| dc.creator | Matarazzo S.V. | |
| dc.creator | Silva I.J.O. | |
| dc.creator | Perissinotto M. | |
| dc.creator | Moura D.J. | |
| dc.creator | Fernandes S.A.A. | |
| dc.date | 2005 | |
| dc.date | 2015-06-26T14:09:36Z | |
| dc.date | 2015-11-26T14:09:34Z | |
| dc.date | 2015-06-26T14:09:36Z | |
| dc.date | 2015-11-26T14:09:34Z | |
| dc.date.accessioned | 2018-03-28T21:10:07Z | |
| dc.date.available | 2018-03-28T21:10:07Z | |
| dc.identifier | | |
| dc.identifier | 2005 Asae Annual International Meeting. , v. , n. , p. - , 2005. | |
| dc.identifier | | |
| dc.identifier | | |
| dc.identifier | http://www.scopus.com/inward/record.url?eid=2-s2.0-70349126901&partnerID=40&md5=9cf0484c1dfdaf90c24c5bece89b3ecb | |
| dc.identifier | http://www.repositorio.unicamp.br/handle/REPOSIP/93839 | |
| dc.identifier | http://repositorio.unicamp.br/jspui/handle/REPOSIP/93839 | |
| dc.identifier | 2-s2.0-70349126901 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1241262 | |
| dc.description | This work aimed to evaluate the efficiency of thermal conditioned in resting area of freestall facilities and its consequences on productive and physiological responses in dairy cows. Experimental period was 28 consecutive days of November 2003. Third dairy multiple cows with mean milk production of 20 kg.day1. Treatments were: non-fan (NF), fan (F) and fan + misting (FM) in direction to animal bedding. Dry bulb temperature (DBT), air relative humidity (RH) and black globe temperature (BGT) inside and outside of facilities were measured every 15 minutes through a period of 24 hours. Milking was realized at 1, 9 and 17 hours and registering daily production. Animals were fed twice a day (10 and 15 hours) and amounts of offered and rejected feed were daily registered. Physiological data, as respiratory frequency (RF), rectal temperature (RT) and skin temperature (ST), were taken at 9, 11, 13, 15 and 17h. The RH was higher in NF (61.8%) and FM (61.8%) treatments than in F (60.3%). The facilities (F) where it was used had higher BGT (27.4°C) in relation to NF (27.1°C). Also, THI was higher in F (75.0) than in NF (74.5) and FM (74.3) treatments. In relation to physiological parameters, lactating cows of V0 treatment had lower rectal temperature at 11, 13 and 17h. Respiratory frequencies and skin temperature were within normal variation in all treatments. Higher feed intakes were observed in animals of NF (20.5 kg DM.day1) and F (21.3 kg DM.day1) treatments, but it did not increase milk productions. | |
| dc.description | | |
| dc.description | | |
| dc.description | | |
| dc.description | | |
| dc.description | Brouk, M.J., Smith, J.F., Harner III, J.P., Efficiency of modified evaporative cooling in Midwest dairy freestall barn (2001) Proc. 6th International Livestock Environmet Symp. Louisville: ASAE | |
| dc.description | Calegari, F., Calamari, L., Farzzi, E., Effects of ventilation and misting on behavior of dairy cattle in the hot season in south Italy (2003) Proc. 5th International Dairy Housing Conf, pp. 303-311. , Texas: ASAE | |
| dc.description | Du Preez, J.H., Parameters for the determination and evaluation of heat stress in dairy cattle in South Africa (2000) Onderstepoort Jour. Veter. Res., 67, pp. 263-271 | |
| dc.description | Fuquay, J.W., Heat stress and it affects animal production (1997) Livestock Envir., pp. 1133-1137 | |
| dc.description | Hahn, G.L., Management and housing of farm animals in hot environment (1985) Stress Physiology in Livestock, 2, pp. 151-174. , Boca Raton:CRC Press | |
| dc.description | Hahn, G.L., Mader, T.L., Heat waves in relation o thermoregulation, feeding behavior, and mortality of feedlot cattle (1997) Proc. 5th International Livestock Environment Symp., pp. 125-129. , St. Joseph, Mich.: ASAE | |
| dc.description | Huber, J.T., Alimentação de vacas de alta produção sob condições de estresse térmico (1990) Simpósio Sobre Bovinocultura Leiteira, pp. 33-48. , Piracicaba: FEALQ | |
| dc.description | Lin, J.C., Moss, B.R., Koon, J.L., Flood, C.A., Comparison of various fan, sprinkler, and mist systems in reducing heat stress in dairy cows (1998) Applied Eng. in Agric, 14 (2), pp. 177-182 | |
| dc.description | (2001) Nutrient Requirement of Dairy Cow., , Nutrition Research Council. 7.ed. Washington: National academy press | |
| dc.description | West, J.W., Effects of heat-stress on production in dairy cattle (2003) Journal of Dairy Science, 86 (6), pp. 2131-2144 | |
| dc.description | Wiersma, F., Stott, C.H., Evaporative cooling (1983) Ventilation of Agricultural Structures, pp. 113-118. , St. Joseph, Mich.: ASAE | |
| dc.language | en | |
| dc.publisher | | |
| dc.relation | 2005 ASAE Annual International Meeting | |
| dc.rights | fechado | |
| dc.source | Scopus | |
| dc.title | Thermal Conditioned In Resting Area Of Freestall Facilities And Its Consequences On Productive And Physiological Responses In Dairy Cows | |
| dc.type | Actas de congresos | |
