Fowl
typhoid (FT) is an economically significant
bacterial disease of layers leading to a drastic drop in egg production. Due to increased public health concerns about
antibiotics in poultry feed, a search for new safe antimicrobials for treating fowl
typhoid is crucial. The antimicrobial effect of
cinnamaldehyde essential oil (CnEO) against fowl
typhoid in layers was investigated in this experiment. The 60-week-old BV300-layer birds (n = 100) were divided into five groups: the non-challenged control group A, only
cinnamaldehyde-treated group B (CnEO @ 1:8000 dilutions through
drinking water for 60 days), the challenged group C, challenged plus
cinnamaldehyde therapy group D (CnEO @ 1:8000 dilutions through
drinking water from 16 to 30 dpi), and challenged plus
antibiotic therapy group E (
chloramphenicol @ 1 gm/5lit through
drinking water from 16 to 30 dpi). Hens from all challenged groups were challenged with Salmonella Gallinarum (VTCCBAA588) @ 1 × 108 CFU/ml orally. Various parameters such as clinical signs, mortality, egg production and egg weight, colony-forming unit (CFU) count of cecal content, eggshell surface, and egg yolk were evaluated all through 60 days of an experimental trial. Results indicated that, in the case of the
cinnamaldehyde therapeutic group, there was a significant improvement in egg production, mild clinical signs, lower feed conversion ratio (FCR), and a significantly lower bacterial count in ceca and on the eggshell surface compared to the control challenge group. Thus, CnEO @ 1:8000 dilutions through
drinking water can be a potential antimicrobial for controlling fowl
typhoid.