Evaluation of the Nutrient Content and Protein Fractions of Four Different Common Vetch Varieties

Authors : Mehmet Akif KARSLI

Pages : 1291-1297

View : 18 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The objectives of this study were to determine the chemical composition, digestibility, in situ N kinetics, and by-pass protein contents of 4 different common vetch varieties grown under irrigation. Four different common vetch varieties insert ignore into journalissuearticles values(Emir 20/1, Nilüfer 17/1, 28/1, and Uludağ 31/4); with different characteristics were selected. The vetch plots were planted on June 15 2002 and each variety was randomly assigned to 3 replications. The vetches were harvested by hand using a clipper on September 11. All samples were analyzed for dry matter insert ignore into journalissuearticles values(DM);, ash, crude protein insert ignore into journalissuearticles values(CP);, neutral detergent fiber insert ignore into journalissuearticles values(NDF);, acid detergent fiber insert ignore into journalissuearticles values(ADF); and acid detergent insoluble nitrogen insert ignore into journalissuearticles values(ADIN); concentrations. In vitro dry matter digestibility, and in situ degradability of samples at given times were also determined. While the concentrations of DM and ADIN-N did not differ, concentrations of organic matter insert ignore into journalissuearticles values(OM);, CP, NDF, and ADF varied significantly among different vetch varieties insert ignore into journalissuearticles values(P < 0.05);. The water soluble DM content of Nilüfer 17/1 was significantly greater then that of 28/1 insert ignore into journalissuearticles values(P < 0.05);, but in situ DM degradabilities after 48-h incubation, in vitro dry matter digestibilities, and metabolizable energy insert ignore into journalissuearticles values(ME); and net energy for lactation insert ignore into journalissuearticles values(NEL); values were statistically similar among the vetch varieties insert ignore into journalissuearticles values(P > 0.05);. While the water soluble protein insert ignore into journalissuearticles values(WSP); concentration was lower, concentrations of potentially degradable protein insert ignore into journalissuearticles values(PDP);, and by-pass CP as a percentage of total digestible CP or DM were significantly greater in 28/1 than in Nilüfer 17/1 and Uludağ 31/4 insert ignore into journalissuearticles values(P < 0.05);. However, concentrations of non-degradable protein insert ignore into journalissuearticles values(NDP); and in situ CP degradabilities after 48-h incubation did not differ among the vetch varieties insert ignore into journalissuearticles values(P > 0.05);. It can be concluded that if high by-pass protein content is desired, 28/1 and Emir 20/1 should be preferred over the other varieties. Otherwise, Nilüfer 17/1 and Uludağ 31/4 should be first choice, based on DM digestibility and CP contents, because the energy contents and percentage of non-digestible CP did not differ among the vetches.
Keywords : Common vetch, digestibility, by pass protein