Hereford bull x yellow cow =black baldy calf.

[Rmc]

How does that work?

 

[Travlr]

Cow is part angus and carries black genes...

 

[RockinRB]

I would call that cow grey which would make her a diluted black.

 

[Rmc]

Cow is definitely not grey.
Angus black is supposedly dominant and therefore should not be able to be carried.
Dam of this cow is also yellow has produced black baldy when mated to Hereford.

 

[Son of Butch]

How does that work?

Neighbor's black baldy bull?
Calf obviously has black genes in the wood pile.

 

[bird dog]

Char angus cow. You can call it it whatever color you want.

 

[MurraysMutts]

The cow appears to have black feet and nose. That would explain it. Appears she's a "smokey"

 

[Allenw]

Cow is carrying a dilute gene. The boy bought an old dilute cow that had red, black, and dilute calves, her daughter has done the same thing dropping a dilute calf as her third calf.

 

[Caustic Burno]

Cow is definitely not grey.
Angus black is supposedly dominant and therefore should not be able to be carried.
Dam of this cow is also yellow has produced black baldy when mated to Hereford.

If that cow had Char and looks too her genetics don't play by the rules.

 

[Travlr]

Well we know the cow isn't half Angus because she has horns... unless she has two parents that were half angus/half horned.

 

[Lucky_P]

Only two ways this can work:
1) Cow is not yellow. She is essentially a black cow with color dilution or/and color inhibition gene altering expression of the black gene.
That, or 2) the sire is not the Hereford bull, but, rather, a black-hided 'visitor'.

Had a couple like her.. half Angus, out of a little yellow cow that was daughter of a little yellow whiteface lineback Charolais/Polled Hereford-cross cow and a red/whitefaced dilution-gene-carrier SimAngus bull. Bred to Angus bulls, they always dropped a white calf, but bred to Shorthorn, calves came out black. Other color possibilities could have come out, but that's how the genes happened to shake out on those 6-8 matings.
These girls were all but white, with black nose & hooves, and at times their hair coat took on a dingy yellow discoloration..but they were not 'yellow'.

 

[lithuanian farmer]

Cow looks like our angusx charx cows. They gave us silver, yellow and black calves from lim bulls. Curently one had a silver calf by charolais bull.

 

[Brute 23]

I agree. Cow looks like a smoke in the pic.

 

[Rmc]

Char angus cow. You can call it it whatever color you want.

Cow has neither angus or char influence. Black neighbor bull didn't happen . Sire of calf is herford bull

 

[Travlr]

Well she has something with dominant black in her background... and dilution genes as well.

 

[mwj]

Cow has neither angus or char influence. Black neighbor bull didn't happen . Sire of calf is herford bull

So what is the breeding of the cow? It will make it much easier for you to get the answer you are looking for.

 

[Warren Allison]

@Jeanne - Simme Valley , reckon his cow may be a black Simm that got the Simm dilute gene?

 

[MurraysMutts]

A hereford bull, who happens to be black?

 

[Rmc]

@Jeanne - Simme Valley , reckon his cow may be a black Simm that got the Simm dilute gene?

A hereford bull, who happens to be black?

No simm influence either.
Both the cow and calf where sired by traditional horned Hereford bulls (red not black)
Cows dam was similar in color to cow.(yellow)
That cow was the result of a solid Red Bull and a similar colored cow(yellow)

 

[Travlr]

No simm influence either.
Both the cow and calf where sired by traditional horned Hereford bulls (red not black)
Cows dam was similar in color to cow.(yellow)
That cow was the result of a solid Red Bull and a similar colored cow(yellow)

So you have at least three generations on the female side that were carriers of the black/diluted genes. There's no mystery here. Somewhere back there something was black.

Of course there is an extremely remote possibility that there is a mutation, but if I was betting the farm it would be on a passed down gene from a remote ancestor.