In situ amino acid disappearance from regular, low and high fiber canola meal

Abstract

. 1997. In situ amino acid disappearance from regular, low and high fiber canola meal. Can. J. Anim. Sci. 77: 533-535. In situ rumen disappearance of low and high fiber canola meal relative to regular canola meal was determined following 12 h of rumen incubation. In situ amino acid disappearance was similar in low and high fiber and regular canola meal except for threonine and glutamate which was lower (P < 0.05) in high fiber canola meal. It was concluded that ruminal disappearance of amino acids was similar across the three meal types.Key words: Tail-end dehulling, canola meal, high fiber canola meal, low fiber canola meal Mustafa, A. F., McKinnon, J. J. et Christensen, D. A. 1997. Digestion apparente in situ des acides aminés provenant de tourteaux de colza canola à haute et à basse teneur en fibres. Can. J. Anim. Sci. 77: 533-535. Nous avons déterminé après 12 h d'incubation dans le rumen la digestion apparente in situ de tourteaux de colza canola à haute et à basse teneur en fibres par comparaison à celle d'un tourteau de canola ordinaire. La digestion apparente des acides aminés était la même pour les 3 types de tourteau, sauf celle de la thréonine et du glutamate qui étaient moins fortes (P < 0,05) dans le tourteau riche en fibres. D'une façon générale, la digestion ruminale apparente des acides aminés était donc semblable dans les 3 tourteaux.

Comparison of canola and mustard presscake from biodiesel production as protein sources for growing cattle

“…In the above studies (McKinnon et al 1991;Mustafa et al 1999), CM was subjected to heat treatment in addition to that used in the regular solvent extraction process in order to alter the level of ruminally degradable protein. Regular CM not subjected to this additional heat processing contains a high level of rumen degradable protein (830 g kg (1 ; Mustafa et al 1997). In the current study, the effective rumen degradable protein of CPC and MPC was greater (P B0.05) than that of CM (773 and 775 vs. 731 g kg (1 , respectively), likely due to the lack of heat applied to the CPC and MPC during production.…”