Ammonia Nitrogen Calculations

Ammonia Nitrogen Calculations



Nitrogen production as a factor of protein fed	= 6.25 x protein fed - nitrogen retained in tissues
Ammonia produced as a factor of feed fed (assuming commercial diets such as Salmonid)	= 0.03 x feed weight
% unionised ammonia of total ammonia	= 100 / (1 + antilog (pKa -pH))
	Where
	pH = pH value of sample
	pKa = 0.09018 + 2729.92 / (273 + T)
	T = Temperature ^oC