A guide to fetal development

[dun]

From Cornell

Bovine Developmental Milestones
Age days External Characteristics
18 Primitive streak present; amnion complete
24 Three primary brain vesicles visible; forelimb bud present
26 Fourth brachial arch and mammary ridge present; hind limb bud forming
30 Eye pits forming; eyes pigmented; hard palate forming
38 Eyelids forming; ear forming as a ridge;
40 Ear partly covers acoustic groove.
50 Eyelids partially cover eyes.
56 Palate fused.
60 Eyelids fused; external genitals differentiated; hooves forming.
76 Tactile hairs appear on face.
100 Hooves becoming firm and opaque.
110 Tooth eruption begins.
150 Lower lip and chin covered with fine hair; eyelashes present; tactile hairs
on chin; color markings appear; hooves become hard; teats well formed;
descent of testes complete.
196 Eyelid separated
230 Body fully covered with hair
278-290 Birth

 

[Victoria]

Interesting. thanks.

 

[popsjp]

Thanks for the post Dun. Looking at the list you could understand how someone misses on the preg. checks.

 

[Black and Good]

From Cornell

Bovine Developmental Milestones
Age days External Characteristics
18 Primitive streak present; amnion complete
24 Three primary brain vesicles visible; forelimb bud present
26 Fourth brachial arch and mammary ridge present; hind limb bud forming
30 Eye pits forming; eyes pigmented; hard palate forming
38 Eyelids forming; ear forming as a ridge;
40 Ear partly covers acoustic groove.
50 Eyelids partially cover eyes.
56 Palate fused.
60 Eyelids fused; external genitals differentiated; hooves forming.
76 Tactile hairs appear on face.
100 Hooves becoming firm and opaque.
110 Tooth eruption begins.
150 Lower lip and chin covered with fine hair; eyelashes present; tactile hairs
on chin; color markings appear; hooves become hard; teats well formed;
descent of testes complete.
196 Eyelid separated
230 Body fully covered with hair
278-290 Birth

Thanks dun,after investigating those twins would have been bout 250 days. Being born solid black still confuses me,cause the only bull she was ever around was my Hereford bull???

 

[sim.-ang.king]

From Cornell

Bovine Developmental Milestones
Age days External Characteristics
18 Primitive streak present; amnion complete
24 Three primary brain vesicles visible; forelimb bud present
26 Fourth brachial arch and mammary ridge present; hind limb bud forming
30 Eye pits forming; eyes pigmented; hard palate forming
38 Eyelids forming; ear forming as a ridge;
40 Ear partly covers acoustic groove.
50 Eyelids partially cover eyes.
56 Palate fused.
60 Eyelids fused; external genitals differentiated; hooves forming.
76 Tactile hairs appear on face.
100 Hooves becoming firm and opaque.
110 Tooth eruption begins.
150 Lower lip and chin covered with fine hair; eyelashes present; tactile hairs
on chin; color markings appear; hooves become hard; teats well formed;
descent of testes complete.
196 Eyelid separated
230 Body fully covered with hair
278-290 Birth

Thanks dun,after investigating those twins would have been bout 250 days. Being born solid black still confuses me,cause the only bull she was ever around was my Hereford bull???

Was she a black cow?

 

[centerfarms]

Thank you so much. I would have searched forever without finding that concise info. Appreciate your help.

 

[CKC1586]

Interesting. thanks.

Yes, thanks. Clear and concise!

 

[j&lfarms]

I like the phrase "tooth eruption". Just struck me kinda funny when I visualized an eruption of teeth.

 

[Nesikep]

I'd like to see more info between 230 days and birth... but it is good guide