H. contorts is a major parasite of sheep and goats cattle( sheep and goats, cattle ). H. placei is a parasite of cattle sheep( cattle, sheep ).
What is the prepatent period for sheep and cattle?
Sheep: 18 days Cattle: 25 - 28 days
Sheep: 25-28 days Cattle: 18 days
Sheep: 14 days Cattle: 20 - 25 days
Sheep: 28 days Cattle: 15 - 18 days
How does the larvae increase its environmental resistance for survival?
L3 retains the cuticle from L2
Nutrient stores
High temperature tolerance
Carried by paramedic host
At what stage does the infective L3 exsheath?
Rumen
Abomasum
Omasum
Large intestine
What is the infective L3 stage relatively intolerant to?
Heat and desiccation
Cold and moisture
Cold and desiccation
Heat and moisture
What are the clinical signs associated with hyperacute haemonchosis?
Severe hemorrhagic gastroenteritis
Anaemia
Dark feces
Diahorrea
Weight loss
What are the clinical signs associated with acute haemonchosis in sheep?
Weakness and lethargy
Hypoproteinemia
Black feces
Bottle jaw
High fecal egg counts
What are the clinical signs associated with chronic haemonchosis in sheep?
Progressive weight loss
Emaciation
Anorexia
Low fecal egg counts
H. contortus is the most important helminth parasite of small ruminants
What are the best diagnostic tools for detecting Haemonchus?
Fecal float
ELISA
Clinical signs
Serology
At what stage does the larvae penetrate between the gastric epithelial cells and emerge?
L4 - L5
L3-L4
L3
L4
L5
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