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FTAI - fixed time AI

  • 16-02-2022 8:22pm
    Registered Users Posts: 1,931 ✭✭✭ Dunedin

    Just see it mentioned in another thread but didn’t want to hijack it.

    I used to do it on 18-20 month heifers. Went the full hog with cidrs and would AI at 24 and 36 hours. Would only average 60% in calf. Did it for about 5 years.

    do many do it and what kind of returns you getting.

    anyone doing it on older cows?


  • Registered Users Posts: 1,943 ✭✭✭ Who2

    Tried it for a few years but it’s bloody expensive and I couldn’t get good conception rates. A friend of mine done sixteen cows last spring, all calved plenty of time, twelve came bulling all ai’d and he had four calves out of that. He won’t be doing it again.

    i’ll often try to pull back a late calver but it’s hit and miss.

    heifers are a different story, I’d usually just estimate and ai when a bulling. I actually done a batch today to try calve down in plenty of time before Christmas.

  • Registered Users Posts: 8,239 ✭✭✭ Mooooo

    Fine with heifers, prob better to plane to ai any repeats on the first round as well as a bull may not manage if the ones that repeat cone close together

    Last year I had 56% conception to first serve, year before 76%

    Cows prob not ideal, would want records on heats to make sure they are cycling and along with lower conception rates can make it more expensive as well.

    Management tool, can mean more, condensed, work at calving and more structured work at breeding

  • Registered Users Posts: 8,496 ✭✭✭ tanko

    Is there any need to synchronise heifers with cidrs, would a shot of estrumate not bring them bulling?

  • Registered Users Posts: 8,239 ✭✭✭ Mooooo

    Some do but just to get em all served on the same day synchronising is handy. Dunno the figure but estrumate on its own will bring a certain percentage bulling.

    Generally with estrumate it's ai for a week and then estrumate anything not served and they should come in the. Cutting out the watching and serving for the week with synchronising