"蓄有山羊胡须的" can be translated into English as "with a goatee" or "having a goatee".
For example:
He is a man with a goatee.（他是一个蓄有山羊胡须的男人。）
The artist is known for his distinctive look, having a goatee.（这位艺术家以他蓄有山羊胡须的独特造型而闻名。）