Document Type : Research Paper
Authors
1 student
2 animal science group, agriculture collage, guilan university
3 animal science group, agriculture faculty, guilan university
Abstract
This study aimed to investigate the effect of different wheat bran processing methods on growth performance, intestinal morphology, serum parameters, and immune system in broiler chickens from 1 to 42 days of age. A total of 504 one-day-old male broiler chickens (Ross 308 with 42.8 ± 0.44 average weight) were distributed in a completely randomized design into 7 experimental treatments (with 6 replicates, each containing 12 birds). Experimental treatments were: basal diet (without wheat bran), 2 diets with 3 and 6% wheat bran without processing, diets with 3 and 6% extruded wheat bran and diets with 3 and 6% wheat bran fermented with Saccharomyces cerevisiae. For each experimental period, feed intake and body weight gain were measured and feed conversion ratio was calculated. All experimental treatments reduced serum glucose concentration compared to the control group (P < 0.01). The levels of cholesterol, uric acid, albumin, total protein and aspartate aminotransferase enzyme activity were significantly increased in all experimental groups compared to the control group (P < 0.01). Birds fed 3% and 6% fermented wheat bran in their diets showed significantly lower crypt depth compared to the control group (P < 0.05). The results showed that in general, the ratio of villus height to crypt depth, which indicates the level of absorption, was improved in the extruded and fermented wheat bran treatments at 3% and the use of wheat bran up to 6% in processed and unprocessed form did not have a negative effect on broiler performance and carcass characteristics.
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