FAMACHA (FAffa MAlan CHArt) is a selective treatment method for controlling the level of parasitic barber's pole worm (Haemonchus contortus, also known as twisted wireworm) among domesticated small ruminant populations.
In contrast with earlier, more aggressive approaches, under FAMACHA only certain sheep or goats in a flock are selected for treatment.
Selection for treatment is based on the degree of anaemia the animals are displaying in their mucous membranes, which is assessed through a colour guided chart.
[5] The aim of the method is to maintain a sufficient susceptible H. contortus worm population (‘refugia’) on the pasture.
FAMACHA System - American Consortium for Small Ruminant Parasite Control (ACSRPC)