Appraisal of Suitability of Probiotics Over Antibiotic Growth Promoter Supplementation on Growth Performances and Hematology in Broilers
Appraisal of Suitability of Probiotics Over Antibiotic Growth Promoter Supplementation on Growth Performances and Hematology in Broilers
Md. Shahidul Islam*, Md. Mizanur Rahman, Md. Sodrul Islam, Kazi Khalid Ibne Khalil and Apurbo Kumar Mondal
ABSTRACT
The experiment was carried out to evaluate the effects of probiotics over antibiotic growth promoter on growth performance and hematology of broiler chicken. To perform the study, a total number of sixty (60) day old ‘Cobb 500’ broiler chicks were randomly divided into three groups, naming group C that was supplied with normal broiler ration as control, group B was supplied with normal ration along with supplementation of probiotics, BACTOSAC @ 0.2 ml per liter drinking water and group A was reared with normal broiler ration along with growth promoter, antibiotics (Tetravet) @ 0.2 mg per liter drinking water. All the birds were reared in the same environmental conditions. As a part of growth performances evaluation, daily body weight gain and weight improvement, weekly average feed consumption, feed conversion ratio, final average body weight and carcass weight were recorded during the experimental period. As a part of hematological analysis at 5 weeks of age, blood parameters including total erythrocyte count (TEC), packed cell volume (PCV), haemoglobin (Hb), erythrocyte sedimentation rate (ESR) was determined. In case of growth performances group B showed significantly (p< 0.05) higher comparing to the group A and C. The lowest FCR found in group B comparing to the group A and C. In hematological analysis there was significant (p< 0.05) changes in TEC, HB, PCV in the group B compared to the group C and A. So, it can be concluded that probiotics has positive effects on the growth performances (daily and final body weight improvement, FCR and organs weight) and hematological values of broiler compared to the antibiotic growth promoters.
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