关键词: 高温高湿环境, 非灭菌性垫料, 卫生指标

Abstract: Objective　To investigate the impact of different storage durations in a high temperature and high humidity environment on the hygienic indicators (microbial indicators and chemical pollutant indicators) of non-sterilized poplar wood shavings bedding,and to provide scientific data for temperature and humidity regulation as well as quality control during the bedding storage.Methods　Non-sterilized poplar wood shavings bedding was randomly divided into Group A, Group B, and Group C. Samples were collected at 0 d, 7 d, 14 d, 21 d, and 28 d respectively to detect their microbial indicators and chemical pollutant indicators.Results　There were significant differences in temperature and humidity among the three groups of storage environments. During the 0 d to 28 d storage period, the mold and yeast indicators of the bedding from three groups failed to meet the qualified standards.At 14 d, the Escherichia coli indicators of Group A and Group B were unqualified.At 21 d and 28 d, the Escherichia coli indicators of all three groups were unqualified.Conclusion　High temperature and high humidity environment has a significant negative impact on the microbial indicators of non-sterilized bedding. The result of this study can provide important references for bedding production and use units in aspects such as the site selection of storage warehouses, the setting of storage environment parameters, and the construction of quality control systems.

Key words: high temperature and high humidity environment, non-sterilized bedding, hygienic indicators