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Kansas Agricultural Experiment Station Research Reports
2005; Kansas Agricultural Experiment Station contribution; no. 06-46-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 963; Dairy; Cow comfort; Cow cooling; Heat abatement
Articles 1 - 2 of 2
Full-Text Articles in Life Sciences
Impact Of Frequency Of Feedline Soaking Combined With Evaporative Air Cooling In A Humid Environment (2005), John F. Smith, D.V. Armstrong, M. J. Vanbaale, D.R. Bray
Impact Of Frequency Of Feedline Soaking Combined With Evaporative Air Cooling In A Humid Environment (2005), John F. Smith, D.V. Armstrong, M. J. Vanbaale, D.R. Bray
Kansas Agricultural Experiment Station Research Reports
Heat stress in hot and humid environments reduces milk production, decreases reproduction, and increases health-related problems. The summertime environment in north-central Florida is especially difficult because the combination of high relative humidity and high temperature results in a temperaturehumidity index (THI) above the critical value of 72 for significant portions of the day. Previous work at Kansas State University had shown that the combination of soaking and evaporative air cooling could effectively cool heat-stressed cattle. Effectiveness of this feedline soaking, either in the afternoon and at night, or only at night, in combination with evaporative cooling was evaluated on a …
Using Vaginal Temperature To Evaluate Heat Stress In Dairy Cattle (2005), B. Cvetkovic, John F. Smith, Joseph P. Harner, Michael J. Brouk
Using Vaginal Temperature To Evaluate Heat Stress In Dairy Cattle (2005), B. Cvetkovic, John F. Smith, Joseph P. Harner, Michael J. Brouk
Kansas Agricultural Experiment Station Research Reports
A rise in body temperature is a signal that heat stress has exceeded the heat-exchange capacity of the dairy cow. Previous studies have shown a strong positive correlation between vaginal temperature and respiration rate, demonstrating a stress response to an increased body temperature. Vaginal temperature was collected by using temperature probes attached to an external data logger. Although these devices were very sensitive to changes in body temperature of cows housed in tie-stalls, the external data logger presented a significant application challenge for freeranging animals housed in freestalls. A data logger was acquired that would be completely indwelling in the …