1. ROOTS and TUBERS Dr. István HULLÁR associate professor (2010.) ROOTS - Beets; TUBERS - Potatoes.

2. Fodder Beet (Beta vulgaris var. Crassa)

3. Sugar Beet (Beta vulgaris var. Saccharifera)

4. Turnips (Brassica rapa var. rapifera)

5. Carrots (Daucus carotta)

6. Potatoes (Solanum tuberosum)

7. Jerusalem Artichoke (Helianthus tuberosus)

8. Caracterisation of Roots and Tubers  High water content (75-95%);  low nutrient densitydifficult to storage  Rich in carbohudrates (sugar or starch), 50- 70% on DM basis;  Moderately low CP content (8.5-11% on DM basis);  Moderately low CF content (3-10% on DM basis);  For ruminants: too much readily available carbohydrates (rumen acidosis);  CP and CF supplementaions are required.

9. Root Crops  Rich in sugars (sucrose, glucose, fructose);  Leaves: soiled  danger of diarrhoea;  For breeding swines;  Not for fattening pigs: bulky;  For ruminants: less than 15 kg/day (rumen acidosis + betain  fishy taste of the milk).

10. Potatoes  For feeding: surplus of white potatoes;  For swines and ruminants;  For swines: cooking or steaming - improves the starch digestibility, - neutralises the solanin (antinutritive);  For ruminants: cut in slices, - Cattle: 10-15 kg/day, - Sheep: 2 kg/day.

11. Nutrient Content of Roots and Tubers NutrientsFodder beetPotato DM, g/kg111236 CP, g/kg DM107 85 CF, g/kg DM 79 31 NFE, g/kg DM709832 NE l, MJ/kg DM 8 8.5