In vitro studies were carried out to investigate the effect of using crude glycerol (biodiesel co-product) as a substitute for yellow corn with some feed additives. Corn comprising 30% of the whole diet was substituted by crude glycerol at four levels (0, 25, 50 and 75%) with three types of additives; buffer (NaHCO3& MgO), dry yeast (Saccharomyces cerevisiea) and fibrolytic enzymes. In vitro dry matter disappearance (IVDMD), organic matter disappearance (IVOMD) and total gas production (GP) were studied. Crude glycerol substitution at 25% significantly increased (P<0.05) IVDMD, IVOMD and GP values, while 50 and 75% glycerol significantly decreased (P<0.05) IVOMD and GP values compared with control. No significant difference was observed for IVDMD value when crude glycerol was included at 50% of yellow corn. Addition of 4 g/kg DM of either fibrolytic enzymes or dry yeast significantly increased (P<0.05) IVDMD by 6.5 and 6%, IVOMD by 6 and 4% and GP by 15.8 and 11.5%, respectively. On the other hand, buffer addition had no effect on measured parameters. Using high level of fibrolytic enzymes or dry yeast (6 g/kg DM) significantly increased (P<0.05) IVDMD, IVOMD and GP values for 25 and 50% glycerol compared with the lower level (4 g/kg DM). In conclusion, crude glycerol in combination either with 6g/kg DM fibrolytic enzyme (ALLZYME™) or dry yeast (Saccharomyces cerevisiea) could replace up to 50% of the yellow corn equivalent to 15% of the whole dietary DM
Hanafy, M., Youssef, M., Badr, A., Ghoneem, W., & Rashid, M. (2015). IN-VITRO EVALUATION OF DIETS CONTAINING CRUDE GLYCEROL AS A SUBSTITUTE FOR CORN WITH SOME ADDITIVES. Egyptian Journal of Nutrition and Feeds, 18(2), 203-211. doi: 10.21608/ejnf.2015.104867
MLA
M. A. Hanafy; Mervat S.H. Youssef; Azza M. Badr; Wafaa M.A. Ghoneem; M. R. Rashid. "IN-VITRO EVALUATION OF DIETS CONTAINING CRUDE GLYCEROL AS A SUBSTITUTE FOR CORN WITH SOME ADDITIVES". Egyptian Journal of Nutrition and Feeds, 18, 2, 2015, 203-211. doi: 10.21608/ejnf.2015.104867
HARVARD
Hanafy, M., Youssef, M., Badr, A., Ghoneem, W., Rashid, M. (2015). 'IN-VITRO EVALUATION OF DIETS CONTAINING CRUDE GLYCEROL AS A SUBSTITUTE FOR CORN WITH SOME ADDITIVES', Egyptian Journal of Nutrition and Feeds, 18(2), pp. 203-211. doi: 10.21608/ejnf.2015.104867
VANCOUVER
Hanafy, M., Youssef, M., Badr, A., Ghoneem, W., Rashid, M. IN-VITRO EVALUATION OF DIETS CONTAINING CRUDE GLYCEROL AS A SUBSTITUTE FOR CORN WITH SOME ADDITIVES. Egyptian Journal of Nutrition and Feeds, 2015; 18(2): 203-211. doi: 10.21608/ejnf.2015.104867