Jennifer Van Os

Assistant Professor & Extension Specialist - Animal Welfare

University of Wisconsin-Madison

United States

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Dr. Jennifer Van Os is an Assistant Professor and Extension Specialist in Animal Welfare at the University of Wisconsin-Madison, USA. Her research focuses on animal welfare in dairy cattle, including the use of computer vision for monitoring calf behavior, assessment of housing practices, and the effects of thermal stress on calf welfare. She is also involved in engaging with dairy farming stakeholders to enhance management practices and the welfare of dairy calves.

Articles (20)

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2025

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2021

Collaborators (8)

Paul Hemsworth

University of Melbourne

AUSTRALIA

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Erin Nelson

Assistant Professor

University of Guelph

CANADA

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Peter Krawczel

University of Helsinki

FINLAND

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Grahame Coleman

MONASH UNIVERSITY

AUSTRALIA

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Katherine Creutzinger

Assistant Professor, Dairy Cattle Behavior and Welfare

University of Wisconsin-River Falls

UNITED STATES

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Tiago Bresolin

Assistant Professor

University of Illinois at Urbana-Champaign

UNITED STATES

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Joao Ricardo Reboucas Dórea

Assistant Professor

University of Wisconsin-Madison

UNITED STATES

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Carissa Wickens

Associate Professor, Extension Equine Specialist

University of Florida

UNITED STATES

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Jennifer Van Os

Research Interests

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About

Articles (20)

Computer vision systems for monitoring hutch-housed dairy calves

Engaging dairy farming stakeholders in developing the Mooving Cows digital tool for practicing appropriate cow handling

Characterizing dry and early-lactation dairy cow management practices in Wisconsin and Minnesota

Producer perceptions of dairy calf management, behavior, and welfare

Preference for feed bins shared with cows of the same or different parity and relationships with feeding behavior and feed efficiency

Effects of thermal stress on calf welfare

Comparison of behavior, thermoregulation, and growth of pair-housed versus individually housed calves in outdoor hutches during continental wintertime

Thermal comfort and ventilation preferences of dairy calves raised in paired outdoor hutches during summertime

Long-Term Effects of Pre-Weaning Individual or Pair Housing of Dairy Heifer Calves on Subsequent Growth and Feed Efficiency

Assessing optimal frequency for image acquisition in computer vision systems developed to monitor feeding behavior of group-housed Holstein heifers

Perceptions of dairy cow handling situations: A comparison of public and industry samples

Social interactions, feeding patterns, and feed efficiency of same- and mixed-parity groups of lactating cows

Methods for detecting heat stress in hutch-housed dairy calves in a continental climate

Actively ventilating calf hutches using solar-powered fans: Effects on hutch microclimate and calf thermoregulation

Ontario Dairy Producers’ Perceived Barriers and Motivations to the Use of Pain Control for Disbudding and Dehorning Calves: A Qualitative Study

Impact of Stationary Brush Quantity on Brush Use in Group-Housed Dairy Heifers

Individual and environmental factors associated with defecation while lying down in dairy cows

Disbudding and dehorning practices for preweaned dairy calves by farmers in Wisconsin, USA

Stationary brush use in naive dairy heifers

Strategies to encourage freestall use in dairy heifers

Collaborators (8)

Paul Hemsworth

Erin Nelson

Peter Krawczel

Grahame Coleman

Katherine Creutzinger

Tiago Bresolin

Joao Ricardo Reboucas Dórea

Carissa Wickens

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