Protein 16.7%, Fat 6.4%, Fiber 3.2%

Ingredients per Kilogram
 

Vitamin A 15,000 ius Vitamin D3 2,000 ius Vitamin E 6 mg Vitamin B1 (thiamine) Vitamin B2 (Riboflavin) Vitamin B6 (Pyridoxine) Vitamin B12

iron cobalt manganese copper magnesium zinc sulphur

comprehensive range of limiting amino acids including Methionine and lysine.

You shouldn't have a problem switching your birds to MUSS at any stage.  Simply mix with their familiar product for a few days and slowly remove all of the old food in favor of MUSS.