A few days ago one of my girls hatched 4 ducklings. They were all doing well until today when I noticed one with a limp. As far as I can tell, it injured it's foot or ankle but it does not appear to be broken. I brought it inside and isolated it from the flock. I have treated an adult with similar symptoms by isolating it w/ a partner and treating it with Epsom salt baths and duramycin. Is this also the proper thing to do with a duckling who is only 3 days old? If so, does anyone know of the proper dosage of duramycin for a duck so young?