38 AQUACULTURE
How to tackle the most common aquaculture challenges
T
he unpredictable nature of the current environment — including the increasing prices of raw materials for aquaculture, the reduced availability of animal-based proteins, using fish meal for fish feed, disease risks and health pandemics — is an ongoing concern, and the industry will be impacted by all of these issues for years to come. It is time for us all, as an industry, to adopt new strategies and learn to co-exist with new norms. This will, no doubt, be a test for each stage of the food chain, but there are some long-term approaches that the industry can take to help increase our profitability and sustainability. The ultimate objective for producers Without a doubt, the most important
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goals for producers in the aquaculture industry are to: • Produce healthy fish in the most sustainable manner. • Reduce the use of marine ingredients. • Aim for increased growth. • Reduce operational costs. Attempting to improve weight gain and lower the feed conversion ratio (FCR) puts increased pressure on the digestive tract to function with the highest efficiency. Considering this, maintaining the health and welfare of fish and shrimp will still be critical for efficient production. Stress from the rigors of production, disease resistance, age and feed, combined with external factors — such as temperature, salinity and pH — can cause imbalances in the gut,
potentially leading to disease. Diets in the aquaculture industry have changed significantly over the last number of years and will continue to be modified and improved. From a sustainability perspective, there is an ever-growing need to reduce fish meal and fish oil in aquaculture feeds. Feed ultimately provides energy and nutrients to support the development of the species. Providing the correct balance of feed is crucial for protecting against foreign pathogens and is critical for the system to function optimally. Formulations must be highly digestible, and each ingredient must add value to and enrich the diet to impact performance. As feed ingredients are derived from several different sources, significant planning, research and development can lead to more sustainable, economical and
JULY-SEPTEMBER 2020
