Anthelminthic efficacy of banana crop residues on gastrointestinal nematodes of sheep: in vitro and in vivo tests.
Resistance to anthelminthics is common due to intensive and incorrect use. In searching for alternatives, extracts of banana plant were evaluated for egg hatching inhibition and fecal egg count reduction of sheep nematodes. Aqueous extracts of the leaf, pseudostem, and heart of the banana plant cv. Prata anã were tested at concentrations of 0.31, 0.62, 1.25, 2.5, 5.0, and 10.0 mg ml(-1) in egg hatching inhibition tests. For in vivo analysis, aqueous extracts were evaluated at dosages calculated according to the 10% lethal dose derived from acute toxicity testing in mice. Efficacy was evaluated at two time periods following oral administration. For the banana extracts at 2.5 mg ml(-1), egg hatching was significantly fewer than the negative control, with an LC(50) and LC(90) of 0.19 and 0.84 mg ml(-1), respectively. In vivo analysis for weeks 1 and 2 following a single treatment with aqueous leaf extract showed 33.1% and 32.5% anthelminthic efficacy, respectively. Further research on higher dosages with more frequent administration is needed to evaluate the potential for utilizing banana plant residues in gastrointestinal nematode control.
Instituto de Ciências Agrárias, Universidade Federal de Minas Gerais, Av Universitária 1000, Bairro Universitário, Montes Claros, MG, 39400-006, Brazil.
Flávia Aparecida
FA
Nogueira
Lincoln Nunes
LN
Oliveira
Rayana Brito
RB
da Silva
Patrícia Silva
PS
Nery
Gercino Ferreira
GF
Virgínio
Luciana Castro
LC
Geraseev
Eduardo Robson
ER
Duarte
D000818:Animals; D000871:Anthelmintics / Q000008:administration & dosage / Q000009:adverse effects / Q000302:isolation & purification / Q000494:pharmacology*; D005243:Feces / Q000469:parasitology; D006373:Helminthiasis / Q000469:parasitology; D006374:Helminthiasis, Animal / Q000469:parasitology*; D007410:Intestinal Diseases / Q000469:parasitology / Q000662:veterinary*; D007411:Intestinal Diseases, Parasitic; D051379:Mice; D028521:Musa / Q000737:chemistry*; D009348:Nematoda / Q000187:drug effects*; D009349:Nematode Infections / Q000469:parasitology*; D010270:Parasite Egg Count; D010936:Plant Extracts / Q000008:administration & dosage / Q000009:adverse effects / Q000302:isolation & purification / Q000494:pharmacology*; D012756:Sheep; D016019:Survival Analysis
D000871:Anthelmintics; D010936:Plant Extracts