Feed Science and Technology

Effects of Oxidized Fish Oil on Performance, Egg Quality and Serum Antioxidant Indexes of Laying Hens

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  • 1. Institute of Animal Science and Technology, State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing 100193, China.;
    2. Tie qi li shi group, Mianyang 621006, China

Received date: 2011-09-23

  Online published: 2012-02-07

Abstract

This experiment was conducted to evaluate the effects of oxidized fish oil on performance, egg quality and serum antioxidant indexes of laying hens. Seven hundred and twenty 38-week-old healthy Hy-line gray laying hens were randomly divided into 4 groups with 6 replicates per group and 30 layers in each replicate. Laying hens in the control group were fed a corn-soybean based diet with 2% fresh fish oil (FFO group) and the others in three experiment groups were fed the basal diet supplemented with 0.25% (OFO1 group), 0.50% (OFO2 group) and 1.00% (OFO3 group) oxidized fish oil (peroxide value, POV=1 200.10 meq O2/kg), respectively. The experiment lasted for 4 weeks. The results showed that oxidized fish oil supplementation significantly decreased the average egg weight of laying hens (P<0.05). Compared with the FFO group, average egg weight in OFO1, OFO2 and OFO3 groups were decreased by 0.9%, 0.9% and 1.7% (P<0.05), respectively. Yolk color and Haugh unit of eggs were obviously decreased by oxidized fish oil (P<0.05), but there were no obvious effects on egg shell color by oxidized fish oil. Compared with the FFO group, glutathione peroxidase activity significantly decreased and malondialdehyde content significantly increased in serum of laying hens of OFO3 group (P<0.05). In conclusion, oxidized fish oil in diets can influence performance, egg quality and serum antioxidant indexes of laying hens to a certain extent.

Cite this article

ZHOU Jianchuan, ZHAO Lihong, HUANG Wei, FENG Guangde, JI Cheng, MA Qiugang . Effects of Oxidized Fish Oil on Performance, Egg Quality and Serum Antioxidant Indexes of Laying Hens[J]. Chinese Journal of Animal Nutrition, 2012 , 24(2) : 301 -306 . DOI: 10.3969/j.issn.1006-267x.2012.02.016

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