Comparison of protein fraetions of hazelnut-meal with soybean -meal by using in situ technique

Authors : Mehmet Akif KARSLI, Hüseyin NURSOY

Pages : 126-130

View : 11 | Download : 10

Publication Date : 2001-06-01

Article Type : Research Paper

Abstract :The aim of this study was to compare ruminal dry matter DM and crude protein CP degradation kinetics, and protein fraetions of hazelnııt-meal with soybean-meal by using in situ technique. To determine the Chemical compositions of samples, oven-dried samples of hazelnut-meal HZM and soybean-meal SBM were ground through a 1-mm sereen and theıı, analyzed for DM, organic matter OM , ether extract EE , crude fiber CF , CP, and acid detergent insoluble nitrogen ADİN concentrations. To estimate in situ degradation kinetics and fraetions of CP, three mature fıstulated rams fed ground alfalfa hay plus barley were used for incubation of samples in this study. Samples were incubated in the rumen of rams for periods of 0, 3, 6, 12, 24, and 48 h. The concentrations of DM, OM, EE, CF, CP, and ADIN-N were 89.6, 93.5, 1.60, 7.28, 42.45, 8.45 for SBM and 92.2, 94.1, 4.43, 7.33, 40.09, 5.52 for HZM, respeetively. Hazelnut-meal had signifıcantly higher P< 0.05 in situ ruminal DM and CP degradability compared with SBM at ali incubation times,except 48-h incubation time. The rate of CP degradation k and water soluble protein WSP concentration were higher, but concentrations of potantially degradable PDP , non-digestible NDP , and escape protein EPP were lower in HZM compared with SBM P< 0.05 . It was concluded that hazelnut-meal may be substituted with soybean-meal as a protein supplement for ruminants as long as supplemented with protein sources which is high in undegradable intake protein UIP when fed to high producing dairy cows or last growing beef steer and bulls
Keywords : Fındık küspesi Soya küspesi In situ yıkılabilirlik, By pass protein