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Purple coneflower supplements in dairy calves improves immunity and reduces inflammation

Natural supplements are commonly used in human medicine, but could dairy calves also benefit from medicinal plants? Researchers at the University of Guelph are investigating the effects of purple coneflower on immunity, health, and performance of dairy calves.


Extended colostrum feeding can improve weight gain and reduce disease

It is clear that feeding enough high-quality colostrum soon after birth is critical for calf health and has long-term effects on their performance. Could there be benefits of feeding colostrum after passive transfer of antibodies is expected to occur?

Bottle feeding a calf.

How individual cow personalities affect milking performance in dairy cows

Some cows can are more curious, others more shy and some may even be quite aggressive. Researchers at the University of Guelph are looking at the connection between a cow’s personality and her performance.

An automated milking system implemented at a Devon farm. Castlewood Dairy farm, Musbury, Devon.

Cull cow management on Ontario dairy farms

Ontario dairy farmers must regularly remove animals from their herd by culling. Through a provincial survey of 248 dairy farmers, researchers at the University of Guelph found opportunities for improvement of management of cows leaving dairy farms.

Ontario bovine veterinarians’ knowledge and perspectives on cull cow management

Recent attention to the fitness of cull dairy cows entering the beef industry points to a need for attention to management on farms. Using a survey of cattle veterinarians in Ontario, researchers at the University of Guelph explored how bovine veterinarians may help to provide solutions.

Dairy calf laying on a bed of straw.

Improving reproductive management of dairy cows using health monitoring

Like people using fitness trackers, more and more dairy farmers are using automated activity monitors (AAMs) as an important part of herd reproductive management.

A pair of hands hold a tablet showing information about a cow in the background.

How hock injuries heal

Cows can experience skin lesions on their hocks. Researchers studied how housing environment affects healing of hock injuries.

Cow hock

Field data identify cows with greater resilience to heat stress

Researchers used weather and production data from across Canada to identify cows that maintained milk yield better under high temperature and humidity. This can allow for genetic selection for animals with greater heat tolerance.

New approaches to reduce the effects of inbreeding on fertility

Targeted genomic selection may help to reduce inbreeding and improve fertility while maintain other genetic gains.

Genetic selection to reduce methane from cows

Large multi-site research projects led by Dairy at Guelph geneticists are identifying more feed-efficient cows with lower methane emissions.

Optimizing calcium and vitamin D intake for children

Researchers looked into sources and adequacy of intake of calcium and vitamin D by young children

A cute little girl is sitting in the kitchen and is drinking a glass full of milk.

The science of validating grass-fed milk labels

Food scientists developed a method to confirm grass-fed milk labels based on the fatty acid profile of the milk.

Exploring immune response genotype under heat stress

Cows with favorable High Immune Response status may also be more resilient to heat stress.

Understanding the impacts of management practices on udder health during dry-off

Farmers have long used antibiotic treatment at dry-off to cure and prevent intra-mammary infection. But with health concerns growing over antimicrobial resistance, producers are looking for other management practices

Dairy calf management practices following disbudding are a major driver for wound healing

Farmers looking to improve pain management and wound healing following dairy calf disbudding procedures should consider the level of milk feeding as well as pain medication, according to University of Guelph research.

Disbudding healing

Identifying opportunities to improve calf health with transition milk

A new University of Guelph study suggests that dairy farmers feed newborn calves milk from their dam for several days after colostrum feeding to help ensure health and prevent disease.

Oligosaccharide Yield

Understanding the impacts of transportation on dairy calf welfare

University of Guelph researchers expect that their new study will help improve calf welfare by determining effects of long-distance transportation.

Long Transportation

Understanding dairy farmers’ thinking about antimicrobial use

With growing scrutiny of the use of antimicrobials in food animals, a University of Guelph study provides insights into how dairy farmers make decisions about antimicrobial use (AMU).

AMU Decision Making Factors

Next generation links — maternal and daughter health in dairy cows

Clinical disease has negative effects on dairy cow health and performance—but a new study shows the offspring of cows who have experienced disease are actually less likely to become ill themselves.

Health in Dairy Cows

What’s the best method to reduce calf disbudding pain?

University of Guelph researchers have found that a particular veterinary sedative may reduce indicators of pain during calf disbudding.

Calf Disbudding Pain

Improved milk production and quality on Canadian dairy farms are expected to result from a benchmark study on herd management and housing conditions conducted by University of Guelph researchers.

Herd Management

A complete genetic and economic assessment of the current breeding structure in Canadian dairy cattle is in the process of being completed by a team of U of G researchers from the Department of Animal Biosciences. For more information, contact Prof. Christine Baes or Prof. Flavio Schenkel

Smile…and say more cheese, milk and yogurt

This study was part of the Guelph Family Health Study and was funded by Health for Life. For more information, contact Justin Sheremeta at

Pain reduction during calf disbudding

For more information, contact Professor Charlotte Winder, Dept. of Population Medicine, Ontario Veterinarian College.

When to start calves on automated milk feeders

For more information, contact Professor Stephen LeBlanc, Dept. of Population Medicine, Ontario Veterinarian College.

Welfare advice is better received with expert delivery

For more information, contact Professor David Kelton, Dept. of Population Medicine, Ontario Veterinarian College.


Adding water to dry cow feed improves cow health

For more information, contact Professor Trevor DeVries, Dept. of Animal BioSciences, Ontario Agricultural College.

Getting kids to consume more dairy

For more information, contact Professor Andrea Buchholz, Family Relations & Applied Nutrition, College of Social & Applied Human Sciences.

Apple pomace as a yogurt stabilizer

For more information, contact Professor Gisèle LaPointe, Dept. of Food Science, Ontario Agricultural College.

Start the day off right with dairy

For more information, contact Professor Douglas Goff, Dept. of Food Science, Ontario Agricultural College.

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