Behandling av reinkalver med ivermectin første levehøst. Effekt på levendevekter andre levehøst

Abstract

Reinen lever i et svært sårbart miljø, hvor små inngrep kan gi uante følger på lengre sikt. Innføring av medikamentbruk i en næring som tradisjonelt har klart seg uten medfører derfor et betydelig ansvar. For eksempel vil bruk av ivermectin på flokker fra dårlige, overbelastede beiter sannsynligvis gi bra effekt, men samtidig kan det bidra til å kamuflere problemer som kunne løses på annen måte, f.eks. ved omlegging av flokkstruktur og slakteuttak. Imidlertid vil bruk av ivermectin i reinflokker som lever under normalt gode betingelser kunne gi et resultat i form av økt kjøttavkastning som gjør at et evt. rutinemessig behandlingsopplegg vil kunne være økonomisk fordelaktig

Antti Oksanen; Endectocide treatment of the reindeer

“…In another trial, a significant increase in mean live weight gain of about 3 kg was seen during the subsequent year in treated calves as compared to non-treated ones (Heggstad et al, 1986).…”

“…The next reported trial was initiated in 1984 in Norway. The live weight of reindeer calves about six months of age, treated with ivermectin during the autumn increased during the subsequent year on average 3 kg more than that of similar untreated animals (Heggstad et al, 1986). In December, 1990, eighty reindeer calves were ivermectin treated in Kautokeino, Norway.…”

Impact of broad-spectrum anthelmintic treatment in the summer on the weight gain of reindeer calves

“…Experimental treatment with organophosphates, having efficacy against arthropod parasites only, either did not cause a significant weight gain (Nieminen et al, 1980) or caused a small increase (Persen et al, 1982). Ivermectin appears to have RangiSer, 16 (31 1996 been more beneficial, treatment of reindeer calves in the autumn or early winter has been demonstrated to decrease weight loss during winter or increase weight gain during the following season (Nordkvist et al, 1984;Heggstad et al, 1986). It is not easy to assess if the weight gain achieved with ivermectin is more due to the effect against arthropods or nematodes.…”

Developing an ecologically and economically more stable semi-domestic reindeer management - a Finnish point of view

“…By introducing supplementary feeding during the 1970's, animal condition was improved. Also expansive treatment against parasites during 1980's can be supposed to have had the same effect (see Heggstad et al, 1986). There followed a reduced mortality rate and an increased reproduction rate in reindeer stocks.…”