According to Kenya Veterinary Association chairman Samuel Kahariri, the zone depends on the age, breed, feed intake, diet composition, previous state of temperature familiarisation, production, housing and stall conditions, tissue that is fat and skin, insulation and external (coat) insulation, and the behaviour of the animal.
Kata ambazo chama cha ACT Wazalendo imesimamisha wagombea ni pamoja na Isagahe, iliyopo Kahama mkoani Shinyanga, Kijichi, iliyopo Temeke jijini Dar esSalaam, Nkome iliyopo Mkoani Geita, Tanga iliyopo mkoani Ruvuma na Ihumwa iliyopo mkoani Dodoma.