http://www.v-stetsyuk.name/en/Alterling/Bulgar.html is someone's poor understanding and stating an old and refuted theory, most probably with a politicical idea in mind. This is not historical cite by any means; and the genetic research refutes that the Bulgars were Turks.
"...A peculiar
Slavic-
Mediterranean gene admixture is in the core of the Bulgarian nation, a new Bulgarian-Italian genetic study has revealed.
Gene probes of 855 Bulgarians, including individuals from the
country's Islam population, have been gathered and compared with other
European nations, Professor Draga Toncheva from the Sofia-based Medical
University has explained in an interview for the Bulgarian National
Radio.
The results have failed to show any Turkic connection in the Bulgarians nation's genesis, contrary to popular beliefs.
Croatians, Poles, Ukrainians and other Slavic nations are closest to Bulgarians, according to the study. However, Bulgarians are a peculiar type of Slavs, since they also have Mediterranean genes, head of the Bulgarian Academy of Sciences' Microbiology Institute Angel Galabov has pointed out.
The Bulgarians' "peculiarity" has probably been the result of their contacts with ancient Thracians, scientists reckon.
The place of origin of the Ancient Bulgarians is most likely Eastern
Iran, a group of anthropologists and scientists claimed in 2010 after an
exploratory trip to the Persian lands...."http://www.novinite.com/view_news.php?id=131894
"...The genotyping of 60 biallelic markers was performed in hierarchical
order by RFLP and DHPLC analyses. The position of Bulgarians among other
populations was visualized by Principal Component (PC) analysis.
About
80% of the total genetic variation in Bulgarians falls within
haplogroups E-M35, I-M170, J-M172, R-M17 and R-M269. This finding shows
that the Bulgarian haplogroup profile is congruent with those described
for most European populations.
Among the prehistoric events marked by
the observed haplogroups, the greatest contribution comes from the
range expansion of local Mesolithic foragers triggered by adoption of
agriculture introduced by a cadre of Near Eastern farmers. The Bulgarian
Y chromosome gene pool also bears signals of the recolonization from
different glacial refugia, the spread of agriculture from the Near East
and the expansion of early farmers along the Central and East European
river basins...." http://www.abstractsonline.com/Plan/ViewAbstract.aspx?sKey=006d5e3a-ea14-49ff-9b39-f0a042d39185&cKey=bfc88c56-5e93-4ee2-89e6-c3ab1bd25f5c&mKey={DFC2C4B1-FBCD-433D-86DD-B15521A77070}