Prophylactic Effect of Polysavone on Fatty Liver Hemorrhagic Syndrome in Laying Hens

YANG Changjin; DONG Xiaofang; TONG Jianming; GAO Yupeng

doi:10.3969/j.issn.1006-267x.2015.07.024

Chinese Journal of Animal Nutrition >

2015 , Vol. 27 >Issue 7: 2184 - 2192

DOI: https://doi.org/10.3969/j.issn.1006-267x.2015.07.024

Molecular Nutrition

Prophylactic Effect of Polysavone on Fatty Liver Hemorrhagic Syndrome in Laying Hens

YANG Changjin ,
DONG Xiaofang ,
TONG Jianming ,
GAO Yupeng

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1. College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China;
2. Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China

Received date: 2015-02-04

Online published: 2015-07-07

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Abstract

This experiment was conducted to investigate prophylactic effects of polysavone (alfalfa extract) on fatty liver hemorrhagic syndrome (FLHS) in laying hens. Fifty Jinghong 1 laying hens aged 266 days were randomly divided into 5 groups, with 5 replicates per group and 2 hens per replicate. Hens in group Ⅰ were fed on a basal diet, while hens in groups Ⅱ, Ⅲ, Ⅳ, Ⅴ were fed on high-energy low-protein diets supplemented with 0, 200, 600, 1 000 mg/kg Ploysavone, respectively. The experiment lasted for 60 days. The results showed as follows: 1) compared with group Ⅰ, the average daily feed intake (ADFI) in group Ⅱ was significantly decreased during 1 to 60 d (P<0.05), while the ratio of feed to egg in group Ⅱ was significantly increased during the first 30 d (P<0.05), as well as the triglyceride (TG) content in yolk in group Ⅱ on day 14 (P<0.05). Furthermore, laying hens in group Ⅱ showed the pathological characteristics of FLHS on day 30 and had higher incidence of FLHS on day 60 than group Ⅰ. 2) Compared with group Ⅱ, on day 30, the liver fat rate in group Ⅲ, the liver hemorrhagic index and liver fat rate in groups Ⅳ and Ⅴ were significantly decreased (P<0.05). In addition, the incidence rate of FLHS in group Ⅲ showed a decrease of 33.3% than group Ⅱ and no FLHS was found in groups Ⅳ and Ⅴ. Moreover, compared with group Ⅱ, the incidence of FLHS in group Ⅴ was decreased by 50.0% on day 60. 3) Compared with group Ⅱ, the ratio of feed to egg in group Ⅳ was significantly decreased during the first 30 d (P<0.05), as well as the TG content in yolk on days 14, 28 and 56 in groups Ⅲ, Ⅳ and Ⅴ (P<0.05). Also, the total lipids content in yolk on days 28 and 56 in group Ⅴ was significantly decreased (P<0.05), and the TG content in yolk on day 42 in group Ⅳ was significantly decreased (P<0.05). In conclusion, on day 30, different doses of Ploysavone can prevent FLHS in laying hens which are fed high-energy low-protein diet. Furthermore, on day 60, the incidence of FLHS in group Ⅴ is decreased by 50.0%.

Key words： polysavone; laying hens; fatty liver hemorrhagic syndrome

Cite this article

YANG Changjin , DONG Xiaofang , TONG Jianming , GAO Yupeng . Prophylactic Effect of Polysavone on Fatty Liver Hemorrhagic Syndrome in Laying Hens[J]. Chinese Journal of Animal Nutrition, 2015 , 27(7) : 2184 -2192 . DOI: 10.3969/j.issn.1006-267x.2015.07.024

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