Despite supplementation for production, what must remain the base of the yak diet due to ruminant structure?
Answer
Hay and grazing providing the necessary long-stem fiber
The physiological structure of the yak as a ruminant dictates that roughage, specifically long-stem fiber provided by hay or grazing, must form the foundational element of the diet, regardless of production goals. This fiber is indispensable not only for overall nutrition but crucially for proper rumen function. The physical act of chewing the long stems stimulates cud-chewing activity, which is essential for the rumination cycle. Without sufficient long-stem fiber, the environment necessary for the fiber-digesting microbes is compromised, even if energy and protein needs are met via concentrates.
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