Changes

==Growth Rates==

==Growth Rates==

* After hatching, the conceptus undergoes massive growth.

 

** Cow: Blastocyst is 3mm in diameter at day 13 of gestation, enlarges to 250mm in length (elongation) day 14-16 and appears as a fillamentous thread. By day 18 of gestation, the blastocyst occupies space in both uterine horns.

After hatching, the conceptus undergoes massive growth.  

** Pig: Blastocysts are 2mm spheres at day 10 of gestation. During the next 24-48 hours, they elongate to ~200mm in length. By day 16, the blastocyst reaches lengths of 800-1000mm.

 

'''Cow''': The blastocyst is 3mm in diameter at day 13 of gestation and enlarges to 250mm in length (elongation) between day 14-16 and appears as a fillamentous thread. By day 18 of gestation, the blastocyst occupies space in both uterine horns.

 

'''Pig''': The blastocysts are 2mm spheres at day 10 of gestation. During the next 24-48 hours, they elongate to ~200mm in length. By day 16, the blastocyst reaches lengths of 800-1000mm.

==Pre-attachment period==

==Pre-attachment period==