Lamb-and-sausage Couscous

• 6 spicy sausages
• 4 carrots
• 3 lamb shoulder
• 2 celery stalks (cut into)
• 2 zucchini rounds (cut into)
• 1 onion
• 1/2 in rounds
• 1,400 ml low-sodium chicken broth
• 230 gr couscous
• 240 ml dry wine (white)