Comparison of the in situ degradation parameters of fresh and frozen-thawed 15N-labelled alfalfa and ryegrass
سال انتشار: 1393
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 263
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شناسه ملی سند علمی:
JR_KLST-2-1_004
تاریخ نمایه سازی: 12 خرداد 1398
چکیده مقاله:
Degradation of dry matter (DM) and nitrogen (N) in fresh or frozen-thawed alfalfa and ryegrass was studied by using in situ technique. The forages were labeled with 15N during growth in a glasshouse, harvested at similar growth phase, and fresh (F) or frozen-thawed (FT) samples were incubated in the rumen of 3 sheep. There was no difference (P> 0.05) between forage type (S) for the immediately soluble fraction (a) and the insoluble but slowly degradable fraction (b) estimates for DM and N disappearance over time. However, 15N values for a and b were significantly (Pb (c) and potential degradability of DM, N and 15N; degradation rate of b for DM, N and 15N were higher for alfalfa. There was no effect due to sample preparation (M) in degradation rate (c) for DM and 15N but FT had a significantly (P15N. Mean estimates of effective rumen degradable protein due to forage species were significantly (Pin situ degradation determination the same preparation method be used throughout.
کلیدواژه ها:
نویسندگان
R. Tahmasbi
Department of Animal Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, ۷۶۱۶۹-۱۳۳, Kerman, Iran
A. Khezri
Department of Animal Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, ۷۶۱۶۹-۱۳۳, Kerman, Iran
O. Dayani
Department of Animal Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, ۷۶۱۶۹-۱۳۳, Kerman, Iran