Submitted by: Daniela Roland, Penn State Extension Franklin County Dairy Educator
When dairy producers think about improving milk production, nutrition, and genetics often come to mind first. However, research has shown that cow comfort is also important and affects production. From stall design and bedding quality to feed access, water availability, and handling practices, seemingly small changes can significantly impact milk production, animal health, and farm profitability. Understanding a cow’s time budget and ensuring she has adequate time to eat, lie down, and ruminate can help farm managers see measurable returns within their herd.
Research suggests cows require approximately 12 to 14 hours of resting time, 4 to 5 hours for eating, 30 minutes for drinking, and another 2 to 3 hours for walking, grooming, and other activities each day. That leaves only about 2.5 to 3.5 hours available for milking and time away from the pen (Grant, 2004). When cows are forced to spend excessive time standing, waiting, or competing for resources, they often sacrifice either eating or resting. Both of these can negatively affect production. Producers should strive to minimize the time cows spend away from their housing areas and ensure animals have easy access to feed, water, and resting spaces.
Among all comfort factors, resting time has a big impact on milk production. Research has found that blood flow to the mammary gland increases by approximately 25% when cows are lying down compared to standing. This increased circulation supports milk synthesis and overall udder function. Studies have also demonstrated that for each additional hour of rest beyond nine hours, cows can produce roughly two additional pounds of milk in a day. Resting cows also ruminate more effectively, which supports higher dry matter intake and components (McWilliams, 2019).
Providing comfortable stalls is key to maximizing resting behavior. Well-maintained stalls with deep, dry bedding encourage cows to spend more time lying down. Beyond improving milk production, good bedding management reduces hock and knee injuries, improves hygiene scores, lowers somatic cell counts, and decreases the risk of lameness.
Feed access is another critical component of cow comfort. Cows should have feed available for at least 21 hours per day and enough bunk space to eat comfortably. Research has shown that feed restrictions can significantly reduce dry matter intake and milk production, while consistent feed availability and feeding for refusals can increase milk yield. Adequate bunk space is especially important for transition cows, fresh cows, and dry cows.
Grouping and stocking density also influence cow behavior and performance. Overstocking increases competition for stalls, feed, and water, leading to more standing time. Overstocked barns can also lead to reduced lying time, and decreased rumination for the animals that cannot access a stall. First-lactation heifers are particularly vulnerable because they are naturally subordinate to older cows. Grouping these animals separately can increase dry matter intake and boost milk production during early lactation. Likewise, minimizing pen moves can reduce social stress, as cows often require several days to establish a new hierarchy after regrouping.
Water, often called the most important nutrient on the dairy farm, deserves equal attention. Since milk is approximately 87% water, high-producing cows have tremendous water requirements. Waterers should be easy to access, clean, and capable of meeting peak demand. Industry recommendations suggest allowing 15 to 20% of a group to drink simultaneously and positioning water sources so cows never need to travel excessive distances. Proper water access supports feed intake, milk production, and overall health.
Finally, cow comfort extends beyond facilities and equipment. Calm, consistent handling can have a direct influence on milk production. Research has shown that cows subjected to rough handling during milking retained substantially more residual milk than those gently handled. Quiet, predictable interactions reduce stress and improve animal welfare without adding cost to the operation.
Dairy farmers don’t always have to have the newest barn, the latest technology, or a brand new parlor to have a good, well-cared-for herd of animals. Things like consistent stall maintenance, adequate feed and water access, effective heat abatement, proper stocking density, and gentle stockmanship work together to support cow comfort. While each individual management practice may seem small, the combined effect can be substantial. In today’s challenging dairy economy, investing in cow comfort remains one of the most reliable ways to improve both herd performance and profitability.
References
Grant, R. 2004. Stocking Density and Time Budgets. W. H. Miner Agricultural Research Institute. Western Dairy Management Conference.
McWilliams, C. A. Schwanke. T. DeVries. 2022. Is greater milk production associated with dairy cows who have a greater probability of ruminating while lying down? J. Dairy Science Communications; 3, 66-7.
