Abstract Dairies add fat supplements to the diets of
small ruminants to increase energy production and consequently
the production and quality nutritional and sensorial
of the milk. This study investigated the thermal and oxidative
stability of babassu, castor, faveleira, and sesame
oils by TG/DTA and PDSC. The profile of the fatty oils
studied was determined by GC–MS as well as physicochemical
characteristics. The thermogravimetric profile of
the oils indicated that mass loss was caused by the
decomposition or volatility of the triacylglycerides. Faveleira
and sesame oils showed a high percentage of polyunsaturated
fatty acids, especially C18:2. From a
nutritional standpoint, unsaturated oils are more suitable