Heifers

ridger

Member

Location

Tyrone, Northern Ireland

• Jul 31, 2014

• #1

Have 6 heifer calves in a field with bull calves, currently all are 4 to 5 months old. When do the heifers start cycling, or when would they need took out?

 

Davy_g

Member

Livestock Farmer

Location

Co Down

• Aug 1, 2014

• #2

What breeding are they?
Some x heifers are cycling at 6 months.

If you are checking them daily you could separate when cycling and estrumate for peace of mind. Not sure at what age the bull calves are mature enough to perform at though.

 

Henarar

Member

Livestock Farmer

Location

Somerset

• Aug 1, 2014

• #3

We had one get in calf at four months
As above I don't know when the bulls will work but I wouldn't want them together
Estrumate is not 100% anyway

 

ridger

Member

Location

Tyrone, Northern Ireland

• Aug 1, 2014

• #4

Parthenaise x Friesan they are. I feed them every day and haven't seen anything yet, but just wondering.

 

choochter

Member

Location

aberdeenshire

• Aug 1, 2014

• #5

I had a bull got 3 cows in calf when he was 10 months old, and it was definitely him.

 

GenuineRisk

Member

Location

Somerset

• Aug 1, 2014

• #6

Estrumate will mostly work but you need to consider doing it twice, four weeks apart because if you do it and heifer has just been jumped, it may not be effective. We bought a 'maiden' heifer at the Sales which turned out to be in calf - whole pen had been estrumate but working back, she had obviously just been bulling and jumped.

 

simgirl

Member

Location

West Wales

• Aug 1, 2014

• #7

When we separate our calves we wait 4-6 wks before estrumating all the heifers.

 

ridger

Member

Location

Tyrone, Northern Ireland

• Aug 1, 2014

• #8

simgirl said:

When we separate our calves we wait 4-6 wks before estrumating all the heifers.

Click to expand...

What age would they be when u separate?

 

Henarar

Member

Livestock Farmer

Location

Somerset

• Aug 1, 2014

• #9

GenuineRisk said:

Estrumate will mostly work but you need to consider doing it twice, four weeks apart because if you do it and heifer has just been jumped, it may not be effective. We bought a 'maiden' heifer at the Sales which turned out to be in calf - whole pen had been estrumate but working back, she had obviously just been bulling and jumped.

Click to expand...

There is a max time that it will work as well but i can't remember what it is
I was told by the vet that it would work after two weeks

 

Willy A

Member

Location

Co Down

• Aug 1, 2014

• #10

http://www.msd-animal-health.co.uk/products_public/estrumate/product_data_sheet.aspx
Works up to 150 days. Best up to 100 days.
I had SIM X AA heifers bulling at 4 months old last year. One got ruptured by the bull.
Bull calves would probably need to be a bit older to perform, but were there's a willy there's a way.
I separated waited 4 weeks and used Estrumate. All ok.

 

mb86

Member

Location

Barnard Castle

• Aug 3, 2014

• #11

We had one that must have been bulled at 4 months, she was in with similar aged bull calves, didn't know about it till it started to bag up! Still got her in her 7th lactation!