor cow conditioning. This literature review outlines the strategy behind culling decisions and looks into potential plans to develop progressive body conditioning and quality of meat sent to auction. Currently the dairy industry is not placing much demand into providing the livestock auctions and harvest plants with higher quality meat. This …

Updated Ethography For European Starlings (Sturnus Vulgaris) In Central Coast Vineyards, Vic A. Guerrero

Wine and Viticulture

No abstract provided.

Using Progesterone As An Indicator Of Ovarian Response To Stimulation In Cattle, Kayla Mariah Kauffman

Animal Science

No abstract provided.

Vegetable Disease Identification Lesson Plan, Teddi Nichols

Agricultural Education and Communication

This purpose of this project is to provide a lesson plan and additional presentations for high school agriculture teachers. The lessons are based on vegetable disease identification. There are few high school agriculture departments that are teaching this material. This project provides an example lesson plan that can be used by the teacher if need be. By including numerous presentation slides the teacher can adapt the included lesson or create a new one that will fit their class and school site best.

Cal Poly Dairy: Injury, Illness And Prevention Program Safety Manual, Kathryn Rottenberg, Rachel White

Agricultural Education and Communication

The purpose of this project was to create a safety manual that was tailored specifically for the California Polytechnic State University, San Luis Obispo (Cal Poly) Dairy. This safety manual was created due to the fact that an out of date safety manual was the only frame of reference for student employees and management to follow. By generating a new safety manual that includes proper up to date information and safety procedures, it is anticipated that all student employees and management at the Cal Poly Dairy will be able to sustain a higher level of safety while employed there.

High School Curriculum Of Water Conservation, Daniel Ji

Agricultural Education and Communication

The purpose of this project was to create a less plan for high school students to help them understand the importance of water conservation. Through this understanding hopefully generate some ideas to solving the water crisis. The issue of water allocation and usage has been a long standing issue that California has been facing. This lesson plan will give the students a gateway to a topic that is only briefly talked about in the majority of the curriculums.

Characterization Of Changes In Composition And Physicochemical Properties Of Casein Micelles From Raw Milk To Buttermilk, Melissa Ann Looney

Master's Theses

It is well-documented that buttermilk has poor coagulation properties due to changes that occur to the casein micelles during the butter-making process. These modifications are generally attributed to the pasteurization of the cream upon which interactions between the proteins are promoted. It was hypothesized that churning is also a critical step for the changes that occur in composition of the casein micelles. The objective of this work was to learn more about the interactions that occur between casein micelles and MFGM components during the butter making process.

Raw cream was processed using a rotary churn at 18°C for approximately 30 …

To Make Florida Answer To Its Name: John Ellis, Bernard Romans And The Atlantic Science Of British West Florida, Kathleen S. Murphy

History

As the royal agent for British West Florida and an avid naturalist, John Ellis, FRS, took a keen interest in both the scientific and the commercial potential of the nascent colony. This article explores how Ellis and his West Floridian correspondent Bernard Romans illuminate the social and material practices of colonial science. In particular, it builds on recent scholarship to argue that new natural knowledge about West Florida did not simply circulate in the Atlantic World, but was in fact engendered by the movement of objects and ideas through the many circuits of transatlantic natural history and imperial administration. Foregrounding …

The Implications Of Global Warming Upon United States Dairy Herds: Effects On The Economics Of Dairying And Stability Of Herds With Low Genetic Diversity, Lauren Lusby

Dairy Science

Global warming (GW) is of real concern for the current U.S. agricultural industry. The agricultural industry has had a hand in emitting into the atmosphere. Severe heat spells seen nationwide and volatile climate shifts have pushed states such as California to implement governmental support to high impact areas due to dwindling water sources. Motivated dairy industry members have created plans to reduce dairy GHE contribution. Some research has suggested a benefit in GHG emissions from fewer cow-higher production approaches to dairy farmers. Most U.S. dairy cattle are specialized due to high inbreeding values created by selecting for few production traits …

Effects Of Alternative Protein Milk Replacer Versus All-Milk Protein Milk Replacer On Weight Gain And Grain Intake In Pre-Weaned Dairy Calves, Kayla Sandoval

Dairy Science

The objective of this study was to determine if there was a significant difference in weight gain and grain intake between Holstein calves fed milk replacer with an alternative protein source and an all-milk replacer. The study took place on a large commercial calf operation in the Central Valley of California. All calves on trial were Holstein bull calves and started the trial within three to ten days of birth. Calves on trial were weighed a total of four times. The 236 treatments did not start until the second weight was measured at about 30 days of age and was …

Haccp-Based Program For Central Coast Creamery: A Small-Scale Artisan Cheese Production Facility, Catherine Machado

Dairy Science

This project was designed to outline a HACCP-based program that could be used for the start-up of Central Coast Creameries personal plan. The goal was to first provide a layout to more easily distinguish the hazards that the plant might face. After doing so the HACCP plan was made to eliminate those hazards both efficiently and successfully.

The Analysis Of Solar Photovoltaic Power System On A Large Central Valley Dairy Farm, Brogan Rose Fernandes

Dairy Science

The objective of this paper was to determine the financial benefits of installing a PV solar system on a dairy farm in California to create a more efficient and profitable business. The data used was based off Fernoak Farms electrical bills from Southern California Edison before and after solar installation. The background knowledge of how PV solar systems work and their design was incorporated, along with the research of the past, present, and future solar markets. The characteristics of energy consumption on an average dairy farm is given to show the amount of electricity needed to keep the dairy facility …

Livestock Exhibitor Quality Assurance Curriculum, Amy Crockett, Regan Steele

Agricultural Education and Communication

The purpose of this project was to create an up-to-date curriculum for livestock quality assurance for county fairs throughout the United States to utilize if they desire to do so. The project included creating a PowerPoint presentation, a take home handout that summarizes the PowerPoint, an assessment based on the PowerPoint, and a website to make the material accessible to the public free of charge. A vital part of the project was to present the materials via a workshop at the Western Fairs Association conference. The curriculum created was designed for first-time showman or younger exhibitors with the hope to …

Implementing A Dairy Education Module In Private Inner-City High Schools, Veronica Tabora

Dairy Science

The objective of this project was to determine how knowledgeable private inner-city high school students are about basic information regarding the dairy industry. The project also sought to identify areas of interest these students may have concerning the dairy industry. Upon determining the level of knowledge and areas of interest an online dairy education module covering two main lessons was created. A survey was conducted to identify what type of information to include in the module. The survey was conducted through an online database and consisted of twenty questions. Different styles of questions were used to collect sound data that …

A Test To See If There Is A Commodity That Could Be Used To Perform A Cross-Hedge For Cash Purchased Supreme Alfalfa In Tulare, Ca. With A Single Board Traded Commodity., Justin Roeloffs

Dairy Science

The objective of this project was to determine if cash purchased supreme alfalfa hay in Tulare, CA could be cross-hedged by dairy farmers with a single commodity that is exchanged on the board in order to manage the volatility of alfalfa prices. The first objective was to find commodities that are traded on the board that could potentially be used to cross-hedge cash purchased or grown alfalfa. Three commodities that are similar to alfalfa were selected. The commodities were soybeans, soybean meal, and No. 2 yellow corn. The fourth commodity used was crude oil because fuel is a large cost …

The Effects Of Implementing Cow Cooling For Oostdam Dairy: Benefits From Milk Production, Feed Intake, And Reproduction, Mark Oostdam

Dairy Science

Heat stress has a major effect on management decisions for a dairy operation because of the decrease in the cows productivity. Dairy cattle loose efficiency of economic production due to lower milk yields and decreased pregnancy rates. Milk loss due to heat stressed cows in California averages a loss of 293 kg of milk/cow/year(St.-Pierre et al., 2003), and with milk prices reaching record highs, dairies are losing out on increased revenue opportunity. Increases in reproductive infertility from heat stress also affect revenue for a dairy operation by reducing conception rates (Hansen 1997) and pregnancy rates, which causes the average days …

Sustainable Fire Clearance Using Goats Teaching Unit, Elida Noren Moore

Agricultural Education and Communication

This project was created in order to fulfill the need of creating a unit of teaching for sustainable fire brush clearance using goats. The beginning goes over all the literature that was used to help create the project as well as the thought process that was followed in order to write the unit. These decisions were crucial for figuring out what was going to be included in the unit as well as the activities and lecture prompts that are provided. The unit covers everything from fire history and fire regulations in the state of California, to the care and treatment …

A Feasibility Study On Possible Uses For A Common Area Greenbelt In A Southern California Neighborhood, Sarah J. Doherty

Horticulture and Crop Science

Common greenbelt areas within residential neighborhoods are capable of existing as multi-function zones. ‘The Village’ in Southern Orange County, California, envisions its greenbelts as benefiting the homeowners, both in cost and esthetics, all beneficial insect and plant species, and the surrounding micro-climate. Research was conducted on three different systems, aimed at improving the areas of ‘The Village’ both economically and environmentally; the areas of focus were vineyard installation, fire resistant landscaping, and low impact development installations. The process began with evaluating the sites physical and judicial restraints. Soils tests, topography calculations, climate records, and preexisting species identifications were conducted; documents …

Improving Cow Comfort To Reduce Health Issues And Increase Milk Yield On Dairy Farms, Shonlyn Ferrari

Dairy Science

In recent years the dairy industry has been looking more and more into cow comfort. This is because there are many benefits to ensuring cows are in some of the best new facilities. I looked into some of the major issues relating to cow comfort which include how to improve your own dairy, what health problems are common with inadequate cow comfort, and how these issues relate back to milk yield. First cow comfort is outlined and explained, then health problems are shown to be caused by improper cow care and lastly how cow comfort can improve milk yield. In …

Improving The Online Accessibility Of The Cal Poly Dairy Science Department, Taylor E. Pires

Dairy Science

The objective of this project was to provide the Cal Poly Dairy Science Department with additional tools to recruit new students, maintain current students’ interest, and update alumni on Department happenings. This was accomplished through initiating an update of the Department website and developing a social media presence through a Facebook page. In addition, a photo shoot was organized to submit a photo for the Holstein World 2014 Collegiate Photo Contest, which was later used as a promotional tool. The update of the Department website was made possible through working with Cal Poly’s Information Technology Services, Cal Poly Web Services …

Setting Up A Safety Program For California Dairies., Shelby Locke

Dairy Science

The purpose of this project was to take the best research for dairy safety in California and combine it in everyday terminology that the average dairy producer could understand. In today’s dairy industry, money is tight and decreasing costs is very important. By implementing a safety program that is in compliance with CAL/OSHA’s standards, injuries will decrease, saving the dairy producer money. This paper has highlighted the major topics for a new dairy to start their safety training program. It includes descriptions of the hazards, responsibilities for employers and employees and ways to prevent accidents from occurring. By summarizing the …

The Sustainability Movement And Its Effects On Package Design, Gillian Mcglynn

Graphic Communication

The goal of this study was to examine how the sustainability movement has affected the packaging industry and how packaging design has changed to appeal to the more environmentally-friendly consumer. Furthermore, it examined how sustainability is defined and the specific design aspects that suggest a package is “green”. Consumer price and quality perceptions of green products were analyzed. The objective of this study was to expand consumer’s knowledge of what is sustainable and find how effectively consumer product companies are marketing to the “green” consumer.

Aged 539 Teacher Internship Report: Porterville High School, Jessica Lee Helm

Agricultural Education: Graduate Internship Reports

This internship/project report includes validation documents required in meeting the quality criteria for secondary-level programs of instruction in agriculture. The documents are concurrently used for the Agriculture Incentive Grant review process at Porterville High School conducted by representatives of the California Department of Education. The internship included the development of the Agriculture Incentive Grant Binder for Porterville High School. Also included are the Porterville FFA Program of Activities, Program Recruitment Materials created for the Porterville FFA, a detailed reflection of the recruitment efforts made, and a detailed reflection of the process of creating an Agriculture Advisory Committee.