Precision fermentation and cultured proteins: redefining protein production and nutritional strategies in modern pet food systems-mini review

The pet food sector is experiencing a profound scientific transition driven by increasing demand for nutritionally precise, environmentally sustainable, and ethically responsible protein sources. Traditional reliance on livestock-derived ingredients has raised concerns regarding resource inefficiency, environmental impact, raw material variability, and long-term sustainability. In response, advances in biotechnology, particularly precision fermentation and cultured protein technologies—have emerged as promising alternatives capable of transforming protein production for companion animal nutrition. Precision fermentation enables the microbial synthesis of animal-identical or functionally enhanced proteins with high consistency and safety, while cultured proteins are generated through the controlled growth of animal cells without conventional animal agriculture. This review critically examines the scientific foundations, nutritional quality, functional performance, sustainability implications, safety considerations, and regulatory challenges associated with these technologies. Current evidence suggests that both precision-fermented and cultured proteins can provide digestible, bioavailable, and nutritionally adequate protein sources for pet foods. However, knowledge gaps remain regarding long-term health outcomes, micronutrient optimization, and large-scale economic feasibility. Collectively, these emerging technologies represent a paradigm shift toward nutrition-by-design and offer a compelling pathway for the future of sustainable pet food systems.

1. Kerr, K.R., Beloshapka, A.N., Morris, C.L., Parsons, C.M., & Swanson, K.S. Evaluation of novel protein sources for companion animal diets: digestibility and physiological responses. Journal of Animal Science. 2024;102(5): skad 412.

2. Miller, M.J., Linde, C.R., & Long, D.M. Digestibility and fecal characteristics of microbial-derived proteins in canine diets. Animal Feed Science and Technology. 2025; 312: 115432.

3. Erickson, G.M., et al. Safety and compositional consistency of precision-fermented proteins for animal nutrition applications. Frontiers in Nutrition. 2024; 11: 1298745.

4. Kumar, R., Goswami, M., Pathak, V., Bharti, S.K., Verma, A.K., Rajkumar, V. and Patel, P. 2023. Utilization of poultry slaughter byproducts to develop cost effective dried pet food. Anim. Nutr. Technol., 23: 165-174. DOI: 10.5958/0974-181X.2023. 00015.X

5. Kumar, R., Goswami, M., Pathak, V., Verma, A.K. and Rajkumar, V. 2023. Quality improvement of poultry slaughterhouse byproducts-based pet food with incorporation of fiber-rich vegetable powder. Explor. Anim. Med. Res., 13(1): 54-61. DOI: 10.52635/eamr/13.1.54-61

6. Kumar, R., Thakur, A., & Sharma, A. (2023). Comparative prevalence assessment of subclinical mastitis in two crossbred dairy cow herds using the California mastitis test. J Dairy Vet Anim Res, 12(2), 98-102 http://dx.doi.org/10.15406/jdvar.2023.12.00331

7. Post, M.J., et al. Cultured meat composition and nutritional equivalence compared with conventional muscle tissue. Meat Science. 2023;201:109202.

8. Kumar R, Goswami M, Pathak V. Innovations in pet nutrition: investigating diverse formulations and varieties of pet food: mini review. MOJ Food Process Technols. 2024;12(1):86‒89. DOI: 10.15406/mojfpt.2024.12.00302

9. Kumar R, Goswami M. Harnessing poultry slaughter waste for sustainable pet nutrition: a catalyst for growth in the pet food industry. J Dairy Vet Anim Res. 2024;13(1):31‒33. DOI: 10.15406/jdvar.2024.13.00344

10. Kumar, R. (2024). Promoting Pet Food Sustainability: Integrating Slaughterhouse By-products and Fibrous Vegetables Waste. Acta Scientific Veterinary Sciences, 6, 07-11. http://dx.doi.org/10.31080/ASVS.2024. 06.0871

11. Smetana, S., et al. Environmental sustainability assessment of alternative protein sources for food and feed: determining trade-offs of precision fermentation and cellular agriculture. Trends in Food Science & Technology. 2024;142:104265.

12. Swanson, K.S., et al. Safety assessment of novel protein ingredients in pet foods: current status and future research needs. Journal of Animal Physiology and Animal Nutrition. 2025;109(1):45–58.

13. Kumar, R., & Sharma, A. (2024). Deciphering new nutritional substrates for precision pet food formulation. International Journal of Veterinary Sciences and Animal Husbandry.https://doi. org/10.22271/veterinar y, 202(4), v9.

14. Kumar, R., & Sharma, A. (2024). Prebioticdriven Gut Microbiota Dynamics: Enhancing Canine Health via Pet Food Formulation. International Journal of Bioresource and Stress Management, 15(Jun, 6), 01-15. https://doi.org/10.23910/1.2024.5359

15. Kumar, R., & Sharma, A. (2024). Review of Pet Food Packaging in the US Market: Future Direction Towards Innovation and Sustainability. Annual Research & Review in Biology, 39(6), 16-30. https://doi.org/10.973/arrb/2024/v39i62085

16. Kumar, R., Goswami, M. and Pathak, V. (2023). Enhancing Microbiota Analysis, Shelf-life, and Palatability Profile in Affordable Poultry Byproduct Pet Food Enriched with Diverse Fibers and Binders. J. Anim. Res., 13(05): 815- 831. DOI: 10.30954/2277-940X.05.2023.24

17. Kumar, R., Goswami, M., & Pathak, V. (2024). Gas Chromatography Based Analysis of fatty acid profiles in poultry byproduct-based pet foods: Implications for Nutritional Quality and Health Optimization. Asian Journal of Research in Biochemistry, 14(4), 1-17. https://doi.org/ 10.9734/ajrb/2024/v14i4289

18. Stull, C.L., et al. Impact of precision-fermented proteins on nutrient digestibility and gut microbiota in dogs. Frontiers in Veterinary Science. 2026;13:958312.

19. Datar, I., & Betti, M. Possibilities for an in-vitro meat production system. Meat Science. 2010;86(1):1–22.

20. Tuomisto, H.L., & Teixeira de Mattos, M.J. Environmental impacts of cultured meat: assessing ecological footprint and long-term implications. Environmental Science & Technology. 2011;45(14):6117–6123.

21. Kumar, R., & Goswami, M. (2024). Exploring Palatability in Pet Food: Assessment Methods and Influential Factors. International Journal of Livestock Research, 14(4).

22. Kumar, R., & Goswami, M. (2024). Feathered nutrition: unlocking the potential of poultry byproducts for healthier pet foods. Acta Scientific Veterinary Sciences. (ISSN: 2582-3183), 6(4).

23. Kumar, R., & Goswami, M. (2024). Optimizing Pet Food Formulations with Alternative Ingredients and Byproducts. Acta Scientific Veterinary Sciences (ISSN: 2582-3183), 6(4).

24. Kumar, R., & Sharma, A. (2024). A Comprehensive Analysis and Evaluation of Various Porcine Byproducts in Canine Diet Formulation. Asian Journal of Research in Animal and Veterinary Sciences, 7(3), 236-246. https://doi.org/10.9734/ajravs/2024/v7i3308

25. Stephens, N., et al. Bringing cultured meat to market: technical, socio-political, and regulatory challenges in cellular agriculture. Trends in Food Science & Technology. 2018;78:155–166.

26. Post, M.J., & Hocquette, J.F. New technologies for cultured meat production. Annual Review of Food Science and Technology. 2022;13:211–234.

27. Bleakley, S., & Hayes, M. Algae-based proteins: cultivation, extraction and application in human and animal nutrition. Food Chemistry. 2017;253:1–15.

28. Weber, C.J., & Kerr, K.R. Effects of alternative proteins on pet food palatability and long-term feeding preferences. Journal of Animal Nutrition. 2025;4(3):127–138.

29. National Research Council. Nutrient Requirements of Dogs and Cats. Washington, DC: The National Academies Press; 2006.

30. Herzog, H., Zuberbühler, K., Clément, F., & Muggli-Cockett, N. Ethical considerations of cellular agriculture in animal feeding. Journal of Agricultural and Environmental Ethics. 2020;33:1–15.

31. “Pet Food Innovation Report 2025: Protein Sector and Sustainability Trends.” Petfood Industry Insights; 2025. (Industry report supporting market and sustainability data.)

32. van der Weele, C., & Tramper, J. Cultured meat: every village its own factory? Trends in Biotechnology. 2014;32(6):294–296.

33. Verbeke, W., et al. Consumer acceptance of cultured meat: a comparative analysis in pet owners and human food consumers. Appetite. 2020;155:104832.

34. Li, M., et al. Microbiome changes in pets fed precision-fermented protein diets: implications for gut health. mSystems. 2026;11(1):e01578-25.

35. National Academies of Sciences, Engineering, and Medicine. Sustainability of Animal-Derived Foods: The Interplay of Animal Science and Supply Chain Impacts. The National Academies Press; 2025.

36. Kumar, R., Goswami, M., Pathak, V., & Singh, A. (2024). Effect of binder inclusion on poultry slaughterhouse byproducts incorporated pet food characteristics and palatability. Animal Nutrition and Feed Technology, 24(1), 177-191. DOI: 10.5958/0974-181X. 2024.00013.1