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Predatory viability of the nematophagous fungus Duddingtonia flagrans on the infective larvae of gastrointestinal nematodes of sheep following storage and refrigeration

Authors :
Vilela, Vinícius Longo Ribeiro
Costa, Paulo Wbiratan Loes da
Silva, Francisca Flávia da
Bezerra, Hermano Manoel Francisco Figueiredo
Oliveira, Leonardo Vinicius Silva de
Dantas, Maysa de Oliveira
Feitosa, Thais Ferreira
Araújo, Jackson Victor de
Braga, Fabio Ribeiro
Source :
Brazilian Journal of Veterinary Research and Animal Science; Vol. 56 Núm. 3 (2019); e154252, Brazilian Journal of Veterinary Research and Animal Science; Vol. 56 No. 3 (2019); e154252, Brazilian Journal of Veterinary Research and Animal Science; v. 56 n. 3 (2019); e154252, Brazilian Journal of Veterinary Research and Animal Science; V. 56 N. 3 (2019); e154252, Brazilian Journal of Veterinary Research and Animal Science, Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP), instacron:USP
Publication Year :
2019
Publisher :
Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia, 2019.

Abstract

O objetivo deste trabalho foi avaliar a viabilidade predatória in vivo do fungo nematófago Duddingtonia flagrans,após armazenamento (36 meses) e refrigeração (2-8 °C). Esta viabilidade foi avaliada utilizando larvas infectantes denematódeos gastrintestinais de ovinos no semi-árido nordestino do Brasil. 16 ovinos Santa Inês com contagem negativade ovos por grama de fezes (GEP) foram divididos em quatro grupos experimentais, compostos por quatro animais.Os péletes foram administrados na dose de 3 g/10 kg de peso vivo (20% de micélio fúngico), e uma única administraçãofoi realizada para cada animal. Grupo I foi administrado péletes que foram armazenados por 36 meses; Grupo II, péletesrecém-produzidos; Grupo III, péletes recém-produzidos que não continham fungos; e o Grupo IV, péletes não foramadministrados, e este foi o grupo controle. As fezes foram coletadas por cinco dias, a cada 24 horas, para análise. Houveuma diminuição significativa no número de larvas infectantes de nematóides ovinos que receberam pellets de D. flagrans,82% foi observado para o Grupo I e 71% para o Grupo II, comparado ao grupo controle. Conclui-se, portanto, queo fungo D. flagrans, peletizado em matriz de alginato de sódio após 36 meses de armazenamento a 2-8 °C, apresentaeficácia na redução do número de larvas infectantes de nematódeos gastrintestinais de ovinos. The objective of this study was to evaluate the in vivo predatory viability of the nematophagous fungus, Duddingtoniaflagrans, after storage (36 months) and refrigeration (2-8 °C). This viability was evaluated using the infective larvaeof gastrointestinal nematodes of sheep in the Northeastern semi-arid region of Brazil. Sixteen Santa Inês sheep withnegative counting of eggs per gram of feces (EPG) were divided into four experimental groups, each group comprised offour animals. The pellets were administered at the dose of 3 g/10 kg of live weight (20% fungal micelyum), and a singleadministration was performed for each animal. Group I was administered pellets that had been stored for 36 months;Group II, freshly produced pellets; Group III, freshly produced pellets that did not contain fungi; and Group IV, pelletswere not administered, and this was the control group. Feces were collected for 5 days, every 24 h for analysis. There wasa significant decrease in the number of infective larvae of sheep nematodes that received D. flagrans pellets in a sodiumalginate matrix, 82% was observed for Group I and 71% for Group II, compared to the control group. It is thereforeconcluded that the fungus, D. flagrans, pelleted in sodium alginate matrix after 36 months of storage at 2-8 °C, showedefficacy in reducing the number of infective larvae of gastrointestinal nematodes of sheep.&nbsp

Details

Language :
English
ISSN :
16784456 and 14139596
Database :
OpenAIRE
Journal :
Brazilian Journal of Veterinary Research and Animal Science; Vol. 56 Núm. 3 (2019); e154252, Brazilian Journal of Veterinary Research and Animal Science; Vol. 56 No. 3 (2019); e154252, Brazilian Journal of Veterinary Research and Animal Science; v. 56 n. 3 (2019); e154252, Brazilian Journal of Veterinary Research and Animal Science; V. 56 N. 3 (2019); e154252, Brazilian Journal of Veterinary Research and Animal Science, Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP), instacron:USP
Accession number :
edsair.od......3056..ddcf75b62cdbf90e5167b63fd274a798