Advances in Shrimp Nutrition
Stephen G. Newman Ph.D.
President
Aqua-In-Tech Inc.

Introduction

Basic Nutritional Requirements

Feed additives
–
Glucans
–
Bacterial Cell Wall
–
Nucleotides
–
Fucoidan
–
Others

Conclusion

Basic Nutritional Requirements
Protein levels are species and rearing environment
dependent

P. monodon, P. stylirostrus higher protein

P. vannamei-lower protein-plant derived OK


Glucan Effective Against WSSV

Bacterial Cell Walls
From both common groups of bacteria
Gram Positive-Peptidoglycan
Gram Negative-Lipopolysaccharide

Peptidoglycan

Peptidoglycan
Itami et al. 1998
P. japonicus fed 0.2 mg of PG per kg/bw/day
95 days
1. 7 days on and 7 off
2. Daily
3. 2 days on and five off
N=20
Continuous water borne challenge

Peptidoglycan

Lipopolysaccharide

Lipopolysaccharide

Lipopolysaccharide
Itami et al. Late 1980’s Kuruma prawns
8 to 11 adults (20 grams each)
1% suspension of dead bacterial material


Fucoidan

Fucoidan

Fucoidan
Sulfated polysaccharides with high affinity
enveloped viruses
Deeply embedded in algal cell walls
Activity against HIV, Herpes viruses and
WSSV

Fucoidan
Takashi et al. 1998
Fed two dosages 60 and 100 mg/kg/bw/day
Fed for 15 days
Waterborne Challenge
Substantial Protective benefit
Determined to be due to the sulfate group
Used a 70% pure product-$1300/kg
Cruder products may be effective as well

Fucoidan
Fucoidan
0
80
82
0
20
40