Evaluating the Effectiveness of Probiotic and Multivalent Vaccination Strategies in Mitigating Bacterial Chondronecrosis with Osteomyelitis Lameness Using a Hybrid Challenge Model

Bacterial chondronecrosis with osteomyelitis (BCO) is caused by several bacteria, including <i>Salmonella</i>, <i>Staphylococcus</i> spp., <i>Escherichia coli</i>, <i>Enterococcus</i> spp., and <i>Mycoplasma</i> spp., and BCO is a significa...

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Main Authors: Amanda Anthney, Khawla Alharbi, Ruvindu Perera, Anh Dang Trieu Do, Andi Asnayanti, Reginald Onyema, Sara Reichelt, Antoine Meuter, Palmy R. R. Jesudhasan, Adnan A. K. Alrubaye
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Language:English
Published: MDPI AG 2025-02-01
Series:Animals
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Online Access:https://www.mdpi.com/2076-2615/15/4/570
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author Amanda Anthney
Khawla Alharbi
Ruvindu Perera
Anh Dang Trieu Do
Andi Asnayanti
Reginald Onyema
Sara Reichelt
Antoine Meuter
Palmy R. R. Jesudhasan
Adnan A. K. Alrubaye
author_facet Amanda Anthney
Khawla Alharbi
Ruvindu Perera
Anh Dang Trieu Do
Andi Asnayanti
Reginald Onyema
Sara Reichelt
Antoine Meuter
Palmy R. R. Jesudhasan
Adnan A. K. Alrubaye
author_sort Amanda Anthney
collection DOAJ
description Bacterial chondronecrosis with osteomyelitis (BCO) is caused by several bacteria, including <i>Salmonella</i>, <i>Staphylococcus</i> spp., <i>Escherichia coli</i>, <i>Enterococcus</i> spp., and <i>Mycoplasma</i> spp., and BCO is a significant animal health and welfare issue in broiler production, causing 1–2% of bird condemnation at marketing age and resulting in annual losses of tens of millions of dollars. This study evaluated the efficacy of a probiotic program alone and combined with a multivalent electron beam (eBeam)-inactivated vaccine in reducing BCO lameness. The probiotic program included an <i>Enterococcus faecium</i> spray (<i>E. faecium</i> 669, at 2 × 10<sup>9</sup> CFU/bird) at hatch and a triple-strain <i>Bacillus</i>-based product (<i>B. subtilis</i> 597, <i>B. subtilis</i> 600, and <i>B. amyloliquefaciens</i> 516 at 1 × 10<sup>9</sup> CFU/bird/day) in drinking water from day 1 to day 56. An aerosol transmission challenge model simulated commercial bacterial exposure. Birds were divided into five groups: a positive control (PC) group (T1) and a negative control (NC) group (T2) receiving no treatment and three treatment groups receiving the probiotic program (T3), the multivalent vaccine (T4), or both the probiotic program and the multivalent vaccine (T5). Data analyzed via ANOVA (<i>p</i> < 0.05) showed T3, T4, and T5 had significantly lower lameness (43.7%, 40.3%, and 40.7%) than T2 (71.0%) and T1 (83.0%). T5 resulted in reductions comparable to T4, indicating no significant synergistic effect. These findings show that probiotics alone or with a vaccine effectively mitigate BCO lameness, enhance broiler welfare, and reduce economic losses.
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spelling doaj-art-dc82e05423d840aaabe2c76beb26b8102025-08-20T02:44:33ZengMDPI AGAnimals2076-26152025-02-0115457010.3390/ani15040570Evaluating the Effectiveness of Probiotic and Multivalent Vaccination Strategies in Mitigating Bacterial Chondronecrosis with Osteomyelitis Lameness Using a Hybrid Challenge ModelAmanda Anthney0Khawla Alharbi1Ruvindu Perera2Anh Dang Trieu Do3Andi Asnayanti4Reginald Onyema5Sara Reichelt6Antoine Meuter7Palmy R. R. Jesudhasan8Adnan A. K. Alrubaye9Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USACenter of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USACenter of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USACenter of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USACenter of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USAAviagen North America (NA), Huntsville, AL 35806, USAAviagen North America (NA), Huntsville, AL 35806, USAAnimal and Plant Health & Nutrition, Novonesis, 2970 Hørsholm, DenmarkCenter of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USACenter of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR 72701, USABacterial chondronecrosis with osteomyelitis (BCO) is caused by several bacteria, including <i>Salmonella</i>, <i>Staphylococcus</i> spp., <i>Escherichia coli</i>, <i>Enterococcus</i> spp., and <i>Mycoplasma</i> spp., and BCO is a significant animal health and welfare issue in broiler production, causing 1–2% of bird condemnation at marketing age and resulting in annual losses of tens of millions of dollars. This study evaluated the efficacy of a probiotic program alone and combined with a multivalent electron beam (eBeam)-inactivated vaccine in reducing BCO lameness. The probiotic program included an <i>Enterococcus faecium</i> spray (<i>E. faecium</i> 669, at 2 × 10<sup>9</sup> CFU/bird) at hatch and a triple-strain <i>Bacillus</i>-based product (<i>B. subtilis</i> 597, <i>B. subtilis</i> 600, and <i>B. amyloliquefaciens</i> 516 at 1 × 10<sup>9</sup> CFU/bird/day) in drinking water from day 1 to day 56. An aerosol transmission challenge model simulated commercial bacterial exposure. Birds were divided into five groups: a positive control (PC) group (T1) and a negative control (NC) group (T2) receiving no treatment and three treatment groups receiving the probiotic program (T3), the multivalent vaccine (T4), or both the probiotic program and the multivalent vaccine (T5). Data analyzed via ANOVA (<i>p</i> < 0.05) showed T3, T4, and T5 had significantly lower lameness (43.7%, 40.3%, and 40.7%) than T2 (71.0%) and T1 (83.0%). T5 resulted in reductions comparable to T4, indicating no significant synergistic effect. These findings show that probiotics alone or with a vaccine effectively mitigate BCO lameness, enhance broiler welfare, and reduce economic losses.https://www.mdpi.com/2076-2615/15/4/570lamenessbroilersBCOprobioticeBeam-inactivated vaccine
spellingShingle Amanda Anthney
Khawla Alharbi
Ruvindu Perera
Anh Dang Trieu Do
Andi Asnayanti
Reginald Onyema
Sara Reichelt
Antoine Meuter
Palmy R. R. Jesudhasan
Adnan A. K. Alrubaye
Evaluating the Effectiveness of Probiotic and Multivalent Vaccination Strategies in Mitigating Bacterial Chondronecrosis with Osteomyelitis Lameness Using a Hybrid Challenge Model
Animals
lameness
broilers
BCO
probiotic
eBeam-inactivated vaccine
title Evaluating the Effectiveness of Probiotic and Multivalent Vaccination Strategies in Mitigating Bacterial Chondronecrosis with Osteomyelitis Lameness Using a Hybrid Challenge Model
title_full Evaluating the Effectiveness of Probiotic and Multivalent Vaccination Strategies in Mitigating Bacterial Chondronecrosis with Osteomyelitis Lameness Using a Hybrid Challenge Model
title_fullStr Evaluating the Effectiveness of Probiotic and Multivalent Vaccination Strategies in Mitigating Bacterial Chondronecrosis with Osteomyelitis Lameness Using a Hybrid Challenge Model
title_full_unstemmed Evaluating the Effectiveness of Probiotic and Multivalent Vaccination Strategies in Mitigating Bacterial Chondronecrosis with Osteomyelitis Lameness Using a Hybrid Challenge Model
title_short Evaluating the Effectiveness of Probiotic and Multivalent Vaccination Strategies in Mitigating Bacterial Chondronecrosis with Osteomyelitis Lameness Using a Hybrid Challenge Model
title_sort evaluating the effectiveness of probiotic and multivalent vaccination strategies in mitigating bacterial chondronecrosis with osteomyelitis lameness using a hybrid challenge model
topic lameness
broilers
BCO
probiotic
eBeam-inactivated vaccine
url https://www.mdpi.com/2076-2615/15/4/570
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