Page 13 - Woodbank Matariki 2021 Catalogue ebook

HDT Index (heifer/dairy terminal)

New Zealand Angus Heifer/Dairy Terminal Index - Predicted Response

Expected Change in Individual Traits

CEd CEm GL BW 200W 400W 600W MCW Milk SS DC Cwt EMA Rib Rump RBY IMF

Above the 0 line (X axis) selects for more positive numbers and below the line selects for more negative numbers.
For some traits (e.g. growth), a positive response is desirable and for others (e.g. days to calving), a negative
response is desirable.
This index is primarily driven by getting live calves on the ground, and producing an early maturing
prime animal with added carcase traits for improved carcase yield and marbling with no direct selection
for maternal traits.
NB. It is important point to be aware that while no emphasis has been placed on some traits,
for example maternal traits in the HDT, they still may be selected for indirectly through positive
or negative correlations with other traits, as is the case with Days to Calving in the HDT.

Woodbank Angus & Matariki Herefords Bull Sale 2021 11