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Bengal indigo (Indigofera arrecta)

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 

Bengal indigo, Java indigo, Natal indigo, añil de Java

Taxonomic information 

Indigoferra arrecta, Indigoferra suffruticosa and Indigoferra tinctoria are closely related and intermediate specimens (possibly of hybrid origin) have been found (Orwa et al., 2009).

Feed categories 
Related feed(s) 
Description 

The Bengal indigo (Indigofera arrecta Hochst. ex A. Rich.) is a large shrub up to 3 m tall, often cultivated as an annual. Its 2-2.5 cm long straight pods contain 6-8 seeds (Orwa et al., 2009). It is usually grown for cover and green manure, but also used as a browse shrub (Göhl, 1982). It is a also a is a chief source of blue dye (Orwa et al., 2009).

Distribution 

Indigofera arrecta is a native of East and southern Africa and has been introduced in Laos, Vietnam, the Philippines (Luzon) and Indonesia (Sumatra, Java, Sumba, Flores) (Orwa et al., 2009).

When used as a cover crop, it can only be grown in gardens with little or no shade. Plants prefer a hot, moist climate with a rainfall of no less than 1750 mm/year. The crop withstands waterlogging for up to 2 months (Orwa et al., 2009).

Environmental impact 

Indigofera arrecta is a soil improver. It is also used as a cover crop and for green manure (Orwa et al., 2009).

Nutritional aspects
Ruminants 

Not very palatable during the rainy season, but well browsed toward the end of the dry season, when the young subsidiary shoots are also readily eaten.

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 74.7 1
Crude protein % DM 27.4 5.0 23.1 32.8 3
Crude fibre % DM 19.6 13.7 25.5 2
NDF % DM 29.5 1
ADF % DM 19.6 1
Lignin % DM 6.0 1
Ether extract % DM 2.2 1
Ash % DM 9.3 2.7 6.8 12.2 3
Gross energy MJ/kg DM 18.7 *
 
Minerals Unit Avg SD Min Max Nb
Calcium g/kg DM 12.7 11.9 13.6 2
Phosphorus g/kg DM 3.3 3.2 3.5 2
Potassium g/kg DM 16.2 1
Sodium g/kg DM 0.0 1
Magnesium g/kg DM 1.9 1
 
Secondary metabolites Unit Avg SD Min Max Nb
Tannins, condensed (eq. catechin) g/kg DM 3.0 1
 
Ruminant nutritive values Unit Avg SD Min Max Nb
OM digestibility, Ruminant % 75.7 *
Energy digestibility, ruminants % 72.4 *
DE ruminants MJ/kg DM 13.5 *
ME ruminants MJ/kg DM 10.6 *

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

References

Dougall et al., 1966; Kaitho et al., 1997; Pozy et al., 1996

Last updated on 24/10/2012 00:44:22

References
Datasheet citation 

DATASHEET UNDER CONSTRUCTION. DO NOT QUOTE. http://www.feedipedia.org/node/291 Last updated on December 5, 2011, 14:57

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