Made available in DSpace on 2022-04-28T19:48:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-11-23; Properly quantifying environmental heat stress (HS) is still a major challenge in livestock breeding programs, especially as adverse climatic events become more common. The definition of critical periods and climatic variables to be used as the environmental gradient is a key step for genetically evalua...