Yet another useful link:
http://www.thepoultrysite.com/forums/showthread.php?t=10350
Basically, these articles say that you should treat the hen with Tylan or Baytril antibiotics and feed her calcium supplements to strengthen her muscular contractions.
http://www.thepoultrysite.com/forums/showthread.php?t=10350
Basically, these articles say that you should treat the hen with Tylan or Baytril antibiotics and feed her calcium supplements to strengthen her muscular contractions.