German specialty chemicals group Evonik plans to build a plant on Jurong Island to make an animal feed additive, it said in a press release on Friday.

This will be its third plant there, a company spokesman told The Business Times in an e-mail. She declined to disclose the estimated investment.

The facility will produce an amino acid for animals, called DL-methionine.

"The addition of methionine and other amino acids can significantly lower the crude protein content of animal feed," Evonik said in its statement.

The company opened an oil additives production facility on Jurong Island in 2008 and expanded that in 2015, nearly doubling its capacity.

It also opened a production complex for DL-methionine on Jurong Island in 2014, in which the spokesman said Evonik invested over 500 million euros (S$800 million).