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Nunes GT, Corrêa DC, Chitolina MB, da Rosa G, Pereira RCDF, Cargnelutti JF, Vogel FSF. Efficacy Evaluation of a Commercial Formulation With Duddingtonia Flagrans in Equine Gastrointestinal Nematodes. J Equine Vet Sci 2023; 131:104930. [PMID: 37739142 DOI: 10.1016/j.jevs.2023.104930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 08/15/2023] [Accepted: 09/16/2023] [Indexed: 09/24/2023]
Abstract
The indiscriminate use of antiparasitics for the treatment of helminths in horses has caused the ineffectiveness of commonly used chemical active principles, therefore, new alternatives such as the use of helminthophagous fungi have been studied. In this context, this study aimed to evaluate the in vitro efficacy of the commercial formulation Bioverm, composed of the fungus Duddingtonia flagrans strain AC001, in the reduction of gastrointestinal nematode larvae in equine feces. In coproculture, the genus Cyathostomum sp. was the most prevalent in the analyzed samples. The commercial formulation with D. flagrans demonstrated effectiveness in the predation of Cyathostomum sp. in tests. The recommended dose of 0.4 g, containing 105 chlamydospores per gram of product, reduced larvae by 44.23%, while the extrapolated dose of 1.0 g with the same concentrations of chlamydospores (105/g) resulted in a reduction of 57.20%, indicating the effectiveness of the product in controlling infective larvae.
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Affiliation(s)
- Gabriela Tormes Nunes
- Departamento de Medicina Veterinária Preventiva, Laboratório de Bacteriologia (LABAC), Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Diego Cristiano Corrêa
- Departamento de Medicina Veterinária Preventiva, Laboratório de Bacteriologia (LABAC), Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | | | - Gilneia da Rosa
- Departamento de Medicina Veterinária Preventiva, Laboratório de Doenças Parasitárias (LADOPAR), Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | | | - Juliana Felipetto Cargnelutti
- Departamento de Medicina Veterinária Preventiva, Laboratório de Bacteriologia (LABAC), Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Fernanda Silveira Flôres Vogel
- Departamento de Medicina Veterinária Preventiva, Laboratório de Doenças Parasitárias (LADOPAR), Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil.
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Rodrigues JA, Roque FL, Lima BA, Silva Filho GM, Oliveira CSM, Sousa LC, Silva ALP, Lima EF, Feitosa TF, Braga FR, Araújo JV, Vilela VLR. Control of sheep gastrointestinal nematodes on pasture in the tropical semiarid region of Brazil, using Bioverm® (Duddingtonia flagrans). Trop Anim Health Prod 2022; 54:179. [PMID: 35511381 DOI: 10.1007/s11250-022-03181-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 04/22/2022] [Indexed: 11/28/2022]
Abstract
We aimed to evaluate a Brazilian commercial formulation of the fungus Duddingtonia flagrans (Bioverm®) for controlling gastrointestinal nematodes in sheep kept on native pasture in the Caatinga biome, in the semiarid region of Brazil. Twenty ewes, aged between 12 and 18 months, were divided into two groups. In the treated group, each animal received 1 g of the Bioverm® product for each 10 kg of live weight, daily, together with commercial feed, for 6 months. In the control group, the animals received feed without Bioverm®. Each group remained throughout the experiment in a 1.2-ha paddock. Monthly counts of eggs per gram (EPG) of feces, fecal cultures, packed cell volume (PCV), weight measurements, and collection of leaf mass from the pasture were performed. There was greater reduction in EPG, greater weight gain, and less infestation by infective larvae in the paddock of the Bioverm® group, compared with the control group (p < 0.05). There was no significant difference (p ≥ 0.05) in the mean PCV percentage between the Bioverm® and control groups. In coprocultures, Haemonchus sp. was the most prevalent helminth. Bioverm® (D. flagrans) was efficient for biological control of sheep gastrointestinal nematodes in the semiarid region of Brazil.
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Affiliation(s)
- Jossiara Abrante Rodrigues
- Programa de Pós-Graduação Em Ciência E Saúde Animal, Universidade Federal de Campina Grande-UFCG, Patos, Paraiba, Brazil
| | - Francisco Leonardo Roque
- Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil
| | - Brendo Andrade Lima
- Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil
| | - Geraldo Moreira Silva Filho
- Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil
| | - Clarisse Silva Menezes Oliveira
- Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil
| | - Luana Carneiro Sousa
- Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil
| | - Ana Luzia Peixoto Silva
- Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil
| | - Estefany Ferreira Lima
- Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil
| | - Thais Ferreira Feitosa
- Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil
| | - Fábio Ribeiro Braga
- Departamento de Medicina Veterinária, Universidade Vila Velha, UVV, Vila Velha, Espirito Santo, Brazil
| | - Jackson Victor Araújo
- Departamento de Veterinária, Universidade Federal de Viçosa, UFV, Vicosa, Minas Gerais, Brazil
| | - Vinícius Longo Ribeiro Vilela
- Programa de Pós-Graduação Em Ciência E Saúde Animal, Universidade Federal de Campina Grande-UFCG, Patos, Paraiba, Brazil. .,Departamento de Medicina Veterinária, Instituto Federal de Educação, Ciência E Tecnologia da Paraíba, IFPB, Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, Sousa, Paraiba, ZC 58800-970, Brazil.
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Predation of the fungus Duddingtonia flagrans on infective larvae of gastrointestinal nematodes from heifers in a silvopastoral system under shaded and sunny conditions. J Helminthol 2022; 96:e20. [PMID: 35257651 DOI: 10.1017/s0022149x22000128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The objective of this study was to evaluate the predatory activity of the nematophagous fungus Duddingtonia flagrans on infective larvae of gastrointestinal nematodes from dairy heifers in different conditions (shaded and sunny) of a silvopastoral system (SPS) on an agroecological farm. Ten Jersey heifers were divided into two groups: treated (received pellets containing fungus); and control (received pellets without fungus). Twelve hours after fungus administration, faeces samples were collected for in vitro efficacy tests. The animals then remained for 8 h in the experimental pasture area. At the end of this period, 20 faecal pads (10 treated and 10 control) were selected. Pasture, faecal pad and soil collections occurred at intervals of seven days (d), totalling four assessments over 28 d. To evaluate the influence of the conditions shaded and sunny, we registered the condition of the location of each faecal pad per hour. After 12 h of gastrointestinal transit in dairy heifers, a reduction of 65% was obtained through the in vitro test. The treated group presented a lower number of infective larvae (L3) in the faecal pad and upper pasture. Differences in numbers of L3 were observed between the conditions (sunny and shaded) in the faecal pad of the control group; while in the treated group there were no differences between the conditions. The predatory activity of the fungus was efficient over time in the shaded and sunny conditions of an SPS, decreasing the parasite contamination during the pasture recovery time in a subtropical climate.
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