Tetracyclines in Food and Feedingstuffs: From Regulation to Analytical Methods, Bacterial Resistance, and Environmental and Health Implications

Table 3

Legally bound threshold concentrations established for food commodities or particular animal tissue.

Pharmacologically active substance	Species	Tissue	Maximum residue limit (µg kg^−1)
Chlortetracycline/oxytetracycline/tetracycline	Cattle	Milk (µg L^−1)	100
		Muscle	200
		Liver	600
		Kidney	1200
	Poultry	Muscle	200
		Liver	600
		Kidney	1200
	Sheep	Milk (µg L^−1)	100
		Muscle	200
		Liver	600
		Kidney	1200
	Swine	Muscle	200
		Liver	600
		Kidney	1200
	Turkey	Muscle	200
		Liver	600
		Kidney	1200
	Fish (i.e., salmonids)	Muscle
	Lobster	Muscle
	Giant prawn (Penaeus monodon)	Muscle
		Eggs	400
		Honey	300
Doxycycline	Cattle, swine, poultry	Muscle	100
		Skin and fat	300
		Liver	300
		Kidney	600

only to oxytetracycline. Based on values set in [40, 41].