Tuesday 1 December 2009

Mycotoxins levels and symptoms

SUBCLINICAL

GENERAL SYMPTOMS

• Very difficult to see symptoms therefore little or no awareness.
• Often only affects the immune system.
• Many diseases incorrectly diagnosed as the primary problem due to low levels of  
   mycotoxins, which cause immunosupression.
• Vaccines do not work as they should, due to low titers.
• If live vaccine is used there are often many problems.
• Antibiotics as therapeutics do not perform even if used at a higher dosage or for
  longer periods
• Breeders and sows can not pass antibodies to offspring
• Respiratory diseases of unknown origin
• Diseases of unknown origin and / or difficult to diagnose
• 5 ppb of Aflatoxin B1 in feed = 50 ppt of Aflatoxin M1 in Milk
   Somatic cell count in milk.
• Pigmentation of egg yolk and skin is affected by hypocarotenoidaemia caused by  
  mycotoxins.


S U B A C U T E     


PRESENCE


Seasonal: during summer in most countries
Constantly: in warm and humid areas
Imported grain (Cereals) or raw ingredients.
Extreme weather conditions: drought or rainy
Difference in temperature: Day and night ( + / - 8 C)
Infestation of insects
Newly harvested crop with high humidity.


SYMPTOMS


Onset of poor feed conversion rate.
Some metabolic disorders ( reduced energy utilization)
Mortality above increases above usual average
Some feed rejection by animals due to smell.
Increase reproductive problems
Non uniformity in herd
Soft Feaces or Diarrheas
Increase embryonic deaths / abortions
Decrease in the general health and more susceptible to diseases
Decrease in egg or milk production and mycotoxin contamination.

C L I N I C A L  

PRESENCE


On very few occasions mostly in humid and warm countries
In very poor quality controled raw ingredients
Not only problems with mycotoxins but also with other interactants such as oxidation and bacterial contamination
Poor farm management.  


SYMPTOMS


Poor feed conversion rate
Major metabolic disorders
Incdreased  mortality
Feed Rejection
Major reproductive disorders
Many diseases
Organ damages and / or tumors: Kidney, liver, pancreas, lymphatic
Necrosis of digestive system
Ulcers in the mouth
Many embryonic deaths and/or abortions
Poor production of eggs and milk and high mycotoxin contamination.












                                                     Source: Engormix

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