Molecular Nutrition

Effects of Bacillus coagulans on Performance, Egg Quality and Plasma Biochemical Parameters of Laying Hens Infected with Salmonella

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  • State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing 100193, China

Received date: 2017-06-15

  Online published: 2017-12-04

Abstract

This study was conducted to evaluate the effects of Bacillus coagulans on performance, egg quality of laying hens before and after Salmonella infection, and to study the effects of Bacillus coagulans on plasma biochemical indices of laying hens after Salmonella infection. A total of 400 Salmonella negative, healthy Jinghong laying hens with similar laying rate (P>0.05) were randomly divided into 4 groups (groups A, B, C and D) with 5 replicates per group and 20 birds per replicate. The control group (groups A and C) was fed a basal diet, and the Bacillus coagulans group (groups B and D) was fed the basal diet supplemented with 2.5×1010 CFU/kg Bacillus coagulans. After 1 week, groups C and D were taken orally quantitative Salmonella enterica serovar Enteritidis suspension (1×108 CFU/mL) two days in a row, groups A and B were taken orally the same amount of sterile phosphate buffer saline (PBS), kept feeding for 3 weeks. The results showed as follows:1) before Salmonella infection, Bacillus coagulans had no significant effect on performance of laying hens (P>0.05). After Salmonella infection, Salmonella significantly decreased the average daily feed intake (P<0.05); Bacillus coagulans significantly decreased the feed to egg ratio (P<0.01), and significantly decreased the average daily feed intake (P<0.05). 2) Before Salmonella infection, Bacillus coagulans significantly increased the eggshell weight/egg weight (P<0.01). After Salmonella infection, Salmonella and Bacillus coagulans had no significant effects on egg quality indices (P>0.05). 3) After Salmonella infection, Bacillus coagulans significantly reduced the contents of total cholesterol and triglyceride in plasma (P<0.05); Salmonella significantly reduced the contents of total cholesterol, triglyceride and calcium in plasma (P<0.05), and significantly increased the plasma glutamic-oxalacetic transaminase activity (P<0.05); Bacillus coagulans and Salmonella had significant interaction on total protein content, calcium/phosphorus and glutamic-oxalacetic transaminase activity in plasma (P<0.05). It is concluded that Bacillus coagulans can improve the performance and egg quality of laying hens, also has a certain degree of improvement in the protein metabolism, lipid metabolism, liver function and absorption of calcium and phosphorus.

Cite this article

HUANG Shimeng, HUANG Churan, ZHAO Lihong, ZHANG Jianyun, JI Cheng, MA Qiugang . Effects of Bacillus coagulans on Performance, Egg Quality and Plasma Biochemical Parameters of Laying Hens Infected with Salmonella[J]. Chinese Journal of Animal Nutrition, 2017 , 29(12) : 4534 -4541 . DOI: 10.3969/j.issn.1006-267x.2017.12.035

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