Health and Care
Find information on dairy cattle health, including prevention and control of mastitis. Resources on hoof health, lameness, heat stress, vaccines, and overmilking are also available in this section. Learn body conditioning scoring techniques.
Dairy Cattle Health Care
Dairy herd health is dependent on farmers’ expertise and readiness to prevent, diagnose, control, and treat common cow diseases and health issues.
The Pennsylvania Dairy Health and Biosecurity Manual is a comprehensive guide designed to help dairy farmers keep their herds healthy and economically productive. Compiled by Penn State Extension’s team of experienced veterinarians, it’s a practical and up-to-date resource on all cow-health related problems.
In addition to herd health care, dairy producers should also manage the biosecurity risks associated with cattle farming. Here you can find resources on how to reduce the risk of spreading infectious diseases and pathogens.
Dairy producers could also benefit from the body condition scoring technique and use it when troubleshooting cattle health and nutrition problems. Information on cow vaccines and schedules is also available in this section.
Udder Health and Mastitis: Prevention and Control
Mastitis, an inflammation of the cow’s udder, is the most common dairy cattle disease in the United States. It is also the most expensive issue on dairy farms, costing the average US dairy farm $110 per cow each year.
Proper diagnosis and treatment are necessary to avoid costly veterinary treatment and milk product loss. Learn how to conduct initial mastitis testing, how to culture milk to identify bacteria, and determine the cause of the mastitis with the On-Farm Milk Culturing for Mastitis Control online course.
Mastitis in cattle can be caused by contact with milking machinery or by infection. Get practical advice on the best milking practices for mastitis prevention.
Here you’ll find additional resources on udder health, overmilking, teat cleanliness, teat-end health, and rapid milk flow. For more information on the effect of mastitis on milk quality, visit the Dairy Production and Milk Quality section of this site.
Other Dairy Cattle Diseases
Information on this site is intended to help producers diagnose and treat other common diseases, such as foot rot and lameness, milk fever, endometritis, and ketosis in dairy cattle. Research on bovine tuberculosis is also available.
Get advice on hoof health, prevention, and control of foot problems in dairy cows, and learn methods to reduce lameness in new and existing housing systems.
Penn State Extension resources can also help producers identify and treat dairy cattle diseases and conditions, such as grass tetany, Johne's Disease, bovine leukemia virus, milk fever, and heat stress.
One of the toughest decisions livestock producers have to make when raising and caring for animals is deciding when euthanasia is the appropriate and humane choice. Find advice on how to determine if is it time for euthanasia and instruction on how to choose and perform appropriate euthanasia techniques.
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Tools and AppsColostrometer Adjustment Spreadsheet
Adjust readings from a colostrometer to provide the value expected if colostrum was tested at 68°F. -
Workshops$15.00
Calf Chat: The C's of Calf Care
When 01/30/2026Length 4 hours, 30 minutesEvent Format In-PersonExplore essential calf care, nutrition, and disease prevention while gaining practical, hands-on skills to improve calf health and management on your farm. -
WebinarsFree
Manejo Aplicado de LecherÃa: Mejores Prácticas para Terneros Recién Nacidos y en Pre-Destete
When 12/15/2025Length 1 hour session, 6 daysObtenga estrategias prácticas y respaldadas por la investigación para mejorar la salud de los terneros en esta serie bilingüe de seminarios, que aborda el calostro, el parto, el cuidado pre-destete y los efectos del estrés por calor. -
WebinarsFree
Applied Dairy Management: Newborn/Pre-Weaned Calf Best Practices
When 12/15/2025Length 1 hour session, 6 daysEvent Format Virtual | LiveGain practical, research-backed strategies to support healthier calves in this bilingual webinar series covering colostrum, calving, pre-weaning care, and the impacts of heat stress. -
WebinarsFree
Strong Foundations: Raising Resilient Calves
When 02/12/2026Length 1 hourEvent Format Virtual | LiveExplore science-based practices for calf care, biosecurity, and health management in this free Penn State Extension webinar series. -
VideosUsing a Colostrometer
Length 3:10Demonstration of using a colostrometer to estimate IgG content in colostrum. -
ArticlesTrouble Shooting Colostrum Management: Colostrum Calculator
Use the Colostrum Calculator spreadsheet to investigate factors related to IgG absorption in calves. -
VideosRFID: How to Apply the Tag
Length 4:12This video explains tagging requirements for livestock and demonstrates how to apply the RFID tag properly. -
ArticlesMilking Management: Consistency is the Key!
The secrets of producing high quality milk is to consistently use a well-defined milking technique and to maintain a clean and dry environment for all animals. -
ArticlesHeat Stress in Dairy Calves
Calves can suffer from heat stress too. Strategies for reducing its impact are explored in this article. -
ArticlesGrowth Monitor: Compare Heifers to Breed Standards
Spreadsheet tools for tracking dairy heifer growth in comparison to breed standards. -
ArticlesGrowth Charts for Dairy Heifers
Comparing to a breed standard can indicate if heifer growth is progressing normally. -
ArticlesDehorning: What Are Your Options?
Timing and best practices for caustic paste and hot iron dehorning, common methods of removing horns on young calves. -
ArticlesBody Condition Scoring as a Tool for Dairy Herd Management
Body condition scoring evaluates fatness or thinness according to a five-point scale and scores are used to fine-tune dairy nutrition and health. -
ArticlesAre Your Cows Taking a Vacation?
Too much time away from their pen can cause a deficit in cows' daily time budget. -
ArticlesWhat Does Current Research Tell Us About Transition Cow Management?
Focus on reducing stress and increasing dry matter to lessen the impact on transition cow's immune systems and promote good health and optimum lactation at calving. -
ArticlesDry Cow Heat Stress Abatement
The numbers speak for themselves, it pays to invest in a cooling system for dry cows. -
WebinarsFree
Implementing One Health: Selective Mastitis Treatment
When 12/17/2025Length 30 minutesEvent Format Virtual | LiveThis webinar introduces selective clinical mastitis treatment as a One Health strategy and guides producers in deciding when antimicrobial treatment is needed. -
ArticlesMaintaining a Low Somatic Cell Count During the Winter
High somatic cell count is directly correlated to poor udder cleanliness. -
ArticlesMilk 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. -
ArticlesWearing 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. -
ArticlesDo Your Cows Know How You Feel About Them?
Handling, transportation, environment, feed, interactions with other animals, and interactions with humans can stress cattle. Do our attitudes influence factors that can affect profitability? -
ArticlesHeifer 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. -
VideosCattle Euthanasia
Length 6:04This video will help the viewer determine the most ideal time for euthanasia, and instruction on how to choose and perform appropriate euthanasia techniques. -
ArticlesAnimal Feed Safety Practices to Prevent Aflatoxin in Milk
Animal feed production is undergoing a shift in approach to food safety, with preventive measures to address possible hazards before they occur.
