"HU - Ma\u010Farsko" . "Chl\u00E1dek, Gustav" . "2" . "Sk\u00FDpala, Martin" . . . . "4"^^ . "Effect of stable microclimate on milk production of Holstein cows on the 2nd and 3rd lactation" . . "4"^^ . "7"^^ . . "C\u00EDlem t\u00E9to pr\u00E1ce je zhodnotit vliv st\u00E1jov\u00E9ho mikroklimatu na ml\u00E9\u010Dnou produkci 30 Hol\u0161t\u00FDnsk\u00FDch krav na 2.a 3. laktaci. Kr\u00E1vy byly ust\u00E1jeny spole\u010Dn\u011B ve stejn\u00FDch podm\u00EDnk\u00E1ch ve voln\u00E9, stlan\u00E9 boxov\u00E9 st\u00E1ji. Z mikroklimatick\u00FDch faktor\u016F byly sledov\u00E1ny: teplota vzduchu (T), relativn\u00ED vlhkost (RH) a index THI. Experiment prob\u00EDhal v \u010Dervenci 2007 ve t\u0159ech obdob\u00EDch (P1 12dn\u00ED, P2 11dn\u00ED, P3 8dn\u00ED)."@cs . "THI; heat stress; relative humidity; temperature; stable; milk production; cows"@en . "Vliv st\u00E1jov\u00E9ho mikroklimatu na ml\u00E9\u010Dnou produkci Hol\u0161t\u00FDnsk\u00FDch krav na 2. a 3. laktaci"@cs . . "RIV/62156489:43210/08:00128823!RIV09-MSM-43210___" . "Effect of stable microclimate on milk production of Holstein cows on the 2nd and 3rd lactation"@en . "Effect of stable microclimate on milk production of Holstein cows on the 2nd and 3rd lactation"@en . "Animal welfare, etol\u00F3gia \u00E9s tart\u00E1stechnol\u00F3gia" . "Aim of this paper was to evaluate the effect of stable microclimate on milk production of thirty high-producing Holstein cows on 2nd or 3rd lactation. Cows were stabled together in same conditions in loose housing stable with bedding. As microclimatic factors were monitored air temperature -T (Centi degree), relative humidity -RH (%) and counted temperature-humidity index -THI. The experiment was carried out in July (2007) and the whole month was divided into three periods (P1 12 days; P2 11 days; P3 8 days). There were recorded 7 summers and 1 tropical day in the stable. RH varied from 40 to 80%, and THI were 7 days above 72. The mean difference between milk yields (kg/d) was only +1.0 kg in cows on 3rd lactation compared to cows on 2nd lactation. We have found that when the temperature in stable exceeds 21 degree up to the 30 degree (P2) with RH from 45% to 69% and THI from 66 to 79, the effective temperature was above the comfort zone for high--producing dairy cows. This event was accompanied by th"@en . . "Effect of stable microclimate on milk production of Holstein cows on the 2nd and 3rd lactation" . . "1786-8440" . "365256" . "43210" . . . . . . . "4" . "Walterov\u00E1, Lucie" . "Aim of this paper was to evaluate the effect of stable microclimate on milk production of thirty high-producing Holstein cows on 2nd or 3rd lactation. Cows were stabled together in same conditions in loose housing stable with bedding. As microclimatic factors were monitored air temperature -T (Centi degree), relative humidity -RH (%) and counted temperature-humidity index -THI. The experiment was carried out in July (2007) and the whole month was divided into three periods (P1 12 days; P2 11 days; P3 8 days). There were recorded 7 summers and 1 tropical day in the stable. RH varied from 40 to 80%, and THI were 7 days above 72. The mean difference between milk yields (kg/d) was only +1.0 kg in cows on 3rd lactation compared to cows on 2nd lactation. We have found that when the temperature in stable exceeds 21 degree up to the 30 degree (P2) with RH from 45% to 69% and THI from 66 to 79, the effective temperature was above the comfort zone for high--producing dairy cows. This event was accompanied by th" . "RIV/62156489:43210/08:00128823" . . "Vliv st\u00E1jov\u00E9ho mikroklimatu na ml\u00E9\u010Dnou produkci Hol\u0161t\u00FDnsk\u00FDch krav na 2. a 3. laktaci"@cs . "Z(MSM6215648905)" . . "Falta, Daniel" . "[F368F50F831C]" . . . . . . .