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Castor (Ricinus communis) seeds, oil meal and by-products

IMPORTANT INFORMATION: This datasheet is pending revision and updating; its contents are currently derived from FAO's Animal Feed Resources Information System (1991-2002) and from Bo Göhl's Tropical Feeds (1976-1982).

Datasheet

Description
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Common names 
Ricin, castor bean, castorbean, castor oil plant
Related feed(s) 
Description 
Three seeds (also incorrectly called "beans") are encased in a spiny outer hull (or shell). After the seeds have been freed from the hulls by drying or with dehulling machinery, the oil is extracted from them. Castor-oil meal is often called castor pomace. The extracted meal contains about 1% residual oil. Screw-pressed cake has about 6-8% residual oil and double-pressed cake 5-7%.
Nutritional aspects
Potential constraints 
Castor seeds and hulls contain toxic components. The principal toxic component is ricin, a protein, but a powerful allergen that is more difficult to inactivate than ricin is also present. The allergen may cause hypersensitivity in humans who have contact with the products, but it seems to cause little harm to animals. The ricin can be destroyed by autoclaving the meal for fifteen minutes at 125 C. If no autoclave is available, the meal is boiled in three times the volume of water for ten minutes, after which the water is discarded and the treatment repeated. The cake is then dried in the open air at 70 -80 C.
Nutritional tables
Tables of chemical composition and nutritional value 

Avg: average or predicted value; SD: standard deviation; Min: minimum value; Max: maximum value; Nb: number of values (samples) used

IMPORTANT INFORMATION: This datasheet is pending revision and updating; its contents are currently derived from FAO's Animal Feed Resources Information System (1991-2002) and from Bo Göhl's Tropical Feeds (1976-1982).

Main analysis Unit Avg SD Min Max Nb
Dry matter % as fed 91.9 1
Crude protein % DM 28.8 1
Crude fibre % DM 31.3 1
Ether extract % DM 2.2 1
Ash % DM 7.0 1
Gross energy MJ/kg DM 19.5 *
 
Minerals Unit Avg SD Min Max Nb
Calcium g/kg DM 5.4 1
Phosphorus g/kg DM 6.5 1

The asterisk * indicates that the average value was obtained by an equation.

References

Bris et al., 1970

Last updated on 24/10/2012 00:43:56

Main analysis Unit Avg SD Min Max Nb
Dry matter % as fed 92.0 1
Crude protein % DM 38.5 1
Crude fibre % DM 32.3 1
Ether extract % DM 1.0 1
Ash % DM 6.9 6.6 7.1 2
Gross energy MJ/kg DM 19.9 *
 
Minerals Unit Avg SD Min Max Nb
Calcium g/kg DM 8.5 7.6 9.4 2
Phosphorus g/kg DM 9.4 8.7 10.0 2
Magnesium g/kg DM 4.3 1
Zinc mg/kg DM 205 1
Copper mg/kg DM 35 1
Iron mg/kg DM 49 1
 
Amino acids Unit Avg SD Min Max Nb
Arginine % protein 10.0 1
Histidine % protein 1.7 1
Isoleucine % protein 5.3 1
Leucine % protein 6.4 1
Lysine % protein 3.0 1
Methionine % protein 1.5 1
Phenylalanine % protein 4.7 1
Threonine % protein 3.2 1
Tryptophan % protein 1.1 1
Tyrosine % protein 2.9 1
Valine % protein 5.4 1
 
Ruminant nutritive values Unit Avg SD Min Max Nb
ME ruminants (FAO, 1982) MJ/kg DM 7.7 1
Nitrogen digestibility, ruminants % 80.8 1
 
Pig nutritive values Unit Avg SD Min Max Nb
Energy digestibility, growing pig % 39.4 *
DE growing pig MJ/kg DM 7.8 *
MEn growing pig MJ/kg DM 6.7 *
NE growing pig MJ/kg DM 2.7 *

The asterisk * indicates that the average value was obtained by an equation.

References

Bris et al., 1970; Gowda et al., 2004; Lyman et al., 1958; Woodman, 1945

Last updated on 24/10/2012 00:43:56

References
References 
Datasheet citation 

DATASHEET UNDER CONSTRUCTION. DO NOT QUOTE. http://www.feedipedia.org/node/28 Last updated on March 16, 2010, 17:13

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