From what I can tell you are saying that people are cross breeding other breeds into Pakistani and Indian aseel breeds, if so then what you are sayings is right, I have seen people cross breed Pakistani aseels with other breeds from other countries, breeds like Thai game, Ga Noi, Shamo...
How often should birds be dewormed? I haven’t dewormed my birds in 2 years and non of them have been badly affected by worms accept for one which I slaughtered when it was not doing well.
Yes there are different breeds/strains one is of old Pakistani bloodline lakha colour and the the other is sajra Mianwali (I am not 100% sure about breed so I have asked the breeder)