Veterinary Parasitology 206 (2014) 227–231
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Veterinary Parasitology
jo u r nal homep age: www.elsevier.com/locate/vetpar
Comparison of Toxocara eggs in hair and faecal samples from
owned dogs and cats collected in Ankara, Turkey
Hatice Öge
a,∗
, Semih Öge
a
, Gökben Özbakıs ¸
a
, Safa Gürcan
b
a
Ankara University, Faculty of Veterinary Medicine, Department of Parasitology, 06110 Ankara, Turkey
b
Ankara University, Faculty of Veterinary Medicine, Department of Biostatistic, 06110 Ankara, Turkey
a r t i c l e i n f o
Article history:
Received 16 May 2014
Received in revised form 2 October 2014
Accepted 4 October 2014
Keywords:
Toxocara canis
Toxocara cati
Diagnoses
Zoonoses
Owned dog–cat
Hair–faeces
a b s t r a c t
This study was undertaken to determine the prevalence of Toxocara eggs on hair and in fae-
ces of healthy owned cats and dogs and to make comparisons between data (sex, age, host
factor, etc.) collected from dogs and cats. Toxocara eggs were found on the hair of 14% of 100
dogs and 22% of 100 cats. In total, 58 and 136 eggs were recovered from the hair samples
of examined cats and dogs, respectively. Of the total number of eggs, 2 were classified as
embryonated in cats. One of the eggs recovered was embryonating in dogs. The maximum
number of eggs was found in the tail bottom of cats (28 eggs) and dogs (58 eggs). As well
as finding Toxocara eggs in dogs and cats hair, we also found eggs of some helminthic par-
asites; such as Dicrocoelium sp., Fasciola sp., Taenia sp., Dipylidium caninum and Toxascaris
leonina. In addition, faecal samples of same dogs and cats were also examined by two tech-
niques (centrifugal flotation and sedimentation): Toxocara eggs were found in 5% and 13%
of dogs and cats faeces, respectively. But, 14% of the dogs and 22% of the cats were positive
for Toxocara eggs on hair. The prevalence of eggs in faecal samples was lower than those
detected from hair samples (P < 0.05). Two techniques for recovering Toxocara eggs from
faecal samples were tested for efficiency and suitability for routine use. The results were
expressed as the percentage rate of recovery of Toxocara eggs in positive faecal samples.
The recovery rate was better with the method of sedimentation than with the method of
flotation (P < 0.05). This study indicates that dogs and cats without internal infections were
shown to have eggs on their hair and so uninfected animals also pose a threat in terms of
the eggs present on their hair, albeit a small risk.
© 2014 Elsevier B.V. All rights reserved.
1. Introduction
Toxocara canis and Toxocara cati are common round-
worm parasites of dogs and cats, respectively. They are
cosmopolitan species and are also zoonotic parasites, and
cause visceral larva migrans (Overgaauw, 1997a; Taylor
et al., 2007; Bowman, 2009). The infection in humans
occurs primarily as a result of the ingestion of infective eggs
(Macpherson, 2013). Infection can also occur ingestion of
∗
Corresponding author. Tel.: +90 312 317 03 15/4387.
E-mail address: hoge@ankara.edu.tr (H. Öge).
arrested infective larvae in paratenic host, and ingestion of
contaminated raw vegetables or fruits (Smith et al., 2009;
Lee et al., 2010). Risk factors for infection in humans include
geophagia (especially in children), low socio-economic
level, breeding dogs, and failure to regularly pick up and
dispose of faeces or empty cat litter trays (Robertson
and Thompson, 2002). Soil and sandpits contamination
(while playing outdoor) can cause of toxocariasis in chil-
dren (Overgaauw, 1997a; Oge and Oge, 2000; Macpherson,
2005; Bowman, 2009). An alternative model of transmis-
sion is ingestion of eggs containing infective larvae on dog’s
hair (Wolfe and Wright, 2003; Aydenizöz-Özkayhan et al.,
2008; Roddie et al., 2008b; Amaral et al., 2010).
http://dx.doi.org/10.1016/j.vetpar.2014.10.005
0304-4017/© 2014 Elsevier B.V. All rights reserved.