Rancidity
The high oil content of copra meal renders it susceptible to rancidity and the product should not be used after prolonged storage. Rancidity makes copra meal unpalatable and animals can start rejecting it even when there are no obvious signs of the rancidity (Ehrlich et al., 1990). Rancidity may also cause diarrhoea (Göhl, 1982).
The wet by-product from the oil extraction of fresh coconut flesh is highly perishable. It quickly becomes rancid and develops a foul smell. It must be used as soon as possible after processing, or dried in the sun or by other cheap means. Insufficient drying results in an unpleasant flavour and odour that affect intake and may cause total rejection of the diet (Aregheore, 2005).
Aflatoxins
During the sun-drying process, split coconuts are susceptible to mold and subsequent aflatoxin contamination. It mostly occurs when drying time is too short (2-3 days vs 5-7 days) or when the weather is wet (FAO/IAEA, 2001). In order to prevent mold growth, it is recommended to withdraw the coconuts that have been damaged during dehusking, and to avoid contact between split coconuts and the soil, as the latter is a source of contamination. Copra meal should not contain more than 12% moisture and should be kept in a well-ventilated store (FAO/IAEA, 2001).