27379
A total of 160 Ross 308 broiler chicks of 1 - day - old were procured from a commercial hatchery , divided randomly on 7th day of age into four groups with two replicates of 20 birds each and fed with basal diet ( group A ) , basal diet + CFO ( group B ) , basal diet + AF ( group C ) and CFO + basal diet + AF ( group D ) .
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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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