Fish - Feed intake in fish - Short term control of feed intake

6 important questions on Fish - Feed intake in fish - Short term control of feed intake

How is the maximum amount of feed ingestation at a time in a fish limited in short term?

  • By it's gut volume
  • Gastrointestial emptying rate

How is it implied that there is a flexibility in gut volume in a fish?

Stomach volume increases when the fish is fed a bulky diet and the feed intake often exceeds the normal level of intake after a period of feed deprivation.

What 4 things does gastrointestinal emptying rate depend on?

  • Fish size
  • Meal size
  • Dietary characteristics
  • Environmental factors
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What single nutrient/metabolite based mechanisms controll short term feed intake in the fish?

  • Glucose is the blood
  • Circulating levels of amino acids

Does glucose play a bigrole in the energy provision in fish?

No, circulatory glucose only play a minor role in energy provison and the low turn over in fish confirms this.

How does the circulatng level of amino acid influence the short term feed intake in the fish?

Protein plays an important role in energy provision in fish. The changes in the amount of protein as well as the composition affects the feed intake in fish.

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