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Asian-Australas J Anim Sci > Accepted Articles
DOI: https://doi.org/10.5713/ajas.20.0116    [Accepted] Published online May 12, 2020.
Production performances and antioxidant activities of laying hens fed Aspergillus oryzae and phytase co-fermented wheat bran
Chung Ming Huang1,5  , Wen Yang Chuang1,5  , Wei Chih Lin1,5  , Li Jun Lin2,5  , Shang Chang Chang3  , Tzu Tai Lee1,4,* 
1Department of Animal Science, National Chung Hsing University, Taichung, 402, Taiwan
2School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, 404, Taiwan
3Kaohsiung Animal Propagation Station, Livestock Research Institute, Council of Agriculture, 912, Taiwan
4The iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung, 402, Taiwan
Correspondence:  Tzu Tai Lee, Tel: +886-4-22840366, Fax: +886-4-22840265, Email: ttlee@dragon.nchu.edu.tw
Received: 22 February 2020   • Revised: 25 March 2020   • Accepted: 29 April 2020
Wheat bran (WB) was co-fermented with Aspergillus oryzae and phytase to determine whether co-fermentation improve wheat bran phosphorus and fiber utilization in Isa-brown layers.
A total of 112 Isa brown layer were randomly divided into 7 treatments with 8 replicates per a treatment and 2 hens per a replicate. The treatments included basal diet (Control), basal diet supplemented with 250 unit/kg phytase (Control+Phy), diet with 10% WB (10% WB), diet with 5% WB and 250 unit/kg phytase (5% WB+Phy) diet with 10% WB and 250 unit/kg phytase (10% WB+Phy), diet with 5% PCFWH and 125 unit/kg phytase (5% PCFWH), and diet with 10% PCFWH (10% PCFWH). The intestinal microbial population, intestinal morphology, serum antioxidant enzyme activities, and excreta phosphorus content were assessed.
In PCFWH, spore counts, protease activity, xylanase activity, and ferulic acid were 8.50 log/g DM, 190 unit/g DM, 120 unit/g DM, and 127 μg/g, respectively. Xylobiose and xylotriose were released in PCFWH, while they were not detectable in WB. Antioxidant capacity was also enhanced in PCFWH compared to WB. The 10% WB+Phy and 10% PCFWH groups produced higher egg mass, but hens fed 5% WB+Phy had the lowest amount of feed intake. Eggs from 10% PCFWH had better eggshell weight, eggshell strength, and eggshell thickness. Birds fed with 10% PCFWH also had higher serum superoxide dismutase (SOD) and catalase (CAT) activities. Compare to control, 10% PCFWH significantly reduced excreta phosphorus content.
10 % PCFWH in diet improved egg quality, antioxidant status, and excreta phosphorus content of laying hens.
Keywords: Phytase; Aspergillus oryzae; Co-fermentation; Antioxidant; Hen
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