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Abstract In order to evaluate the effect of storage periods on the quality of compound feed for soft-shelled turtle (Pelodiscus sinensis) at room temperature, the feed samples were collected at 0, 7, 14, 28, 35, 45 and 60 d, respectively. The feed quality was evaluated by the indexes, including moisture, crude protein, crude fat and volatile salt-based nitrogen (TVB-N), and their changes with storage periods were analyzed, so as to determine the optimal storage period of compound feed for Pelodiscus sinensis. The results showed that there was no significant difference in crude protein content among the groups within 0-35 d of storage. However, the crude fat content decreased significantly after 28 d compared with that of the control group (0 d). The moisture in the diet of soft-shelled turtle decreased at first and then increased after 28 d of storage, which was significantly higher than that of the control group(0 d). The content of volatile basic nitrogen increased rapidly after 28 d of storage, and the difference was significant. According to the standard of sensory index, the appearance of the feed was normal within 45 d after storage under this experimental conditions. The smell of the feed changed, and the smell gradually faded with a musty smell from 35 d. The results showed that the quality of feed for Chinese soft-shelled turtle did not change significantly during storage 0-28 d. This study provided reference data for the storage of Chinese soft-shelled turtle formula feed.
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Received: 15 February 2023
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2022, Vol. 35 
