Matches in SemOpenAlex for { <https://semopenalex.org/work/W2000637986> ?p ?o ?g. }
Showing items 1 to 73 of
73
with 100 items per page.
- W2000637986 endingPage "451" @default.
- W2000637986 startingPage "445" @default.
- W2000637986 abstract "In 1979 a field trial was started to study the feasibility of maedi-visna control in sheep by half-yearly serological testing (by ELISA) with culling of sero-positive ewes and their progeny. In 13 commercial flocks, with a mean initial incidence of serological reactors of 17%, the sero-positive ewes and all their progeny, those of preceding years included, were culled after each half-yearly test. The percentage of sero-positive sheep decreased gradually and at the end of the second year, at the 5th test, all flocks were sero-negative. Also the 6th and 7th test did not yield sero-positive sheep. At the 8th test, however, 3 sero-positive ewes were detected in one of the flocks. A definite conclusion as to the source of infection could not be drawn. The following flock test was negative. In 2 other commercial flocks, which had a mean initial incidence of sero-positive sheep of 53%, those sero-positive and only their suckling lambs were culled. Here too, a gradual decrease in the incidence of sero-positive sheep was observed at the 2nd and 3rd test, but at the 4th test a sharp increase occurred. The programme was continued and a decrease followed until 0% was reached at the 7th test (end of third year). Age analysis of the sero-positive sheep which caused this peak revealed that the majority had been born before the start of the trial. This suggests that a ‘second wave’ of sero-positive sheep may be prevented and a quicker result obtained if progeny of preceding years are culled as well. Apart from 1 flock (mentioned above), all flocks remained sero-negative after reaching 0% until the end of the observation period in December 1982. These results show that maedi-visna can be controlled by serological testing and culling of positive sheep. However, the present observation period of 4 years is still too short to conclude that complete eradication of the virus from the flocks has been achieved. Furthermore it appears that simultaneous culling of all progeny is preferable." @default.
- W2000637986 created "2016-06-24" @default.
- W2000637986 creator A5007612902 @default.
- W2000637986 creator A5081685387 @default.
- W2000637986 creator A5084026081 @default.
- W2000637986 date "1984-09-01" @default.
- W2000637986 modified "2023-10-18" @default.
- W2000637986 title "Maedi-visna control in sheep II. Half-yearly serological testing with culling of positive ewes and progeny" @default.
- W2000637986 cites W2018510122 @default.
- W2000637986 cites W2028669849 @default.
- W2000637986 doi "https://doi.org/10.1016/0378-1135(84)90065-8" @default.
- W2000637986 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/6093339" @default.
- W2000637986 hasPublicationYear "1984" @default.
- W2000637986 type Work @default.
- W2000637986 sameAs 2000637986 @default.
- W2000637986 citedByCount "37" @default.
- W2000637986 countsByYear W20006379862013 @default.
- W2000637986 countsByYear W20006379862014 @default.
- W2000637986 countsByYear W20006379862015 @default.
- W2000637986 countsByYear W20006379862018 @default.
- W2000637986 countsByYear W20006379862021 @default.
- W2000637986 crossrefType "journal-article" @default.
- W2000637986 hasAuthorship W2000637986A5007612902 @default.
- W2000637986 hasAuthorship W2000637986A5081685387 @default.
- W2000637986 hasAuthorship W2000637986A5084026081 @default.
- W2000637986 hasConcept C120665830 @default.
- W2000637986 hasConcept C121332964 @default.
- W2000637986 hasConcept C134215735 @default.
- W2000637986 hasConcept C140793950 @default.
- W2000637986 hasConcept C159654299 @default.
- W2000637986 hasConcept C194775826 @default.
- W2000637986 hasConcept C203014093 @default.
- W2000637986 hasConcept C42972112 @default.
- W2000637986 hasConcept C45189115 @default.
- W2000637986 hasConcept C52991690 @default.
- W2000637986 hasConcept C61511704 @default.
- W2000637986 hasConcept C71924100 @default.
- W2000637986 hasConcept C86803240 @default.
- W2000637986 hasConceptScore W2000637986C120665830 @default.
- W2000637986 hasConceptScore W2000637986C121332964 @default.
- W2000637986 hasConceptScore W2000637986C134215735 @default.
- W2000637986 hasConceptScore W2000637986C140793950 @default.
- W2000637986 hasConceptScore W2000637986C159654299 @default.
- W2000637986 hasConceptScore W2000637986C194775826 @default.
- W2000637986 hasConceptScore W2000637986C203014093 @default.
- W2000637986 hasConceptScore W2000637986C42972112 @default.
- W2000637986 hasConceptScore W2000637986C45189115 @default.
- W2000637986 hasConceptScore W2000637986C52991690 @default.
- W2000637986 hasConceptScore W2000637986C61511704 @default.
- W2000637986 hasConceptScore W2000637986C71924100 @default.
- W2000637986 hasConceptScore W2000637986C86803240 @default.
- W2000637986 hasIssue "5" @default.
- W2000637986 hasLocation W20006379861 @default.
- W2000637986 hasLocation W20006379862 @default.
- W2000637986 hasOpenAccess W2000637986 @default.
- W2000637986 hasPrimaryLocation W20006379861 @default.
- W2000637986 hasRelatedWork W1567912649 @default.
- W2000637986 hasRelatedWork W1964841181 @default.
- W2000637986 hasRelatedWork W2012867260 @default.
- W2000637986 hasRelatedWork W2026061623 @default.
- W2000637986 hasRelatedWork W2053444465 @default.
- W2000637986 hasRelatedWork W2158728006 @default.
- W2000637986 hasRelatedWork W2331512082 @default.
- W2000637986 hasRelatedWork W2415124760 @default.
- W2000637986 hasRelatedWork W2522538128 @default.
- W2000637986 hasRelatedWork W2763230643 @default.
- W2000637986 hasVolume "9" @default.
- W2000637986 isParatext "false" @default.
- W2000637986 isRetracted "false" @default.
- W2000637986 magId "2000637986" @default.
- W2000637986 workType "article" @default.