Solanum tuberosum

Potato, Irish potato

Useful reference: 511

Herbaceous plant with underground tubers and a weak, pubescent or glabrate stem that can be 1 m high. Originated in the Andes, but is now cultivated all over the world except in the humid tropics.

Surplus and cull potatoes, either raw or after cooking (the water should be discarded), are suitable for most classes of livestock. Raw potatoes are not very palatable and have a laxative effect. They should therefore be introduced gradually. To get the most value from the starch, the potatoes should be boiled or steamed. Potatoes may get stuck in the gullet, but this risk can be minimized if the potatoes are fed from low troughs or mashed. Potato sprouts contain an alkaloid, solanine, so it is advisable to remove the sprouts before the potatoes are fed to pigs or poultry. Frozen or dirty potatoes should never be used as feed. Dairy cows can receive up to 15 kg of raw potato a day and beef animals up to 20 kg a day. Pigs are usually given only cooked potatoes, which are efficiently used by fattening and breeding animals, they can be fed up to 6 kg a day. Potatoes produce a firm pork. Cooked potatoes can be used for poultry, to which they have been fed successfully in proportions of up to 40% of the total ration. Potato tubers can be chopped with forage and ensiled. The heat generated during the fermentation is sufficient to cook the potatoes.

The haulm can be ensiled for feeding to cattle. If cattle are given no more than 20 kg a day, it is a good feed that will in no way impair health.

     As % of dry matter
 
    DMCPCFAshEENFECaPRef
 
Leaf meal, India91.217.539.110.86.426.21.390.1496
 
Haulm  23.010.927.013.54.344.3  512
 
Silage of haulm25.012.817.622.410.836.4  "
 
Fresh tubers,
Israel  20.410.32.05.40.581.80.100.25365
 
Fresh tubers,
Chile  24.112.13.95.00.978.10.100.20315
 
Fresh peelings 21.29.93.36.10.580.2  512
 
 
       Digestibility (%)
 
     AnimalCPCFEENFEMERef
 
Haulm   Sheep44.035.520.059.81.58512
 
Silage of haulm Sheep37.538.644.454.91.55"
 
Fresh tubers  Sheep51.050.050.090.02.95365
 
Peelings   Pigs 76.271.40.096.43.61512
 
  Amino acid composition as % of crude protein
 
LPC          Ref226
 
ArgCysGlyHisIlsLeuLysMetPheThrTryTyrVal
-1.64.92.46.811.18.3-6.2-1.86.18.0
 
Tuber         Ref271
 
ArgCysGlyHisIlsLeuLysMetPheThrTryTyrVal
5.0-3.41.84.06.05.6-4.43.72.04.05.2
 
 
 
 
 

References

96, 226, 271, 315, 365, 511, 512

Abstracts

Buffaloes(605), Fermentation(482)