EFFECTS OF DIETARY SUPPLEMENTATION OF PAPAYA LEAF (Carica papaya) AND BLACK CUMIN (Nigella sativa) AS THE ALTERNATIVE TO ANTIBIOTIC ON GROWTH PROMOTION AND HEALTH STATUS OF BROILER CHICKEN

Abstract

A feeding trial was conducted on 150 day-old Cobb 500 broiler chicks for a period of 28 days in the Poultry Farm of Sher-e-Bangla Agricultural University, Dhaka. The use of locally available feed ingredients has received particular attention as a viable alternative to the use of antibiotic and conventional feedstuffs. The aim of the study was to assess the efficiency of dietary Papaya Leaf (Carica papaya) Meal and Black Cumin (Nigella sativa) Seed supplementation on the production index and health status of commercial broiler chicken. The chicks were assigned to 5 treatment groups comprising of T 1 (Control), T 2 (antibiotic), T 3 (2% Papaya Leaf Meal), T (1% Black Cumin Seed) and T (1% of each Papaya leaf meal & Black Cumin Seed) randomly. Treatments were replicated thrice with 10 chicks per replicate. The results showed that dietary supplementation of Papaya Leaf Meal (PLM) and Black Cumin Seed (BCS) had no 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 5 (2212.60±11.320g) group compared to other groups. However, superior final live weight (1559±26.404g) obtained in T 1 group where birds fed with 2% PLM compared to those of antibiotic and control group. Improved FCR value (1.41±.026) found in T 3 3 group which is statistically non-significant (P>0.05) with the values of other groups. Dressing percentage is also higher in T

(72.34±1.131) group where birds fed with 2% Papaya leaf meal. Dietary supplementation of PLM and BCS had no significant (P>0.05) effect on the relative weight of spleen in different groups. Birds supplemented with 1% Black cumin seed (T ) showed insignificantly (P>0.05) higher spleen weight (2.28±.169g). But there was a significant (P<0.05) increased on the weight of bursa compared to antibiotic and control group. Higher bursa weight 2.50±.408g was found in T 4 (2% Papaya Leaf Meal) group. The relative weight of liver, gizzard, heart and intestine of different groups showed that there was no significant (P>0.05) difference among the groups. The average weight of liver, gizzard and heart were 36.32±.796g, 35.11±.557g and 7.58±.133g respectively. The glucose and cholesterol concentration had no significant (P>0.05) difference among all groups but comparatively lower cholesterol level 169.11±5.308mg/dl was found in 2% papaya leaf meal supplemented group. In addition, the hematological parameters including Red blood cell (RBC), White blood cell (WBC), Lymphocyte and Packed cell volume (PCV) which were significantly (P<0.05) increased in Papaya leaf meal and Black cumin seed supplemented groups compared to antibiotic and control group. Diets supplemented with PLM and BCS had leads to significant (P<0.05) reduction in bacterial colony count compared to control group but statistically no difference with T 2 3 (antibiotic) group. Birds fed with 2% Papaya Leaf Meal supplemented diet achieved superior result. 4 3