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http://dx.doi.org/10.7852/jses.2012.50.2.150

Effects of Dietary Supplementation of Mulberry Leaves and Silkworm Excreta Extracts on Weight Performance, Blood Characteristics and Cecal Microflorae of Chicks  

Han, Sang-Hoon (National Academy of Agricultural Science, R.D.A)
Kim, Dong Wook (National Institute of Animal Science, R.D.A)
Ji, Sang Yoon (National Institute of Animal Science, R.D.A)
Hong, Seong Koo (National Institute of Animal Science, R.D.A)
Kim, Sang-Ho (National Institute of Animal Science, R.D.A)
Lee, Heui-Sam (National Academy of Agricultural Science, R.D.A)
Publication Information
Journal of Sericultural and Entomological Science / v.50, no.2, 2012 , pp. 150-160 More about this Journal
Abstract
The object of this study was to evaluate the effects of dietary supplementation of mulberry leaves and silkworm excreta ethanol extracts on weight performances, blood characteristics, cecal microflorae of chickens. Two hundred forty male broiler chicks(Ross) were fed diets for five weeks containing 0.1%(MLA) and 1%(MLB) of mulberry leaves ethanol extracts, and 0.1%(SEA) and 1%(SEB) of silkworm excreta ethanol extracts. Weight performance did show no significant difference in all test groups which were fed with supplementation of mulberry leaves and silkworm excreta ethanol extracts. They showed better weight gain and feed conversion than the negative control group which was fed only with forage without antibiotics. ABTS(2'-azine-bis[3-ethylbenzothiazoline-6-sulfonic acid]) test was conducted to investigate free radical scavenging activity of blood in tested groups. ABTS scavenging activities of tested groups were higher than control groups in significant level, though there was no significant difference(P = 0.396). Specifically, MLB group showed the highest scavenging activity. Blood-level concentration of MDA, which is an indicator of lipid peroxidation, was also decreased in tested groups and the lowest level was observed in SEA(P = 0.001). As storage time increased at $4^{\circ}C$, muscle-level MDA concentrations of all tested groups were generally increased and significant difference was obsereved between tested groups and controls in total increase of MDA concentration($P=4.417{\times}10^{-3}$). In cecal microflorae, SEA and SEB showed decreased total microbe population compared to NC($P=6.462{\times}10^{-5}$) and even to PC. Supplementation of mulberry leave and silkworm excreta ethanol extract did show a similar inhibition effect against Salmonella sp., furthermore, MLB did enhanced the growth of Lactobacillus sp.($P=3.636{\times}10^{-7}$). In summary, ethanol extract of silkworm excreta may be a potential alternative of antibiotics for chicks. In addition, both of ethanol extracts supplementation to broiler chicks would be very useful not only to improve antioxidant effect of blood but also to suppress lipid peroxidation without any loss of weight performance in poultry farming.
Keywords
Mulberry leaves; Silkworm excreta; Dietary supplementation; Weight performance; Blood characteristics; Cecal microflora;
Citations & Related Records
Times Cited By KSCI : 15  (Citation Analysis)
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