Systemic Mycotoxicosis
Systemic Mycotoxicosis
Practical Overview & Field Action
At a Glance
- Severity Level: High
What You May Notice
- Early Signs: Drop in feed intake, uneven growth, poor feathering ("helicopter chicks"), oral ulcers
- Advanced Symptoms: Progressive loss of body condition, thin-shelled fragile eggs. Targets Gastrointestinal, Hepatic, Renal, and Immune systems.
- Postmortem Findings: Yellow caseous necrotic plaques in oral cavity/esophagus, gizzard erosion (koilin layer), pale swollen greasy liver, swollen kidneys with urates, atrophied bursa/thymus.
Field Verification Checkpoints
- Field Verification: Oral ulcers, gizzard erosions, "helicopter chicks"
- Laboratory Confirmation: Multi-mycotoxin analysis of feed via LC-MS/MS
- Differential Possibilities: Candidiasis, Wet Fowl Pox, Nutritional deficiencies
Prevention & Control Action
- Vaccination Control: Hatchery standard or field boosting
- Biosecurity Action: Raw material screening
Identity
A multi-systemic syndrome caused by concurrent ingestion of multiple mycotoxins (Aflatoxins, Ochratoxins, Trichothecenes) from mold-contaminated feed. Toxins act synergistically to induce severe mucosal contact necrosis, hepatic failure, renal failure, and profound immunosuppression.
Overview
Systemic Mycotoxicosis results from the synergistic effect of multiple low-level mycotoxins in feed. Trichothecenes (T-2) act as severe cytotoxins, causing oral/gizzard necrosis, while Aflatoxins and Ochratoxins damage the liver and kidneys, respectively. This combined assault destroys mucosal barriers and the immune system (bursa/thymus atrophy), triggering devastating secondary bacterial infections (colibacillosis, necrotic enteritis). Management requires raw material screening via LC-MS/MS and feed supplementation with broad-spectrum multi-functional toxin binders.
Structured Facts
Classification
Toxicological > Non-Infectious
Epidemiology
- Prevalence in India: Highly relevant due to feed contamination
- Severity: High
- Affected Species: Poultry
- Affected Age: All age classes; severe in growing broilers
- Transmission: Ingestion of poor storage feed materials
- Mortality: 10% to 50% depending on toxin combination
- Morbidity: High (10% to 50%)
- Economic Importance: High (severe decrease in feed conversion efficiency)
Clinical Signs
- Early/Intermediate: Drop in feed intake, uneven growth, poor feathering ("helicopter chicks"), oral ulcers
- Advanced: Progressive loss of body condition, thin-shelled fragile eggs. Targets Gastrointestinal, Hepatic, Renal, and Immune systems.
- Postmortem Findings: Yellow caseous necrotic plaques in oral cavity/esophagus, gizzard erosion (koilin layer), pale swollen greasy liver, swollen kidneys with urates, atrophied bursa/thymus.
Diagnosis
- Field Diagnosis: Oral ulcers, gizzard erosions, "helicopter chicks"
- Laboratory Tests: Multi-mycotoxin analysis of feed via LC-MS/MS
- Differential Diagnosis: Candidiasis, Wet Fowl Pox, Nutritional deficiencies
Treatment
- Immediate Actions: Withdraw contaminated feed
- Supportive Care: Lipotropic factors (choline/methionine) and vitamins
- Medicines: Multi-functional broad-spectrum mycotoxin binders
- Withdrawal: Not applicable
Prevention
- Vaccination: None (causes widespread vaccine failure)
- Biosecurity: Raw material screening
- Farm Management: Dry storage conditions, prevent fungal growth
Quantitative Data
- Morbidity Rate: 10% to 50%
- Mortality Rate: 10% to 50%
- FCR Impact: Increases by 10% to 30%
Relationships
- Vaccines: None (causes widespread vaccine failure)
- Medicines: Multi-functional mycotoxin binders, Choline, Methionine
- Related Diseases: Aflatoxicosis, Ochratoxicosis
- Predisposing Relationships: Triggers Colibacillosis and Necrotic Enteritis due to mucosal barrier destruction