Effects of red-osier dogwood extracts on growth performance, intestinal digestive and absorptive functions, and meat quality of broiler chickens

A total of 320 one-day-old Cobb 500 chicks with an initial weight 48.3 ± 3.3 g·pen −1 were assigned to four dietary treatments eight replicates provided in three phases for 46 d. The fed as mash diets and included (1) negative control (NC) corn-soybean basal diet, (2) positive (PC) diet 30 ppm avilamycin, (3) supplemented 1000 red-osier dogwood extracts (RDE1), (4) 3000 (RDE2). Results showed reduced jejunal crypt depth RDE1 increased villus:crypt ratio groups (either or RDE2) (P < 0.05). Cationic amino acid (AA) transporter mRNA abundance was decreased 0.05) RDE1, RDE2, PC treatments, but peptide neutral AA higher RDE2 compared NC. Apparent ileal digestibility crude fat NC, whereas greater In conclusion, had no effect on growth performance, improved the intestinal health function broiler chickens, detrimental effects meat quality.