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Rapeseed forage

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 

Rapeseed forage, rape forage, rapeseed straw, rape straw, rapeseed silage, rape silage, canola forage, canola straw, canola silage

Description 

Morphology

The oilseed rape is an annual plant that can reach 1.5 m in height. Oilseed rape has variable habit. It is taprooted. Oilseed rape stems are erect, branched above. The basal and lower leaves are petiolated, very variable in shape, 5-40 cm long x 2-10 cm broad. The upper leaves are sessile, lanceolate, ovate or oblong, 8cm long x 3.5 cm broad. The inflorescences are elongated racemes, up to 1 m long. The flowers are typically cruciferous with 4 orthogonal petals, bright yellow in colour. The flowers are fragrant and provide valuable nectar for bees. Flowers can be either pollinated by bees or by self-pollination. The fruits are siliques, up to 11 cm long and 4 mm in diameter. Siliques may contain up to 120 hard, round, dark brown to blackish seeds. The seeds contain up to 40% oil (e-Floras, 2014). 

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 11.5 2.3 8.2 15.2 13  
Crude protein % DM 24.2 2.4 18.7 27.6 17  
Crude fibre % DM 15.0 3.5 9.8 23.8 13  
NDF % DM 21.9 5.7 15.6 26.8 3  
ADF % DM 19.5 4.2 15.4 25.2 4  
Ether extract % DM 1.8       1  
Ash % DM 15.9 3.2 9.4 22.9 14  
Water-soluble carbohydrates % DM 11.3 7.7 3.3 19.0 4  
Gross energy MJ/kg DM 17.0         *
               
Minerals Unit Avg SD Min Max Nb  
Manganese mg/kg DM 35 4 32 39 3  
Zinc mg/kg DM 38 1 37 39 3  
Copper mg/kg DM 4 0 4 5 3  
Iron mg/kg DM 50 3 48 53 3  
               
Ruminant nutritive values Unit Avg SD Min Max Nb  
OM digestibility, Ruminant % 82.2 5.3 72.5 89.9 13  
Energy digestibility, ruminants % 79.6         *
DE ruminants MJ/kg DM 13.6         *
ME ruminants MJ/kg DM 10.7         *
Nitrogen digestibility, ruminants % 88.5       1  
a (N) % 39.0   34.0 44.0 2  
b (N) % 58.0   53.0 63.0 2  
c (N) h-1 0.160   0.060 0.260 2  
Nitrogen degradability (effective, k=4%) % 85         *
Nitrogen degradability (effective, k=6%) % 81   71 85 2 *

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

References

Alibes et al., 1990; Emile et al., 1993; Fulkerson et al., 2008; Kaur et al., 2010; Kunelius et al., 1990

Last updated on 02/05/2013 17:25:34

Main analysis Unit Avg SD Min Max Nb
Dry matter % as fed 16.9 1.9 14.3 19.6 6
Crude protein % DM 18.5 1.3 16.6 20.4 6
Crude fibre % DM 16.4 5.4 12.4 25.7 6
Ash % DM 19.9 4.6 13.8 25.6 6
 
Ruminant nutritive values Unit Avg SD Min Max Nb
OM digestibility, Ruminant % 81.4 7.0 68.8 87.5 6
Energy digestibility, ruminants % 78.8 *

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

References

Emile et al., 1993

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

Main analysis Unit Avg SD Min Max Nb
Dry matter % as fed 86.8 2.3 84.3 91.2 6
Crude protein % DM 15.9 3.3 11.0 19.6 6
Crude fibre % DM 19.0 10.3 12.1 38.8 6
Ether extract % DM 2.7 2.0 3.3 2
Ash % DM 15.8 4.8 9.5 20.6 6
Gross energy MJ/kg DM 16.9 *
 
Minerals Unit Avg SD Min Max Nb
Calcium g/kg DM 27.5 12.4 14.7 42.7 5
Phosphorus g/kg DM 3.6 0.4 3.1 4.1 5
 
Ruminant nutritive values Unit Avg SD Min Max Nb
OM digestibility, Ruminant % 67.7 *
Energy digestibility, ruminants % 65.1 *
DE ruminants MJ/kg DM 11.0 *
ME ruminants MJ/kg DM 8.8 *

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

References

AFZ, 2011

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

Main analysis Unit Avg SD Min Max Nb
Dry matter % as fed 91.1 1
Crude protein % DM 5.8 1.4 4.2 6.9 3
Crude fibre % DM 48.2 3.7 44.1 51.3 3
NDF % DM 77.0 1
ADF % DM 62.3 1
Lignin % DM 10.8 1
Ether extract % DM 1.9 1
Ether extract, HCl hydrolysis % DM 1.4 1
Ash % DM 8.7 1.1 7.5 9.7 3
Gross energy MJ/kg DM 18.4 *
 
Minerals Unit Avg SD Min Max Nb
Calcium g/kg DM 9.8 9.0 10.7 2
Phosphorus g/kg DM 0.9 0.7 1.0 2
Magnesium g/kg DM 2.6 1
Manganese mg/kg DM 30 1
Zinc mg/kg DM 9 7 11 2
Copper mg/kg DM 3 1
Iron mg/kg DM 61 1
 
Ruminant nutritive values Unit Avg SD Min Max Nb
OM digestibility, Ruminant % 40.1 1
Energy digestibility, ruminants % 36.5 *
DE ruminants MJ/kg DM 6.7 *
ME ruminants MJ/kg DM 5.4 *
 
Pig nutritive values Unit Avg SD Min Max Nb
Energy digestibility, growing pig % 14.4 *
DE growing pig MJ/kg DM 2.6 *

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

References

Abreu et al., 1998; AFZ, 2011; Rasool et al., 1998

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

References
Datasheet citation 

DATASHEET UNDER CONSTRUCTION. DO NOT QUOTE. https://feedipedia.org/node/15683 Last updated on August 31, 2016, 15:15

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