Gastrointestinal Strongyles Egg Excretion in Relation to Age, Gender, and Management of Horses in Italy.
Abstract: Current equine helminth control strategies play a key role in strongyle epidemiology and anthelmintic resistance and have led to the recommendation for new treatment plans, which include diagnostic and efficacy surveillance. Assessing the equine strongyle distribution patterns would thus be useful and this study describes the strongyle prevalence in the equine population in Italy through coprological analysis and coproculture. In addition, individual data on each animal were collected in order to identify risk factors associated with strongyle egg shedding. Of the total number of stables investigated, 86.4% were found to have at least one positive animal and a 39.5% prevalence of strongyle egg shedding with a mean eggs per gram (EPG) of 245. A total of 80% of the total recorded EPG was shed from 12.8% of positive horses, thus confirming the need for new targeted intervention strategies. Significant differences in parasite prevalence were found based on season, sex, geographical distribution, management and rearing system, and breed. Significantly lower EPG values were found in horses that had received anthelmintic treatment, and macrocyclic lactones (MLs) were the most effective. Lastly, although large strongyles are more pathogenic, horses in Italy are mainly burdened by small strongyles, which pose an important animal health risk requiring continuous parasitological monitoring.
Publication Date: 2020-12-03 PubMed ID: 33287298PubMed Central: PMC7761647DOI: 10.3390/ani10122283Google Scholar: Lookup
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Summary
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This research investigated the prevalence and distribution of strongyle parasites in the horse population in Italy. It found a significant number of horses were excreting strongyle eggs and identified various risk factors related to this parasitic infection, including age, gender, and management strategies, among others.
Overview of the Study
- This study focused on strongyle parasites, which are of significant health concern for horses. It sought to describe their distribution in the equine population in Italy through coprological analysis (the study of feces) and coproculture (growing parasites from feces in a lab setting).
- The researchers collected individual data from each horse to pinpoint potential risk factors associated with strongyle egg shedding. The aim was to provide valuable insights that can guide more targeted and effective intervention strategies.
Key Findings
- The study established that 86.4% of the stables investigated had at least one horse testing positive for strongyle eggs. In terms of the overall equine population, the prevalence of strongyle egg shedding was 39.5%, with an average of 245 eggs per gram.
- Interestingly, 80% of the total recorded egg shedding came from 12.8% of the positively tested horses. This finding reinforces the importance of targeted interventions in controlling strongyle parasites.
- Significant variations in parasite prevalence were found depending on factors such as season, sex, geographical location, management and rearing system, and breed of the horse. Hence, these factors should be considered in the development of parasite control strategies.
- Anthelmintic treatment, particularly macrocyclic lactones (MLs), showed efficacy in reducing egg shedding. Notably lower egg counts were reported in horses that had received such treatment.
- While large strongyles are more pathogenic (disease-causing), small strongyles were found to be the main burden for horses in Italy. Therefore, continuous parasitological monitoring is crucial to address this significant animal health risk in the region.
Cite This Article
APA
Scala A, Tamponi C, Sanna G, Predieri G, Dessì G, Sedda G, Buono F, Cappai MG, Veneziano V, Varcasia A.
(2020).
Gastrointestinal Strongyles Egg Excretion in Relation to Age, Gender, and Management of Horses in Italy.
Animals (Basel), 10(12), 2283.
https://doi.org/10.3390/ani10122283 Publication
Researcher Affiliations
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy.
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy.
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy.
- ACME S.r.l., Corte Tegge, 42025 Cavriago RE, Italy.
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy.
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy.
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, 80138 Naples, Italy.
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy.
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, 80138 Naples, Italy.
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy.
Conflict of Interest Statement
The authors declare no conflict of interest.
References
This article includes 57 references
- Salas-Romero J, Gómez-Cabrera KA, Salas JE, Vázquez R, Arenal A, Nielsen MK. First report of anthelmintic resistance of equine cyathostomins in Cuba.. Vet Parasitol Reg Stud Reports 2018 Aug;13:220-223.
- Heidi A.B., Wade T.N.. Drug Resistance in Equine Parasites: An Emerging Global Problem.. J. Equine Vet. Sci. 2009;29:285–295.
- Bellaw JL, Pagan J, Cadell S, Phethean E, Donecker JM, Nielsen MK. Objective evaluation of two deworming regimens in young Thoroughbreds using parasitological and performance parameters.. Vet Parasitol 2016 May 15;221:69-75.
- Love S, Murphy D, Mellor D. Pathogenicity of cyathostome infection.. Vet Parasitol 1999 Aug 31;85(2-3):113-21; discussion 121-2, 215-25.
- Nielsen MK, Vidyashankar AN, Andersen UV, Delisi K, Pilegaard K, Kaplan RM. Effects of fecal collection and storage factors on strongylid egg counts in horses.. Vet Parasitol 2010 Jan 20;167(1):55-61.
- Nielsen MK, Vidyashankar AN, Olsen SN, Monrad J, Thamsborg SM. Strongylus vulgaris associated with usage of selective therapy on Danish horse farms-is it reemerging?. Vet Parasitol 2012 Oct 26;189(2-4):260-6.
- Cain JL, Foulk D, Jedrzejewski E, Stofanak H, Nielsen MK. The importance of anthelmintic efficacy monitoring: results of an outreach effort.. Parasitol Res 2019 Oct;118(10):2877-2883.
- Relf VE, Morgan ER, Hodgkinson JE, Matthews JB. Helminth egg excretion with regard to age, gender and management practices on UK Thoroughbred studs.. Parasitology 2013 Apr;140(5):641-52.
- Fayet G.. Cyathostomes et Anoplocephales en France.. Action vétérinaire. Edition Speciale Veterinaire Maison Alfort Paris, France: 2001. pp. 8–9.
- Peregrine AS, McEwen B, Bienzle D, Koch TG, Weese JS. Larval cyathostominosis in horses in Ontario: an emerging disease?. Can Vet J 2006 Jan;47(1):80-2.
- Becher AM, van Doorn DC, Pfister K, Kaplan RM, Reist M, Nielsen MK. Equine parasite control and the role of national legislation - A multinational questionnaire survey.. Vet Parasitol 2018 Aug 15;259:6-12.
- Nielsen M.K., Mittel L., Grice A., Erskine M., Graves E., Vaala W., Tully R.C., French D.D., Bowman R., Kaplan R.M.. AAEP Parasite Control Guidelines.. Online at American Association of Equine Practitioners 2019.
- Nielsen MK, Branan MA, Wiedenheft AM, Digianantonio R, Garber LP, Kopral CA, Phillippi-Taylor AM, Traub-Dargatz JL. Parasite control strategies used by equine owners in the United States: A national survey.. Vet Parasitol 2018 Jan 30;250:45-51.
- Aboling S, Drotleff AM, Cappai MG, Kamphues J. Contamination with ergot bodies (Claviceps purpurea sensu lato) of two horse pastures in Northern Germany.. Mycotoxin Res 2016 Nov;32(4):207-219.
- Cappai MG, Lunesu MG, Accioni F, Liscia M, Pusceddu M, Burrai L, Nieddu M, Dimauro C, Boatto G, Pinna W. Blood serum retinol levels in Asinara white donkeys reflect albinism-induced metabolic adaptation to photoperiod at Mediterranean latitudes.. Ecol Evol 2017 Jan;7(1):390-398.
- Cappai MG, Pudda F, Wolf P, Accioni F, Boatto G, Pinna W. Variation of Hematochemical Profile and Vitamin E Status in Feral Giara Horses From Free Grazing in the Wild to Hay Feeding During Captivity.. J Equine Vet Sci 2020 Nov;94:103220.
- Stratford CH, Lester HE, Pickles KJ, McGorum BC, Matthews JB. An investigation of anthelmintic efficacy against strongyles on equine yards in Scotland.. Equine Vet J 2014 Jan;46(1):17-24.
- Sanna G, Pipia AP, Tamponi C, Manca R, Varcasia A, Traversa D, Scala A. Anthelmintics efficacy against intestinal strongyles in horses of Sardinia, Italy.. Parasite Epidemiol Control 2016 Jun;1(2):15-19.
- Peregrine AS, Molento MB, Kaplan RM, Nielsen MK. Anthelmintic resistance in important parasites of horses: does it really matter?. Vet Parasitol 2014 Mar 17;201(1-2):1-8.
- Gokbulut C, McKellar QA. Anthelmintic drugs used in equine species.. Vet Parasitol 2018 Sep 15;261:27-52.
- Buono F., Roncoroni C., Pacifico L., Piantedosi D., Neola B., Barile L.V., Fagiolo A., Várady M., Veneziano V.. Cyathostominae egg reappeareance period after treatment with major horse anthelmintics in donkeys.. J. Equine Vet. Sci. 2018;65:6–11.
- Lyons ET, Tolliver SC, Collins SS. Probable reason why small strongyle EPG counts are returning "early" after ivermectin treatment of horses on a farm in Central Kentucky.. Parasitol Res 2009 Feb;104(3):569-74.
- Lyons ET, Tolliver SC, Kuzmina TA, Collins SS. Critical tests evaluating efficacy of moxidectin against small strongyles in horses from a herd for which reduced activity had been found in field tests in Central Kentucky.. Parasitol Res 2010 Nov;107(6):1495-8.
- Lyons ET, Tolliver SC. Further indication of lowered activity of ivermectin on immature small strongyles in the intestinal lumen of horses on a farm in Central Kentucky.. Parasitol Res 2013 Feb;112(2):889-91.
- Buono F, Pacifico L, Piantedosi D, Sgroi G, Neola B, Roncoroni C, Genovese A, Rufrano D, Veneziano V. Preliminary Observations of the Effect of Garlic on Egg Shedding in Horses Naturally Infected by Intestinal Strongyles.. J Equine Vet Sci 2019 Jan;72:79-83.
- Duncan JL, Love S. Preliminary observations on an alternative strategy for the control of horse strongyles.. Equine Vet J 1991 May;23(3):226-8.
- Gomez HH, Georgi JR. Equine helminth infections: control by selective chemotherapy.. Equine Vet J 1991 May;23(3):198-200.
- Nielsen MK, Reinemeyer CR, Donecker JM, Leathwick DM, Marchiondo AA, Kaplan RM. Anthelmintic resistance in equine parasites--current evidence and knowledge gaps.. Vet Parasitol 2014 Jul 30;204(1-2):55-63.
- Lester HE, Matthews JB. Faecal worm egg count analysis for targeting anthelmintic treatment in horses: points to consider.. Equine Vet J 2014 Mar;46(2):139-45.
- Wood EL, Matthews JB, Stephenson S, Slote M, Nussey DH. Variation in fecal egg counts in horses managed for conservation purposes: individual egg shedding consistency, age effects and seasonal variation.. Parasitology 2013 Jan;140(1):115-28.
- Kornaś S, Sallé G, Skalska M, David I, Ricard A, Cabaret J. Estimation of genetic parameters for resistance to gastro-intestinal nematodes in pure blood Arabian horses.. Int J Parasitol 2015 Mar;45(4):237-42.
- Scheuerle MC, Stear MJ, Honeder A, Becher AM, Pfister K. Repeatability of strongyle egg counts in naturally infected horses.. Vet Parasitol 2016 Sep 15;228:103-107.
- Stratford CH, McGorum BC, Pickles KJ, Matthews JB. An update on cyathostomins: anthelmintic resistance and diagnostic tools.. Equine Vet J Suppl 2011 Aug;(39):133-9.
- Lester HE, Spanton J, Stratford CH, Bartley DJ, Morgan ER, Hodgkinson JE, Coumbe K, Mair T, Swan B, Lemon G, Cookson R, Matthews JB. Anthelmintic efficacy against cyathostomins in horses in Southern England.. Vet Parasitol 2013 Oct 18;197(1-2):189-96.
- Nielsen MK, Branan MA, Wiedenheft AM, Digianantonio R, Scare JA, Bellaw JL, Garber LP, Kopral CA, Phillippi-Taylor AM, Traub-Dargatz JL. Risk factors associated with strongylid egg count prevalence and abundance in the United States equine population.. Vet Parasitol 2018 Jun 15;257:58-68.
- Traversa D, Milillo P, Barnes H, von Samson-Himmelstjerna G, Schurmann S, Demeler J, Otranto D, Lia RP, Perrucci S, Frangipane di Regalbono A, Beraldo P, Amodie D, Rohn K, Cobb R, Boeckh A. Distribution and species-specific occurrence of cyathostomins (Nematoda, Strongylida) in naturally infected horses from Italy, United Kingdom and Germany.. Vet Parasitol 2010 Feb 26;168(1-2):84-92.
- Sconza S, Di Cesare A, Iorio R, Bartolini R, Paoletti B, Traversa D. Cyathostomin faecal egg counts in horse farms from Central Italy.. Vet Ital 2018 Dec 31;54(4):317-322.
- Raynaud JP. [Study of the efficiency of a quantitative coproscopic technic for the routine diagnosis and control of parasitic infestations of cattle, sheep, horses and swine].. Ann Parasitol Hum Comp 1970 May-Jun;45(3):321-42.
- Ambrosi M.. Parassitologia Zootecnica.. Milan, Italy: 1995. p. 244.
- Euzeby J.. Diagnostic Experimental des Helminthoses Animals-Travaux Pratiques d’Helminthologie Veterinaire.. Informations Techniques des Services Vétérinaires Paris, France: 1981. p. 176.
- Ministry of Agriculture Fisheries and Food. Manual of Veterinary Parasitological Techniques.. London, UK: 1986. Technical Bulletin No. 18.
- Cernea M., Madeira de Carvalho L.M., Cozma V.. Atlas de Diagnostic al Strongilidozelor la Ecvine.. Cluj-Napoca, Romania: 2008.
- Kaplan R.M., Nielsen M.K.. An evidence-based approach to equine parasite control: It ain’t the 60s anymore.. Equine Vet. Educ. 2010;22:306–316.
- Pilo C, Altea A, Pirino S, Nicolussi P, Varcasia A, Genchi M, Scala A. Strongylus vulgaris (Looss, 1900) in horses in Italy: is it still a problem?. Vet Parasitol 2012 Mar 23;184(2-4):161-7.
- Nielsen MK, Jacobsen S, Olsen SN, Bousquet E, Pihl T. Nonstrangulating intestinal infarction associated with Strongylus vulgaris in referred Danish equine cases.. Equine Vet J 2016 May;48(3):376-9.
- Kornaś S, Cabaret J, Skalska M, Nowosad B. Horse infection with intestinal helminths in relation to age, sex, access to grass and farm system.. Vet Parasitol 2010 Dec 15;174(3-4):285-91.
- Leathwick DM, Donecker JM, Nielsen MK. A model for the dynamics of the free-living stages of equine cyathostomins.. Vet Parasitol 2015 Apr 30;209(3-4):210-20.
- Pietrobelli M., Shiff D., Battelli G., Giordani A.. Indagine sulle parassitosi intestinali degli equini in provincia di Udine.. Arch. Vet. Ital. 1995;46:225–232.
- Scare JA, Steuer AE, Gravatte HS, Kálmán C, Ramires L, Dias de Castro LL, Norris JK, Miller F, Camargo F, Lawyer A, De Pedro P, Jolly B, Nielsen MK. Management practices associated with strongylid parasite prevalence on horse farms in rural counties of Kentucky.. Vet Parasitol Reg Stud Reports 2018 Dec;14:25-31.
- Genchi C., Duncan J.L.. Horse parasites whit special emphasis on gastrointestinal helminth and Gasterophilus infections: Un update on control and treatment.. Ippologia 2009;20:15–32.
- Höglund J, Ljungström BL, Nilsson O, Lundquist H, Osterman E, Uggla A. Occurrence of Gasterophilus intestinalis and some parasitic nematodes of horses in Sweden.. Acta Vet Scand 1997;38(2):157-65.
- Larsen MM, Lendal S, Chriél M, Olsen SN, Bjørn H. Risk factors for high endoparasitic burden and the efficiency of a single anthelmintic treatment of Danish horses.. Acta Vet Scand 2002;43(2):99-106.
- Francisco I, Arias M, Cortiñas FJ, Francisco R, Mochales E, Dacal V, Suárez JL, Uriarte J, Morrondo P, Sánchez-Andrade R, Díez-Baños P, Paz-Silva A. Intrinsic Factors Influencing the Infection by Helminth Parasites in Horses under an Oceanic Climate Area (NW Spain).. J Parasitol Res 2009;2009.
- Tzelos T, Barbeito JS, Nielsen MK, Morgan ER, Hodgkinson JE, Matthews JB. Strongyle egg reappearance period after moxidectin treatment and its relationship with management factors in UK equine populations.. Vet Parasitol 2017 Apr 15;237:70-76.
- Robert M, Hu W, Nielsen MK, Stowe CJ. Attitudes towards implementation of surveillance-based parasite control on Kentucky Thoroughbred farms - Current strategies, awareness and willingness-to-pay.. Equine Vet J 2015 Nov;47(6):694-700.
- Porr C.A.S., Hedinger V.F., Hamm L.R., Ernst M.M., Papajeski B.M., Santiago M.L., Davis A.J.. Effects of Ivermectin and Moxidectin on Fecal Egg Count and Egg Reappearance Rate in Horses.. J. Equine Vet. Sci. 2017;57:51–55.
- Barnes EH, Dobson RJ, Barger IA. Worm control and anthelmintic resistance: adventures with a model.. Parasitol Today 1995 Feb;11(2):56-63.
Citations
This article has been cited 5 times.- Elghryani N, McOwan T, Mincher C, Duggan V, de Waal T. Estimating the Prevalence and Factors Affecting the Shedding of Helminth Eggs in Irish Equine Populations.. Animals (Basel) 2023 Feb 7;13(4).
- D'Anza E, Buono F, Albarella S, Castaldo E, Pugliano M, Iannuzzi A, Cascone I, Battista E, Peretti V, Ciotola F. Chromosome Instability in Pony of Esperia Breed Naturally Infected by Intestinal Strongylidae.. Animals (Basel) 2022 Oct 18;12(20).
- Alemayehu MT, Abebe BK, Haile SM. Investigation of Strongyle Prevalence and Associated Risk Factors in Horses in and around Alage District, Ethiopia.. J Parasitol Res 2022;2022:3935008.
- Dibakou SE, Maloueki U, Ngoubangoye B, Boundenga L, Ntie S, Tsoumbou TA, Moussadji C, Zang RO, Kombila D, Basset D. Diversity of gastrointestinal parasites in sympatric mammals in Moukalaba-Doudou National Park, Gabon.. Vet World 2021 Dec;14(12):3149-3155.
- Furtado T, King M, Perkins E, McGowan C, Chubbock S, Hannelly E, Rogers J, Pinchbeck G. An Exploration of Environmentally Sustainable Practices Associated with Alternative Grazing Management System Use for Horses, Ponies, Donkeys and Mules in the UK.. Animals (Basel) 2022 Jan 8;12(2).
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