Acta Veterinaria et Zootechnica Sinica ›› 2026, Vol. 57 ›› Issue (1): 68-79.doi: 10.11843/j.issn.0366-6964.2026.01.007

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Establishment and Application of Simulated Digestion Technique to Evaluate the Nutritional Values of Feedstuffs for Pig and Poultry

XIE Jingjing(), WANG Yuming, ZHAO Feng()   

  1. State Key Laboratory of Animal Nutrition and Feeding,Institute of Animal Science,Chinese Academy of Agricultural Sciences,Beijing 100193,China
  • Received:2025-01-20 Online:2026-01-23 Published:2026-01-26
  • Contact: ZHAO Feng E-mail:jiejingjing@caas.cn;zhaofeng@caas.cn

Abstract:

Feed accounts for 60% to 70% of costs in pig and poultry production. The technology of diversified diets with low protein and low soybean meal is critical to reduce feed costs and relieve the pressure on the supply of feed grains such as corn and soybean meal. Accurate nutritional values are the keystone to determine the substitutability of various feed ingredients and to formulate diversified diets with low protein and low soybean meal. To obtain accurate nutritional values for feedstuffs in practice, it is critical to establish dynamic nutritional value database for feed ingredients by developing precise and rapid evaluation technologies. Thereby, this article systemically discusses the importance and broad application of simulated digestion technique in nutritional evaluation for feedstuffs from three aspects: the principles of establishing nutritional values database for feed ingredients, the progress in simulated digestion technique for feedstuff evaluation, and the application of simulated digestion technique in feedstuff database establishment and substitutability determination.

Key words: simulated digestion, feed ingredient, nutritional value, diversified diet

CLC Number: