| dc.description.abstract | This dissertation is a prospective study of a large group of privately owned dogs of
three Hungarian shepherd breeds. The dissertation provides an overview of the current
understanding of canine hip dysplasia, it highlights the characteristics and latest research
within this field. It explains the methods of early detection of inherited genes as well as the
ways to prevent the disease from developing in future breeding dogs. The data analysis
evaluates the various aspects of the Norberg angle in three Hungarian dog breeds: Mudi,
Pumi and Puli. In addition to this it presents the incidence, level of hip dysplasia (HD) and
the predisposition in the mentioned breeds in relation to influencing factors such as gender,
age, kennel, breed, owners gender, location code and year of birth.
The investigation showed that in Mudi, Pumi and Puli the incidence of hip dysplasia is
highest in category “A Free”, where 23 Pumi, 98 Puli and 41 Mudi dogs were categorized.
This equates to 32%, 50.7% and 64% respectively. Dogs grouped as borderline (B) were
15 Pumi, 47 Puli and 14 Mudi, thus 20.8%, 24.3% and 21.8% accordingly. This decreasing
trend of HD incidence continued with 29.2%, 16.5% and 4.7% of the dogs being regarded
as mildly (C) affected, 15.3%, 6.2% and 4.7% classified as moderately affected and with
2.7%, 2% and 4.7% of the dogs regarded as severely affected. This showed that Pumi was
the upmost-predisposed breed out of the three.
When comparing the expected and observed values of level of HD, the difference
between expected and observed values showed that 4 out of 5 levels of HD were
statistically significant. Thus, for category B, C, D and E there was a high discrepancy
between the expected and observed values, indicating that observed values (obtained by
veterinarians and clinicians) tended to underestimate the actual severity of the various
levels of HD.
In all conclusion: there were no significant impacts on the Norberg angle found in
our data set, with the exception of breed and kennel. None of the three Hungarian shepherd
breeds are significantly more or less predisposed to HD than any of the other small and
large breeds. We confirmed that environmental factors like kennel, thus feeding, raising
and keeping conditions adds to the already predisposed dog and makes the manifestation of
the disease even more unpredictable. | en |
