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http://dx.doi.org/10.5762/KAIS.2018.19.12.740

Effects of Dietary Supplementation of Enzyme complex on Growth Performance, Carcass Characteristics and Meat storability in Broiler Chickens  

Kim, Ki-Hyun (National Institute of Animal Science, RDA)
Jeong, Jin-Young (National Institute of Animal Science, RDA)
Song, Il-Hwan (Department of Animal Life and Environment Science, Hankyong National University)
Lee, Sung-Dae (National Institute of Animal Science, RDA)
Ji, Sang-Yun (National Institute of Animal Science, RDA)
Lee, Yoo-Kyong (National Institute of Animal Science, RDA)
Nam, Ki-Taeg (Department of Animal Life and Environment Science, Hankyong National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.19, no.12, 2018 , pp. 740-748 More about this Journal
Abstract
This study was conducted to investigate the effects of dietary supplementation of enzyme complex (metalloprotease and xylanase) on growth performance, carcass characteristics and meat storability of broiler chickens. The experiment utilized a 2 (basal and low spec diets) ${\times}$ 3 (0, 0.5 or 1 g/kg of enzyme supplementation) factorial arrangement. A total of 360 male Ross broilers were randomly assigned into the following six groups: BD-T0 (basal diet + enzyme complex 0 g/kg), BD-T1 (basal diet + enzyme complex 0.5 g/kg), BD-T2 (basal diet + enzyme complex 1 g/kg), LD-T0 (low spec diet + enzyme complex 0 g/kg), LD-T1 (low spec diet + enzyme complex 0.5 g/kg), LD-T2 (low spec diet + enzyme complex 1 g/kg). Feed and water were provided ad libitum for 42 days, during which time feed intake and body weight were measured at one-week intervals. After the feeding trial, chickens were slaughtered by exsanguination and samples were collected. Feed intake was lower in the enzyme supplemented groups than the non-supplemented groups (p<0.05), as were body weight and gain (p<0.05). Thus, the feed conversion ratio improved in the enzyme supplemented groups relative to the non-supplemented groups (p<0.05). The carcass rate and production index were also significantly improved by supplementation with enzyme complex (p<0.05). Finally, the thiobarbituric acid reactive substances (TBARS) values were lower in the enzyme supplementation groups after 6 storage days (p<0.05). In conclusion, dietary supplementation with enzyme complex including metalloprotease and xylanase improved growth performance, carcass characteristics, and storability of broiler chicken meat.
Keywords
Metalloprotease; Xylanase; Growth performance; Meat storability; Broiler chickens;
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