The best reference on Vit K probably is from Nutrition and Lactation,
     from the Institue of Medicine, published in 1991.  It says:  "The
     vitamin K content of mature human milk is typically 2 micrograms, and
     that of colostrum is approximately twice as high.  When mothers with
     low vitamin K intakes are given 20-mg supplements of vitamin K in the
     form of phylloquininone, milk levels of the vitamin are increased by
     twofold for at least 48 hours.  However, even when the mother's
     vitamin K intake from food has been high or she has routinely taken
     supplements containing viatmin K, the amout of this vitamin obtained
     by the breastfed neonate in the first few days after birth may be
     insufficient to meet the infant's needs."


     I hope this helps.