Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2000-7-20
pubmed:abstractText
Anthelmintic resistance now poses problems to sheep farmers throughout the world. In some Southern hemisphere countries multiple resistance has reached levels which make sheep farming non-sustainable. Evidence from studies in the UK and Europe suggests (a) that the selection process occurs over a longer time frame than in Southern tropical/temperate regions and (b) that for some of the key ovine species little or no reversion to susceptibility may occur for many years after the withdrawal of the selecting agent. The dynamics of the selection process are influenced by a number of host, parasite, drug, management and environment-dependent factors. Recent mechanistic studies on resistance against avermectins and milbemycins (AM) suggest that there may be a number of mechanisms associated with resistance at the different target sites for these drugs. Within Europe endectocides within the AM drug group have now become the crucial element in strategies aimed at controlling important diseases such as sheep scab and nematodoses. Given that there is little likelihood of a series of novel action compounds emerging in the immediate future to replace this family the conservation of efficacy of the AM group should be accorded the highest priority for research in this area.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0031-1820
pubmed:author
pubmed:issnType
Print
pubmed:volume
120 Suppl
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
S95-107
pubmed:dateRevised
2005-11-16
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
The development of anthelmintic resistance in sheep nematodes.
pubmed:affiliation
Moredun Research Institute, International Research Centre, Penicuik, Midlothian, Scotland, UK. jackf@mri.sari.ac.uk
pubmed:publicationType
Journal Article, Review