Cottonseed hulls

Hulls of cotton seeds (Gossypium spp.), a byproduct of the dehulling step in cotton seed processing.

Values

Main constituents
Parameter As fed On DM Unit Other Unit SD Range Count SD Range Count SD Range Count
Dry matter 90.8 100 % - 4 86.2 -95.7 20 3.6
Crude protein 4.7 5.2 % - 2.1 3 -12 20 2.3 2.3 -13.9 41
Crude fibre 47.8 52.6 % - 9.9 25.9 -69.6 14 10.9 29.2 -72.7 26
Crude fat 2.8 3.1 % - 2 0.8 -7.6 15 2.2 0.6 -8.8 21
Ash 2.8 3.1 % - 1 2.4 -8 13 1.1 2.2 -8.9 34
Insoluble ash 0.2 0.2 % - 0.1 0.07 -0.4 4 0.1 0.07 -0.4 6
NDF 77 84.7 % - 5 69 -84.2 11 5.1 71.6 -91.6 19
ADF 59.3 65.3 % - 6.6 53.9 -68.4 11 7.1 46.4 -73.8 22
Lignin 16.4 18.1 % - 3 10.1 -40 9 3.3 11.5 -23.2 15
Water insoluble cell walls 85 93.5 % -
Starch 3.8 4.2 % - 1 1
Total sugars 0 0 % -
Gross energy (kcal) 4400 4840 kcal/kg -
Gross energy (MJ) 18.4 20.3 MJ/kg -
Mineral elements
Parameter As fed On DM Unit Other Unit SD Range Count SD Range Count SD Range Count
Calcium 1.3 1.4 g/kg - 0.7 0.9 -1.5 8 0.8 0.8 -4 23
Phosphorus 1.2 1.3 g/kg - 1.1 0.4 -1.6 9 1.2 0.5 -5.5 24
Magnesium 1.1 1.3 g/kg - 0.5 0.6 -2 17
Potassium 6.5 7.1 g/kg - 3 4.5 -12.4 15
Sodium 0.18 0.2 g/kg - 0.01 0 0.19 -0.2 10
Chlorine 0.3 0.3 g/kg - 0.05 0.05 0.3 -0.4 10
Sulfur 1.5 1.7 g/kg - 0.7 -2.3 2 0.8 -2.6 3
Dietary cation-anion difference 69 76 mEq/kg -
Electrolyte balance 164 181 mEq/kg -
Manganese 20 22 mg/kg - 4 4 19 -33 10
Zinc 3 4 mg/kg - 5 5 2 -20 11
Copper 62 69 mg/kg - 20 22 7 -95 11
Iron 156 172 mg/kg - 42 46 139 -308 11
Fatty acids
Parameter As fed On DM Unit Other Unit SD Range Count SD Range Count SD Range Count
C12:0 lauric acid 0.1 0.1 g/kg 0.5 % FA
C14:0 myristic acid 0.2 0.2 g/kg 0.8 % FA
C16:0 palmitic acid 6.2 6.8 g/kg 23.2 % FA
C16:1 palmitoleic acid 0.2 0.2 g/kg 0.7 % FA
C18:0 stearic acid 0.6 0.6 g/kg 2.1 % FA
C18:1 oleic acid 4.5 5 g/kg 16.9 % FA
C18:2 linoleic acid 14.9 16.4 g/kg 55.8 % FA
C18:3 linolenic acid 0.05 0.06 g/kg 0.2 % FA
Fatty acids 2.7 2.9 g/kg 95 % fat
Ruminants
Parameter As fed On DM Unit Other Unit SD Range Count SD Range Count SD Range Count
UFL Systali 0.53 0.59 per kg -
UFV Systali 0.42 0.46 per kg -
PDIA Systali 20 22 g/kg -
PDI Systali 59 65 g/kg -
Rumen protein balance Systali -63 -69 g/kg -
Fill Unit ruminants Systali 0.582 0.64 per kg -
ME ruminants Systali (kcal) 1600 1760 kcal/kg -
NE lactation ruminants Systali (kcal) 940 1030 kcal/kg -
NE meat production ruminants Systali (kcal) 740 820 kcal/kg -
ME ruminants Systali (MJ) 6.7 7.4 MJ/kg -
NE lactation ruminants Systali (MJ) 3.9 4.3 MJ/kg -
NE meat production ruminants Systali (MJ) 3.1 3.4 MJ/kg -
OM digestibility ruminants Systali - 45 %
Energy digestibility ruminants Systali - 43.2 %
N degradability ruminants Systali - 22 %
DM degradability ruminants Systali - 23 %
Starch degradability ruminants Systali - 82 %
UFL FL1 Systali 0.56 0.61 per kg -
UFV FL1 Systali 0.45 0.49 per kg -
PDIA FL1 Systali 19 21 g/kg -
PDI FL1 Systali 59 65 g/kg -
Rumen protein balance FL1 Systali -63 -69 g/kg -
UFL FL4 Systali 0.49 0.53 per kg -
UFV FL4 Systali 0.37 0.41 per kg -
PDIA FL4 Systali 22 25 g/kg -
PDI FL4 Systali 61 67 g/kg -
Rumen protein balance FL4 Systali -66 -73 g/kg -
UFL INRA 2007 0.51 0.56 per kg -
UFV INRA 2007 0.4 0.44 per kg -
PDIA INRA 2007 24 26 g/kg -
PDIN INRA 2007 26 29 g/kg -
PDIE INRA 2007 56 61 g/kg -
ME ruminants INRA 2007 (kcal) 1570 1730 kcal/kg -
ME ruminants INRA 2007 (MJ) 6.6 7.2 MJ/kg -
OM digestibility ruminants INRA 2007 - 46.4 % 36.9-50.9 3
Energy digestibility ruminants INRA 2007 - 44.6 % 1
N digestibility ruminants - 22.3 % -30.9-36.4 4
N digestibility, intestinal, ruminants - 55 %
NDF digestibility ruminants - 64 %
N degradability ruminants (k=0.06) - 16 % 13-20 2
Immediately degradable N (a) - 3 % 3-3 2
Potentially degradable N (b) - 41 % 37-44 2
Degradation rate of particles N (c) - 0.03 h-1 0.021-0.038 2
Starch degradability, ruminants (k=0.06) - 80 %
DM degradability ruminants (k=0.06) - 21 % 11-37 4
Immediately degradable DM (a) - 5 % 3-25 4
Potentially degradable DM (b) - 86 % 51-95 4
Degradation rate of particles DM (c) - 0.014 h-1 0.005-0.014 4
Fatty acids digestibility ruminants - 72.1 %
Absorbable Ca ruminants 0.7 0.8 g/kg 55 % Ca
Pigs
Parameter As fed On DM Unit Other Unit SD Range Count SD Range Count SD Range Count
DE growing pig (kcal) 390 430 kcal/kg -
ME growing pig (kcal) 340 370 kcal/kg -
NE growing pig (kcal) 80 90 kcal/kg -
DE adult pig (kcal) 1020 1120 kcal/kg -
ME adult pig (kcal) 890 980 kcal/kg -
NE adult pig (kcal) 370 400 kcal/kg -
DE growing pig (MJ) 1.7 1.8 MJ/kg -
ME growing pig (MJ) 1.4 1.5 MJ/kg -
NE growing pig (MJ) 0.3 0.4 MJ/kg -
DE adult pig (MJ) 4.3 4.7 MJ/kg -
ME adult pig (MJ) 3.7 4.1 MJ/kg -
NE adult pig (MJ) 1.5 1.7 MJ/kg -
Energy digestibility growing pig - 9 %
Energy digestibility adult pig - 23.1 %
OM digestibility growing pig - 15.6 %
OM digestibility adult pig - 30 %
N digestibility growing pig - 9.1 %
N digestibility adult pig - 88.3 %
Crude fat digestibility pig - 4.5 %
Poultry
Parameter As fed On DM Unit Other Unit SD Range Count SD Range Count SD Range Count
AMEn cockerel (kcal) 590 650 kcal/kg -
AMEn cockerel (MJ) 2.5 2.7 MJ/kg -
Horses
Parameter As fed On DM Unit Other Unit SD Range Count SD Range Count SD Range Count
OM digestibility horse - 44 %
Energy digestibility horse - 42.5 %
Horse Forage Unit 0.31 0.34 per kg -
Digestible crude protein horse 0 0 g/kg -
Rabbits
Parameter As fed On DM Unit Other Unit SD Range Count SD Range Count SD Range Count
DE rabbit (kcal) 810 900 kcal/kg -
ME rabbit (kcal) 780 860 kcal/kg -
DE rabbit (MJ) 3.4 3.8 MJ/kg -
ME rabbit (MJ) 3.3 3.6 MJ/kg -
Energy digestibility rabbit - 18.5 %
N digestibility rabbit - 56.9 %
Amino acids
Parameter As fed On DM Unit Other Unit SD Range Count SD Range Count SD Range Count
Lysine 1.5 1.6 g/kg 3.1 g/16g N 1 1 1
Threonine 1.2 1.3 g/kg 2.6 g/16g N 1 1 1
Isoleucine 1.2 1.3 g/kg 2.6 g/16g N 1 1 1
Valine 1.5 1.6 g/kg 3.1 g/16g N 1 1 1
Leucine 1.9 2.1 g/kg 4 g/16g N 1 1 1
Phenylalanine 1.2 1.3 g/kg 2.6 g/16g N 1 1 1
Tyrosine 2.1 2.4 g/kg 4.6 g/16g N 1 1 1
Phenylalanine + tyrosine 3.4 3.7 g/kg 7.1 g/16g N 1 1 1
Histidine 0.7 0.7 g/kg 1.4 g/16g N 1 1 1
Arginine 1.3 1.5 g/kg 2.9 g/16g N 1 1 1
Alanine 1.7 1.9 g/kg 3.7 g/16g N 1 1 1
Aspartic acid 9.3 10.2 g/kg 19.7 g/16g N 1 1 1
Glutamic acid 3.9 4.3 g/kg 8.3 g/16g N 1 1 1
Glycine 1.3 1.5 g/kg 2.9 g/16g N 1 1 1
Serine 2.1 2.4 g/kg 4.6 g/16g N 1 1 1
Proline 1.6 1.8 g/kg 3.4 g/16g N 1 1 1
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