| Autor: |
Chaney WE; Diamond V., Cargill Health Technologies, 2525 60th Ave. SW, Cedar Rapids, IA 52404, USA., Naqvi SA; Engineering and Data Sciences, Cargill, Incorporated, 15407 McGuinty Road West, Wayzata, MN 15407, USA., Gutierrez M; Agrinvet Laboratorio, Barrio Lempira, 8 Calle, 7 y 8 Avenida, San Pedro Sula 21104, Honduras., Gernat A; Diamond V., Cargill Health Technologies, 2525 60th Ave. SW, Cedar Rapids, IA 52404, USA., Johnson TJ; Diamond V., Cargill Health Technologies, 2525 60th Ave. SW, Cedar Rapids, IA 52404, USA., Petry D; Diamond V., Cargill Health Technologies, 2525 60th Ave. SW, Cedar Rapids, IA 52404, USA. |
| Abstrakt: |
Postbiotic feed additives may aid foodborne pathogen reduction during poultry rearing. The study objective was to evaluate a postbiotic additive in parallel to an industry control diet and the subsequent associated burden of Salmonella enterica on a single, commercial broiler farm in Honduras. Twelve houses were matched and assigned the standard diet (CON) or standard diet plus postbiotic (SCFP). New litter was placed in each house and retained across flock cycles with sampling prior to each chick placement and three consecutive rearing cycles. At ~33-34 days, 25 ceca were collected on-farm from each house, treatment, and cycle. Salmonella prevalence in litter for CON (30.6%) and SCFP (27.8%) were equivalent; however, Salmonella load within positive samples was lower ( p = 0.04) for SCFP (3.81 log 10 MPN/swab) compared to CON (5.53 log10 MPN/swab). Cecal prevalence of Salmonella was lower ( p = 0.0006) in broilers fed SCFP (3.4%) compared to CON (12.2%). Salmonella load within positive ceca were numerically reduced ( p = 0.121) by 1.45 log 10 MPN/g for SCFP (2.41 log 10 MPN/g) over CON (3.86 log 10 MPN/g). Estimated burden was lower ( p = 0.003) for SCFP flocks (3.80 log 10 MPN) compared to CON (7.31 log 10 MPN). These data demonstrate the preharvest intervention potential of postbiotics to reduce Salmonella enterica in broiler chickens. |
