Effects of Bacterial Peptide Protein on Performance, Egg Quality, Serum Biochemical Parameters and Intestinal Bacteria Flora Number of Laying Hens

QI Mingxing; MIAO Liping; HE Qiang; LI Junming; CAI Xiangmin; ZOU Xiaoting

doi:10.3969/j.issn.1006-267x.2015.12.029

2015 , Vol. 27 >Issue 12: 3878 - 3886

DOI: https://doi.org/10.3969/j.issn.1006-267x.2015.12.029

SHORT COMMUNICATIONS

Effects of Bacterial Peptide Protein on Performance, Egg Quality, Serum Biochemical Parameters and Intestinal Bacteria Flora Number of Laying Hens

QI Mingxing ,
MIAO Liping ,
HE Qiang ,
LI Junming ,
CAI Xiangmin ,
ZOU Xiaoting

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1. Key Laboratory of Animal Nutrition and Feed Science of Agriculture, Feed Science Institute, Zhejiang University, Hangzhou 310058, China;
2. Zhejiang Cheng Yuan Biotechnology Co., Ltd., Hangzhou 310013, China

Received date: 2015-06-29

Online published: 2015-12-14

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Abstract

This study was conducted to investigate the effects of bacterial peptide protein on performance, egg quality, serum biochemical parameters and intestinal bacteria flora number of laying hens during the post-peak period(74 to 85 weeks of age). A total of 900Jinghong No. 1 laying hens(74 weeks of age) were randomly allotted to 5 groups, with 5 replicates per group and 36 hens per replicate. The control group was given a basal corn-soybean meal diet. And the experiment groups were fed basal diet with 2%, 4%, 6%, and 8% bacterial peptide protein, respectively. This trial lasted 10 weeks, including 1-week pretest period and 9-week experimental period. The results showed as follows:compared with control group, 1) dietary bacterial peptide protein supplemented significantly increased laying rate(P<0.05), while had no significant effects in feed to egg ratio, egg weight and average daily feed intake(P>0.05). 2) Albumen height, haugh unit and eggshell thickness were significantly increased by dietary bacterial peptide protein supplemented, while yolk color and eggshell strength had no response to increasing dietary bacterial peptide protein level(P>0.05). 3) Dietary bacterial peptide protein supplemented significantly increased the number of Lactobacillus and Bacillus subtilis in caecum content(P<0.05), and significantly decreased the numbers of Escherichia coli(P<0.05). 4) Dietary bacterial peptide protein supplemented significantly decreased serum urea nitrogen content(P<0.05). In conclusion, dietary bacterial peptide protein supplemented can significantly improve the performance, egg quality, and increase the number of beneficial intestinal bacteria of laying hens during the post-peak period in this study, and the optimal supplemented level of bacterial peptide protein in corn-soybean meal diet of Jinghong No. 1 laying hens(74 to 85 weeks of age) is 4%.

Key words： bacterial peptide protein; laying hens; performance; egg quality; number of bacteria flora; serum biochemical parameters

Cite this article

QI Mingxing , MIAO Liping , HE Qiang , LI Junming , CAI Xiangmin , ZOU Xiaoting . Effects of Bacterial Peptide Protein on Performance, Egg Quality, Serum Biochemical Parameters and Intestinal Bacteria Flora Number of Laying Hens[J]. Chinese Journal of Animal Nutrition, 2015 , 27(12) : 3878 -3886 . DOI: 10.3969/j.issn.1006-267x.2015.12.029

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