NANCY SHEORAN*, JYOTSANA, MANJEET SINGH AND EKTA
Department of Animal Nutrition, College of Veterinary Sciences,
Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar-125 004 (Haryana), India
*(e-mail: sheorannancy@gmail.com)
(Received : 20 May 2025; Accepted : 26 June 2025)
SUMMARY
An experiment was conducted to evaluate the effect of dietary supplementation of synbiotics in broiler production. A day old, 160 commercial Ven Cobb broiler chicks were randomly distributed into five treatments having four replicates with eight birds per replication. The experiment was conducted in the poultry shed of Department of Animal Nutrition, LUVAS, Hisar. A standard soybean- maize based basal diet was formulated and fed to the chicks in three different growth phases i.e. pre- starter (0-7 d), starter (8-21 d) and finisher (22-42 d). Basal ration was formulated as per BIS (2007) to fulfill the metabolizable energy (ME) and crude protein requirements of birds. The first treatment group was kept as a negative control (T1) and was given the basal diet without antibiotic, while second group (T2) was fed basal diet with antibiotic (Control). Birds in third (T3), fourth (T4) and fifth (T5) groups were fed basal diet of negative control supplemented with synbiotics at the rate of 2.0 g, 2.5 g and 3.0 g synbiotic/ kg of the feed, respectively. At the end of the trial, the birds from the metabolic cages were slaughtered for estimation of carcass traits/immune parameters. Hematological (Hb, TLC, TEC) parameters and mortality were also recorded.
Key words: Synbiotics, broiler, antibiotics, hematology, carcass traits/immune parameters