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Effects Of Bedding With Recycled Sand On Lying Behaviors, Udder Hygiene, And Preferences Of Lactating Holstein Dairy Cows, Heather Deanna Ingle
Effects Of Bedding With Recycled Sand On Lying Behaviors, Udder Hygiene, And Preferences Of Lactating Holstein Dairy Cows, Heather Deanna Ingle
Masters Theses
Effects of bedding with recycled sand and season on lying behaviors, stress, hygiene, and preferences of late-lactation Holstein cows were studied. Cows (n=64) were divided into 4 groups (n=8 per group) per season. In summer (Aug-Sept), cows were balanced by days in milk (268.1±11.9 d) and parity (2.0±0.2). In winter (Jan-Feb), mean DIM was 265.5±34.1 d. Cows were assigned to one of two treatments (trt) using a crossover design with each trt lasting 7-d (no-choice phase): bedding with recycled sand (RS; n=32) or control (CO; clean sand; n=32). Stocking density was maintained at 100%. Choice phase allowed a cow to …