Effects of Organic Selenium and Probiotic Supplementation on the Performance of Indigenous and Crossbred Dairy Cows during Summer in the Tropics

The aim of the present study was to establish influence organic selenium and a yeast, Saccharomyces cerevisiae, in combination on animal performance, physiological status, milk production blood metabolites indigenous crossbred dairy cows during hot-humid climatic conditions tropics. A total 18 were divided into two groups(control treatment) containing 9 each based parity yield for period 45 days. control group fed basal diet comprising concentrate mix, wheat straw, multi-cut sorghum greens, while treatment offered rations supplemented with (4 g/d) along cerevisiae (1010 CFU/g; 4 g/d). There no significant changes found feed intake, body weight physiology; however, better efficiency recorded both groups, irrespective breed variation. non-significant increase groups comparison control. Similarly, effects observed haemato-biochemical profile types. Hence, it can be concluded that supplementation probiotics cattle moderately improved overall performance without affecting metabolic status under heat stress