The Y-chromosome in English Thoroughbred racing stock

Just came across an interesting article from 2005 in the New Scientist: Irish researchers analyzing Y-chromosome sequences in the DNA of a sample representative of the 500,000 or so English Thoroughbred racehorses alive today found that 95% of these horses traced to a single horse in the tail male: the Darley Arabian, born in 1700 (who by the way, was a Ma’naghi from the Fad’aan Bedouin tribe, which makes this strain one of the oldest recorded). I wonder how many different sire lines a similar study could identify within the Arabian horse population…

Photo and Hujja of the day: Hakayah

Following the recent entry on the pretty black mare Shams al-Ghurub, and to Joe Ferriss recalling that he saw her dam Hakayah in 1996 in Syria, I am posting a picture of Hakayah that I took back in 1989. Hakayah was then with Ahmad (Abu Tahir) al-Ghalioun, who had leased her from her owner, the Shaykh of the Bedouin tribe of Tai.  I don’t remember anything about the foal at her side. Here is my partial translation to English of the Arabic hujjah (certificate of authenticity) of Hakayah, skipping the introductory religious blessings:   “I, shaykh Mohammad al-Abd al-Razzaq al-Ta’i, testify, and my testimony is before God Most High, that the mare whose strain and marbat is Shuwaymat Sabbah and with the following description: [her] color [is] black, her age ten years old is from our horses, from the horses of the Tai, protected, without any impurities, her sire is the horse of Juhayyim, and he is Krush, and protected; the sire of her dam is the same horse, Krush Juhayyim, he is protected, and is from the horses of the Tai; the sire of her grand-dam is the horse of Juhayyim,  al-Hayfi, and he is protected; She is well known and bred [by us] one generation after the…