The effects of enzyme addition to broiler diets containing high concentrations of canola or sunflower meal

Abstract

The effects of two commercial enzyme products on the nutritive value of canola meal (CM) and sunflower meal (SFM) were determined in a classical AME bioassay with special emphasis on the utilization of nonstarch polysaccharides (NSP). The enzymes were added to semi-purified broiler grower diets based on corn and casein containing 35% CM or 35% SFM, respectively. Feed intake, growth, and AME of the diets were significantly (P < 0.001) affected by type of oilseed meal included in the diet. Birds fed the SFM-based diets had a significantly (P < 0.001) higher growth rate and AME and a lower feed conversion ratio (FCR) than did birds fed the CM-based diets. The addition of enzymes to either CM- or SFM-based diets had no significant effects on growth performance and AME; however, the addition of enzymes to CM-based diets resulted in a significant reduction in the concentration of soluble NSP in the jejunum (Enzyme A) or a significant reduction of total NSP in the jejunum (Enzyme B). The AMEn was significantly lower in diets containing CM supplemented with Enzyme B. The addition of enzymes to SFM-based diets significantly improved NSP digestion in the jejunum and protein digestion in the ileum. The results of this study indicate that commercial enzyme products had some effects in diets containing high concentrations of CM or SFM. However, these effects could only be seen after detailed analyses of feed and digesta and did not result in significant improvement in growth performance of broilers.

Sunflower meal and enzyme supplementation of the diet of 21- to 42-d-old broilers

“…Tavernari et al obtained better dry matter digestibility and better coefficients of Ca and P metabolizability in broilers fed diets with SFM supplemented with enzymes. Kocher et al (2000), on the other hand, did not observe any effects of enzyme addition in feeds containing sunflower meal.…”

“…Exogenous enzymes are frequently added to feeds to improve the nutritional value of feedstuffs, particularly of those containing high fiber levels (Kocher et al, 2000). Tavernari et al obtained better dry matter digestibility and better coefficients of Ca and P metabolizability in broilers fed diets with SFM supplemented with enzymes.…”

Effects of Diets with Graded Levels of Canola Meal on the Growth Performance, Meat Qualities, Relative Organ Weights, and Blood Characteristics of Broiler Chickens

“…The BW of broilers fed a diet supplemented with 7 and 10% CM decreased by 8.9 and 13.2%, respectively (Borcea et al, 1996). In contrast, it has been reported that the replacement of 100% SBM by CM maintained broiler performance, provided diets are supplemented with lysine (Leeson et al, 1987;Kocher et al, 2000). The observed discrepancy in CM feeding values prompted us to study the effects of the dietary inclusion of graded levels of CM on the growth performance of broilers.…”

Evaluation of Different Levels of Canola Meal on Performance, Organ Weights, Hepatic Deiodinase Gene Expression and Thyroid Morphology in Broiler Chickens

“…Despite all these, several authors have showed no adverse effect of high dietary inclusion of CM on growth performance of broilers (Kocher et al, 2000;Baloch et al, 2003). CM can be included effectively in the diet of broilers at a level of up to 30% without affecting growth performance, as long as diets are formulated on the basis of digestible amino acid (Canola Council of Canada, 2009).…”