Vol. 11, Special Issue 12 (2022)

The addition of chromium to the diet, however, is one of these methods that is less frequently used. Cr has been shown in research to affect dairy cow performance, immunological responses, glucose and fatty acid metabolism, and antioxidant status. There is increasing data that suggests that domestic livestock may benefit from several supraphysiological effects of Cr. It is possible to keep cattle healthy overall while preventing disease, enhancing growth, and using a variety of methods and products. Cr supplementation benefited dairy cows' dry matter intake, milk production, and milk composition in the early, mid, and late stages of lactation in several studies. In certain trials, Cr supplementation improved the performance of growing animals, their immunological response, and some blood indicators. Heat stress is a key environmental stressor in the chicken business, resulting in significant financial loss. Heat stress causes oxidative stress, acid-base imbalance, and immunocompetence suppression, resulting in higher mortality and decreased feed efficiency, body weight, feed intake, and egg production, as well as affecting meat and egg quality. To reduce heat stress in chickens, several strategies have been explored, with varying degrees of success. Cr supplementation decreased corticosterone and cholesterol levels while increasing serum total protein, albumin, and insulin concentrations. This review focuses on the scientific information around the effects of heat stress on poultry health and performance, as well as possible heat stress mitigation measures in broiler chickens and laying hens.