Comparative Effects of Blended Herbal Extracts and Mixed Prebiotics on Growth Performance, Carcass Yields and Intestinal Morphology of Broiler Chickens
Abstract
An experiment was conducted to determine the effect of blended herbal extracts (BHEs; Origanum vulgare L., Cinnamomum zeylanicum Nees. and Capsicum frutescens L.) and mixed prebiotics (MPs; Mannanoligosaccharide and beta-glucan) in feed on the growth performance, carcass yield and intestinal morphology of broilers. Two hundred and seventy male broiler chickens (Arbor Acres) were divided into 3 groups and each group consisted of 5 replicates of 18 chicks each. The experiment was established as a completely randomized design. There were 3 experimental diets: 1) a control diet; 2) the control diet supplemented with blended herbal extracts (BHEs; 150 g/t); and 3) the control diet supplemented with mixed prebiotics (MPs; 2,000 g/t). At age 35 days, the results indicated that the feed conversion ratio (FCR) was significantly improved by supplementation with BHEs compared to MPs (P<0.05), while supplemental MPs seemed to increase the feed intake (P=0.08). Supplementation of BHEs or MPs significantly improved the breast meat yield and increased the villi height in the segment of the duodenum (P<0.05). However, the breast meat yield of the group fed MPs was higher than that of BHEs (P<0.05). In conclusion, supplementing mixed prebiotics or blended herbal extracts showed potential to promote the breast meat yield and improve the small intestine morphology by different mechanisms.
Keywords:
Broiler, growth performance, herbal extracts, intestinal morphology, prebioticsGeographical Article Usage
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