The effect of fish oil and selenium supplement on performancea and blood parameters in Lori Bakhtiyari lambs

The current experiment carried out to investigate the effect of fish oil and selenium supplementation in the ration on performanceand blood parameters in lambs. Sixteen male Lori Bakhtiyari lambs with the same mean weight (39.6±0.290)were randomly allotted to 4 treatments in completely randomized design. Dietary treatments were included of: 1) control (basal diet without any additives); 2) FO (basal diet +2% fish oil; 3) FO + Se (basal diet + 2% fish oil +0.2 mg/kg selenium; 4) Se (0.2 mg/kg selenium). In order to evaluate the blood metabolites, samples were taken on day 60 of the experiment to measure the serum triglyceride (TG), cholesterol (CHOL), high density lipoprotein (HDL), density lipoprotein (LDL) and glutation peroxidase (GPX). Results indicated FO + Se had no significant influence on performance (p>0/05). Moreover, this treatment led to decreased serum TG, CHOL, LDL and increased GPX and HDL‎‎(P<0.05). Therefore results show that however performance was not affected by dietary treatments, selenium as well as fish oil compared to the control group significantly affected blood parameters.