Chinese Journal of Animal Nutrition >
Research Progress on Dietary Neutral Detergent Fiber to Starch Ratio Regulation on Gastrointestinal Microecology, Nutrient Digestion and Performance of Ruminants
Received date: 2025-10-29
Online published: 2026-04-14
The ratio of dietary neutral detergent fiber (NDF) to starch is an important factor in the nutritional regulation of ruminants, directly affecting the rumen microbiota structure, fermentation environment and the digestion and utilization of nutrients. An appropriate ratio of NDF to starch in the diet can maintain the rumen microbiota diversity and fermentation homeostasis, promote the effective utilization of dry matter, protein and fiber, and maintain the barrier function of the gastrointestinal tract, thereby improving the performance of ruminants. Although high-starch diets can enhance energy supply in the short term, they are prone to cause a decrease in rumen pH, microecological imbalance and inflammatory responses, reducing the efficiency of fiber degradation and nitrogen utilization. Therefore, a reasonable balance of the ratio of NDF to starch in the diet is the key to ensuring the nutritional utilization and healthy production of ruminants.
Key words: neutral detergent fiber; starch; ruminants; rumen microbiota; performance
BAI Weiwei , QU Mingren , LI Yanjiao . Research Progress on Dietary Neutral Detergent Fiber to Starch Ratio Regulation on Gastrointestinal Microecology, Nutrient Digestion and Performance of Ruminants[J]. Chinese Journal of Animal Nutrition, 2026 , 38(4) : 2489 -2500 . DOI: 10.12418/CJAN2026.200
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