Publication Date

1997

Description

The objective was to determine the effect of protein degradability and supplement level on forage degradation. Steers fistulated were utilizated in brachiaria (Brachiaria brizantha) pasture. A randomized block design was used with a control treatment and supplements according to a factorial scheme combining low, medium and high protein degradability with supplementation levels: low, medium and high analysed as principal treatments and incubation time as splitplot by SAS. Nylon bags were incubated at 4; 8; 12; 24; 48; 72; 96 and 120 hours to determine DM, CP and NDF degradation. There was no effect (P>0.05) of protein degradability and supplementation levels on ruminal degradation being not different (P>0.05) from control. The exponencial model indicated that 29% of CP constituted the soluble fraction and the insoluble potentially degradable was 50% with degradation rate of 4.15%. Concerning the NDF 57% was potentially degradable at a rate of 4.02%.

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Protein Degradability Effect and Supplementation Level on Pasture Utilization

The objective was to determine the effect of protein degradability and supplement level on forage degradation. Steers fistulated were utilizated in brachiaria (Brachiaria brizantha) pasture. A randomized block design was used with a control treatment and supplements according to a factorial scheme combining low, medium and high protein degradability with supplementation levels: low, medium and high analysed as principal treatments and incubation time as splitplot by SAS. Nylon bags were incubated at 4; 8; 12; 24; 48; 72; 96 and 120 hours to determine DM, CP and NDF degradation. There was no effect (P>0.05) of protein degradability and supplementation levels on ruminal degradation being not different (P>0.05) from control. The exponencial model indicated that 29% of CP constituted the soluble fraction and the insoluble potentially degradable was 50% with degradation rate of 4.15%. Concerning the NDF 57% was potentially degradable at a rate of 4.02%.