Ethnoveterinary medicines used by smallholder farmers for treatment of goat ailments in Chikomba, Murewa, Gutu and Mwenezi districts of Zimbabwe : is there cultural consensus in use practices?

Abstract

ETHNOPHARMACOLOGICAL RELEVANCE : Zimbabwe is a key biodiversity domain in sub-Saharan Africa and ethnoveterinary medicines play an integral role in livestock health. However, knowledge on whether plants are used by only a small proportion of people or whether similar uses exist in different communities and in a more regional context is incompletely documented. AIM OF THE STUDY : Firstly, the study documented plant-based complementary medicines used for managing goat ailments. Secondly, culturally important medicinal plant species with highest use-reports (UR) as well as botanical and therapeutic consistency were computed. Thirdly, details on whether similar ethnobotanical practices exist in different communities as an indicator of information exchange were explored. MATERIALS AND METHODS : A total of 200 informants from Gutu, Chikomba, Murewa and Mwenezi districts of Zimbabwe were interviewed. Plant identification was done at the National Herbarium and Botanic Gardens of Zimbabwe. Use-reports were generated and subjected to analysis using Analysis of Variance (ANOVA) in IBM SPSS statistical software. RESULTS : The impact of parasites and diseases was ranked as the major goat production constraint. A total of 160 homemade remedies were documented, 151 of which comprised a single plant species (Homemade Single Species Herbal Remedy Reports, HSHR). The 151 HSHR prepared using 75 plant species belonging to 34 families referred to 401 UR. The foremost used medicinal plant species were from the Fabaceae family (28 HSHR, 19%). Cassia abbreviata was the most cited plant species (6 HSHR, 4%). The category of ecto- and endoparasites had the highest number of UR out of a total of 9 categories (136 UR, 34%). The most frequently used plant species for this category were Solanum campylacanthum (8 UR, 6%) and Strychnos spinosa (6 UR, 4%). Almost similar numbers of UR were computed across communities for 6 disease categories. Nine different combinations (9 HR, 9 UR) comprising mostly of three plant species were reported for various ailments. Baccharoides adoensis and Terminalia sericea were often reported in these combinations for January disease. Highest levels of therapeutic consistency were computed for Aloe vera and Lippia javanica against ectoparasites (10 out of 24 local studies). Interestingly, 28 new medicinal plant species were documented for the first time in Zimbabwe. Again, these were mostly used for ecto-and endoparasites (8 plant species, 29%). CONCLUSIONS : Ethnoveterinary medicines play a pivotal role in management of livestock ailments in rural communities of Zimbabwe. However, attention is warranted to ensure transparency in use practices, as well as to conserve and scientifically validate culturally important medicinal plant species such as Aloe vera and Lippia javanica.