More feed questions

["Budler,Cindy" <natcon@afrox.boc.com>]

Hi all,

I have been feeding my endurance horses a formulated feed specifically
for endurance- 13 % protein, fat etc. It has got extremely expensive
lately and have been playing with the idea of making my own feed up-
basically grains, but need some info on ratio's and types of grains to
feed.
 My easy keeper has been getting a kilogram of the packaged feed a day
and about a kilo of oats added, together with sunflower oil added. If I
were to feed grains which should I feed?
Corn ? Oats ? Soyabeans? Alfalfa meal. Bran etc and in what ratios or
quantities? 
Our pastures are what we call Aragrostis- the equivalent of Sudan grass/
or Brome( I think) with some Bermuda interspersed. 
What other additives would I need to add??
Regards,
Cindy Budler
  Natcon
  Fabrication Division
  Afrox
  Germiston
  Gauteng
  South Africa
  Tel: Direct Line :(011) 871-1006
         Cellphone : 082 464 1809	
  Fax:(011) 873-4623
  E-Mail : natcon@afrox.boc.com