Estimation of cold stress effect on dairy cows
- 1 March 1991
- journal article
- Published by Springer Science and Business Media LLC in International Journal of Biometeorology
- Vol. 35 (1), 29-32
- https://doi.org/10.1007/bf01040960
Abstract
Twelve crossbred heifers (Slovak Spotted x Holstein-Friesian) were housed in an open, uninsulated barn with straw bedding and a concrete-floored yard. Minimum temperatures inside the barn were as low as −19°C. The average milk yield decreased as the temperatures approached these minima. Compared with the temperate conditions, the feed intake and blood levels of glucose and free fatty acids increased. The level of sodium declined significantly during the second cold period. Correlations and regressions between milk yield and biochemical parameters were calculated, and the results indicate that the concentrations of free fatty acids, cholesterol, and triiodothyronine and the haematocrit values may serve to predict milk production during periods of cold stress, or in lactations of 305 days.Keywords
This publication has 10 references indexed in Scilit:
- [The effect of extreme temperatures on hematologic and biochemical indicators in heifers].1987
- Effects of Cold Environments on Domestic AnimalsPublished by Springer Science and Business Media LLC ,1986
- Effects of Cold Temperature on the Milk Production and Some Physiological Responses of Lactating CowsNihon Chikusan Gakkaiho, 1985
- Ruminant Cold Stress: Effect on ProductionJournal of Animal Science, 1983
- Mammalian ThermogenesisPublished by Springer Science and Business Media LLC ,1983
- Cold Stress as it Affects Animal ProductionJournal of Animal Science, 1981
- Thermal Environment Affects Production Efficiency of LivestockBioScience, 1980
- Physiological changes in rats exposed to cold/restraint stressLife Sciences, 1978
- Effects of Environmental and Other Stressors on Blood Hormone Patterns in Lactating AnimalsJournal of Dairy Science, 1976
- EFFECTS OF LOW FLUCTUATING TEMPERATURES ON FARM ANIMALS: IV. INFLUENCE OF TEMPERATURE ON MILK YIELD AND MILK COMPOSITIONCanadian Journal of Animal Science, 1958