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Table 6 Amount of anti-nutritional factors in canola meal and their main effects

From: A review of canola meal as an alternative feed ingredient for ducks

Component References
Sinapine % Phytic acid % Glucosinolates (μmol g−1) Tannins, %
Average amount
 0.6–1.8 3.0–6.0 18.3 1.5–3.0 [37]
 0.6–1.8 3.0–6.0 10–12 1.5–3.0 [6]
 1.0 4.0 16 1.5 [25]
 1.0 5.5 [17]
 0.79–0.97 1.73–5.26 [5]
Effects on poultry     
Bitter flavor. Binds minerals Enlargement of internal organs like liver and Kidney Impairs digestion. Especially protein [6]
Layers produce “Fishy eggs”.
Production of off flavor “Fishy eggs” Render the minerals and make them unavailable for absorption Decrease the growth rates of broilers, increase the thyroids and liver sizes and cause hemorrhagic liver syndrome Interfere with digestive enzymes and lower the nutrient utilization [37]
By layer hens
No real evidence that canola cultivars with zero glucosinolates may cause any effect [25]
“Fishy taint” in brown shell egg Make protein and minerals biologically unavailable. Interfere with the function of thyroid gland and adversely affect growth performance Affect protein digestion and poor growth performance in broiler [17]
  1. Dashes indicate that no data were available