Document Type : Research Paper
Author
Abstract
The effect of partial replacement of barley with sugar beet pulp (SBP) with and without roasted canola seeds (RCS) on the performance, morphology, VFA and digesta pH in the small intestine of finishing lambs was investigated. In this study 24 Arbia male lambs with average body weight of 23.7±2.5 kg were used in a 2 × 2 factorial experiment over 84 days. Treatments were carbohydrate factor (barley or SBP) and roasted canola seed (with and without RCS). Partial replacement of barley with SBP significantly increased average daily gain (P < 0.05). Partial replacement of barley grain with SBP increased thickness of muscle, crypt depth and Brunner’s glands in duodenum and villus height, villous width, villus number, thickness of the epithelium, thickness of muscle, crypt depth and villous height to crypt depth in jejunum and villus height and thickness of muscle in ileum (p<0.05). Feeding lambs with diets containing RCS significantly increased Brunner’s glands,villus number and the thickness of the epithelium (P<0.05). Partial replacement of barely by SBP and adding RCS to diet increased significantly concentration individual VFA, total VFA and digesta pH in duodenum and jejunum. Based on the results, the performance of lambs improved as a result of partial replacement of barley with SBP and addition RCS to diets with high concentrate due to changes in the density of volatile fatty acids, digestive fluid pH of the small intestine and the development of the small intestine tissue morphology.
Keywords
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