Atividade anti-helmíntica in vitro do extrato aquoso de Hyptis suaveolens sobre nematoides gastrintestinais de ovinos.

Anthelmintic resistance has been a major obstacle in sheep farming, given this problem, other tools have been used as an alternative to control gastrointestinal parasites, among them, herbal medicine with the use of vegetable oils and extracts stands out. The objective of the present work was to evaluate in vitro the bioactivity of the aqueous extract of the leaves of Hyptis suaveolens (L.) Poit (Lamiaceae) on gastrointestinal nematodes of sheep. Three dilutions of the aqueous extract were tested: 100%, 50% and 25% with three repetitions per treatment, forming two control groups, a negative control (distilled water) and positive control (Albendazole). The negative control larvae cultures revealed infective larvae of the genus Haemonchus, Oesophagostomum and Trichostrongylus, with a predominance of the first genus. The aqueous extract of the leaves of H. suaveolens at a concentration of 100% showed effective in vitro bioactivity against gastrointestinal nematodes in sheep. [ABSTRACT FROM AUTHOR]