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Copyright © Wydawnictwo Akademii Rolniczej we Wroclawiu, ISSN 1505-0297

Kalinowska B. , Gierdziewicz M. , Kania-Gierdziewicz J. 2010. GENETIC STRUCTURE ANALYSIS OF TATRA SHEPHERD DOG POPULATION IN AREA OF KRAKOW BRANCH OF POLISH KENNEL CLUB
I. INBREEDING AND RELATIONSHIP COEFFICIENTS, EJPAU 13(3), #02.
Available Online: http://www.ejpau.media.pl/volume13/issue3/abs-02.html

ABSTRACT

The study investigates inbreeding and relationship in the population of Tatra Shepherd
dogs whose records are kept in the herdbook of the Krakow Branch of the Polish
Kennel Club. Four-generation pedigrees of 34 Tatra Shepherd dogs, 19 males and
15 females, born in 1995–2007, were used as a material for creating pedigrees
of 150 individuals of both sexes (66 males, 84 females). The coefficients of
inbreeding (F_X) were estimated for all 150 animals and for each sex
separately, and the coefficients of relationship (R_XY) were calculated
for all animals, for each sex separately, and for dogs and bitches. Among all
the animals, 23.33% were inbred; about 50% of those belonged to the active population.
The proportion of inbred individuals was 27.27% for males and 20.24% for females.
The F_X values for all animals and for inbred individuals were 1.37%
and 5.85%, respectively. In the sex groups, F_X averaged 1.76% and
1.06% for all dogs and all bitches, and 6.64%, 5.23% for inbred dogs and inbred
bitches. In the population under study, 35.55% of pairs of individuals were related.
The average values of R_XY for all and related pairs were 5.19% and
14.59%, respectively. In males, 41.03% pairs were related, with R_XY for
all and inbred dogs averaging 6.12% and 14.92%, respectively. In females, those
values were slightly lower: 31.24% related pairs; R_XY averaging 4.53%
and 14.51% for all and related pairs, respectively. Only 36.15% of mixed male-female
pairs were related; the R_XY values averaged 5.24% and 14.49,% respectively,
for all and related pairs.

Key words: genetic structure, inbreeding, relationship, Tatra Shepherd dog.

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Bożena Kalinowska
Department of Swine and Small Ruminant Breeding,
University of Agriculture, Cracow, Poland
al. Mickiewicza 24/28, 30-059 Cracow, Poland
email: rzkalino@cyf-kr.edu.pl

Maciej Gierdziewicz
Department of Genetics and Animal Breeding,
University of Agriculture, Cracow, Poland
al. Mickiewicza 24/28, 30-059 Cracow, Poland
email: rzgierdz@cyf-kr.edu.pl

Joanna Kania-Gierdziewicz
Department of Genetics and Animal Breeding,
University of Agriculture, Cracow, Poland
al. Mickiewicza 24/28, 30-059 Cracow, Poland
email: rzkania@cyf-kr.edu.pl

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Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.

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