Conditions for cold stress development in dairy cattle kept in free stall barn during severe frosts
S. Angrecka, P. Herbuthttps://doi.org/10.17221/7978-CJASCitation:Angrecka S., Herbut P. (2015): Conditions for cold stress development in dairy cattle kept in free stall barn during severe frosts. Czech J. Anim. Sci., 60: 81-87.
The impact of low temperatures combined with higher velocity of ventilated air in winter during severe frost in a free stall barn on the development of cold stress in Holstein-Friesian breed dairy cattle was studied. The study included measurements of outside and inside air parameters and cows’ milk yield. Cold stress was evaluated in three technological groups (TG) using the WCT (Wind Chill Temperature) index. During the research, significant temperature and wind velocity differences (by up to 5°C and 0.5 m/s) were recorded in three zones of the barn occupied by the individual TG. All this resulted in different values of WCT. During most severe frosts lasting for 9 days, the average air temperature in the barn was –8.9°C (the lowest value was –17.3°C). The calculated average operative temperature for cows from all TG was as follows: –7.0°C for TG1, –11.1°C for TG2, and –12.3°C for TG3. It was also observed that animals from TG2 suffered from mild cold stress, which resulted in milk yield reduction by approximately 2 kg. It was concluded that there is a strong correlation (r = 0.72–0.89 with P < 0.05) between milk production and the WCT index. The measurements of most important microclimate parameters in the barn were conducted during winter seasons over the period of 2 years. They led to the conclusion that cattle kept in free stall barns are not vulnerable to the combination of low temperature and increased air movements. Research results of the present as well as of other authors were the basis for developing a table determining operative temperature for cows depending on the temperature of the environment and air movement velocity. Yet, the calculations and analysis of results show that there is a need to improve the applied calculation formula for operative temperature during cold weather.Keywords:winter; cows; wind chill; milk production; housingReferences:
Adamczyk K., Gil Z., Felenczak A., Skrzynski G., Zapletal P., Choroszy Z. (2011): Relationship between milk yield of cows and their 24-hour walking activity. Animal Science Papers and Reports, 29, 185–195.Louis D. Albright , Michael B. Timmons (1984): Behavior of Dairy Cattle in Free Stall Housing. Transactions of the ASAE, 27, 1119-1126 https://doi.org/10.13031/2013.32931Berman A. (2003): Effects of Body Surface Area Estimates on Predicted Energy Requirements and Heat Stress. Journal of Dairy Science, 86, 3605-3610 https://doi.org/10.3168/jds.S0022-0302(03)73966-6Brouček J., Letkovičová M., Kovalčuj K. (1991): Estimation of cold stress effect on dairy cows. International Journal of Biometeorology, 35, 29-32 https://doi.org/10.1007/BF01040960Cook N.B., Bennett T.B., Nordlund K.V. (2005): Monitoring Indices of Cow Comfort in Free-Stall-Housed Dairy Herds. Journal of Dairy Science, 88, 3876-3885 https://doi.org/10.3168/jds.S0022-0302(05)73073-3Graunke Katharina L., Schuster Tibor, Lidfors Lena M. (2011): Influence of weather on the behaviour of outdoor-wintered beef cattle in Scandinavia. Livestock Science, 136, 247-255 https://doi.org/10.1016/j.livsci.2010.09.018Herbut Piotr (2013): Temperature, Humidity and Air Movement Variations Inside a Free-Stall Barn During Heavy Frost / Zróżnicowanie warunków cieplno-wilgotnościowych i ruchu powietrza w oborze wolnostanowiskowej podczas silnych mrozów. Annals of Animal Science, 13, - https://doi.org/10.2478/aoas-2013-0025Herbut P., Angrecka S. (2012): Forming of temperature-humidity index (THI) and milk production of cows in the free-stall barn during the period of summer heat. Animal Science Papers and Reports, 30, 363–372.Herbut Piotr, Angrecka Sabina (2013): Forecasting Heat Stress in Dairy Cattle in Selected Barn Zones with the Help of Thi and Thiadj Indexes / Prognozowanie Stresu Cieplnego U Bydła Mlecznego W Wybranych Strefach Obory Za Pomocą Wskaźników Thi I Thiadj. Annals of Animal Science, 13, - https://doi.org/10.2478/aoas-2013-0029Herbut P., Bieda W., Angrecka S. (2015): Influence of hygrothermal conditions on milk production in a free stall barn during hot weather. Animal Science Papers and Reports, 33, 49–58.Horký Pavel (2014): Effect of Protein Concentrate Supplement on the Qualitative and Quantitative Parameters of Milk from Dairy Cows in Organic Farming. Annals of Animal Science, 14, - https://doi.org/10.2478/aoas-2014-0008Kadzere C.T, Murphy M.R, Silanikove N, Maltz E (2002): Heat stress in lactating dairy cows: a review. Livestock Production Science, 77, 59-91 https://doi.org/10.1016/S0301-6226(01)00330-XKnı́žková Ivana, Kunc Petr, Koubková Marie, Flusser Jan, Dolezal Oldřich (2002): Evaluation of naturally ventilated dairy barn management by a thermographic method. Livestock Production Science, 77, 349-353 https://doi.org/10.1016/S0301-6226(02)00062-3Mader T. L., Johnson L. J., Gaughan J. B. (): A comprehensive index for assessing environmental stress in animals. Journal of Animal Science, 88, 2153-2165 https://doi.org/10.2527/jas.2009-2586Siple P.A., Passel C.F. (1945): Measurements of dry atmospheric cooling in subfreezing temperatures. Proceedings of the American Philosophical Society, 89, 177–199.Tucker Cassandra B., Rogers Andrea R., Verkerk Gwyneth A., Kendall Paul E., Webster James R., Matthews Lindsay R. (2007): Effects of shelter and body condition on the behaviour and physiology of dairy cattle in winter. Applied Animal Behaviour Science, 105, 1-13 https://doi.org/10.1016/j.applanim.2006.06.009West J.W. (2003): Effects of Heat-Stress on Production in Dairy Cattle. Journal of Dairy Science, 86, 2131-2144 https://doi.org/10.3168/jds.S0022-0302(03)73803-X