by A. Reza Kamarei, Ph.D., director, Nutrition Department
|Aquatic Feeds: The aquatic feeds processing lab manufactures
all types of research feeds for the marine fish and shrimp being
studied at OI. Aquatic feeds are formulated with known ingredients
and amounts. These ingredients are ground, mixed, and pelleted
to specific manufacturing parameters in order to meet the nutritional
and physical properties required by the different types of animals
All feeds manufactured are subjected to a rigorous quality control
program to ensure they meet industry standards for physical,
sanitary, and nutritional quality. The information generated
by the feed lab allows the commercial feed industry to develop
cost-effective feeds for the aquaculture farmer.
Aquatic Nutrition: This research seeks to find ways of reducing
feed costs while improving growth and maintaining animal health.
To do this, nutritionists must determine the nutritional requirements
of the animals for growth, health, and reproduction and then
try to find the most economical way of formulating feeds which
meet these needs. A good example would be replacing expensive
ingredients such as fish meal with less expensive ingredients
such as soybean or other plant meals. Other important areas of
nutrition research include how the animals are fed (feeding frequency,
feeding rate), and the interactions between the animals, the
feed, and the culture environment.
Aquatic Foods: This research integrates and investigates the
impact of feed inputs and culture system parameters on product
quality and safety. The goal is to tailor production and processing
methods to meet consumer demands for quality seafood, together
with increased convenience, availability, and safety. Specific
areas of research include: optimization of production parameters
to obtain desirable product characteristics such as flavor and
texture; development of innovative value-added technology and
heart-healthy aquacultured seafood products; improved utilization
of aquaculture and fishery processing by-products in foods; development
and testing of protocols for seafood safety compliance; and quality
testing and sensory evaluation of aquacultured seafood.
Nutritional Biochemistry: The nutritional biochemistry laboratory
investigates the nutritional components of shrimp pond ecosystems
and performs biochemical analyses. This helps to advance our
understanding of the role of compounds and micronutrients from
marine plankton in shrimp growth. Analytical services include
determination of the nutritional content (e.g. proximate composition,
fatty acids, amino acids, vitamins, minerals) of aquatic feeds
and aquatic foods.
Two major projects are currently underway in the Nutrition Department.
The tropical aquaculture project works to develop feeds for optimum
nutrition of cultured shrimp and finfish. The overall objective
of this project is to vertically integrate, from raw materials,
to developed feeds, to final aquacultured seafood products, the
science and technology required for sustainable production of
Pacific white shrimp, and the model tropical fish species, Pacific
threadfin and longfin amberjack.
The second project involves converting Alaska fish by-products
into value-added products and ingredients. It is being conducted
in collaboration with the USDA Agricultural Research Service,
the University of Alaska Fairbanks, and the University of Idaho.
The over-arching goal is to develop new knowledge to increase
the value of underutilized seafood processing by-products for
aquaculture and agriculture in a sustainable manner.
The Nutrition Department welcomes HPU researchers and students for collaboration
and internship opportunities. E-mail email@example.com.
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