Development of an integrated approach to assessing the sanitary quality of feed for fur-bearing animals

Open Access

Table 2.

Comparable measurements of the level of ammonia and TVN in the protein concentrate, meat and bone meal and fish meal

Feed type	Measurement parameters	Ammonia and TVN level
Feed type	Measurement parameters	minor	medium		Maximum allowable
Protein concentrate	Ammonia (color)	light green	yellow–green	dark green	–
Meat and bone meal	TVN, mg 100 g⁻¹	70–105	105–175	175–300	–
	ammonia (color)	light green	yellow–green	dark green	–
	TVN, mg 100 g⁻¹	70–105	105–175	175–300	–
Fish meal	ammonia (color)	-	yellow–green	dark green	orange
Fish meal	TVN, mg 100 g⁻¹	-	105–175	175–300	>300

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