Q.34
Purpose of adding magnesium oxide in the preparation of UMMB block is
- Urea Molasses Mineral Block (UMMB) Formulation:
- UMMB blocks provide a slow-release source of non-protein nitrogen (urea), fermentable energy (molasses), and essential minerals for ruminants.
- Function of Gelling / Hardening Agents:
- Magnesium Oxide ($MgO$) and Calcium Oxide ($CaO$ / quicklime) react chemically with water and organic acids present in molasses to form insoluble hydroxides that undergo hydration hardening.
- This cements the block, achieving the necessary structural hardness so that animals can only consume it by licking, preventing bite consumption that would cause fatal urea toxicity.
- nalysis:
- (to increase hardness): Correct primary mechanical role.
Correct option: (4) to increase hardness
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