M. J. Alam and Z. Ferdaushi
Corresponding author’s Email: jangalam@yahoo.com
Abstract
Effects of developed probiotics on growth performance and blood parameters were evaluated. To achieve the objectives, 480 unsexed Cobb 500 broiler chicks were raised over 28 days. Chicks were wing-banded, weighed individually and randomly allocated into four equally major groups each having three replicates. Chicks of group T1 (control group) were fed the starter and finisher diets that did not supplemented with probiotics or antibiotic. The chicks of groups T2 was fed the control starter and finisher diets supplemented with antibiotic. The control group- T1 fed a basal diet (unsupplemented-control), whereas the antibiotic and experimental groups fed the same basal diet but supplemented with antibiotic group-T2 containing 14 mg/kg of Flavomycin, probiotic group-T3 (only bacteria) provide 1 ml per litre water and probiotic group-T4 (bacteria & yeast) containing 1 ml/L of probiotic in drinking water. Weekly body weight, feed consumption and feed conversion were measured. Meat composition and sensory parameter were evaluated. Blood parameters at 4 weeks of age including red blood cell count (RBC), white blood cell (WBC), hematocrit (HCT), haemoglobin (Hb), blood glucose level (BGL) and blood cholesterol level (BCL) were determined. Moreover, antibody titre and intestinal microflora were measured. All birds were kept under similar environmental, managerial and hygienic conditions. Probiotic supplementation significantly increased the body weight and daily weight gain of broiler chicks at 28 days (p<0 .05="" 0.05="" 15="" a="" against="" and="" antibody="" appeared="" ash.="" at="" birds="" blood="" broilers="" but="" cholesterol="" colibacilli="" composition="" conversion="" day="" diet="" differed="" effects="" experimental="" fat="" fed="" feed="" feeding="" groups.="" had="" have="" higher="" improved="" in="" insignificant="" it="" lactobacilli="" less="" lower="" meat="" moisture="" mortality="" nd="" not="" noticed="" observed="" of="" on="" probiotic.="" probiotic="" probiotics="" protein="" showed="" significant="" supplemented="" that="" the="" value="" was="" were="" while="" with=""> 0.05) compared to the control. It can be concluded that use of prepared probiotic resulted in improved growth performance, carcass composition, gut lactobacilli, reduced serum cholesterol and developed antibody against ND in broiler chickens. Moreover, supplementation of the probiotic to broilers had no detrimental effect as antibiotic. Therefore, usage of these probiotic bacteria as antibiotic alternative in poultry nutrition can be recommended.
Keywords: Blood parameters; Broiler; Growth performance; Probiotic
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