Natural abundance of ¹⁵N and ¹³C in fish tissues and the use of stable isotopes as dietary protein tracers in rainbow trout and gilthead sea bream

M. BELTRAN, J. FERNANDEZ-BORRAS, F. MEDALE, J. PEREZ-SANCHEZ, S. KAUSHIK and J. BLASCO

Aquaculture Nutrition 15 ( 1 ): 9 - 18 , 2009