Control of sheep gastrointestinal nematodes on pasture in the tropical semiarid region of Brazil, using Bioverm® (Duddingtonia flagrans)

Rodrigues, Jossiara Abrante; Roque, Francisco Leonardo; Lima, Brendo Andrade; Filho, Geraldo Moreira Silva; Oliveira, Clarisse Silva Menezes; Sousa, Luana Carneiro; Silva, Ana Luzia Peixoto; Lima, Estefany Ferreira; Feitosa, Thaís Ferreira; Braga, Fábio Ribeiro; Araújo, Jackson Víctor de; Vilela, Vinícius Longo Ribeiro

doi:10.1007/s11250-022-03181-z

Cited by 9 publications

(4 citation statements)

References 25 publications

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“…and Oesophagostomum sp. In other studies, such as by Rodrigues et al [13] and Vieira et al [14] in southeastern Brazil, Haemonchus sp. was also the most prevalent.…”

Section: Resultsmentioning

confidence: 70%

Efficacy of a Fungal Formulation with the Nematophagous Fungus Pochonia chlamydosporia in the Biological Control of Bovine Nematodiosis

et al. 2022

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In the control of bovine worms, biological control by nematophagous fungi stands out, especially Pochoniachlamydosporia which causes the destruction of helminth eggs. This study aims to test the effectiveness of a formulation containing the nematophagous fungus Pochonia chlamydosporia isolated for the biological control of bovine nematodiosis. Twelve cattle were divided into two groups: control group (GC) and the group that received the formulation (GT). Feces and pasture samples were collected for the research of gastrointestinal nematodes. Lung worms and trematodes were investigated. The animals were weighed monthly. The averages of temperature and rainfall were recorded. The supply of the fungus Pochonia chlamydosporia was not effective in reducing the eggs per gram of feces of gastrointestinal nematodes (EPG) of the animals, not differing statistically (p > 0.05) between the groups. The mean values of larvae recovered in the pasture did not differ significantly (p > 0.05). The genus Haemonchus sp. was the most prevalent. There was no correlation between the number of larvae with temperature and rainfall (p > 0.05). There was a statistically significant difference (p < 0.05) in the penultimate weighing of the experiment. The formulation containing Pochonia chlamydosporia was not efficient in the biological control of bovine gastrointestinal nematodes.

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“…and Oesophagostomum sp. In other studies, such as by Rodrigues et al [13] and Vieira et al [14] in southeastern Brazil, Haemonchus sp. was also the most prevalent.…”

Section: Resultsmentioning

confidence: 70%

Efficacy of a Fungal Formulation with the Nematophagous Fungus Pochonia chlamydosporia in the Biological Control of Bovine Nematodiosis

et al. 2022

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“…The most significant effect has so far been shown by the fungus D. flagrans, 37.6-91.5% depending on the study (Szewc et al, 2021). For this reason, there is already a commercially available preparation based on this mushroom in Brazl, which has shown in vitro effectiveness against gastrointestinal nematodes of sheep, but also cattle and horses (Rodrigues et al, 2022). Furthermore, some strains of Bacillus thuringiensis that produce the insecticidal δ-endotoxin have shown high in vitro efficacy against adult H. contortus, T. colubriformis and O. circumcinta (Worku et al, 2017;Kotze et al, 2005).…”

Section: Biological Controlmentioning

confidence: 99%

Novel Strategies for the Control of Gastrointestinal Nematodes in Sheep

ŠTRBAC,

KRNJAJIĆ,

STOJANOVIĆ

et al. 2023

VJRS

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Gastrointestinal nematodes are very important parasites of domestic animals, especially in small ruminants. In sheep, diseases usually have a subclinical form with a decrease in body weight and production, and sometimes there can be visible clinical symptoms such as anorexia, anemia, severe diarrhea and protein loss, all of which together can lead to death. Commercial drugs such as benzimidazole and macrocyclic lactones have been successfully used for decades to control these parasites. However, the irrational application of these drugs has led to the development of anthelmintic resistance, a decrease in their effectiveness and consequent economic losses that threaten the sustainability of sheep breeding. In addition, the use of commercial preparations is also associated with the residues in animal products and the environment, and there is also an increase in the price of these preparations. For this reason, novel strategies for controlling of these parasites are actively seeking, with the goal of establishing an integrated approach that involves the application of several different strategies. On the one hand, these include strategies for the rational application of commercial preparations based on refugia (targeted treatments, targeted selective treatments), as well as the combination and rotation of anthelmintics from different chemical groups. On the other hand, an integrated approach implies the use of different alternative strategies such as genetic selection of animals naturally resistant to nematodes, rational management of pastures, balanced nutrition with supplementary nutrients, biological control (use of fungi, bacteria, etc.), development of vaccines as well as the use of botanical preparations (plants and their products such as extracts and essential oils). Various studies have proven the effectiveness of the mentioned strategies in the control of gastrointestinal nematodes of sheep, whereby the best results are achieved by their combined application. Thus, it is possible to slow down the development and spread of anthelmintic resistance, as well as achieve sustainable control of these parasites and reduce economic losses.

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“…The product Bioverm ® contains A. flagrans spores and is commercially available in Brazil. The product reduced the nematode egg counts per gram of faeces by around 75% in a recent 6-months study on controlling gastrointestinal nematodes in sheep (Rodrigues et al, 2022). Initial trials with potted crop plants and in greenhouses showed the potential of NTF against plant parasitic nematodes.…”

Section: Introductionmentioning

confidence: 98%

Establishment of Arthrobotrys flagrans as biocontrol agent against the root pathogenic nematode Xiphinema index

Wernet¹,

Fischer²

2022

Environmental Microbiology

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Plant-parasitic nematodes cause devastating agricultural damage worldwide. Only a few synthetic nematicides can be used and their application is limited in fields. Therefore, there is a need for sustainable and environmentfriendly alternatives. Nematode-trapping fungi (NTF) are natural predators of nematodes. They capture and digest them with their hyphae and are starting to being used as bio-control agents. In this study, we applied the NTF Arthrobotrys flagrans (Duddingtonia flagrans) against the wine pathogenic nematode Xiphinema index. A. flagrans reduced the number of X. index juveniles in pot cultures of Ficus carica, an alternative host plant for X. index, significantly. Sodium-alginate pellets with A. flagrans spores were produced for vineyard soil inoculation under laboratory conditions. The NTF A. conoides, A. musiformis and A. superba were enriched from several soil samples, showing their natural presence. Trap formation is an energyconsuming process and depends upon various biotic and abiotic stimuli. Here, we show that bacteria of the genus Delftia, Bacillus, Pseudomonas, Enterobacter and Serratia induced trap formation in NTF like A. conoides and A. oligospora but not in A. flagrans in the absence of nematodes. The application of NTF along with such bacteria could be a combinatorial way of efficient biocontrol in nematode-infested soil.

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Control of sheep gastrointestinal nematodes on pasture in the tropical semiarid region of Brazil, using Bioverm® (Duddingtonia flagrans)

Cited by 9 publications

References 25 publications

Efficacy of a Fungal Formulation with the Nematophagous Fungus Pochonia chlamydosporia in the Biological Control of Bovine Nematodiosis

Efficacy of a Fungal Formulation with the Nematophagous Fungus Pochonia chlamydosporia in the Biological Control of Bovine Nematodiosis

Novel Strategies for the Control of Gastrointestinal Nematodes in Sheep

Establishment of Arthrobotrys flagrans as biocontrol agent against the root pathogenic nematode Xiphinema index

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