1.23 Carbohydrate metabolism of ruminants Flashcards
1
Q
Draw degradation of carbohydrates in ruminants
A
2
Q
Draw VFA production
A
3
Q
Give the ways VFAs are absorbed in ruminants
A
- Simple diffusion
- Facilitated diffusion
4
Q
VFA absorption by simple diffusion
- What causes an increase in absorption?
A
pH↓ → Absorption ↑
5
Q
VFA absorption by facilitated diffusion
A
- MCT-1 (Monocarboxylate transporter) (Basolateral side)
- Required ATP
- HCO3-/SCFA antiporter (Apical side)
- Short chain FA
- Anionic
- Electrical gradient
6
Q
Metabolism of VFAs
A
- 70% become acetate
- 20% become propionate
- 10% become butyrate
7
Q
Draw the fate of acetate
A
8
Q
Give the fate of propionate
A
Activated → Propionyl-CoA
9
Q
Give the fate of butyrate
A
Activated → Butyryl-CoA = 2 AcCoA
