Ruminal acidosis

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  • Ruminal Acidosis
    • definition
      • decreased blood ph and bicarb
      • overporduction of ruminal lactate - large amount concentrates consumed
      • high carbs + reduced salivation = decrease rumen ph and acidosis
      • acidosis favours lactic acid producing bacteria
      • Acute
        • large amount carbs short period (grain overload
        • result bacteria death and decrease DMI
        • lactic acid in rumen = dehydration and scour
      • Subacute
        • chronic mild depression of ph - chronic exposure low fibre, high starch lack long chop
        • result in decreased salivation
        • herd level problem
        • large infrequent concentrate meals
        • excessive starch
    • Clinical signs
      • Acute
        • anorexia
        • bloat
        • ataxia
        • weakness
        • diarrhoea
      • Subacute
        • tail swishing
        • variable diarrhoea
        • decreased yield and feed intake
        • poor reproductive performance
    • diagnostics
      • rumenocentesis
      • continuous monitoring ph bolus
      • assess feed quality
    • Treatment
      • Acute
        • rumenotmy
        • IV fluids, calcium and gluconate
        • oral antacids
        • often results in chronic rumenitis
      • Subacute
        • distribute concentrate feeds across the day
        • fibre content more than 35% (long grain)
        • total sugar/ starch less than 25%
        • include buffers in feed (sodium bicarb)
        • goood mixing of rations and managing DMI

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