Prophylactic Effects of Polysavone on Fatty Liver Hemorrhagic Syndrome of Laying Hens in Late-Phase

GAO Yuanyuan; YANG Changjin; DONG Xiaofang; TONG Jianming; GAO Yupeng

doi:10.3969/j.issn.1006-267x.2016.10.017

Chinese Journal of Animal Nutrition >

2016 , Vol. 28 >Issue 10: 3153 - 3160

DOI: https://doi.org/10.3969/j.issn.1006-267x.2016.10.017

FEED SCIENCE AND TECHNOLOGY

Prophylactic Effects of Polysavone on Fatty Liver Hemorrhagic Syndrome of Laying Hens in Late-Phase

GAO Yuanyuan ,
YANG Changjin ,
DONG Xiaofang ,
TONG Jianming ,
GAO Yupeng

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

Received date: 2016-04-11

Online published: 2016-10-17

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Abstract

This experiment was conducted to investigate the prophylactic effects of polysavone (alfalfa extract) on fatty liver hemorrhagic syndrome (FLHS) of laying hens in late-phase. A total of 1 008 Jinghong No. 1 laying hens aged 500 days were randomly divided into 7 groups, with 6 replicates per group and 24 hens per replicate. Hens in group Ⅰ (control group) were fed a common diet (metabolic energy 11.10 MJ/kg; crude protein 17.68%), while hens in groups Ⅱ, Ⅲ, Ⅳ, Ⅴ, Ⅵ and Ⅶ (experimental groups) were fed high-energy and low-protein diets (metabolic energy 12.87 MJ/kg; crude protein 13.84%) supplemented with 0, 200, 400, 600, 800, 1 000 mg/kg ploysavone, respectively. The experiment lasted for 60 days. The results were as follows:1) compared with the control group, feeding a high-energy and low-protein diet without polysavone for 30 days induced FLHS, at the 1 to 30 days, the average daily feed intake (ADFI), laying rate, egg weight and egg mass were significantly decreased (P<0.05), and the ratio of feed to egg was significantly increased (P<0.05), and at the 1 to 60 days, the trend was more obvious (P<0.05); at the 42 days, the albumen height and Haugh unit were significantly decreased (P<0.05). 2) Adding different gradients of ploysavone in high-energy low-protein diet could decrease the incidence rate of FLHS; increase the ADFI, laying rate, egg mass at the 1 to 60 days, decrease the ratio of feed to egg; increase albumen height and haugh unit at the 42 days. In conclusion, high-energy low-protein diet can induce FLHS in laying hens, while supplement of ploysavone can prevent the induction of FLHS.

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

Cite this article

GAO Yuanyuan , YANG Changjin , DONG Xiaofang , TONG Jianming , GAO Yupeng . Prophylactic Effects of Polysavone on Fatty Liver Hemorrhagic Syndrome of Laying Hens in Late-Phase[J]. Chinese Journal of Animal Nutrition, 2016 , 28(10) : 3153 -3160 . DOI: 10.3969/j.issn.1006-267x.2016.10.017

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