Efficiency of Tribulus terrestris L. as an antibiotic growth promoter substitute on performance and immune responses in broiler chicks

Abstract

ObjectiveTo evaluate the effect of Tribulus terrestris L. (puncture vine) as an antibiotic growth promoter substitute on growth performance, carcass traits, and immune responses in broiler chickens. MethodsA total of 192 one-day-old as hatched broiler chicks (Ross 308) were randomly allocated to four treatment groups, with 4 replicates of 12 birds. The following treatments were applied: basal diet (control), control+4.5 mg flavophospholipol/kg, or control+1 or 5 g puncture vine powder/kg. Vaccines against newcastle, influenza disease, and sheep red blood cells were administered to immunological stimuli. ResultsDaily feed intake, internal organ weights, and carcass traits were not influenced by the dietary treatments except for carcass yield that increased in broilers fed diet supplemented with 1 g puncture vine powder/kg at 42nd day. Broilers receiving 1 g puncture vine/kg tended to have a lower feed conversion ratio compared to other groups during starter, finisher and entire experimental period (P>0.05). Broilers receiving 1 or 5 g puncture vine/kg had higher antibody titer against Newcastle disease virus compared to other groups (P<0.05). Broilers receiving 1 g puncture vine/kg had the highest antibody titer against avian influenza virus and sheep red blood cells at 28 and 31 days of age, respectively (P<0.05). ConclusionsIn conclusion, the overall results of the current study showed that puncture vine powder seems to have the potential to positively influence growth performance and immune responses of broiler chicks.