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- Title
Identifying Dietary Timing of Organic Trace Minerals to Reduce the Incidence of Osteomyelitis Lameness in Broiler Chickens Using the Aerosol Transmission Model.
- Authors
Alharbi, Khawla; Asnayanti, Andi; Do, Anh Dang Trieu; Perera, Ruvindu; Al-Mitib, Layla; Shwani, Abdulkarim; Rebollo, Marco A.; Kidd, Michael T.; Alrubaye, Adnan Ali Khalaf
- Abstract
Simple Summary: Lameness induced by bacterial chondronecrosis with osteomyelitis poses a significant challenge in the poultry industry globally. It is caused by pathogenic bacteria entering the bird's bloodstream via the skin, respiratory tract, or digestive system. These bacteria are then disseminated hematogenously and infest the osteochondrotic crypts from chronic fractures resulting from mechanical stress caused by fast growth rate and heavy body weight, leading to lameness. The objective of this research is to identify the ideal timing for Availa® ZMC supplementation in broiler lameness reduction using an aerosol transmission challenge model, with a hypothesis that providing Availa® ZMC through the initial four weeks of the production cycle will optimally strengthen skeletal bones, improve intestinal integrity, and enhance immune responses. The results show that including 0.15% Availa® ZMC in the broiler diet during the first 28 days is the optimal timing. This approach provides a level of protection against BCO lameness nearly equivalent to that of birds fed with the same inclusion level throughout the entire production cycle. Our prior research demonstrated a 20% to 25% reduction in bacterial chondronecrosis with osteomyelitis (BCO) lameness in broilers with organic Zn, Mn, and Cu (Availa® ZMC) supplementation. Expanding on this, we investigated the optimal timing for Availa® ZMC feeding to mitigate BCO lameness and reduce feed additive costs in the poultry industry. In this study, we compared the application of 0.15% Availa® ZMC for 56 days, the first 28 days, and the last 28 days. The experimental design was a randomized block design involving 1560 one-day-old chicks distributed across two wire-floor pens as BCO source infection and four treatment groups with six replicates. The source of BCO infection exhibited a cumulative lameness incidence of 83%, whereas the negative control group showed a 77% cumulative incidence of lameness (p = 0.125). Administering 0.15% of Availa® ZMC during the initial 28 d resulted in a 41.3% reduction in BCO incidence, significantly different from the supplementation during the last 28 d (p < 0.05). However, this reduction did not differ substantially (p > 0.05) from the 56d application period. Hence, administering 0.15% Availa® ZMC during the first four weeks emerges as the optimal timing protocol, providing a defense against lameness comparable to the continuous supplementation throughout the complete production duration. Implementing this feeding approach reduces the cost of feed additive, promotes the health of skeletal bones, and effectively protects against BCO lameness in broilers, offering a valuable consideration for producers seeking optimal outcomes in the poultry industry.
- Subjects
TRACE elements; BROILER chickens; OSTEOMYELITIS; AEROSOLS; POULTRY industry; POULTRY growth; NEURAL transmission
- Publication
Animals (2076-2615), 2024, Vol 14, Issue 11, p1526
- ISSN
2076-2615
- Publication type
Article
- DOI
10.3390/ani14111526