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Full-Text Articles in Life Sciences

A Comparison Of The Standard 5-Day Co-Synch With Cidr Protocol And A 14-Day Co-Synch With Cidr Protocol In Primiparous And Multiparous Beef Cattle, Taylor Anne Dericco May 2014

A Comparison Of The Standard 5-Day Co-Synch With Cidr Protocol And A 14-Day Co-Synch With Cidr Protocol In Primiparous And Multiparous Beef Cattle, Taylor Anne Dericco

Animal Science

No abstract provided.


The Effects Of Implementing Cow Cooling For Oostdam Dairy: Benefits From Milk Production, Feed Intake, And Reproduction, Mark Oostdam Mar 2014

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 ...


Development Of Applied Standard Operating Procedures And Monitoring Practices, Nick Southfield Mar 2014

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 ...


Effects Of Covering System, Sealing Time, And Packing On Fermentation, Nutritional Quality, And Organic Matter Loss Of Corn Silage In A Drive-Over Pile, Katie Rose Nutcher Mar 2014

Effects Of Covering System, Sealing Time, And Packing On Fermentation, Nutritional Quality, And Organic Matter Loss Of Corn Silage In A Drive-Over Pile, Katie Rose Nutcher

Dairy Science

This project involved an experiment conducted using a 550-ton capacity drive-over pile of whole-plant corn silage. The main effects compared were: packing the final forage surface with a loader or crawler, delay or immediate sealing, and covering with standard plastic or an oxygen barrier film.

Numerous studies have shown that the absence of oxygen in silage stored in a bunker silo or pile is crucial for proper fermentation and to ensure the highest quality silage at feed out. When oxygen is allowed to permeate through the covering material, it leads to visible spoilage. This trial showed that the oxygen barrier ...


Preparing Samples Of Rancid Milk For Milk Judging Contests, Danielle Li Mar 2014

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 ...


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 Mar 2014

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.


Best Management Practices For Raising Dairy Calves From Birth To Weaning, Alexa Cabral Mar 2014

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 ...


Setting Up A Safety Program For California Dairies., Shelby Locke Mar 2014

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 ...


The Analysis Of Solar Photovoltaic Power System On A Large Central Valley Dairy Farm, Brogan Rose Fernandes Mar 2014

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 ...


Updated Ethography For European Starlings (Sturnus Vulgaris) In Central Coast Vineyards, Vic A. Guerrero Mar 2014

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 Mar 2014

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

Animal Science

No abstract provided.


The Effects Of Substituting True Protein With Non-Protein Nitrogen In Holstein Dairy Heifers Precision-Fed Different Forage To Concentrate Ratios, Noe Alberto Gomez Mar 2014

The Effects Of Substituting True Protein With Non-Protein Nitrogen In Holstein Dairy Heifers Precision-Fed Different Forage To Concentrate Ratios, Noe Alberto Gomez

Animal Science

Understanding the efficiency and digestibility of dietary nutrients in dairy heifers is essential for minimizing costs and environmental impacts of the dairy industry. The objective of this study was to interpret the effects of manipulating rumen-degradable protein (RDP) in a precision feeding system. Eight Holstein ruminally cannulated heifers (14.6 ± 0.1 mo of age, and 386 ± 9.1 kg of weight) were randomly assigned to 2 forage levels: HC (25% forage) and LC (75% forage) and to a degradable protein sequence [0% degradable protein from urea U, 100% casein C (no urea treatment U0); 33% U, 67% C (low ...


A Literature Review On Injection-Site Lesions In Dairy Cows And Culling Decisions, Eric B. Parsons Mar 2014

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 ...


Haccp-Based Program For Central Coast Creamery: A Small-Scale Artisan Cheese Production Facility, Catherine Machado Mar 2014

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.


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 Mar 2014

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 ...


Improving Cow Comfort To Reduce Health Issues And Increase Milk Yield On Dairy Farms, Shonlyn Ferrari Mar 2014

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 ...


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 Mar 2014

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 ...


A Review Of Mastitis Control Practices, Rebecca Gooder Feb 2014

A Review Of Mastitis Control Practices, Rebecca Gooder

Dairy Science

No abstract provided.


Proteomic Analysis Of Mammary Epithelial Cell Development, Alyssa Kay Conly Jan 2014

Proteomic Analysis Of Mammary Epithelial Cell Development, Alyssa Kay Conly

Master's Theses and Project Reports

In this set of studies, a proteomic approach was used to investigate the protein profile of the mammary epithelial cell (MEC) through different stages of mammary development. The HC11 cell line was used to investigate protein changes between undifferentiated and differentiated MEC, which represent the pregnant and lactating states of the cells. This comparison revealed an interesting differential expression profile underscoring many recognized processes that occur in differentiated MECs, while others unveiled differences between MEC differentiation in vitro and in vivo. Primary MEC were also isolated from virgin, pregnant, and primiparous quiescent mice to compare the virgin state of the ...


Managing The Veterinary Clinic Enterprise, Shelby N. Smyly Dec 2013

Managing The Veterinary Clinic Enterprise, Shelby N. Smyly

Animal Science

This document serves as a guideline for the student management of the Veterinary Clinic Enterprise.


Conjugated Linoleic Acids Alter Body Composition Differently According To Physiological Age In Moulard Ducks, Jeff Fesler, Daniel Peterson Dec 2013

Conjugated Linoleic Acids Alter Body Composition Differently According To Physiological Age In Moulard Ducks, Jeff Fesler, Daniel Peterson

Master's Theses and Project Reports

Conjugated linoleic acids (CLA) have been shown to have remarkable yet inconsistent metabolic effects in mice, rats, hamsters, chickens, cattle, and humans. In particular, effects on lipogenesis vary with tissue, physiological state and specie. In this study we tested the hypothesis that CLA would differentially affect ducks of the same genetic background but of differing age. Growing (7 wk) and maintenance (11 wk) Moulard ducks were grouped by age and fed a standard diet supplemented with either 5% soybean oil (control) or 5% CLA isomer mixture. Animals were harvested after 3 weeks or 6 weeks for assessment of body composition ...


An Assessment Of Habitat Suitability For Pronghorn Populations Of The Central Valley Region Of California, Virginia Burroughs Dec 2013

An Assessment Of Habitat Suitability For Pronghorn Populations Of The Central Valley Region Of California, Virginia Burroughs

Master's Theses and Project Reports

Efforts to reintroduce and maintain populations of pronghorn (Antilocapra americana) to the California Central Valley, specifically the Carrizo Plain National Monument (CPNM) and the Mojave Desert (Antelope Valley) portion of Tejon Ranch, have largely been unsuccessful due to dwindling numbers of translocated animals. The objective of this study was to improve upon previous models for the CPNM using aerial survey data and then apply the model to the Tejon Ranch. Aerial survey data collected from 2000-2010 on the CPNM was used to establish “use” and “non-use” areas in the model. Model variables included vegetation type (forest, shrub, grassland, semi-desert scrub ...


The Envenoming Pandemic And The Misguided Views Of Snakes: Developing Sustainable Relationships Between Native Poisonous Snakes Of India And The Citizens Of Maharashtra Through The Use Of The Irula Model., Destiny Villanueva Nov 2013

The Envenoming Pandemic And The Misguided Views Of Snakes: Developing Sustainable Relationships Between Native Poisonous Snakes Of India And The Citizens Of Maharashtra Through The Use Of The Irula Model., Destiny Villanueva

Animal Science

Due to its vast population and general negative consensus regarding snakes, India is notorious for having more snakebite incidents than any other country. Snakes are simultaneously revered and feared in Indian religion and culture. This stigma is perpetuated through propaganda, family beliefs, and innate fears of snakes.These stigmas are more pronounced within rural areas, such as the region of Mahad within the state of Maharshtra. Envenoming is endemic in these areas, and others like them. The World Health Organization identified envenoming as one of the most neglected tropical diseases of the 21st century (Nature India, 2013). Additionally, both nonvenomous ...


Effects Of Post-Castration Interval Length On Recovery Of Epididymal Sperm Of Canine And Equine Sperm, Jordan Escobar Jun 2013

Effects Of Post-Castration Interval Length On Recovery Of Epididymal Sperm Of Canine And Equine Sperm, Jordan Escobar

Animal Science

No abstract provided.


Design, Construction And Cost Analysis Of Manufacturing Horse Bits, Erica L. Timmermans Jun 2013

Design, Construction And Cost Analysis Of Manufacturing Horse Bits, Erica L. Timmermans

BioResource and Agricultural Engineering

This report discusses the design, fabrication and cost analysis of two unique horse bits. On the market today, there are many different kinds of bits to serve a multitude of purposes. However, this project explored the option of having two different shanks types made of stainless steel in addition to three mouthpieces that are able to fit in both types of shanks.


Grass-Fed Dairy Steer Enterprise Analysis For Alexandre Family Ecodairy Farms, Joseph Jackson Alexandre Jun 2013

Grass-Fed Dairy Steer Enterprise Analysis For Alexandre Family Ecodairy Farms, Joseph Jackson Alexandre

Agribusiness

Alexandre Family EcoDairy Farms (AFEF) is a family dairy farm, producing organic milk in northern California. In the last decade, AFEF has been expanding in value added natural food enterprises, including pastured free-range eggs, pastured pork and grass-fed beef.

This study focuses on the analysis of an organic grass-fed ground beef from dairy-beef cross steers coming from AFEF. The grass fed beef enterprise was analyzed by adopting a UC Davis cost and returns study, modifying it to AFEF production limitations and conditions. Through partial budgeting analysis, opportunity costs were discovered leading to breakeven prices for the final grass fed ground ...


Keller's Broken Heart Ranch Internship: March-June 2012, Lia C. Swanson May 2013

Keller's Broken Heart Ranch Internship: March-June 2012, Lia C. Swanson

Animal Science

No abstract provided.


An Educational Video And Research Experiment On The Longevity Of Chicken Eggs, Kyle Patrick Mcdonald May 2013

An Educational Video And Research Experiment On The Longevity Of Chicken Eggs, Kyle Patrick Mcdonald

Agricultural Education and Communication

The purpose of this project was to create a video designed to educate the public about chicken egg storage and refrigeration. The information in the video was based on a research experiment performed by the author, which was designed to measure the chronological decline of internal egg quality over a ten-week period. By creating an educational video about the longevity of chicken eggs, it is hoped that consumers will learn to keep their eggs past their sell-by dates. This project includes an educational video as well as an outline for a research project.


Cal Poly Goat Program, Lauren Christensen Apr 2013

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 ...


Judging Market Goats, Matthew M. Marshall Apr 2013

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.