ABAH BIOFLUX Animal Biology & Animal Husbandry International Journal of the Bioflux Society Dietary substitution of protein concentrate of Ulva lactuca for soybean meal in the black tiger shrimp Penaeus monodon fry

Augusto Serrano, Rena Santizo, A Serrano
2014 unpublished
A feeding trial was conducted to test the protein concentrate of the green seaweed Ulva lactuca as a substitute for soybean meal in the diet of the black tiger shrimp Penaeus monodon fry. Experimental diets containing various replacement levels for soybean meal by weight were prepared, namely 0 (control diet), 15, 30 or 45 % Ulva protein concentrate (UPC). Survival rate was not affected by the diets. Feed intake (FI) was statistically similar in shrimp fed the control diet and diet containing
more » ... d diet containing 15 % UPC replacement while the FI of shrimps fed diets containing 30 % and 45 % were lower and were not significantly different from each other. SGR of shrimps fed the control diet was not significantly different from the values of those fed diets containing 15 % and 30 % UPC replacements while those fed diets containing 45 % UPC replacement exhibited significantly the lowest SGR. Protein gained of shrimps were statistically similar between those fed the control diet and those fed diets with 15 % and 30 % UPC while those fed diets at 45 % UPC was significantly lower than the three groups. Protein efficiency ratio (PER) was unaffected by the dietary treatments. Ulva protein concentrate could be a substitute for soybean meal in the diet of Penaeus monodon fry up to 30 % without compromising the survival, growth and feed utilization efficiency of the shrimp despite lower feed intake.