Journal
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
Volume 93, Issue 6, Pages 754-760Publisher
WILEY
DOI: 10.1111/j.1439-0396.2008.00864.x
Keywords
soybean peptides; broilers; growth performance; intestinal structure; intestinal mucosal immunity
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P>Five-hundred 1-day-old broilers were randomly assigned to five groups, 100 chickens for each group. From group 1 to 3, 80, 120 and 200 mg/kg soybean peptides was added to the diets respectively; in the fourth group, 3.2 mg/kg genramycin was added; and the fifth group was the control without soybean peptides and antibiotics. At the age of 28 and 49 days, the number of goblet cells (GC), intestine intraepithelial lymphocyte, immunoglobulin A-forming cells, the ratio of villous height and crypt depth (V/C) of broiler's duodenum, jejunum and cecum were observed by the application of haematoxylin and eosin or histochemistry staining. The results indicated that soybean peptides added with 80-120 mg/kg could increase daily weight gain, the number of GC and V/C. Soybean peptides could modulate intestinal mucosal immunity of broilers.
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