د "جيارډيا لامبليا" د بڼو تر مېنځ توپير

Distinguishing features of the trophozoites are large karyosomes and lack of peripheral chromatin, giving the two nuclei a halo appearance. This is a primitive form of protozoa and also lacks mitochondria.

 

Nomenclatures for Giardia species are hard since humans and other animals appear to have morphological identical parasites. Cats can be cured easily, lambs usually just lose weight, but in calves the parasites can be fatal and often are not responsive to antibiotics or electrolytes. Carriers among calves can also be asymptomatic. Dogs have the most problems since usually 30% of the population under one year old is infected in kennels. It is more a "puppy problem" than an adult one.