ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2013, Vol. 44 ›› Issue (12): 1939-1945.doi: 10.11843/j.issn.0366-6964.2013.12.012

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Effects of Dietary Polysaccharides from the Submerged Fermentation Extract of Hericium caput-medusae (Bull.:Fr.) Pers. on Cholesterol Deposition in Broilers

SHANG Hong-mei1,2，SONG Hui1,3*，YAO Xu1，SHEN Si-jie1，WANG Li-na1，WU Bo1，JIANG Yun-yao1，DING Guo-dong1   

  1. （1.School of Life Sciences，Jilin Agricultural University，Changchun 130118, China；2.College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China；3.Engineering Research Center of Ministry of Education for Edible and Medicinal Fungi, Changchun 130118, China）
  • Received:2013-04-10 Online:2013-12-23 Published:2013-12-23

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Abstract:

This experiment was conducted to study the effects of dietary polysaccharides from the submerged fermentation extract of Hericium caput-medusae (Bull.:Fr.) Pers. (HFP) on the contents of cholesterol in serum, muscles, liver, heart, muscular stomach, excreta of broilers. A total of 240 one-day-old AA broilers were divided randomly into 4 groups with 3 replicates of 20 broilers each, and fed diets containing four concentrations of HFP (0, 0.1%, 0.3% and 0.5%) during the 42 days study. The results showed that, compared with control group, at different age stages (day 14, 28 and 42), dietary supplementation of HFP at the levels of 0.3% and 0.5% significantly decreased serum total cholesterol and low density lipoprotein cholesterol contents(P＜0.05), and significantly increased serum high density lipoprotein cholesterol content of broilers compared to the control group(P＜0.05). Cholesterol levels of breast muscle, thigh muscle and liver were significantly reduced in the broilers fed with 0.3% and 0.5% of HFP than those in control group (P＜0.05), and cholesterol content of muscular stomach was lower in the broilers fed with 0.5% of HFP compared to control group(P＜0.05). Dietary supplementation of HFP had no significantly effect on cholesterol content of broilers′ heart (P＞0.05). Compared with the control group, supplementation with HFP at different levels significantly increased bile acid excretion in feces of broilers(P＜0.05), and cholesterol contents of excreta were also higher in the broilers fed with 0.3% and 0.5% of HFP compared to the control group(P＜0.05). The results of this study suggest that the decreased contents of cholesterol in muscles, liver and muscular stomach of broilers may be caused by an increase in the fecal excretion of cholesterol and bile acid.

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