2Berrnan A,Folman Y,Kaim M,et al.Upper critical temperatures and forced ventilation effects for high-yielding dairy cows in a subtropical climate [J] .Journal of Dairy Science,1985,68:1488-1495.
3Dikmen S,Hansen P J. Is the temperature-humidity index the best indicator of heat stress in lactating dairy cows in a subtropical envi- ronment [J] .Journal of Dairy Science,2009,92:109-116.
4West J W,MuUinix B G.,Bemard J K.Effects of Hot, Humid Weather on Milk Temperature.