Donald Dube (DUE-Bay) died Sunday night while feeding his herd of domesticated deer behind his home in Saint-Leonard.
Police say the dominant buck in the herd attacked and killed the 55-year-old man with its antlers and hoofs.
Provincial game wardens later killed the buck and the other 10 deer on the family property and disposed of them in a landfill.
Anne Bull, a spokeswoman for the Natural Resources Department, says the 11 deer were killed rather than released into the wild because of the family's request.
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The government issues permits to keep some deer species in captivity, but Bull refused to say whether Dube had a permit for his herd.
Dube's family could not be reached for comment.