The present study addresses the use of microalga Spirulina maxima as a protein source in diets for tilapia, Oreochromis mossambicus (Peters), fry. Animal was replaced with algae at ratios 20%, 40%, 60%, 80% and 100%, substitution effect compared control diet which fish meal sole protein. An additional 100% spirulina supplemented phosphorous to test possible mineral deficiency plant-protein-based diet. six treatments were tested triplicate closed-recirculating system where fed by hand 6%...

The apparent digestibility coefficients (ADC) of poultry by-product meal-pet food grade (PBM) and porcine meal (PM) were determined for fingerling male Nile tilapia. ADC protein 98.1% 92.3% in PBM PM, 87.1% 79.4% energy. PM then used as complete replacements fish (FM) practical diets tilapia formulated to contain equal digestible (300 g kg−1) energy (16.74 MJ per 100 g) on an as-fed basis. Fingerlings (mean initial weight ±SD, 9.5 ± 0.015 fed 8 weeks one the four diets: FM-, PBM- or PM-based...

In this study, the effect as growth promoter of five lactic acid strains (Enterococcus faecium, E. durans, Leuconostoc sp., Streptococcus sp. I and II), isolated from intestinal tract Nile tilapia (Oreochromis niloticus), was evaluated. Eight isocaloric diets were formulated: one containing 40% protein positive control, seven with 27% protein. Five supplemented bacteria in a concentration 2.5x106 cfu g-1 diet. A commercial probiotic based on S. faecium Lactobacillus acidophilus added at same...

This study tested the use of sunflower seed meal as a dietary protein replacement for fishmeal in practical diets tilapia fingerlings. In order to determine optimum substitution level this species, was used replace 10%, 20%, 30%, 40% and 50% containing overall. During 70-day feeding period, 10% 20% plant provided best growth efficiency results, with values statistically similar those control diet based on sole protein. The unitary cost index showed highest profit meal. Growth depletion...

A 63 day–1 feeding trial was conducted under laboratory conditions to evaluate the effects of substituting animal protein with a mixture plant feedstuffs including 25, 30, 35, 40 and 45% torula yeast (Candida utilis), 20% soybean meal 15% Alfalfa Leaf Protein Concentrate (ALC), in diets for tilapia (Oreochromis mossambicus Peters) fry. Feeding efficiency compared against diet fish as sole source. Diet nutritional quality very similar independent composition, no differences growth parameters,...

This study evaluated the effects of two types probiotics, a mix bacteria and one yeast, on growth performance intestinal enzyme activity in Nile tilapia. Three diets were formulated containing optimum protein level (40%) for tilapia fry: was supplemented at 0.1% with bacterial mixture containingStreptococcus faecium and Lactobacillus acidophilus; second yeast Saccharomyces cerevisiae; third, complemented control diet without supplements. Two additional to contain 27% serve as stress factor....

Abstract This study provides information on the use of shrimp head silage protein hydrolysate (SPH) as an alternative source for tilapia feeding. Six diets (28% protein, 12% lipid) were prepared where fishmeal was replaced at levels 0 (control), 10, 15, 20, 25 and 30% with hydrolysate. The supplied to Nile fry (338 mg initial weight) stocked in plastic recirculating 20 l tanks (10 animals per tank), three replicates treatment. After 8 week experimental period, fish fed containing 10 15% SPH...

Animal by-product meals (ABM) were substituted for fish meal in five experimental diets Nile tilapia fry, Oreochromis niloticus (L), with 25%, 50%, 75% and 100% substitution. Two ABM tested, one 50:50 animal lipid:soybean oil, the other oil as attractant. In general, best growth feeding performance was obtained a control diet based on sole protein, but results not statistically different from those soybean oil. A simple cost analysis suggested better economic efficiency when fed ABM. It...

Abstract The objective of this study was to generate information for the development Isostichopus badionotus culture protocols by determining optimal spawning methods, egg production, length and duration larval stages, habitat settlement preferences. Studies performed during seasons 2010 2011 showed that organism spawns between July November without mechanical or chemical induction. has five well‐defined stages: early, mid late auricularia, doliolaria, pentactula. Juveniles (654.3 µm length)...

A comparison was made of some productive traits Stirling Nile tilapia (wild type) (Oreochromis niloticus, Linnaeus) and red hybrid (Florida tilapia× O. niloticus) males during a 98-day grow-out period. Twenty-two from each genetic group with initial weights 139.0 g for niloticus 207.3 the were placed in triplicate tanks. The fish fed feed containing 36.8% crude protein. Survival 97.0% 83.3% niloticus. Daily individual weight gains 2.95 2.50 final body 473.0 348.8 respectively. Fillet yield...

During the tuna canning process, about 52~54% of total weight fish is discarded as waste, which can be processed in order to obtain byproducts meal (TBM), or stabilized silage hydrolysates (TSH). Both products were tested replacements soybean (SBM), diets for fingerling male Nile tilapia Oreochromis niloticus. Seven test isonitrogenous (35% CP) and isoenergetic (19 kJ g-1): a basal diet contained SBM main protein source (TSH0); four experimental had increasing inclusion levels TSH replacing...