Fish meal replacement by soy protein from soymilk in the diets of red sea bream (Pagrus major). (8th March 2017)

• Record Type: Journal Article
• Authors: Biswas, A.; Araki, H.; Sakata, T.; Nakamori, T.; Kato, K.; Takii, K.
• Is Part Of: Aquaculture nutrition. Volume 23:Number 6(2017:Dec.)
• Page Start: 1379
• Page End: 1389
• Publication Date: 2017-03-08
• Subjects: antinutritional factors -- fish meal replacement -- growth performance -- phosphorus discharge -- red sea bream -- soymilk protein; Aquaculture -- Periodicals; Aquatic animals -- Feeding and feeds -- Periodicals; Fishes -- Feeding and feeds -- Periodicals; 639.3
• DOI: 10.1111/anu.12513
• Languages: English
• ISSNs: 1353-5773

Abstract

Abstract: Six isoenergetic diets were formulated as follows: fish meal (FM) 700 g kg –1 (control, C), FM 300 g kg –1 + soy protein concentrate 300 g kg –1 (SPC), FM 300 g kg –1 + enzyme‐treated SPC 300 g kg –1 (ESC), FM 170 g kg –1 + soy protein isolate 300 g kg –1 (SPI), FM 160 g kg –1 + enzyme‐treated SPI 300 g kg –1 (ESI) and FM 150 g kg –1 + conglycinin 300 g kg –1 (CG). Forty fish (3.9 g) were randomly distributed into each of eighteen 300‐L tanks, fed twice daily until satiation for 8 weeks. The final body weight, specific growth rate and condition factor did not show significant differences among the fish fed with diets C, SPC, ESC and ESI ( p > .05). The survival was significantly lower in fish fed with diets SPI and CG. Feed efficiency was significantly higher in fish fed with diets SPC and C than in fish fed with other diets ( p < .05). There were no significant differences in nutrients retention efficiencies in fish fed with diets C, SPC, ESC and ESI. A significantly higher phosphorus retention efficiency in fish fed with soymilk protein diets resulted in lower phosphorus discharge to the environment ( p < .05). These results suggest that the soymilk proteins can comfortably replace 570–770 g FM kg –1 diet of red sea bream juvenile, which will ensure significant ecological benefits through reducing phosphorus load to the environment.