COMPARISON OF ORGANIC AND INORGANIC SELENIUM ON PERFORMANCE, SERUM ATTRIBUTES AND CELLULAR IMMUNITY IN BROILER CHICKEN

Abstract

A feeding trial was conducted on 200 day-old Lohman meat broiler chicks for a period of 35 days in the poultry farm of Sher-e-Bangla Agricultural University, Dhaka. The aim of the study was to assess the efficiency of dietary organic Se, inorganic Se and their combined dose on the production index, blood parameters and immunity of commercial broiler chicken. The chicks were assigned to 4 treatment groups comprising of T 1 (control), T 2 (1.5ml/l organic Se), T 3 XIII

(0.75ml/l inorganic Se) and T 4 (combined Se) randomly. Treatments were replicated five times with 10 chicks per replication. The results showed that dietary supplementation of organic Se, inorganic Se and their Combined dose had significant (P<0.05) difference on feed consumption, body weight gain, final live weight, dressing percentage of broiler compared to control group. Higher feed consumption found in T 4 (1126.40±18.99g) group compared to other groups. However, superior final live weight (2257.66±27.95g) obtained in T 4 group where birds fed with combined dose of Se compared to those other treatment and control group. Improved FCR value (1.46±.00) found in T 3 group which is statistically significant (P<0.05) with the values of other groups. Dressing percentage is also higher in T 3

(75.10±0.90) group where birds fed with 0.75ml/l inorganic Se. Dietary supplementation of organic Se, inorganic Se and their combined dose had no significant (P>0.05) effect on the abdominal fat weight in different treatment groups. Birds supplemented with combined dose of Se (T 4 ) showed insignificantly (P>0.05) higher abdominal fat weight (31.90±1.603g).The glucose concentration had no significant (P>0.05) difference among all treatment groups but cholesterol concentration had significant (P>0.05) difference among all treatment groups and comparatively lower cholesterol level 143.60±15.79mg/dl was found in 0.75ml/l inorganic Se (T 3 ) supplemented group. In addition, the hematological parameters including white blood cell (WBC), lymphocyte and granulocyte which were significantly (P<0.05) lower in organic se, inorganic se and their combined dose groups compared to control group. Diets supplemented with organic se, inorganic se and their combined dose had no significant (P>0.05) effect on blood parameters compared to control group. Birds fed with 0.75ml/l inorganic se (T 3

) supplemented diet achieved superior result.