El-Shinnawy,, M., Mehrez, A., El-Ashry, M., Ead, H. (2001). INFLUENCE OF SOME NITROGEN SOURCES ON FERMENTATION AND DIGESTION OF DIFFERENT POOR QUALITY ROUGHAGES. 2. THE DIGESTION COEFFICIENTS, FEED INTAKE, N-BALANCE AND FEEDING VALUE OF RATIONS.. Journal of Animal and Poultry Production, 26(11), 6779-6795. doi: 10.21608/jappmu.2001.258153
M. M. El-Shinnawy,; A. Z. Mehrez; M. A. El-Ashry; H. M. E. Ead. "INFLUENCE OF SOME NITROGEN SOURCES ON FERMENTATION AND DIGESTION OF DIFFERENT POOR QUALITY ROUGHAGES. 2. THE DIGESTION COEFFICIENTS, FEED INTAKE, N-BALANCE AND FEEDING VALUE OF RATIONS.". Journal of Animal and Poultry Production, 26, 11, 2001, 6779-6795. doi: 10.21608/jappmu.2001.258153
El-Shinnawy,, M., Mehrez, A., El-Ashry, M., Ead, H. (2001). 'INFLUENCE OF SOME NITROGEN SOURCES ON FERMENTATION AND DIGESTION OF DIFFERENT POOR QUALITY ROUGHAGES. 2. THE DIGESTION COEFFICIENTS, FEED INTAKE, N-BALANCE AND FEEDING VALUE OF RATIONS.', Journal of Animal and Poultry Production, 26(11), pp. 6779-6795. doi: 10.21608/jappmu.2001.258153
El-Shinnawy,, M., Mehrez, A., El-Ashry, M., Ead, H. INFLUENCE OF SOME NITROGEN SOURCES ON FERMENTATION AND DIGESTION OF DIFFERENT POOR QUALITY ROUGHAGES. 2. THE DIGESTION COEFFICIENTS, FEED INTAKE, N-BALANCE AND FEEDING VALUE OF RATIONS.. Journal of Animal and Poultry Production, 2001; 26(11): 6779-6795. doi: 10.21608/jappmu.2001.258153
INFLUENCE OF SOME NITROGEN SOURCES ON FERMENTATION AND DIGESTION OF DIFFERENT POOR QUALITY ROUGHAGES. 2. THE DIGESTION COEFFICIENTS, FEED INTAKE, N-BALANCE AND FEEDING VALUE OF RATIONS.
1Animal Production Department, Faculty of Agriculture, Mansoura University.
2Animal Production Department, Faculty of Agriculture, Ain Shams University.
3Animal Production Research Institute, Agriculture Research Center, Dokki, Giza, Egypt.
Abstract
Three healthy Rahmany rams were used. They were fed at 90% of their ad libitum intake during successive metabolism trials. The experimental rations were formulated to be almost iso-nitrogenous and contain about 12% crude protein recommended by Ærskov et al. (1972) to ensure maximal rate of fermentation in the rumen as follows:
The results obtained showed that : There were no significant effects on the digestion coefficient of DM, OM, CP, hemicellulose, N-balance and DCP% when feeding on RS or MS and CS. The CF digestibility increased significantly (P<0.05) when feeding on RS than MS or CS (64.04, 52.89 and 50.41%, respectively). The NDF digestibility increased significantly (P<0.05) when feeding on MS or RS than CS (58.69, 54.92 and 48.03%, respectively). The ADF digestibility increased significantly (P<0.05) when feeding on RS than MS or CS (60.09, 54.20 and 41.90, respectively). Cellulose digestibility increased significantly (P<0.05) when also feeding on RS than MS or CS (72.21, 65.85 and 51.31%, respectively). The dry matter intake (DMI) increased significantly (P<0.05) when feeding on CS than MS or RS (905.37, 799.64 and 761.66 g/day, respectively). The TDN% increased significantly (P<0.05) when feeding on RS or MS than CS (60.11, 60.52 and 55.53, respectively).
The DM digestibility increased significantly (P<0.05) when added CFM than with SBM or urea (64.4, 58.52 and 55.54, respectively) and the OM digestibility was as the same trend (68.40, 61.68 and 58.41%, respectively). The ADF digestibility increased significantly (P<0.05) when added CFM or with SBM than added urea (53.49, 53.89 and 48.82%, respectively) but cellulose digestibility increased when added CFM than with SBM or urea (68.09, 63.09 and 58.19%, respectively). The DMI increased (P<0.05) when added CFM than with SBM or urea (919.20, 737.61 and 809.87 g/day, respectively). The TDN % values were higher (P<0.05) when added CFM than with SBM or urea (63.02, 56.43 and 57.61, respectively).
In general, there were positive effects on cell wall digestion with N-sources when feeding on RS but there were negative effects on the feeding with MS and there were no significant effect in feeding with CS.
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