Vet Bio Clin J. Vol. 5 No. 1, January 2023 pp: 40 – 44 DOI : 10.21776/ub.VetBioClinJ.2023.005.01.6 Website : http://vbcj.ub.ac.id E-mail : vbcj@ub.ac.id 40 Research Article Identification and Prevalence of Endoparasites in Timor Deer (Cervus timorensis) at Maliran Deer Captive Breeding Blitar Anindita Khairunnisa 1* , Nunuk Dyah Retno Lastuti 2 , Rahmi Sugihartuti 3 , Boedi Setiawan 4 , Setiawan Koesdarto 2 , Dhandy Koesoemo Wardhana 5 1 Student of Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya 2 Departement of Veterinary Parasitology, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya 3 Departement of Basic Medicine, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya 4 Departement of Veterinary Clinic, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya 5 Departement of Veterinary Public Health, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya * Email : anindita4869@gmail.com Citation : Khairunnisa, A., Lastuti, N. D. R., Sugihartuti, R., Setiawan, B., Koesdarto, S. &Wardhana, D. K. (2023). Identification and Prevalence of Endoparasites in Timor Deer (Cervus timorensis) at Maliran Deer Captive Breeding Blitar. Veterinary Biomedical and Clinical Journal, 5(1), 40– 44. https://doi.org/10.21776/ub.VetBioClinJ.20 23.005.01.6 Article history : Received : 10 May 2023 Accepted : 29 June 2023 Copyright: © 2023 by the authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (https://creativecommons.org/licenses/by- nc/4.0/) Abstract: Deer populations in captive breedings have the potential to develop health issues such as protozoa and helminth infections. Poor sanitation and environmental conditions are among the external factors facilitate the transmission of endoparasites within deer population in a captivity. The aim of this study was to identify and determine the prevalence of endoparasite infestation in Timor deer ( Cervus timorensis) in Maliran Captive Breeding, Blitar, Indonesia. Samples of 102 fresh feces, were taken during the rainy season from March to May 2021, and sent to Laboratory of Parasitology, Veterinary Medicine Faculty, Universitas Airlangga for fecal examination using sedimentation, flotation, as well as McMaster methods to determine the prevalence and the intensity of infestations. Results showed that 30 samples were detected positive, 7 samples (6.86%) were positive of Haemonchus spp. at the egg stage (range of 30-60 EPG; mild infestation); and 23 samples (22.55%) were positive of Eimeria spp. in oocyst stage (range of 200-800 OPG; mild to moderate infestation). This study provides a reference for the eradication of Haemonchiasis in the deer population in the study area. Keywords: deer, fecal examination, Haemonchus spp., Eimeria spp. INTRODUCTION Timor deer (Cervus timorensis) is one of the four species of native deer in Indonesia, namely Sambar deer, Bawean deer, and Muntjac. They have smaller body size, shorter legs, and longer tail compared with Sambar deer (Schroder, 1976). Timor deer is categorized as a vulnerable species based on the IUCN Red List category, since 2008, with the population decline was about 10% in each generation due to environmental degradation, loss of habitat, and poaching (International Union for Conservation of Nature and Natural Reserves, 2008). Effort to maintain and increase the population of Timor deer has been conducted through captive breeding. In the Maliran Deer Captive Breeding, Blitar, Indonesia, the opportunity for deer to be infected by various diseases is due to high humidity and rainfall suitable for parasites’ life (Semiadi & Nugraha, 2004). Other factors which influence the transmission of parasitic infestation are feeds, maintenance system, and hygiene environment (Handayani et al., 2015). The captive breeding is also