Famacha guide as an individual clinic parameter for Haemonchus contortus infection in small ruminants

The objective of this research was to evaluate the Famacha method as an auxiliary strategy for the control of the parasite Haemonchus contortus in sheep and goats in Brazil. The main characteristic of this method is the identification of resistant and resilient animals within the flock, selecting animals that do not require drug treatment. Haematocrit levels and fecal eggs per gram (EPG) were measure as well as the clinical examination. At the end of the experiment a considerable decrease (75.6%) in antiparasitic drug usage was determined in sheep, when compared to the prophylactic control management, treating all flock in 30 days intervals in previous years. Although the Famacha guide is indicated to be used in goats, some particularities have to be observed to obtain better results. The Famacha method may be applicable in Brazil with the aim of reducing drug usage and prolonging its lifespan.

sheep; goats; Haemonchus contortus; Famacha; hematocrit; EPG