Product Quality
Find comprehensive resources and advice on dairy production, milk quality, processing, and standards. Learn the best milking practices, cow milk assessment, as well as dairy health and nutrition facts. Make the most out of this dairy producers’ knowledge hub on increasing cows’ milk production.
Dairy Production
A major factor in the volatility of the dairy industry is the fact that the quantity and quality of milk produced over time cannot be guaranteed. Advice on best milking practices and frequency can help dairy farmers improve the quality of their products and increase profit. Learn how to best monitor and control factors such as cow health, nutrition, and milking procedures.
Cows must be in excellent health to provide high-quality milk, and Penn State Extension provides comprehensive resources on the topic of dairy herd health. An efficient level of milk production will ensure that your dairy cattle are comfortable and promote udder health. At the same time, cows with healthy udders generally produce the desired volume of high-quality milk. Indicators such as high somatic cell counts (SCC) or high total bacteria count (TBC) simultaneously affect cattle health and milk quality standards. For additional information, look up our Dairy Cow Health and Diseases resources section.
High-quality milk comes from managing health and nutrition in your herd. Find resources on feed management, fat supplementation, and more. We also encourage you to explore the Dairy Cow Nutrition and Feeding resources for a deep-dive into nutritional and feeding factors that can impact your milk production strategy.
Milk Quality, Pasteurization, and Raw Milk
Whether you are using a pasteurization process, supply your milk to a third-party processor, or sell raw milk, you can get up-to-date advice on all the processes involved in preserving milk’s freshness, flavor, and quality.
Milk component levels are important factors in herd management – not only are they indicators of cow health and nutrition, but they can also directly impact dairy farm income. Browse our resources for more information on milk components and strategies to improve component production.
A solid understanding of the pasteurization process and milk sanitation requirements is necessary for the production of both saleable and waste milk. Operators can learn the steps of pasteurization as well as sterilization measures for associated equipment.
Dairy Standards and Regulation
For successful dairy farm management, you can access Penn State Extension resources on dairy product standards and regulations. Information on Grade "A" pasteurized Milk Ordinance, Food Safety Modernization Act (FSMA) compliance, and USDA Dairy Product Grades and Standards is available and regularly updated.
- Articles
Milk Quality Effects of a High Somatic Cell Count
A high somatic cell count can affect finished dairy product quality. - Articles
Feasibility of an On-farm Laboratory
Setting up a laboratory to assess raw milk quality and finished dairy products on the farm is an undertaking that can require additional equipment and technical knowledge. - Articles
Bleach Does It All on the Dairy or Does It?
Bleach remains a widely used and effective sanitizer throughout the dairy chain, but its benefits depend on selecting the correct product and applying it under the right conditions. - Articles
Streptococcus spp. in Dairy Foods? Is it a New Problem?
Streptococcus equi subsp. zooepidemicus is not a new pathogen, but it does pose a risk to humans. - Articles
What is a Milking Evaluation and How Can it Help Improve Milk Quality?
The Penn State Extension Dairy Team offers milking evaluations to help dairy producers improve their milk quality and identify issues that could be contributing to an increased Somatic Cell Count (SCC). - News
Selective Dry Cow Therapy: Is Your Herd Ready?
Date Posted 3/9/2026You may be familiar with the term selective dry cow therapy. From the name, we know the idea is to treat only some cows with an antimicrobial at dry-off. - Articles
Foodborne Pathogens Can Lurk Around the Farm Environment
The possible presence of foodborne pathogens is a concern to all dairy producers. Farms that have value-added dairy businesses should be extremely vigilant. - Videos
The Strip Yield Test
Length 4:32In this video, you will learn about an easy test that can be performed on your farm to test if overmilking is occurring. With these results, you can monitor unit removal as well as adjust unit take-off to reduce stress on teat ends. - Articles
Motivation for Compliance in the Milking Parlor
Keys to compliance include implementing standard operating procedures (SOPs), providing incentives, and incorporating the scientific rationale behind milking parlor tasks. - Articles
Do Farm Audits or Inspections Correspond with Milk Quality?
Inspections are an inevitable part of the routine on most dairy farms. - Articles
Conjugated Linoleic Acid (CLA) in Animal Production and Human Health
Conjugated linoleic acid (CLA) occurs naturally in ruminant milk fat and meat, but diet changes can affect the amounts. - Articles
Using Our Senses to Troubleshoot Milk Quality Issues
Changes in milk odor, taste, or appearance could reflect issues with animal health, milking equipment, sanitation, nutrition, or ventilation. - Articles
Feeding System Considerations for Manufacturing Dairy Products
Production systems can have an impact on the composition and functional properties of the finished dairy product. - Articles
Interpretation of Milk Urea Nitrogen (MUN) Values
MUN is a breakdown product of protein and it can be used to monitor protein status of cows. - Videos
RFID: How to Apply the Tag
Length 4:12This video explains tagging requirements for livestock and demonstrates how to apply the RFID tag properly. - Articles
Pasteurization of Non-Saleable Milk
Considerations of implementing on-farm pasteurization, discussion of waste milk quality, and evaluation of heat and UV methods. - Articles
Maintaining a Low Somatic Cell Count During the Winter
High somatic cell count is directly correlated to poor udder cleanliness. - Videos
California Mastitis Testing for Dairy Cows
Length 6:29In this video, you will learn how to perform a simple mastitis test called the California Mastitis Test. This test will help to decrease mastitis on your farm. - Articles
Milk Quality on PA Dairy Farms Using Robotic Milking Systems – Part 3
Robotic dairies surveyed in Pennsylvania had good hygiene scores overall. Even so, those with cleaner cows had lower bacteria counts in bulk tank milk samples. - Articles
Milk Quality on PA Dairy Farms Using Robotic Milking Systems – Part 2
Cleanliness of teats as the cow enters the robot and the ability of the robot to clean teats prior to milking will impact teat cleanliness at attachment and ultimately cow health and milk quality. - Articles
Milk Quality on PA Dairy Farms Using Robotic Milking Systems – Part 1
Automatic milking systems are gaining popularity on Pennsylvania dairy farms. - Articles
Wearing Gloves on a Dairy Farm
Wearing gloves is a very simple management practice that could help to reduce milk quality issues and limit spreading of contagious and environmental bacteria between quarters and cows. - Articles
Heifer Mastitis: Prevention is the Key!
Prevention of mastitis requires reducing exposure to mastitis pathogens and enhancing the ability of the heifers' immune system to respond. - Articles
Using Bacterial Counts as a Tool for Troubleshooting Problems
Microbiological parameters used to screen for milk quality can provide direction for troubleshooting sanitation and procedural issues on the farm. - Articles
Biofilms on Dairy Farms
Research reveals some mastitis-causing bacteria use biofilms to survive inside the mammary gland.
























