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Abstract
1. Potato pulp is the industrial waste produced during starch extraction from potatoes. Its discharge has become an environmental pollution problem and a decisive cost factor due to stricter environmental legislation and associated expense in the potato starch industry.
2. To date, little information has been provided regarding the nutritive value and any possible toxic effects of potato pulp for poultry feed.
3. In the present paper, a model was developed to assess potato pulp for use as a new poultry feed, which will help starch factories to decrease waste discharge.
4. First, a solid-state fermentation technique to change potato pulp to poultry feed is briefly described; then, the major nutrient compositions of this feed are analysed; lastly, related toxicological effects are studied and the safety of the feed assessed.
5. The results indicated that no unintended effects were found on layer quails during a 30-d feeding study, and the new feed initially showed its safety for poultry in our assessment procedure. However, additional work on limiting nutrients analysis, appetite depressant effects, and egg-laying in a large-scale experiment is required to further establish the findings.
Acknowledgements
This research was financed by the scientific research priming plan for young teachers, Qiqihar University. The authors sincerely thank the Second Hospital of Qiqihar Medical College for their technical assistance and Peng Liu, Jiadong Liu, Donglan Wan, Shixue Chen, Xiaohong Sun and Junli Yang for their selfless help.