Tags

Type your tag names separated by a space and hit enter

Gastrointestinal parasites in reindeer (Rangifer tarandus tarandus) calves from Fennoscandia: An epidemiological study.
Vet Parasitol Reg Stud Reports. 2019 04; 16:100277.VP

Abstract

Reindeer (Rangifer tarandus tarandus) host numerous parasites. Although there is a general knowledge about parasite diversity in reindeer, detailed baseline information about parasitic infections is limited. Detailed knowledge of parasite prevalence and diversity provide a pathway for more targeted parasite control, an increasing need expected in the future. The main aim of our cross-sectional study was to estimate the prevalence of gastrointestinal parasites in semidomesticated reindeer calves. The 480 reindeer calves included in our study were aged 6-7 months, originated from 9 reindeer herding cooperatives in Finland and 1 in Norway, and were slaughtered during September-November 2015 in 10 reindeer slaughterhouses. All the reindeer calves passed meat inspection, and the detected parasitic infections were subclinical. As the reindeer included in this study were young animals intended for slaughter, they had never been administrated any antiparasitic treatment. Assessments of gastrointestinal parasitism among these reindeer calves were based on fecal examination and morphological identification of coccidian oocysts or helminth eggs. Individual fecal samples collected from the rectum of each of the reindeer were examined using a modified McMaster method. Most (78.3%) of the reindeer calves had eggs or oocysts of at least one parasite species in their feces, and more than half (53.5%) had a mixed infection. Strongylid eggs were detected in 75.6%, Eimeria sp. oocysts in 50.6%, Moniezia sp. eggs in 28.1%, Nematodirus sp. eggs in 22.1%, Capillaria sp. eggs in 9.4%, and Trichuris sp. eggs in 0.6% of the samples. The prevalence of gastrointestinal parasites was similar or higher relative to previous estimates from the region; the proportion of reindeer calves shedding strongylid eggs and the proportion of reindeer calves shedding Moniezia sp. eggs had increased. Prevalence varied by geographical region, which may reflect different herding practices or environmental parameters. Higher reindeer density was a risk factor for testing positive for Eimeria sp. oocysts, and the odds of testing positive for Nematodirus sp. eggs were higher if a peroral route was used for antiparasitic treatment in the reindeer herding cooperative. The mean proportion of reindeer estimated to receive antiparasitic treatment in Finland was 86% in 2004-2005 and 91% in 2014-2015. During the historical time frames of current management practices, this routine annual antiparasitic treatment of breeding reindeer has not decreased the prevalence of gastrointestinal parasites in reindeer calves, which can be seen as sentinels or indicators of the infection pressure.

Authors+Show Affiliations

Department of Bacteria, Parasites & Fungi, Infectious Disease Preparedness, Statens Serum Institut, Copenhagen, Denmark; Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland; Estonian University of Life Sciences, Tartu, Estonia.Finnish Food Authority, Oulu, Finland.Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI, USA.Finnish Food Authority, Oulu, Finland.Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland. Electronic address: hirvi54@gmail.com.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

31027604

Citation

Jokelainen, Pikka, et al. "Gastrointestinal Parasites in Reindeer (Rangifer Tarandus Tarandus) Calves From Fennoscandia: an Epidemiological Study." Veterinary Parasitology, Regional Studies and Reports, vol. 16, 2019, p. 100277.
Jokelainen P, Moroni B, Hoberg E, et al. Gastrointestinal parasites in reindeer (Rangifer tarandus tarandus) calves from Fennoscandia: An epidemiological study. Vet Parasitol Reg Stud Reports. 2019;16:100277.
Jokelainen, P., Moroni, B., Hoberg, E., Oksanen, A., & Laaksonen, S. (2019). Gastrointestinal parasites in reindeer (Rangifer tarandus tarandus) calves from Fennoscandia: An epidemiological study. Veterinary Parasitology, Regional Studies and Reports, 16, 100277. https://doi.org/10.1016/j.vprsr.2019.100277
Jokelainen P, et al. Gastrointestinal Parasites in Reindeer (Rangifer Tarandus Tarandus) Calves From Fennoscandia: an Epidemiological Study. Vet Parasitol Reg Stud Reports. 2019;16:100277. PubMed PMID: 31027604.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Gastrointestinal parasites in reindeer (Rangifer tarandus tarandus) calves from Fennoscandia: An epidemiological study. AU - Jokelainen,Pikka, AU - Moroni,Barbara, AU - Hoberg,Eric, AU - Oksanen,Antti, AU - Laaksonen,Sauli, Y1 - 2019/02/23/ PY - 2018/10/08/received PY - 2019/02/21/revised PY - 2019/02/22/accepted PY - 2019/4/28/entrez PY - 2019/4/28/pubmed PY - 2019/4/28/medline KW - Eggs KW - Finland KW - Gastrointestinal parasites KW - Norway KW - Oocysts KW - Reindeer SP - 100277 EP - 100277 JF - Veterinary parasitology, regional studies and reports JO - Vet Parasitol Reg Stud Reports VL - 16 N2 - Reindeer (Rangifer tarandus tarandus) host numerous parasites. Although there is a general knowledge about parasite diversity in reindeer, detailed baseline information about parasitic infections is limited. Detailed knowledge of parasite prevalence and diversity provide a pathway for more targeted parasite control, an increasing need expected in the future. The main aim of our cross-sectional study was to estimate the prevalence of gastrointestinal parasites in semidomesticated reindeer calves. The 480 reindeer calves included in our study were aged 6-7 months, originated from 9 reindeer herding cooperatives in Finland and 1 in Norway, and were slaughtered during September-November 2015 in 10 reindeer slaughterhouses. All the reindeer calves passed meat inspection, and the detected parasitic infections were subclinical. As the reindeer included in this study were young animals intended for slaughter, they had never been administrated any antiparasitic treatment. Assessments of gastrointestinal parasitism among these reindeer calves were based on fecal examination and morphological identification of coccidian oocysts or helminth eggs. Individual fecal samples collected from the rectum of each of the reindeer were examined using a modified McMaster method. Most (78.3%) of the reindeer calves had eggs or oocysts of at least one parasite species in their feces, and more than half (53.5%) had a mixed infection. Strongylid eggs were detected in 75.6%, Eimeria sp. oocysts in 50.6%, Moniezia sp. eggs in 28.1%, Nematodirus sp. eggs in 22.1%, Capillaria sp. eggs in 9.4%, and Trichuris sp. eggs in 0.6% of the samples. The prevalence of gastrointestinal parasites was similar or higher relative to previous estimates from the region; the proportion of reindeer calves shedding strongylid eggs and the proportion of reindeer calves shedding Moniezia sp. eggs had increased. Prevalence varied by geographical region, which may reflect different herding practices or environmental parameters. Higher reindeer density was a risk factor for testing positive for Eimeria sp. oocysts, and the odds of testing positive for Nematodirus sp. eggs were higher if a peroral route was used for antiparasitic treatment in the reindeer herding cooperative. The mean proportion of reindeer estimated to receive antiparasitic treatment in Finland was 86% in 2004-2005 and 91% in 2014-2015. During the historical time frames of current management practices, this routine annual antiparasitic treatment of breeding reindeer has not decreased the prevalence of gastrointestinal parasites in reindeer calves, which can be seen as sentinels or indicators of the infection pressure. SN - 2405-9390 UR - https://www.unboundmedicine.com/medline/citation/31027604/Gastrointestinal_parasites_in_reindeer__Rangifer_tarandus_tarandus__calves_from_Fennoscandia:_An_epidemiological_study_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S2405-9390(18)30239-9 DB - PRIME DP - Unbound Medicine ER -