ANUALPEC () ‘Anuário da Pecuária Brasileira.’ 1st edn. (Instituto FNP and Agra Pesquisas Ltda: São Paulo, Brazil). ANUALPEC () ‘Anuário da. million animals were finished in feedlots (BEEFPOINT, ), which represented .. the past two decades (ANUALPEC, ). Concomitantly with the greater. accounting for about % of the national herd (ANUALPEC. ), this region shows the highest growth rate in the coun- try. Crossbreeding is.

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Some of the two-drug combinations were effective against nematode populations identified as resistant to the same compounds when used as single drugs. 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.

Mato Grosso do Sul. Calves were weaned approximately six months after birth and kept in the same grazing area before and during the study on each farm. Lateral resistance of macrolactones against cattle nematodes.

The resistance of Cooperia spp. Diagnosis of anthelmintic resistance in cattle in Brazil: Ten farms located in Rio Grande do Sul state were selected by: After incubation, larvae were recovered by baermanization, after which third-stage larvae in each culture were identified by genera following the criteria described by Van Wyk and Mayhew These calves were distributed into 10 randomized blocks based on EPG at each farm, to balance the mean and the frequency distributions of EPG countings among the groups before the treatments.

As an exception, ivermectin is well recognized and the most widely used anthelmintic, followed by other avermectins, znualpec, levamisole, and cydectin.

This article aanualpec been cited by other articles in PMC. Moxidectin was fully effective at one farm, but unsatisfying reductions in EPG counts were observed in the other nine herds.


Therefore, previous knowledge regarding parasite resistance was used as a tool to inform the choice of potentially efficacious combinations of drugs. Phenolic-substituted compounds disophenol and nitroxynil showed differing efficacy.

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anualpce Acceptable efficacy was shown by some combinations: Alternatives for the control of gastrointestinal nematoides of small ruminants. With regard to the benzimidazoles employed in this study, albendazole was ineffective against gastrointestinal parasites anuslpec nine farms and showed an inconclusive result at the farm 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 anthelmintic drugs available in Brazil.

Other compounds are eventually used when the farmer suspects that conventional drugs are failing. 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.

This study aimed to verify the existence of populations of gastrointestinal nematodes resistant to several commercially available anthelminthic compounds by evaluating naturally infected beef cattle from herds located in the state of Rio Grande do Sul, Brazil.

Diagnostic of the control and sensitivity profile of nematodes from sheep to albendazole and levamisole in northern Minas Gerais, Brazil. Preliminarily, herds were selected based on location and previous consent by farmers. Multiple resistance to anthelmintics in sheep nematodes and comparison of methods used for their detection.

Monitoring the efficacy of ivermectin and albendazole against gastrointestinal nematodes of intestinal cattle in Northern Europe. However, in the present study, with the exception of Oesophagostomum spp.

While farmers reported knowledge of levamisole in the present study, it was not frequently used, indicating low selection pressure.


In the first part of the study, ten commercially available anthelmintic compounds were tested on each farm. Global perspectives on nematode parasites control in ruminant livestock: At the four farms included in the second part of this study, six additional groups were treated with a combination of two anthelmintic 0212 as described previously.

Oil palm for biodiesel in Brazil—risks and opportunities

Closantel was effective against Haemonchus spp. Improving liveweight gain of lambs infected by multidrug-resistant nematodes using a FECRT-based schedule of treatments. These results show that phenolic-substituted drugs have limited applicability in the studied cattle herds. The anualpev 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.

Location of ten beef cattle herds studied at eight counties from the state of Rio Grande anuxlpec Sul in southern Brazil.

However, this study 2102 focused on situations in which two effective drugs were unavailable to farmers. In Brazil, anthelmintics are generally used at farmers’ discretion, with no restrictions to access to commercially available drugs and without any assistance from veterinarians. The choice of two-drug combinations was made with a focus on including different modes of action and efficacy against different genera of gastrointestinal nematodes.

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. In general, the same genera identified as resistant to single drugs were found to be resistant to xnualpec combinations.

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