The trailer was heading eastbound when it caught fire near milepost 8.1 in Knowlton Township around 12:05 a.m. on Tuesday, Feb. 8, NJSP Trooper Brandi Slota told DailyVoice.com.
The driver was able to unhook the tractor from the trailer and was not hurt, authorities said.
It was not immediately clear how many chickens were killed, Slota said.
The cause of the fire remained under investigation.
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