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Experimental ochratoxicosis in broiler chickens.
M A Elaroussi1, F R Mohamed, E M El Barkouky
1Biological Applications Department, Nuclear Research Center, Atomic Energy Authority, Abou-Zaabal, Egypt. m_elaroussi@yahoo.com
Avian Pathology : Journal of the W.V.P.A
|July 21, 2006
Summary
Ochratoxin A (OTA) contamination in broiler chicken feed significantly harms growth, immunity, and blood health. Even moderate OTA levels cause anemia and reduced performance, posing a threat to the poultry industry.
Area of Science:
- Poultry Science
- Toxicology
- Animal Nutrition
Background:
- Mycotoxins, such as ochratoxin A (OTA), are common contaminants in animal feed.
- OTA poses a significant threat to the poultry industry, impacting broiler performance and health.
Purpose of the Study:
- To investigate the toxicity signs of ochratoxin A (OTA) in male broiler chickens.
- To assess the impact of different OTA levels on broiler growth, organ weights, feed intake, blood parameters, and immunity.
Main Methods:
- Male broiler chicks were fed diets containing 0, 400, or 800 ppb OTA for five weeks.
- Evaluated parameters included body weight, organ weights (gizzard, thymus), feed consumption, feed conversion ratio, mortality, thyroid activity, blood profile, and immune responses.
Main Results:
- OTA exposure significantly reduced body weight, thymus weight, feed consumption, feed conversion ratio, and thyroxine levels.
- Anemia was observed, indicated by decreased red blood cell count, packed cell volume, and hemoglobin.
- Immune responses (humoral and cell-mediated) and white blood cell counts were significantly reduced in OTA-fed groups.
Conclusions:
- Ochratoxicosis negatively impacts broiler chickens, causing reduced growth, anemia, and suppressed immunity.
- The severity of toxic effects is dose-dependent and increases over time.
- Understanding these effects is crucial for diagnosing ochratoxicosis and mitigating its economic impact on the poultry industry.