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- Title
Eficacia antiparasitaria in vitro del extracto de quebracho (Schinopsis balansae) sobre larvas infectantes de Haemonchus contortus de ovinos.
- Authors
Vergara, D.; Sagüés, F.; Passucci, J.; Späth, E. J.; Lloberas, M. M.; Saumell, C. A.; Moreno, F. C.
- Abstract
The objective of this work was to evaluate in vitro efficacy of the quebracho extract (Schinopsis spp.), rich in condensed tannins, against H. contortus in sheep, since there is evidence that this tanninsthese tannins can reduce egg excretion, fecundity of females and the burden of adult parasites. A larval migration inhibition (IML) test with 3 different concentration (5 mg/ml, 15 mg/ml, and 30 mg/ml) was used to evaluate the in vitro anthelmintic effect upon iInfective H. contortus larvae, from a susceptible strain to all chemical groupswere utilized with 3 diferentconcentration (5mg/ml, 15mg/ml, and 30mg/ml). The effect of the treatments was submitted to a variance analysis and the estimation of the differences between groups was evaluated using LSD Fisher test. Results from the in vitro test, revealed a reduction of the larval migration that varies from 74% to 80%, at the concentrations between 5 mg/ml to 30 mg/ml. From the analysis of variance, significant differences appear between treatments (p = 0,0494). AfterWhen performing the mean comparison test were performed, significant differences (p < 0,05) were found between the migration averages at dilutions of 5 mg/ml and 15 mg/ml, and between 5 mg/ml and 30 mg/ml, while were no't detected significant differences between the dilution of 15 mg/ml and 30 mg/ml. These results indicated that quebracho extract at the dilutions evaluated in vitro showed anthelmintic activity on L3 susceptible to H. contortus. However, it is necessary to conduct further studies in vivo to demonstrate an anthelmintic effect in sheep.
- Subjects
ANALYSIS of variance; TANNINS; TREATMENT effectiveness; SHEEP; FERTILITY; EXCRETION; SHEEP breeding
- Publication
Revista de la Facultad de Medicina Veterinaria y de Zootecnia, 2021, Vol 68, Issue 3, p189
- ISSN
0120-2952
- Publication type
Article
- DOI
10.15446/rfmvz.v68n3.99899