Aflatoxicosis in poultry: A review. Article (PDF Available) · September with Reads. Cite this publication. Ansuman Mohapatra at. Aflatoxins (AF) are a class of mycotoxins, produced by fungal species of the genus Aspergillus (flavus and parasiticus) and Penicillium puberulum, that are often. Abstract. Poultry has commonly been considered highly susceptible to aflatoxins. However, among domestic fowl there is wide variability in specific species sen.

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In many cases of aflatoxicosis there was an increase in leg problems, leg weakness, reduced bone strength, short shank, and leg deformity.

Several studies designed to evaluate the effect of aflatoxins in chickens have shown the characteristic low-dose aflatoxicosiz high-dose inhibition pattern of the hormetic dose-response.

Mycotoxicoses should be differentiated from mycoses which are systemic diseases caused by invasion of growing fungi into living tissues, initiating mechanical destruction. Abadeen, Zain Ul, et al. Evaluation of turmeric Curcuma longa effect on biochemical and pathological parameters of liver and kidney in chicken aflatoxicosis.

The incidence of hepatocellular tumors, particularly in ducklings, is considered to be one of the serious consequences of aflatoxicosis. In view of the important economic and public health implications of the hormetic response, it is necessary to investigate the potential occurrence of hormetic responses on commercial animal production in general.

In some cases, there were anemia and abnormal blood clotting, increased incidence of bruising and down grading, and nervous syndrome abnormal behavior.

When they are simultaneously present, their interactive effects can be classified as additive, synergistic, or antagonistic. Hormesis is a dose-response phenomenon characterized by low-dose stimulation and high-dose inhibition. Trichothecenes toxicosis Trichothecenes mycotoxins affect actively dividing cells, such as those lining the gastrointestinal tracts, skin, lymphoid and erythroid cells.

Abstract Poultry has commonly been considered highly susceptible to aflatoxins. In layers and parent stocks, there was regression of ovaries and atrophy of oviduct.

Reproduced with permission from the Poultry Science Association from Richardson et al. Aflatkxicosis is still speculative why chickens respond in this way to dietary exposure to aflatoxins. Histological lesions, cell cycle arrest, apoptosis and T cell subsets changes of spleen in chicken fed aflatoxin-contaminated corn.

These diseases may vary on the severity, target sites, and mechanism of toxicity. Their effects are diverse, varying from immune suppression to death.


Toxic effects of mycotoxins can occur at toxin concentration below detection limits. In male broilers, there were decreased comb and testes weights, whereas in female broilers, there were increased comb, bursa Faricius, and ovary weights, and enlargement of oviduct.

The Common Clinical Signs and Pathological Lesions of Mycotoxicoses in Poultry –

aflatoxicosus Isolate the bird from the flock and place in a safe, comfortable, warm location your own chicken “intensive care unit” with easy access to water and food. Each clear circle corresponds to the mean body weight of 6 groups aflatocicosis 15 birds per treatment. In general, multiple independent investigations have shown that such aflatoxin consumption affects growth in a hormetic-like biphasic manner with a low dose stimulation and a high dose inhibition.

Clinical signs and pathological lesion related to mycotoxins are closely related to poultry species, type of mycotoxins, dose ingested, and duration of exposure.

Day and John E. The following section presents the common clinical signs and pathological lesions related to the most frequent mycotoxins found in poultry operations, especially chicken farms in Indonesia, include aflatoxins, trichotecenes T-2 toxin, DONochratoxin, fumonisins, and zearalenone. Clinical signs are closely related to pathological lesions on primary target organs which subsequently altered functions of other related vital organs.

This toxigenic fungus is known to produce a group of extremely toxic metabolites, of which aflatoxin B1 AFB1 is most potent. Blain; Aflatoxicosis in Chickens Gallus gallus: Environmental stresses drought, prolonged rain, etc. Chronic toxicity in those birds is characterized by loss of weight, decline in feed efficiency, drop in egg production and increased susceptibility to infections.

Most mycotoxins can cause lipid peroxidation, damage of membrane structures and their functions, induces apoptosis programmed cell death leading to cellular necrosis Surai,Fink-Gremmels, Mycotoxicoses are difficult to diagnose because of a great variation in possible symptoms and target organs as well as pathological lesions. Foods known to be at a high risk of aflatoxin contamination include corn, cottonseed, peanuts, sorghum, tree nuts, and wheat. However, these low levels of mycotoxins may induce subclinical diseases in poultry, which indicated that there is no existing save level for mycotoxins Borutova, Another common problem with mycotoxins is the contamination of commodities with masked mycotoxins which cannot be detected by routine laboratory analysis Vendl et al.

Grains, such as corn, wheat, soybean, rice and their by-products used for the production of poultry feed are shared by humans and animals. Unfortunately these conjugate mycotoxins cannot be detected by most routine analysis.


The other consistent lesions in aflatoxicosis were found in bursa Fabricius, thymus, and spleen which appeared smaller than normal Figure 3 ; in male parent stocks, the size of testes was significantly reduced Figure 4.

AFLATOXICOSIS – Diseases of Poultry – The Poultry Site

Sometimes this organ was very small, rounded, and rubbery which very often complicates with ascites and hydropericardium. Hormesis represents a strategy for the animal to optimize resource allocation and may occur through 2 different mechanisms of action: Increasing the crude protein content and supplementation of additional levels of riboflavin, pyridoxine, folic acid and choline showed protective effect against aflatoxicosis Antioxidants like BHT and l-napthoflavone, vitamin C and vitamin E offer protection against aflatoxin induced genotoxicity in in vitro studies.

Veterinary advice should be sought from your local veterinarian before applying any treatment or vaccine. They are chemically stable due to their chemical structure and low molecular weight. The common pathological lesions related to OTA were seen in the kidneys, which were extremely swollen and pale in color with very distended ureters due to the accumulation of urates Figure 11 ; atrophy of bursa Fabricius, thymus, and spleen; and soft or severely fragile of bones.

Samples of feed and ingredients should be collected and promptly submitted for laboratory analysis.

An overview of aflatoxicosis of poultry: its characteristics, prevention and reduction.

Citing articles via Web of Science The common clinical signs related to aflatoxicosis in chickens, include decreased feed intake, poor growth and inhomogeneous flocks Figure 1increased mortality, abnormal pigmentation shank, feetfeed passage, and afatoxicosis feed conversion rate FCR.

Related articles in Web of Science Google Scholar. In vitro ability of beer fermentation residue and yeast-based products to bind aflatoxin B1. Remove source of potential toxin source to prevent further illness among other flock members.

Therefore, the formation of mycotoxins in the field is difficult to control. A study conducted with a large number of doses, spaced at low intervals, has shown the typical inverted J-shaped curve observed in studies where the end-point is adversely affected by the exposure to the xenobiotic Figure 2.