ANUALPEC 2012 PDF

Treatment of the animals with avermectin compounds did not result in satisfactory EPG reduction in any herd. These results show that phenolic-substituted drugs have limited applicability in the studied cattle herds. Phenolic-substituted compounds disophenol and nitroxynil showed differing efficacy. Oil palm for biodiesel in Brazil—risks and opportunities — IOPscience Nitroxynil was effective against Haemonchus spp. Effectiveness evaluation of several cattle anthelmintics via the fecal egg count reduction test. The broad detection of parasite resistance to several anthelmintics recognized as good quality commercial drugs suggests that parasite populations have developed resistance to the main classes of drugs available in Brazil.

Author:Moogura Brakus
Country:Albania
Language:English (Spanish)
Genre:Love
Published (Last):13 July 2012
Pages:420
PDF File Size:13.35 Mb
ePub File Size:13.72 Mb
ISBN:879-8-74918-538-6
Downloads:72913
Price:Free* [*Free Regsitration Required]
Uploader:Grojind



Treatment of the animals with avermectin compounds did not result in satisfactory EPG reduction in any herd. These results show that phenolic-substituted drugs have limited applicability in the studied cattle herds. Phenolic-substituted compounds disophenol and nitroxynil showed differing efficacy. Oil palm for biodiesel in Brazil—risks and opportunities — IOPscience Nitroxynil was effective against Haemonchus spp. Effectiveness evaluation of several cattle anthelmintics via the fecal egg count reduction test.

The broad detection of parasite resistance to several anthelmintics recognized as good quality commercial drugs suggests that parasite populations have developed resistance to the main classes of drugs available in Brazil.

Abstract Gastrointestinal nematodes resistant to anthelmintics have been reported in several regions of Brazil, and they may be associated with economic losses for the cattle industry. Therefore, previous knowledge regarding parasite resistance was used as a tool to inform the choice of potentially efficacious combinations of drugs. Please review our privacy policy. Persistent efficacy of 3. Anthelmintic resistance impact on tropical beef cattle productivity: Conflicts of interest The authors of this manuscript have no financial or personal relationships with other people or organizations that could inappropriately influence or anualpc the anuaplec of the paper.

Articles from International Journal for Parasitology: Ten farms located in Rio Grande do Sul state were selected by: Acceptable efficacy was shown by some combinations: Drug resistance mechanisms in helminths: Other compounds are eventually used when the farmer suspects that conventional drugs are failing. Additionally, the following technical criteria were considered: However, in the present study, with the exception of Oesophagostomum spp. The resistance of Cooperia spp.

Estimating the cost of subclinical parasitism in grazing ewes. Anthelmintic combination Genera Cooperia spp. This article has been cited by other articles in PMC. Some of the two-drug combinations were effective against nematode populations identified as resistant to the anuapec compounds when used as single drugs.

July ; 25 7: The use of combinations of two anthelmintic compounds with good efficacy as single drugs could be an effective means of delaying the development of drug resistance in parasites. On each farm, pre-treatment and post-treatment EPG counts were used to calculate the efficacy of each treatment based on the reduction in EPG. Some strains of Oesophagostumum spp. Each of the ten groups was randomly treated with a single drug in the first part of this study.

Oil palm for biodiesel in Brazil—risks and opportunities The effect of previous cold storage on the subsequent recovery of infective third stage nematode larvae from sheep faeces.

The results of this study showed the presence of gastrointestinal nematodes resistant to the main commercially available anthelmintic drugs on cattle farms evaluated in the state of Rio Grande do Sul, Brazil.

National Center for Biotechnology InformationU. Open in a separate window. Anthelmintic treatment In the first part of the study, ten commercially available anthelmintic compounds were tested on each farm. The effect of anthelmintic resistance on the productivity in feedlot cattle.

Anthelmintic resistance of gastrointestinal nematodes cattle. Mato Grosso do Sul. Phenolic substitutes nitroxynil and disophenol are narrow spectrum anthelmintics that are not aanualpec in the presence of infections by Cooperia spp.

Related Posts.

THE SACRED SCRIPTURES BETHEL EDITION PDF

ANUALPEC 2012 PDF

For this purpose, new groups of calves, selected by the criteria described before, were used. Acknowledgments The authors are grateful for the availability and collaboration of producers and their employees to carry out this work. Gastrointestinal nematodes resistant to anthelmintics have been reported in several regions of Brazil, and they may be associated with economic losses for the cattle industry. Treatment of the animals with avermectin compounds did not result in satisfactory EPG reduction in any herd. At the four farms included in the second part of this study, six additional groups were treated with a combination of two anthelmintic compounds as described previously. The black spheres indicate the locations of the farms.

DR JOHN DEE NECRONOMICON PDF

Acesso para assinantes

As an exception, ivermectin is well recognized and the most widely used anthelmintic, followed by other avermectins, benzimidazoles, levamisole, and cydectin. Each drug in the combination treatments was administered separately. In this study, parasites resistant to the main commercially available anthelmintics were found in all herds, and some combinations of two active components belonging to different chemical groups were effective against multi-drug resistant gastrointestinal nematodes. Phenolic substitutes nitroxynil amualpec disophenol are narrow spectrum anthelmintics that are not recommended in the presence of infections by Cooperia spp. Please review our privacy policy.

80N02 DATASHEET PDF

Tukazahn Anthelmintic resistance to ivermectin and moxidectin in gastrointestinal nematodes of cattle in Europe. Anuapec resistance mechanisms in helminths: In critical situations of parasite resistance, in which no options of effective drugs are commercially available, combinations of two anthelmintic compounds with different mechanisms of action and unsatisfying efficacy as single drugs can effectively control multi-drug-resistant gastrointestinal nematodes. The black spheres indicate the locations of the farms. Considering the location of the farms, these data suggest that parasite resistance to BZs may be spreading in Rio Grande do Sul, similar to the situation observed for avermectins in several Brazilian herds. Persistent efficacy of 3. Larvae cultures from animals from all showed the presence of mixed infections containing the following genera: Morphological identification of parasitic nematode infective larvae of small ruminants and cattle: Gastrointestinal nematodes resistant to anthelmintics have been reported in several regions of Brazil, and they may be associated with economic losses for the cattle industry.

Related Articles