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  • Title: Digestibility energy and amino acids of canola meal from two species (Brassica juncea and Brassica napus) fed to distal ileum cannulated grower pigs.
    Author: Le MH, Buchet AD, Beltranena E, Gerrits WJ, Zijlstra RT.
    Journal: J Anim Sci; 2012 Dec; 90 Suppl 4():218-20. PubMed ID: 23365335.
    Abstract:
    Yellow-seeded Brassica juncea is a novel canola species targeted to grow in the southern Canadian prairies where thermotolerance, disease resistance, and adaptation to dry agronomic conditions are required. The support of its cultivation needs nutritional evaluation of its coproduct. The B. juncea canola meal (CM) contains less fiber than conventional, dark-seeded Brassica napus CM but also slightly less Lys. In a 6 × 6 Latin square, 6 distal ileum cannulated pigs (47 kg BW) were fed 6 diets to determine the apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of CP and AA, AID and apparent total tract digestibility (ATTD) of energy, and VFA content in digesta and feces. Pigs were fed 6 diets: basal [46% wheat (Triticum aestivum) and corn (Zea mays) starch], 4 diets with 46% wheat and either B. juncea or B. napus CM at 25 or 50%, and a N-free diet based on corn starch. The B. juncea CM had higher (P < 0.05) ATTD of energy than B. napus CM (68.6 vs. 60.3%) likely due to its lower fiber content. Ileal total VFA was lower (P < 0.001) in pigs fed B. juncea than B. napus CM diets. In pigs fed B. juncea CM, the molar ratio in digesta was lower (P < 0.001) for acetate and butyrate whereas the propionate ratio was lower (P < 0.001) in feces than in pigs fed B. napus CM diets. The CM species did not affect the AID of energy, SID of AA, and feces VFA content. The DE value was higher (P < 0.05) and content of SID Lys was lower (P < 0.05) for B. juncea than B. napus CM. In conclusion, availability of B. juncea CM, a coproduct of a canola species grown in Canadian prairie land, will increase flexibility in swine feed formulation.
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