Effect of replacement of fish meal protein with boiled full fat soybean seeds and dried algae on growth performance, nutrient utilization and some blood parameters of Nile tilapia (Oreochromis niloticus)

Abstract

Effect of replacement of fish meal protein with boiled full fat soybean seeds and dried algae on growth performance, nutrient utilization and some blood parameters of Nile tilapia (Oreochromis niloticus)ABSTRACT ixture of boiled full fat soybean seeds and dried algae (Dunaliella spp.) at mixing level of 1:1 was tested to replace fish meal protein at 50% (soybean); 50% mixture ; 75% mixture ; 100% mixture and 100% soybean, on Nile tilapia fry of initial weight 1.2 ± 0.05 g. Results obtained are summarized as follows : 1-Incorporation of the mixture of soybean seeds with dried algae in diets of Nile tilapia fry at 50 and 75% levels released no significant effects on final weight average weight gain, daily gain and survival rates, compared to the control groups, while the same parameters were decreased significantly in the other treatment groups. 2-Replacing fish meal protein with the mixture of soybean seeds plus dried algae (1:1) at 50% level had insignificant effects on feed conversion and protein efficiency ratios compared to the control groups, while the same parameters were negatively affected in the other group.

Soybean protein concentrate as a protein source for totoaba (Totoaba macdonaldi) juveniles: Effect on intermediary metabolism and liver histological organization

“…Bañuelos-Vargas et al (2014) attributed the changes in AST and ALT to the higher inclusion of SPC 60% without taurine. In contrast, Attalla and Mikhail (2008) did not find relevant changes in the AST/ALT ratio when evaluating the effect of different soybean/algae protein percentages in tilapia diets. However, differences between current data and the study mentioned above may be related to different diet formulation, ingredient properties, fish feeding habits and physiological capacity for both species regarding dietary protein alternative sources.…”

“…The AST/ALT ratio can be used as an indicator of liver damage, and as such it is widely used in nutritional studies in livestock and toxicological studies in fish. However, there is partial information on its use for nutritional studies in warm water farmed fish (Sandnes et al, 1988;Attalla and Mikhail, 2008;Mozanzadeh et al, 2018;). The main reason for such limited use of the AST/ALT ratio as a health indicator in aquaculture is the absence of reference values under different farming scenarios and unsuitable nutritional conditions.…”

Co-cultivation of Rhodotorula glutinis and Chlorella pyrenoidosa to improve nutrient removal and protein content by their synergistic relationship

“…have enough potential to be applied as a protein source for carnivorous and omnivorous sh and prawns at the postlarvae/ juvenile stage. 54,[57][58][59][60] Therefore, this method described in this paper, which has a high protein content, has great potential, will be promising for the development of the wastewater treatment and breeding industries.…”

An overview of the utilisation of microalgae biomass derived from nutrient recycling of wet market wastewater and slaughterhouse wastewater

“…The highest growth rate of Nile Tilapia had been reported by Attalla and Mikhail Badwy et al (2008). Attalla and Mikhail (2008) used Dunaliella spp. as feeds and achieved 50-75% growth rates for Nile tilapia.…”