Determination of Dry matter and Crude Protein degradability of Roselle Seed (Hibiscus sabdariffa) Using Nylon Bags Technique

Abstract

This study was carried out to determine the rumen degradability of dry matter (DM) and crude protein (CP) degradation of Roselle Seed (CRS), and three oilseed cakes, Groundnut cake (GNC), Cotton seed cake (CSC) and Sunflower cake (SFC). In situ trial three fistulated bulls were employed; nylon bags were used, and incubated in the rumen of each animal for 3, 6, 9, 12, 24, 36, 48 and 72hrs. Significant differences (P<0.05) were obtained among the oilseed cakes for (DM) and (CP) degradability according to feed samples and incubation times. Dry matter and crude protein of GNC were found higher than those of other cakes at different incubation time and CSC had the lowest (DM) and (CP) disappearance percentage than SFC and CRS. While SFC and CRS recorded medium degradation of dry matter in all incubation period intervals. Moreover CSC revealed the highest content of the nutrient detergent fibre NDF, acid detergent fibre ADF and acid detergent lignin ADL. Followed by SFC, GNC and CRS. The result of the present study compared well with other similar degradation studies