2103
The dynamics of protozoa were studied in two groups of rumen - fistulated cattle fed on a basal diet of molasses ad lib . , with oaten chaff given at 6 or 18 g / kg live weight .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
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