OUR BREEDING FLOCK
How good is the Coronga breeding flock?
Genetic Trends
Click here for Coronga's:
* Carcase Plus Index averages by year
* Lamb 2020 Index averages by year
* Weaning Weight averages by year
* Post Weaning Weight averages by year
* Post Weaning Fat averages by year
* Post Weaning Emd averages by year
* Birth Weight averages by year
and more.
Changes to LAMBPLAN ASBVs
Since the last ram selling season there have been a number of changes
implemented in the LAMBPLAN analysis for all terminal breeds. As a
result of these changes you may notice that the ASBVs reported in sale
catalogues this year show a slightly different range. It is important to note
that these changes apply to all animals in the database and generally
animals have not re-ranked. Animals that had previously ranked in the top
10% of the breed are generally still in the top 10%.
The most significant change is that Birth Weight (BWT) ASBVs have
increased, the average value has increased by 0.1 kg. It is therefore
recommended that producers increase their acceptable ranges for BWT
by this amount. For example, if the heaviest BWT ASBV you have
previously been prepared to use was +0.4 kg, that range could now be
increased to +0.5 kg with the same birth weights resulting in the ram’s
progeny.
At the same time Weaning Weight (WWT) and Post Weaning Weight
(PWT) ASBVs have on average decreased by 0.4 kg and 0.7 kg
respectively. Index values have also decreased. For example, Carcase
Plus (C+) values have on average decreased by approximately 5 points.
Rams that would previously had C+ values of +185 may now be expected
values around +180.
When using ASBVs and Indexes it is important to compare the individual
animal’s values to the breed average and/or the percentile bands table to
assess the animal’s relative merit and identify where it ranks within the
breed.
If you require any further information regarding the use of ASBVs and
Indexes, please contact the Sheep Genetics staff on 02 6773 2948.
Hamish Chandler
LAMBPLAN Project Officer
Sheep Genetics
PO Box U254
Armidale NSW 2351
Ph 02 6773 2948
Fax 02 6773 2707
www.sheepgenetics.org.au
