BD9M3RI4

2693

6 janvier 2021 16:25

6 janvier 2021 16:25

This study describes the process of developing an enzymatic pretreatment to improve the nutritional value of feather meal (FeM). In a first experiment, a full factorial design was used to examine the effects of various incubation conditions on the solubilization of nitrogen in FeM. We incubated FeM for 3 h with various levels of a commercial alkaline serine protease (Savinase® 16L), sodium sulphite (Na2SO3), and digestion buffer. A Savinase® 16L level of 3% (%FeM v/w), Na2SO3 level of 3% (%FeM w/w), and digestion buffer level of 500% (%FeM w/w) were identified as the optimal conditions. Under these optimal conditions, 45% of the nitrogen in FeM was solubilized. In a second experiment, we evaluated the effect of more economically sustainable incubation conditions on the in vitro digestibility of protein (pepsin-HCl digestibility and multistep protein evaluation) in FeM. Two FeMs were incubated with 0.5% Savinase® 16L (%FeM v/w), 2% Na2SO3 (%FeM w/w), and 200% buffer (%FeM w/w) for 24 h. The pretreatment improved pepsin-HCl digestibility by 7–16% and the total tract degradable protein content by 14–50%. Accordingly, this novel pretreatment could be applied in the animal feed industry to improve the nutritional value of FeM.

None

• AB - Transversal
• FREDO alimentation animale
• FREDO technologie et innovation
• GEO Canada
• protein
• autonomie alimentaire
• feed
• économie circulaire

• digestibility
• enzymatic hydrolysis
• feather meal
• keratin
• protein

AgriEngineering

1

475-484

2019/12

24 décembre 2019

10.3390/agriengineering1040034 Le DOI est une URL unique de référencement d'une publication. Il est donc plus fiable et permanent qu'une URL classique