Effects of enzyme supplementation on the digestion of low glucosinolate rapeseed meal in vitro, and its utilization by broiler chicks

Abstract

The effect of 6 commercial enzyme preparations, degrading mainly the non-starch polysac charides, on the nutritional value of low-glucosinolate rapeseed meal (RSM) was evaluated in vitro and in vivo. Solubility of protein, ADF and NDF in RSM incubated with or without the addition of 1% of enzyme was measured in vitro. The protein and amino acid digestibility and metabolizable energy of RSM was determined on 4-weeks old broiler cockerels in a balance experiment, while growth performance was evaluated for 3 weeks in 8-day old cockerels fed diets containing 35% of RSM unsupplemented or supplemented with 0,1 % of enzyme.In vitro protein solubility was increased by Bio-feed Pro and Energex and solubility of NDF and ADF by Energex only after 10 h incubation. None of the preparations improved significantly the protein and amino acids digestibility nor AME N value in the balance experiment but significant changes in apparent digestibility of NDF and ADF were found.No statistically significant effects of enzymes on chicken performance were noted, however chicks fed the diet with Bio-feed Plus were the heaviest and better utilized feed, while those fed with Bio-feed Pro had lower feed utilization.

Effect of cellulase, phytase and pectinase supplementation on growth performance and nutrient digestibility of rainbow trout (Oncorhynchus mykiss, Walbaum 1792) fry fed diets containing canola meal

“…These NSPs may increase viscosity of digesta and result in decreased nutrient digestibility (Ravindran and Bryden, ; Liang, ). There are no NSP‐degrading enzymes in the digestive tracts of monogastric animals and therefore most nutrients cannot be fully utilized (Alloui et al., ).…”

Utilization of Canola Meal With or Without Phytase Enzyme in Broiler Diets

“…While Guenter et al (2001) reported that the use of phytase enzyme in the CMbased diets increased the feed intake. Bedford and Morgan (1995) reported that the addition of enzyme decreased feed intake but, Alloui et al (1994), Kocher et al (20001, Silominski and Campbell (1990) reported that the addition of enzyme did not affect the feed intake.…”