Publicity hound Alec Baldwin injected himself back into animal activists’ battle against Radio City Music Hall’s iconic Christmas Spectacular — blasting the venue’s use of live animals for Nativity scenes in a new TV spot.

The “30 Rock” star’s latest shot against the decades-old practice came in a PETA-backed ad set to air on Canada’s CTV starting Thursday. said the stage production is “highly stressful” to the show’s sheep, camels and donkeys.

“Animals are not actors or props,” Baldwin, 67, says in a 30-second spot, railing that the stage production is “highly stressful” to the show’s sheep, camels and donkeys.

Radio City is subjecting the animals “to transport, confinement in a basement for months and the stressful lights and sounds of a stage production,” Baldwin adds.

PETA protes

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