{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,26]],"date-time":"2025-10-26T21:08:04Z","timestamp":1761512884374,"version":"build-2065373602"},"reference-count":12,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[1998,8,15]],"date-time":"1998-08-15T00:00:00Z","timestamp":903139200000},"content-version":"vor","delay-in-days":14,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Veterinary Record"],"published-print":{"date-parts":[[1998,8]]},"abstract":"<jats:p>\n                    To assess the persistence of the activity of topical ivermectin against a natural challenge with biting lice (\n                    <jats:italic>Bovicola bovis<\/jats:italic>\n                    ), 90\u00a0mixed\u2010breed cattle that had been treated to remove lice, were blocked by bodyweight within sex and randomly allocated to three treatments: untreated control, doramectin at 200 \u03bcg\/kg by subcutaneous injection, and ivermectin at 500 \u03bcg\/kg by topical application. Forty\u2010five pens were blocked into three groups of 15, and the blocks of pens were randomly allocated to three 14\u2010day challenge periods starting 21, 28 and 35\u00a0days after treatment. There were five pens per treatment for each challenge period, and one\n                    <jats:italic>B bovis<\/jats:italic>\n                    \u2010infested donor calf was introduced into each pen containing two principal calves at the start of the challenge period for that block of pens. The calves were examined thoroughly for\n                    <jats:italic>B bovis<\/jats:italic>\n                    seven, 14 and 21\u00a0days after the introduction of the donors. There were no significant differences between the control and doramectin groups for the numbers of animals infested, or the geometric mean louse counts at the final examination for any of the challenge periods. At the final examination for each challenge period, the louse counts of the cattle treated with topical ivermectin were all zero, and significantly (P&lt;0.05) fewer cattle treated with topical ivermectin were infested than either the controls or cattle treated with doramectin.\n                  <\/jats:p>","DOI":"10.1136\/vr.143.7.193","type":"journal-article","created":{"date-parts":[[2010,10,4]],"date-time":"2010-10-04T23:03:59Z","timestamp":1286233439000},"page":"193-195","source":"Crossref","is-referenced-by-count":6,"title":["Persistence of the activity of topical ivermectin against biting lice (\n                    <i>Bovicola bovis<\/i>\n                    )"],"prefix":"10.1002","volume":"143","author":[{"given":"B.","family":"Clymer","sequence":"first","affiliation":[{"name":"Agricultural Training &amp; Technology 11395 South Western Street, Amarillo Texas TX 79118 USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K. M.","family":"Newcomb","sequence":"additional","affiliation":[{"name":"Merial Ltd 2100 Ronson Road, Isein New Jersey NJ 08830\u20103077 USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"W. G.","family":"Ryan","sequence":"additional","affiliation":[{"name":"Merial Ltd 2100 Ronson Road, Isein New Jersey NJ 08830\u20103077 USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M. D.","family":"Soll","sequence":"additional","affiliation":[{"name":"Merial Ltd 2100 Ronson Road, Isein New Jersey NJ 08830\u20103077 USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[1998,8,15]]},"reference":[{"key":"e_1_2_5_2_1","doi-asserted-by":"crossref","first-page":"278","DOI":"10.1136\/vr.140.11.278","volume":"140","author":"BARTH D.","year":"1997","journal-title":"Veterinary Record"},{"key":"e_1_2_5_3_1","doi-asserted-by":"publisher","DOI":"10.3168\/jds.S0022-0302(82)82481-8"},{"key":"e_1_2_5_4_1","first-page":"119","volume":"46","author":"CHRISTENSSON D.","year":"1994","journal-title":"Svensk Veterinartidning"},{"key":"e_1_2_5_5_1","doi-asserted-by":"publisher","DOI":"10.1093\/jee\/83.4.1435"},{"key":"e_1_2_5_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/0304-4017(93)90225-C"},{"key":"e_1_2_5_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/0304-4017(93)90210-E"},{"key":"e_1_2_5_8_1","unstructured":"PARRY J. 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