September 24, 2024

Understanding Sleep, Rest, and Drowsing in Dairy Cattle and the Importance of Dairy Behavior Research with Kathryn Proudfoot, PhD, and Emma Ternman, PhD

44 minutes

We’re celebrating dairy cow behavior this month on the pod as the special issue of JDS Communications, Behavior in Dairy Animals, launches! Host Matt Lucy chats with Katy Proudfoot, PhD, associate professor at the University of Prince Edward Island and director of the Sir James Dunn Animal Welfare Centre at the Atlantic Veterinary College in Prince Edward Island, and Emma Ternman, PhD, associate professor at Nord University. The two are coauthors of an Editor’s Choice article in the special issue devoted to estimating sleep in dairy cattle. Katy and Emma explain how both of their academic paths were filled with “banana peels” and lots of googling—all of which eventually led them to the study of behavior and welfare in dairy cows. They dive into their work to better measure sleep and rest in dairy cows, explaining that sleep serves several essential functions throughout the animal kingdom, so understanding sleep in dairy cows could help us to improve their overall welfare, health, and production. They review how scientists are currently measuring and estimating sleep in dairy cattle—from changes in behavior to electrodes placed on a cow’s head—including the limitations of these methods and where the science might go. As prey animals, dairy cows must be vigilant during the day and average only about three hours of total sleep time. But they can supplement this with “drowsing,” an intermediate state between waking and sleeping that allows cows to stay alert and continue ruminating while getting essential rest. The two explain, however, that this research is still in its infancy and much work still needs to be done to understand sleep in dairy herds—from how the lights and noise of a barn might impact cows to whether they dream. Finally, the guests give their best advice, including why sleep is just as important for dairy scientists as it is for cows, why no one should ever pull all-nighters, and how to make writing papers fun.

Episode Eighteen Show Notes

Learn more about Katy Proudfoot and connect with her on LinkedIn.

Learn more about Emma Ternman and connect with her on LinkedIn.

Want to learn more about the latest science of dairy cow

behavior? Dive into the Special Issue of JDS Communications!

Catch up on the papers and the news articles discussed in the episode:

Methods used for estimating sleep in dairy cattle, JDS Communications (2024)

Effects of acute lying and sleep deprivation on metabolic and inflammatory responses of lactating dairy cows, Journal of Dairy Science (2021)

Sleep in dairy cows recorded with a non-invasive EEG technique, Applied Animal Behaviour Science (2012)

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