author(s)
AK Wankar, PM Kekan, SB Daware, Manimaran S, Bagadhe P and Buktare MR

abstract
The study was undertaken on adult lactating Red Kandhari cattle and Marathwadi buffaloes at Livestock Farm Complex, College of Veterinary & Animal Sciences, Parbhani to observe the effect of heat stress/THI [EC 1 & EC 2] on different milk components. Milk was collected every fortnight and meteorological variable were recorded every week. A significant negative correlation was seen for milk solid not fats [SNF], total solids [TS], protein, lactose and salt at high THI [EC 1 period] in both red kandhari cattle and marathwadi buffaloes (P<0.05). While, THI and high ambient temperature has negative correlation with milk components, no such association was found for wind speed and solar radiations. It was observed that high THI negatively affects milk constituents and the animals required more than 40-50 days to acclimatize from high THI to low THI during EC 2 period where no variation was recorded (P>0.05).