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Insights: Breeding Stock

How birth rates are calculated and what stock classes are considered breeding stock in Insights

Renee avatar
Written by Renee
Updated over a year ago

Birthing rates are a key metric produced in the Insights Production Summary.

This measures the offspring produced by available breeding stock. It is represented as a percentage with the formula of offspring ÷ breeding stock x 100

For example, if you farmed beef cattle, and had 134 calves born to 100 cows one spring, you would have a calving rate of 134%

The birth rate can be calculated at a farm level from a user’s production trackers.

The above image shows 380 births are forecast in the 2025 season. These will be divided by the breeding stock classes specified in the tracker settings:

MA Cows + R2 Heifers (457)

380 ÷ 457 x 100 = 83.15

The births specified in a farm’s tracker flow through to Insights, alongside the opening quantities which are used to calculate breeding rates.

However, instead of taking a specific farm’s settings into account to define what is breeding stock, Insights pre-defines breeding classes. This is to allow for appropriate averaging at the organisational level.

The list of set breeding classes per stock type are:

  • Sheep (NZ + AU)

    • 5yr Ewes

    • MA Ewes

    • Two tooth Ewes

    • Ewe hoggets

  • Sheep (UK)

    • Breeding Ewes

    • Ewe Hoggets/hoggs

    • Four year ewes

    • MA Ewes

  • Dairy Cattle (NZ + AU)

    • R2 Heifer

    • MA Cows

  • Dairy Cattle (UK)

    • Dairy Cows

    • 18-24 month heifers

    • 24+ month heifers

    • Dairy suckler cows

  • Deer (NZ + AU)

    • MA Hinds

    • R2 Hinds

  • Deer (UK)

    • Female Deer

  • Beef Cattle (NZ + AU)

    • R2 Heifer

    • R3 Heifer

    • MA Cows

  • Beef Cattle (UK)

    • 12-18 month Heifers

    • 18-24 month Heifers

    • Breeding cows

    • Suckler Cows

Insights will calculate birth rates based on opening quantities of the stock classes listed above, and the births entered within the Insights date range selected.

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