scholarly journals Comparitive efficacy of five anthelmintics against trichostrongylid nematodes in sheep

2006 ◽  
Vol 86 (4) ◽  
pp. 471-477 ◽  
Author(s):  
Hafiz Abubakar Saddiqi ◽  
Abdul Jabbar ◽  
Zafar Iqbal ◽  
Wasim Babar ◽  
Zia-ud-Din Sindhu ◽  
...  
Keyword(s):  
Key Words ◽  
Anthelmintic Resistance ◽  
Gastrointestinal Nematodes ◽  
Untreated Group ◽  
Worm Count ◽  
Reduction Test ◽  
Faecal Egg Count ◽  
Faecal Egg Counts ◽  
Prevalent Species

The efficacy of levamisole, ivermectin and three different preparations of oxfendazole, applied at the recommended rate, were evaluated in flocks of sheep kept at two farms in Thal desert, Pakistan. Sixty animals on each farm were selected randomly on the basis of their weight and egg count of more than 150 eggs per gram of faeces. Three preparations of oxfendazole (fendamex, oxazole, syatamex), levamisole and ivermectin were given to five groups while one untreated group was kept as control. Faecal egg counts, faecal egg count reduction test, postmortem worm count and copro-culture were performed to assess the efficacy of selected anthelmintics. Levamisole and ivermectin preparations reduced (P ≤ 0.05) prevalent species of gastrointestinal nematodes in both flocks. Oxfendazole preparations exhibited low efficacy and some gastrointestinal nematodes (Haemonchus and Trichostrongylus) were suspected for resistance against these preparations, with resistance more pronounced in oxazole followed by systamex and fendamex. It was concluded that all oxfendazole preparations had low efficacy with suspicion for anthelmintic resistance while levamisole and ivermectin had reasonable effectiveness against prevalent gastrointestinal nematodes of sheep kept in Thal desert, Pakistan. Key words: Anthelmintic, resistance, gastrointestinal nematodes, sheep, Pakistan

scholarly journals Anthelmintic Drugs Resistance of Gastrointestinal Nematodes of Naturally Infected Goats in Haramaya, Ethiopia

2022 ◽  
Author(s):  
Anteneh Wondimu ◽  
Yehualashet Bayu
Keyword(s):  
Experimental Investigation ◽  
Treatment Group ◽  
Confidence Limit ◽  
Anthelmintic Resistance ◽  
Nematode Resistance ◽  
Gastrointestinal Nematodes ◽  
Gastrointestinal Parasites ◽  
Drug Resistant ◽  
Reduction Test ◽  
Faecal Egg Count

Abstract Gastrointestinal parasites and their anthelmintic resistance are major constraints to goat production in Ethiopia. Experimental investigation by faecal egg count reduction test (FECRT) and larval cultures were used to assess the occurrence of anthelmintic resistance in naturally infected goats with gastrointestinal nematodes (GIN) in Haramaya, Ethiopia. One hundred goats with a minimum of 150 eggs per gram (EPG) count were selected and randomly divided into five groups; 20 goats in each group; four treated and one untreated group. The result of the faecal egg count reduction test percentage (FECRT%) and the lower 95% confidence limit showed the presence of anthelmintic resistance for all tested drugs except tetramisole. FECRT% and lower 95% confidence limit were 69.9% and 36.9 for albendazole, 84.3% and 66.1 for tetraclozan, 95.7% and 87.4 for tetramisole and 71.1% and 38.2 for ivermectin respectively. Trichostrongylus, Teladorsagia and Haemonchus showed anthelmintic resistance for tested drugs. Coproculture from different treatment group revealed Trichostrongylus (69.2% in ivermectin and 59.6% in albendazole) were the predominant nematode followed by Teladorsagia (21.9% in albendazole and 14.7% in ivermectin). In tetraclozan treatment group, Trichostrongylus (42%) and Teladorsagia (41.3%) were comparable, followed by Haemonchus (13%). In group treated with tetramisole, Teladorsagia (54.3%) were the most frequently detected nematode followed by Trichostrongylus (25.7%) and Haemonchus (11.4%). Therefore, this study demonstrated the presence of multi-drug resistant nematodes that may limit the productivity of goats. Moreover, further studies covering wider areas of Ethiopia and mechanisms of nematode resistance need to be studied in future.

scholarly journals First report of multiple anthelmintic resistance in nematodes of sheep in Colombia

2016 ◽  
Vol 88 (1) ◽  
pp. 397-402 ◽  
Author(s):  
Carlos M.B. Gárcia ◽  
Lew K. Sprenger ◽  
Efraín B. Ortiz ◽  
Marcelo B. Molento
Keyword(s):  
Multidrug Resistance ◽  
Haemonchus Contortus ◽  
Anthelmintic Resistance ◽  
Gastrointestinal Nematodes ◽  
The Other ◽  
First Report ◽  
Reduction Test ◽  
Anthelmintic Efficacy ◽  
Faecal Egg Count ◽  
First Time

This study aimed to report the presence of parasites resistant to the most used anthelmintic drugs in sheep in Colombia. Four farms (denominated farm 1, 2, 3 and 4) were selected where the animals were not treated with anthelmintics for two months before the trial. Animals with faecal egg count (FEC) above 150 and of different ages were allocated into six groups, each consisting of at least 5 animals. The drugs and dosages used were: ivermectin 1% (0.2 mg/kg), albendazole 25% (5 mg/kg), fenbendazole 10% (5 mg/kg), levamisole 10% (5 mg/kg), and moxidectin 1% (0.2 mg/kg). Anthelmintic efficacy was determined by the FEC reduction test (FECRT) with a second sampling 14 days post-treatment. The efficacy of albendazole and fenbendazole at farm 1 was above 95%, which was different from the others farms. The FECRT indicated the presence of multidrug resistance in the other farms where no tested drugs showed activity higher than 79% (albendazole: 0 to 55%, fenbendazole: 51.4 to 76.6%, ivermectin: 67.3 to 93.1%, levamisole: 0 to 78.1%, and moxidectin: 49.2 to 64.1%).Haemonchus contortus was the predominant (96%) species, followed by a small presence of Trichostrongylus sp. (3%) andCooperia sp. (1%). Therefore, we report for the first time the existence of multiple anthelmintic resistance in gastrointestinal nematodes of sheep in Colombia.

scholarly journals Anthelmintic efficacy of selected medicinal plants against gastrointestinal nematodes in naturally infected sheep in Kenya

2018 ◽  
Vol 7 (2) ◽  
pp. 111-115
Author(s):  
JK Muthee ◽  
Keyword(s):  
Anthelmintic Resistance ◽  
Gastrointestinal Nematodes ◽  
Herbal Remedies ◽  
Multi Drug Resistance ◽  
Traditional Health ◽  
Health Practitioners ◽  
Faecal Egg Count ◽  
Traditional Practitioners ◽  
And Control ◽  
Myrsine Africana

The use of plants, or their extracts, for the treatment of human and animal ailments, including helminthosis is steeped in antiquity. Anthelmintic resistance in pathogenic helminths has been spreading in prevalence and severity to a point where there is multi-drug resistance against the three major classes of anthelmintics. This globe-wide phenomenon calls for urgent search for different approaches to the control of helminthosis including novel anthelmintic products. The objective of this study was to evaluate the efficacy of plants, which are commonly used in the treatment and control of helminthosis, under the natural grazing conditions in Loitoktok Sub-County of Kenya. The plant species (Albizia anthelmintica, Myrsine africana, and Embelia schimperi were selected based on their availability and ethnopharmacological uses, as anthelmintics, by the traditional health practitioners in the area. Fifty sheep of mixed breeds, belonging to local herders, and naturally infected with mixed gastrointestinal nematodes were recruited for the study. The herbal remedies were prepared and administered by methods prescribed by the traditional practitioners. Their efficacy was determined using faecal egg count reduction test (FECRT). The percentage faecal egg count reduction against the mixed gastrointestinal nematodes was 59, -11, -31 and 87 for Myrsine africana, A. anthelmintica, E. schimperi and albendazole respectively. It was concluded that some of the remedies have some efficacy and further studies are needed to evaluate their potential as anthelmintics. There was also suspicion of development of anthemintic resistance to albendazole and herders needed to be advised accordingly on the proper use of conventional anthelmintic products

scholarly journals Detection of anthelmintic resistance in sheep and goat against fenbendazole by faecal egg count reduction test

2016 ◽  
Vol 41 (2) ◽  
pp. 463-466 ◽  
Author(s):  
Ramandeep Singh ◽  
M. S. Bal ◽  
L. D. Singla ◽  
Paramjit Kaur
Keyword(s):  
Anthelmintic Resistance ◽  
Reduction Test ◽  
Faecal Egg Count

scholarly journals Worm-control practices and prevalence of anthelmintic resistance using in vivo FECRTs on smallholder sheep farms in Lithuania

2016 ◽  
Vol 53 (1) ◽  
pp. 24-30 ◽  
Author(s):  
T. Kupčinskas ◽  
I. Stadalienė ◽  
A. Šalomskas ◽  
P. Trusevičius ◽  
M. Varady ◽  
...  
Keyword(s):  
Anthelmintic Resistance ◽  
Gastrointestinal Nematodes ◽  
Parasitic Nematodes ◽  
Future Studies ◽  
Faecal Samples ◽  
Two Samples ◽  
Faecal Egg Count ◽  
Worm Control

SummaryThis study determined the prevalence of anthelmintic resistance (AR) in parasitic nematodes on smallholder sheep farms in Lithuania from April to November 2014. Faecal samples were collected from two groups of 10-15 sheep treated with fenbendazole (FBZ) or ivermectin (IVM) on 18 sheep farms. Two samples were collected from each group: on day zero (T1) and 10-14 days after treatment. Faecal egg counts (eggs per gramme, EPG) were determined using a modified McMaster technique. Animals with < 140 EPG on day zero were removed from the analysis. The prevalence of AR was estimated using the in vivo faecal egg count reduction test. AR to FBZ was detected on three of 15 farms where FBZ was used (20 %) and was suspected on one farm (6.7 %). AR to IVM was detected on two of 16 farms where IVM was used (12.5 %). The main species of resistant gastrointestinal nematodes (GINs) identified after treatment were Teladorsagia spp. and Trichostrongylus spp. A questionnaire surveying 71 sheep farmers estimated that 71.8 % of sheep farmers used anthelmintics against GINs. IVM was the most frequently (68.6 %) applied anthelmintic, and 62.7 % of the respondents reported treating their animals twice a year. This study confirmed the presence of AR to GIN infections on sheep farms in Lithuania. Future studies should assess the prevalence of AR to GIN infection using in vitro methods.

scholarly journals Monitoring of anthelmintic resistance in small strongyles in the Czech Republic in the years 2006–2009

2013 ◽  
Vol 82 (3) ◽  
pp. 243-248
Author(s):  
Štěpán Bodeček ◽  
Eva Vavrouchová
Keyword(s):  
Czech Republic ◽  
Anthelmintic Resistance ◽  
Drug Resistant ◽  
The Czech Republic ◽  
Parascaris Equorum ◽  
Reduction Test ◽  
Anoplocephala Perfoliata ◽  
Faecal Egg Count ◽  
Pre Treatment ◽  
Strongyloides Westeri

The aim of the field study performed in 2006 was to investigate the occurrence and distribution of intestinal helminths in horses based on pre-treatment faecal egg counts. In total, 948 horses bred on 37 farms were tested. Thirty six (97.2%) farms tested were positive for cyathostomins; horses in 9 (24.3%), 6 (16.2%) and 1 (2.7%) different herds tested were positive for Parascaris equorum, Anoplocephala perfoliata and Strongyloides westeri, respectively. In 21 herds, 344 horses with values exceeding 100 eggs per gram were included in the trial for the presence of drug resistant cyathostomins by a faecal egg count reduction test. Horses were treated orally with recommended doses of fenbendazole and ivermectin. Resistance to fenbendazole was detected on 20 farms (95.24%) with values of faecal egg count reduction test ranging from 0 to 90%. Ivermectin remained effective in all tested herds with the value of faecal egg count reduction test 96–100%. In autumn 2008, 178 horses on 10 farms were examined. Of these, only seven horses tested were negative for cyathostomins. One farm was tested positively for Anoplocephala perfoliata, and one for Parascaris equorum. In spring 2009, six farms were examined, four of which were the same farms as in 2006. We found a decreased number of eggs per gram in all horses, but an increase in benzimidazole resistance, which was found in 5 farms out of 6 (faecal egg count reduction test 15.2–84.6%). This is the first wide survey in horses from the Czech Republic. Based on this study, we can conclude that benzimidazole resistant cyathostomins in horses are widespread but ivermectin is still fully effective.

Gastrointestinal nematodes infections and anthelmintic resistance in grazing sheep in the Eastern Inner Mongolia in China

2017 ◽  
Vol 62 (4) ◽  
Author(s):  
Tianlong Han ◽  
Min Wang ◽  
Guanghe Zhang ◽  
Dongsheng Han ◽  
Xinwei Li ◽  
...  
Keyword(s):  
Infection Rate ◽  
Inner Mongolia ◽  
Anthelmintic Resistance ◽  
Infection Intensity ◽  
Gastrointestinal Nematodes ◽  
Egg Hatch ◽  
Faecal Egg Count ◽  
Grazing Sheep ◽  
Sheep Production ◽  
Eastern Inner Mongolia

AbstractGastrointestinal nematodes (GIN) are a crucial restraint to grazing sheep production worldwide. This study was conducted to determine the infections and anthelmintic resistance (AR) of GIN in pasture-based sheep in the Eastern Inner Mongolia, China. GIN eggs were tested from 600 grazing sheep feces of 10 farms using saturated saline flotation method and McMaster’s method. The egg hatch test (EHT) and the faecal egg count reduction test (FECRT) were used to evaluate resistance of GIN to anthelmintics. We found that the average infection rate was 79.2% (range: 45%-100%). The grand mean faecal egg count (FEC) was 1813.2 eggs per gram (EPG) (range: 0-32400 EPG). There were significant differences in GIN infection among different breeds of sheep. The sequence of infection intensity and infection rate were Small fat tail > Ujimqin > Ju Ud (

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