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A Comprehensive Approach to Assess Feathermeal as an Alternative Protein Source in Aquafeed
- Jasour, Mohammad
Sedigh, Wagner, Liane, Sundekilde, Ulrik K., Larsen, Bodil K., Greco, Ines, Orlien, Vibeke, Olsen, Karsten, Rasmussen, Hanne T., Hjermitslev, Niels H., Hammershøj, Marianne, Dalsgaard, Anne J. T., Dalsgaard, Trine K.
- Journal of agricultural and food chemistry 2017 v.65 no.48 pp. 10673-10684
- Oncorhynchus mykiss, amino acids, aquaculture feeds, digestibility, extrusion, feed conversion, feed intake, fish meal, growth performance, liver, metabolism, multivariate analysis, oxidation, protein sources, proteins, specific growth rate, temperature
- The effect of partially replacing fishmeal in aquafeed with feathermeal (FTH) at three levels (0%: FTH0, 8%: FTH8, 24%: FTH24) and two extrusion temperatures (100 and 130 °C) was evaluated in rainbow trout (Oncorhynchus mykiss) with respect to growth performance, metabolism response, and oxidative status of the feed proteins. Multivariate data analyses revealed that FTH24 correlated positively with high levels of oxidation products, amino acids (AA) racemization, glucogenic AAs level in liver, feed intake (FI), specific growth rate (SGR), and feed conversion ratio (FCR); and low AAs digestibility. Both FI and SGR were significantly increased when 8 and 24% feathermeal was included in the feed extruded at 100 °C, while there was a negative effect on FCR in fish fed FTH24. In conclusion, higher oxidation levels in FTH24 may give rise to metabolic alterations while lower levels of FTH may be considered as fishmeal substitute in aquafeed for rainbow trout.