The nematodes control is carried out with anthelmintics, but the development of resistance has
required the search for alternatives such as medicinal plants. There are popular reports of antiparasitic
activity of Cocos nucifera fruit. The purpose of this study was to evaluate the ovicidal and larvicidal
activity of the liquid of green coconut husk fiber (LGCHF) and butanol extract obtained from
LGCHF on Haemonchus contortus and investigate the chemical compounds present in these extracts.
The in vitro assay was based on egg hatching (EHT) and larval development tests (LDT). The
LGCHF concentrations tested in EHT ranged from 0.15 to 2.5 mg/mL, while in the LDT varied
from 2.5 to 40 mg/mL. The LGCHF butanol extract concentrations used in EHT ranged from 4.06
to 65 mg/mL, whilst in the LDT varied from 5 to 80 mg/mL. The LGCHF and butanol extract
showed 100% ovicidal efficacy at 2.5 and 10 mg/mL, respectively. In higher concentrations, the
larvicidal effect of LGCHF and butanol extract was 81.30 and 99.80%, respectively. Phytochemical
tests revealed the presence of triterpenes, saponins and condensed tannins. These results suggest
the coconut extracts can be useful in gastrointestinal nematodes control of small ruminants. However,
toxicological evaluation and in vivo studies are still necessary.