Ossification Hindlimb - Anatomy & Physiology

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Ilium

Species	Appearance	Fusion
Horse	2nd month of pregnancy	10-12 months after birth
Cow	2nd month of pregnancy	7-10 months after birth
Pig	7th week of pregnancy	1st year after birth
Dog	4th week of pregnancy	6 months after birth
Cat	4th week of pregnancy	6 months after birth

Ischium

Species	Appearance	Fusion
Horse	3nd month of pregnancy	10-12 months after birth
Cow	3nd month of pregnancy	7-10 months after birth
Pig	2nd month of pregnancy	1st year after birth
Dog	5th week of pregnancy	6 months after birth
Cat	5th week of pregnancy	6 months after birth

Pubis

Species	Appearance	Fusion
Horse	5th-6th month of pregnancy	10-12 months after birth
Cow	4-5th month of pregnancy	7-10 months after birth
Pig	2nd month of pregnancy	1st year after birth
Dog	5th week of pregnancy	6 months after birth
Cat	5th week of pregnancy	6 months after birth

Femur

Species	Appearance of diaphysis nucleus	Appearance of femoral head	Appearance of greater trochanter	Appearance of lesser trochanter	Appearence in distal epiphysis	Fusion in proximal epiphysis	Fusion in distal epipysis
Horse	2nd month of pregnancy	7th month of pregnancy	9th month of pregnancy	12th month of pregnancy	6th month of pregnancy	3 years	3 and half years
Cow	2nd month of pregnancy	7th month of pregnancy	11th-12th month of pregnancy	6th month of pregnancy	3years	3 and half years
Pig	6th week of pregnancy	10th week of pregnancy	just before birth	just before birth	just before birth	3 years	3 and half years
Carnivores	4th week of pregnancy	3-4 weeks after birth	5 weeks after birth	5 weeks after birth	3 weeks after birth	1-1 and half years	1-1 and half years

Tibia

Species	Appearance of diaphysis nucleus	Appearance of proximal condyle	Appearance of tibial tuberosity	Appearance of distal tibia	Fusion in proximal epiphysis	Fusion in distal epipysis
Horse	2nd month of pregnancy	7th month of pregnancy	9th month of pregnancy	9th month of pregnancy	3 and half years	2 years
Cow	2nd month of pregnancy	6th-7th month of pregnancy	9th month of pregnancy	7th-8th month of pregnancy	3 and half to 4 years	2 to 2 and half years
Pig	2nd month of pregnancy	just before birth	just after birth	just before birth	3 and half years	2 years
Carnivores	4th week of pregnancy	3-4 weeks after birth	a few weeks after birth	1 month after birth	12 months	12-13 months