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Evaluation of XPC and prototypes on aflatoxin-challenged broilers
G D Osweiler1, S Jagannatha, D W Trampel
1Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, USA. osweiler@iastate.edu
Poultry Science
|August 17, 2010
Summary
Certain Saccharomyces cerevisiae products, like Prototype B and XPC2, protected broiler chicks from aflatoxin-induced liver damage and maintained body weight gain, suggesting benefits beyond simple adsorption.
Area of Science:
- Animal Science
- Poultry Nutrition
- Mycotoxicology
Background:
- Aflatoxins in poultry feed pose significant risks to bird health and performance.
- Various feed additives are explored to mitigate the negative effects of mycotoxins.
- Understanding the mechanisms of action for these additives is crucial for effective application.
Purpose of the Study:
- To evaluate the efficacy of different commercial products and prototypes in mitigating aflatoxin toxicity in broiler chickens.
- To assess the impact of these additives on growth performance, feed intake, and liver histopathology.
- To investigate potential mechanisms of action, particularly for Saccharomyces cerevisiae-based products.
Main Methods:
- Male broiler chicks were assigned to eight dietary treatment groups, including controls and various additive levels.
- Birds were challenged with a consistent level of aflatoxin (2,280 ng/g) for 28 days.
- Growth parameters (body weight, feed intake), feed efficiency, liver weight, and liver histopathology were assessed.
Main Results:
- Broiler chickens fed Prototype B (0.15%) and XPC2 (0.125%) showed no significant reduction in body weight gain compared to the negative control.
- These groups also exhibited significantly reduced liver vacuolar lesions, similar to the negative control, indicating protection against aflatoxin damage.
- Other treatments, including a standard ameliorator and Prototype A, showed varying degrees of protection but were less effective than Prototype B and XPC2.
Conclusions:
- Specific Saccharomyces cerevisiae fermentation products (Prototype B, XPC2) effectively protected broiler chickens against aflatoxin-induced growth depression and liver lesions.
- The protective effects of XPC (a non-adsorbent product) suggest mechanisms beyond mycotoxin adsorption, possibly involving immune modulation or gut health improvement.
- These findings highlight the potential of targeted supplementation with specific yeast products to enhance poultry resilience to mycotoxin challenges.
