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Macrolide
Species
Withdrawal Time (days)
Milk Discard Time (hr)
Erythromycin
Cattle
14
36–72
Pigs
7
Tylosin
21
96
Tilmicosin
28
0
Tulathromycin
18
Swine
5
Gamithromycin
63a
a EU withdrawal; withdrawal period for USA (35 days) pending; withdrawal period for Canada is 49 days.