How do Zebus extract energy efficiently from tough structural plant components like cellulose and hemicellulose?

Answer

Through the microbial activity present in their rumen.

The capacity of the Zebu to thrive on low-grade, fibrous diets is intrinsically linked to the digestive processes occurring within the rumen. Specialized microbes residing in this large fore-stomach compartment possess the necessary enzymatic machinery to break down complex structural carbohydrates, specifically cellulose and hemicellulose, which other domestic livestock struggle to utilize effectively. This fermentation process yields volatile fatty acids (VFAs), which the Zebu then absorbs and uses as its main source of energy. This microbial breakdown is fundamental to their survival in tropical and subtropical regions where forage quality is frequently poor or dominated by mature, lignified plant matter.

How do Zebus extract energy efficiently from tough structural plant components like cellulose and hemicellulose?
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