2725
Sprague Dawley rats were randomly divided into four groups ; each received a diet containing 0 % , 2 . 5 % , 3 . 75 % and 5 . 0 % ( w / w ) rice hull fiber for 90days .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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