The investigation of parameters of rumen degradability, post-ruminal disappearance and nutritive value of siris leave, flower and pod in the ruminant

Siris including plenty leave, high nitrogen and calcium and can be used as livestock feed.
The aim of this experiment was to investigate chemical composition and parameters of rumen degradation and post-ruminal disappearance of siris leave, flower and pods in ruminants.
Chemical composition was measured using standard methods and parameters of rumen degradation were determined using in situ technique. Post-ruminal disappearance of protein for diets containing different levels of siris leave, flower and pods as replacement of alfalfa were determined.
Protein content of leave (22.4%), flowers (22.75%) and siris pods (17.73%) was more than alfalfa protein (17%). Fraction a (rapidly degradable), b (slowly degradable) and c (constant rate of degradable) of dry matter were 0.33 %, 0.37 % and 0.05 %/h for leave, 0.45 %, 0.44 % and 0.03 %/h for flower and 0.37 %, 0.18 % and 0.1 %/h for pods, respectively. The highest fraction (a) of protein was for siris flower (80.48 %) and lowest was for alfalfa (23.17 %). The highest fraction (b) and (c) of protein in alfalfa (58.75 % and 0.13 %, respectively) and lowest fraction (b) of protein was for the siris pods (13.54 %). The results showed that diets containing 25 (39.20 %, 45.18%) and 100% siris leave (20.38, 51.81%) and diets containing 75 and 100 % siris flower (27.92 %, 52.84 %) had highest RDP and RUP, and content of RDP were significantly increased in compared with control diet (P Therefore, because of proper chemical composition and rumen degradation and post-ruminal disappearance of leave, flower and pods in siris can be used in ruminant nutrition, but it needs to further studies.