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Yellow yam (Dioscorea cayenensis)

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).

Common names 
Igname jaune, igname de Cayenne, attoto yam, lagos yam, twelve months yam, yellow Guinea yam, yellow yam, gelbe yamswurzel, cará do Pará
Related feed(s) 
Feed categories 
  • Roots, tubers and by-products
  • Plant products and by-products
Species 

Dioscorea cayenensis Lam. [Dioscoreaceae]

Synonyms 
Dioscorea occidentalis R. Knuth
Description 
A yam with angular glabrous stem, usually prickly toward the base, and leaves that are deeply cordate at the base and 8-13 cm long. The flesh of the tubers is yellow. The tubers take about a year to mature. The yellow yam does not store well.
Pigs 
Peelings can be used as pig feed.
Tables of chemical composition and nutritional value 
  • Yellow yam (Dioscorea cayenensis), peelings, fresh
  • Yellow yam (Dioscorea cayenensis), tuber, fresh
  • Yellow yam (Dioscorea cayenensis), tuber, peeled, fresh

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).

Yellow yam (Dioscorea cayenensis), peelings, fresh

Main analysis Unit Avg SD Min Max Nb
Dry matter % as fed 21.7 1
Crude protein % DM 7.4 1
Crude fibre % DM 7.6 1
Ether extract % DM 0.7 1
Ash % DM 7.5 1
Gross energy MJ/kg DM 16.8 *
 
Pig nutritive values Unit Avg SD Min Max Nb
Energy digestibility, growing pig % 78.2 *
DE growing pig MJ/kg DM 13.2 *

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

References

Oyenuga, 1968

Last updated on 24/10/2012 00:45:25

Yellow yam (Dioscorea cayenensis), tuber, fresh

Main analysis Unit Avg SD Min Max Nb
Dry matter % as fed 16.6 1
Crude protein % DM 6.2 1
Crude fibre % DM 2.4 1
Ether extract % DM 0.4 1
Ash % DM 3.2 1
Gross energy MJ/kg DM 17.3 *
 
Pig nutritive values Unit Avg SD Min Max Nb
Energy digestibility, growing pig % 86.3 *
DE growing pig MJ/kg DM 14.9 *

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

References

Oyenuga, 1968

Last updated on 24/10/2012 00:45:25

Yellow yam (Dioscorea cayenensis), tuber, peeled, fresh

Main analysis Unit Avg SD Min Max Nb
Dry matter % as fed 16.1 1
Crude protein % DM 5.4 1
Crude fibre % DM 0.8 1
Ether extract % DM 0.2 1
Ash % DM 3.0 1
Gross energy MJ/kg DM 17.2 *
 
Pig nutritive values Unit Avg SD Min Max Nb
Energy digestibility, growing pig % 88.8 *
DE growing pig MJ/kg DM 15.3 *

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

References

Oyenuga, 1968

Last updated on 24/10/2012 00:45:25

References 
Oyenuga, V. A. ; Fetuga, B. L., 1975. Chemical composition, digestibility and energy values of some varieties of yam, cassava, sweet potatoes and cocoyams for pigs. Nigerian J. Sci., 9 (1): 63-110
Oyenuga, V. A., 1968. Nigeria's foods and foodstuffs. Ibadan, University Press
2 references found
Datasheet citation 

DATASHEET UNDER CONSTRUCTION. DO NOT QUOTE. https://www.feedipedia.org/node/541 Last updated on March 16, 2010, 17:13

Image credits 

Source URL: https://www.feedipedia.org/node/541