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*Grows on Sabauraud's Dextrose agar and Blood agar
*Grows on Sabauraud's Dextrose agar and Blood agar
==Aspergillosis==
==Aspergillosis==
*Worldwide
*Widely found in nature
*Widely found in nature
**Colonise a wide range of substrates under different environmental conditions
**Abundant in hay, straw and grain which have heated during storage
*Common laboratory contaminants
*Common laboratory contaminants
*Pathogenic species include ''Aspergillus fumigatus, A. flavus, A. nidulans, A.niger'' and ''A. terreus''
*Pathogenic species include ''Aspergillus fumigatus, A. flavus, A. nidulans, A.niger'' and ''A. terreus''
*May cause primary or secondary disease
**Infection may be acute, chronic or benign
*Avians:
*Avians:
**Spores are inhaled
**Spores are inhaled
**Yellow nodules in the [[Avian Respiration - Anatomy & Physiology#Avian Lungs|lungs]] and [[Avian Respiration - Anatomy & Physiology#Air Sacs|air sacs]]
**Yellow nodules in the [[Avian Respiration - Anatomy & Physiology#Avian Lungs|lungs]] and [[Avian Respiration - Anatomy & Physiology#Air Sacs|air sacs]]
**The acute form usually affects young birds and is rapidly fatal (within 24-48 hours)
***Signs include diarrhoea, listlessness, pyrexia, loss of appetite and loss of condition
***Sometimes convulsions may occur
***Resembles Pullorum disease
**The chronic form usually occurs in adult birds and is sporadic, presenting with milder clinical signs
*Cattle:
*Cattle:
**Infection can cause abortion and ocular infections
**Infection can cause abortion and ocular infections
**Infections involve the [[Female Reproductive Tract -The Uterus - Anatomy & Physiology|uterus]], [[Foetal Membranes - Anatomy & Physiology|fetal membranes]] and fetal skin
**Infections involve the [[Female Reproductive Tract -The Uterus - Anatomy & Physiology|uterus]], [[Foetal Membranes - Anatomy & Physiology|fetal membranes]] and fetal skin
**Lesions are usually up to 2mm in diameter and contain asteroid bodies with a germinated spore in the centre
***Acute infection causes miliary lesions
***Chronic infections causes granulomatous and calcified lesions
*Horses:
*Horses:
**White colonies intitially which turn green, then dark green, flat and velvety
**White colonies intitially which turn green, then dark green, flat and velvety
**Colony colour varies with species
**Colony colour varies with species
*Also grows on Czapek-Dox agar and 2% malt extract agar supplemented with antibacterial antibiotics
*Microscopically:
*Microscopically: