154167
It is kept by Bulgarian Poultry Institute in Stara Zagora and a few Bulgarian breeders members of Bulgarian Poultry Breeders Association .
 Stara Zagora
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Stara Zagora