WISHH Perspectives

Research Investigates Potential for Soy Protein Concentrate in Juvenile Pearl Gentian Grouper Diets

Ongoing research uncovers opportunities for soybean protein concentrate to serve as a sustainable replacement for fishmeal for many aquaculture species. Research projects like this one for pearl gentian grouper, a hybrid species with high protein requirements, help determine where soy fits well. Initial results for this species show inclusion levels should be kept below 30%, but that soy can play a role.

Soybean meal is one of the most suitable alternatives to substitute for fishmeal in aquatic animal feeds due to its high protein content, good balance of essential amino acids (EAA) and lower cost. Soy protein concentrate (SPC) – made by moving a portion of the carbohydrates (sugars) from dehulled and defatted soy flakes through aqueous ethanol – has similar content of crude proteins and essential amino acids compared to fishmeal, along with lower anti-nutritional factors.

Several studies have assessed the influence of SPC on fish during the past 20 years, and results showed that different species have unequal levels of tolerance for SPC. Research has shown that SPC can effectively replace fishmeal as a protein source in the diet of some commercially important fishes like Atlantic salmon, rainbow trout and pompano, while other species only tolerate some levels of SPC.

The pearl gentian grouper – a hybrid species (Epinephelus lanceolatus ♂ × E. fuscoguttatus ♀) – is an important commercial fish that grows rapidly, has strong disease resistance and is highly nutritious.

CLICK HERE TO CONTINUE READING THIS ARTICLE.

Previous posts:

USDA Releases 2020-2025 Dietary Guidelines for Americans

The foods and beverages that people consume have a profound impact on their health. Soy’s contributions to a healthy diet were recognized in the newly released 2020-2025 USDA Dietary Guidelines. This edition marks the first time the guidelines provide recommendations by life stage,

Soyfoods Help Worldwide Consumers Pursue Their Fitness Goals

By: Linda Funk, Flavorful Insight As global consumers embrace the exercise and fitness trend, look for them to increase their protein intake and purchase sports nutrition products, including those incorporating U.S.-grown soy. According to the Global Wellness Institute, the global physical activity economy will

World Fisheries Day Video: Building an Association

WISHH salutes the leaders of the new Cambodian Aquaculturist Association (CAA) as we recognize World Fisheries Day on Nov. 21. Launched Sept. 22, 2020, the young association has already achieved progress that aligns with the Cambodian government’s goals for economic