For many years, feed formulation focused mainly on achieving adequate protein levels at the best possible cost. Today, however, the conversation around protein in animal nutrition has expanded far beyond crude protein percentages alone.
Concepts such as functionality, sustainability, digestibility, and alternative sourcing are reshaping how the industry approaches protein ingredients and formulation strategies.
From hydrolyzed proteins to insect-derived ingredients, algae, microalgae, and precision fermentation, a new generation of protein solutions is beginning to influence the future of animal nutrition.
Hydrolyzed Proteins: Beyond Basic Nutrition
One of the earliest shifts in this evolution came with the development of hydrolyzed proteins.
Through enzymatic processes, proteins can be broken down into smaller peptides that may provide additional functional properties within animal nutrition. Research on hydrolyzed chicken protein, for example, has identified bioactive peptides associated with antioxidant, digestive, and immune-related functions.
These developments have also contributed to a broader focus on digestibility and physiological functionality, in addition to traditional protein content.
Insect Meal and Alternative Protein Sources
Among the new protein sources gaining attention across the industry are insect-derived ingredients.
Proteins produced from species such as black soldier fly (Hermetia illucens) and mealworm (Tenebrio molitor) have attracted growing interest due to their nutritional profile and potential role within more sustainable production systems.
In addition to providing protein and fat, these ingredients can be produced using organic byproducts, strengthening their connection to circular economy models and food waste reduction strategies.
This category is also gaining visibility in commercial applications, particularly within the pet food sector, where several companies have introduced formulations using insect-based proteins in premium and novel-protein diets.
Algae and Microalgae in Animal Nutrition
Algae and microalgae are also becoming increasingly relevant in animal nutrition because of their combination of nutritional value and functional potential.
Certain species contain significant levels of protein, essential amino acids, omega-3 fatty acids, vitamins, and bioactive compounds that continue to be studied for their possible role in gut health, immune response, and production sustainability.
In ruminants, some studies have also evaluated the potential of certain algae to help reduce enteric methane emissions, opening new discussions around environmental sustainability in livestock production.
Within pet food, microalgae-derived ingredients are already being used as sources of DHA and other functional nutrients in specialized formulations.
Precision Fermentation and Emerging Technologies
More recently, technologies such as precision fermentation and cellular agriculture have entered the broader conversation around future protein production.
These approaches aim to produce specific compounds using microorganisms or controlled biotechnological systems, with the goal of creating more consistent ingredients while reducing dependence on some traditional protein sources.
Although many of these technologies are still developing, industry analyses suggest they may play an important role in the evolution of animal and food production systems over the coming years.
An Industry in Transition
Rather than completely replacing conventional ingredients, many of these alternatives are expanding the range of formulation possibilities available to the industry.
Factors such as sustainability, functionality, raw material availability, and production efficiency continue to drive interest in new protein solutions.
In this context, the conversation is no longer focused only on how much protein an ingredient provides, but also on how it is produced, the functionalities it may offer, and the role it can play within increasingly complex production systems.
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