The ICAR-Central Institute of Brackishwater Aquaculture (ICAR-CIBA) has signed a Memorandum of Understanding (MoU) with Odisha-based seafood processing and export company, BRC Marine Products, to explore the use of rice distillers’ dried grains with solubles (DDGS) as a feed component for Pacific white shrimp (Penaeus vannamei). The agreement aims to study the potential of DDGS in shrimp feed, addressing the need for alternative protein sources in aquaculture while promoting both economic and environmental benefits.
What is Rice DDGS?
Rice distillers’ dried grains with solubles (DDGS) is a nutrient-rich byproduct derived from the rice-based ethanol production process. Emerging as a valuable agricultural feed ingredient, it has gained traction for its utility in animal nutrition. The production process begins with the careful preparation of rice grains, which undergo cleaning, sorting, and grinding. The grains are then subjected to steam cooking, enabling enzymatic breakdown of carbohydrates. Subsequently, specialized yeast strains are introduced for fermentation, transforming rice sugars into ethanol over a 24-48 hour period.
After ethanol extraction, the residual product is dried, yielding a protein-dense, shelf-stable ingredient. With a protein content of 43-47%, moderate fat levels of 3-4%, and a caloric value of approximately 300-350 kilo calories per 100 grams, rice DDGS provides a comprehensive nutritional profile. It is further enriched with essential amino acids and trace minerals, making it an attractive and sustainable option for livestock and aquaculture feed.
ICAR-CIBA’s Research Objectives
The collaboration between ICAR-CIBA and the seafood company aims to evaluate the application of rice DDGS in the diet of Pacific white shrimp, a species integral to the aquaculture industry. By incorporating this byproduct, the study seeks to explore cost-effective, alternative feed options that reduce reliance on traditional protein sources like soybean meal. This investigation aligns with broader efforts to enhance sustainability in aquaculture while supporting agricultural waste valorization.
Broader Implications for Aquaculture and Agriculture
Rice DDGS has already demonstrated its value as a cost-efficient feed ingredient in poultry and swine industries. Its development reflects advancements in agricultural biotechnology and the principles of a circular economy. By transforming what was once considered waste into a resource, rice DDGS not only minimizes environmental impact but also generates economic opportunities.
For aquaculture, incorporating rice DDGS into feed formulations could address the growing demand for sustainable and affordable protein sources. Recommended inclusion levels in feed range between 10-20%, depending on species-specific nutritional requirements. However, precise formulation and expert guidance remain essential to achieve optimal results.
The Potential for Shrimp Nutrition
Pacific white shrimp is a key species in aquaculture due to its high market demand. As feed costs account for a substantial portion of production expenses, identifying affordable alternatives like rice DDGS could significantly impact the sector. This collaboration aims to determine the nutritional efficiency of rice DDGS in shrimp diets, potentially enhancing growth performance and reducing overall feed costs.
Also read: ICAR-NAARM Opens Applications for ABI Incubation 3.0 to Boost Agro and Allied Startup
The event was organized by the Institute Technology Management Unit (ITMU) ICAR-CIBA, and SIC, ITMU. Representatives from both organizations emphasized the importance of sustainable and diversified resources in aquaculture. Dr. Kuldeep Kumar Lal, Director of ICAR-CIBA, emphasized the need for alternative protein sources to ensure sustainability and cost-effectiveness in aquaculture. S.N. Yadav of BRC Marine Products, Odisha, discussed the company’s work in marine product processing, aquaculture, and bio-ethanol production, highlighting the potential of rice DDGS as a sustainable alternative to soybean meal in aqua feeds, offering promising prospects for the Indian aqua feed sector.
Future Outlook
This collaborative research project by ICAR-CIBA not only signifies progress in aquaculture nutrition but also underscores the value of partnerships between research institutions and the private sector. As global demand for efficient and environmentally friendly feed solutions grows, the successful integration of rice DDGS into aquaculture diets could serve as a model for other industries.
The outcomes of this study could pave the way for broader applications of rice DDGS, further solidifying its role in sustainable agricultural and aquacultural practices.
