Effects of Supplemental Selenium Source (Feed vs. Water) on Hematology, Serum Biochemistry, and Stress Biomarkers in Uda Rams

Abstract

The study evaluated the effects of selenium (Se) supplementation via feed and water on haematology, serum biochemistry and stress biomarkers of Uda rams. Fifteen rams were randomly assigned to three groups: control, 12 mg/kg Se in feed, and 12 mg/kg Se in water. Results indicated that Se supplementation significantly improved body weight gain, average daily gain, and feed conversion ratio, while nutrient intake and digestibility remained largely unaffected. Morphometric parameters, including final body length, were enhanced in Se-supplemented groups. Haematological analysis showed significant increases in RBC, WBC, PCV, and lymphocyte counts, reflecting improved immune status. Selenium supplementation also improved serum albumin levels, modulated lipid profiles, and reduced oxidative stress markers (MDA, TAC, SOD). Behavioral observations revealed increased feeding time and reduced idle periods in supplemented rams, correlating positively with growth performance. The study concludes that Selenium levels (12 mg/kg selenium in feed and 12 mg/kg selenium in water) can enhance certain blood parameters.