Associate Professor at U of Guelph, applied ethologist, animal care and welfare scientist, cow psychologist.

Joined January 2018
38 Photos and videos
Yesterday in Drayton the Dairy Modernization KTT Project (@Dairy_Mod) hosted an event to discuss "Your next build" with producers. This work with @derekbhaley is funded by Alliance (@AglnnovationON). Visit the project website here: dairymodernization.ca @DairyatGuelph
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If you're a dairy farmer (or work with them), and you're interested in new barns or renovations to improve productivity, cow health, and cow comfort - we hope to see you at this event Apr 16 in Drayton, ON!
Attention #dairyfarmers in #Waterloo #Wellington! Join us in #Drayton to hear from speakers on the financial, technical, and cow comfort aspects of building a new barn. Register early for discounted rate: dairymodernizationdrayton.ev… Hurry- spots are limited!
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Still a faculty member of course but I am very excited to be taking on this new role as well!
The Campbell Centre for the Study of Animal Welfare at @OntVetCollege has appointed Dr. Derek Haley as its new director, bringing extensive expertise in livestock behaviour and evidence-based approaches to animal welfare. Learn more: uoguel.ph/pkdvs
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Derek Haley retweeted
A new bill in Congress—the HELP Act—aims to permanently exempt livestock haulers from federal HOS and ELD rules. Introduced by Rep. William Hurd of Colorado, the Hauling Exemptions for Livestock Protection Act would apply to both loaded and empty trucks transporting animals, including insects and aquatic species. The bill seeks to ease scheduling challenges and improve animal welfare by giving drivers more flexibility. Supporters say long mandatory rest breaks can put animals at risk and make routes harder to plan. Unlike temporary waivers issued during emergencies, the HELP Act would create a permanent exemption. While still early in the legislative process, the proposal is gaining attention across the trucking and agricultural industries. Read the full article: truckdrivernews.com/help-act… Please leave us a review on Google: shorturl.at/UCzpU #TruckDriverNews #LivestockHauling #HOSExemption #TruckingLegislation #ELDRules #AnimalTransport #TruckingRegulations #TruckersVoice #AgHaulers #TruckingIndustry
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Derek Haley retweeted
Save the date👉Beef Symposium 2025 Great program in the works
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Culling decisions: Analyze cattle welfare, enhance the bottom line agproud.com/articles/60249-c…. Whether beef or dairy, could calling them "market cows" instead of "cull cows" help orient our thinking more toward financial opportunity rather than them being merely a discard?
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Congratulations to @MariahCrevier on her fantastic MSc thesis defence yesterday! It's been a pleasure to co-advise Mariah with @cow_vet Dr. Jessica Gordon, as we explore pain mitigation strategies for beef cattle, with funding from @BeefFarmersON & @AgInnovationON.
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Derek Haley retweeted
Standing in pens or lots heavily contaminated with #manure softens the #skin and provides high #exposure to the causative bacteria. High temperatures and #humidity will also cause the skin to chap and crack, leaving it susceptible to #bacterial invasion. feedlotmagazine.com/news/fee…
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Calling all cow-calf producers in Ontario! One final push here to try and get as many respondents as possible to our 15-minute survey! We greatly appreciate all the responses received so far!
. @derekbhaley and I are looking for Ontario cow-calf producers to participate in a 15 min survey on their calf management practices. Visit ➡️ bit.ly/oncowcalf ⬅️ for the survey All responses are anonymous, and you can chose to enter to win one of five $100 gift cards!
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Please retweet / re-X(?), share to your contacts, or send via DM to help @cbwinder and I get as many responses as possible to our short survey of Ontario cow-calf producers.
. @derekbhaley and I are looking for Ontario cow-calf producers to participate in a 15 min survey on their calf management practices. Visit ➡️ bit.ly/oncowcalf ⬅️ for the survey All responses are anonymous, and you can chose to enter to win one of five $100 gift cards!
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It sure does (IMO)! The challenge for ethologists is describing it and the affective state(s) experienced by the calf in the cart, and those watching the show. What is it about bedding?!?
Does this qualify as play based behaviour @derekbhaley ?
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Derek Haley retweeted
For those interested in composting bedded pack (CBP) barns/dairies, there is a free webinar Wed eve w. general updates by @Feedlandontario @uofg @OMAFRA @OntarioDairy @ProdLaitQc funded research producer panel incl @typical_farmer us06web.zoom.us/meeting/regi…

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Our very own Dr. Tina Widowski from @UofGuelphOAC will be inducted into the Ontario Ag. Hall of Fame for her significant contributions to #ontag via the swine and poultry industries. Congratulations Tina! Read more: uoguel.ph/3fbbs
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"Raised with Respect centers on the common ground found between cattle producers and beef consumers, with a focus on animal welfare and beef sustainability" drovers.com/news/education/r…
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Derek Haley retweeted
New research just out from @michaelwbrunt on veterinarians' views on promoting dairy cattle welfare @DairyatGuelph @CCSAW_UofG Full paper available open access: frontiersin.org/articles/10.…

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Derek Haley retweeted
Recent work from Palacio and colleagues suggests that routine assessment of cow comfort measures is an important part of cow comfort and welfare improvement strategies. Read the full article here ➡️ bit.ly/PalacioCJAS
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Congrats to Dr. Paula Olivares Guzman (@pau091) on completing her PhD! It's been a pleasure! As you set out on the long drive west tomorrow, we wish you good luck in your postdoctoral fellowship position studying beef cattle in Alberta @uLethbridge & @AAFC_Canada. @CCSAW_UofG
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