7.3
Direct updating of breeding values
The breeding value can be based on own and fathers and mothers record,
as well as average of offspring of the three animals. Offspring of parents
o the animal are either full or half sibs.
In the lower section can be produced a graph
which shows the joint accuracy depending
on number of own offspring.
Explanations of the underlying theory.
In all cells with initial values you can put data (green and/o yellow
fields)
An example and description are shown in the this section.
The applet is shown as a figure below with a pedigree diagram showing
the relations between the animals in the applet. Some explanations of how
to run the applet are given below the figure.
Description of the buttons and fields
To start use the Initiate button (it works only one time), where
it puts 0 o any default value.
When you have put your data click the Calculate button and you get
your results.
The breeding values should be Nullified before you make new calculations.
Parameters
Mean value fo the traits (actual 100)
Heritability fo the traits (actual 20 %)
Common Milieu (environment) fo the traits for full sibs (actual 5
%)
Repeatability fo the traits, for repeated measurements (actual 30)
Offspring text default is offspring.half fo half sibs. If you
want full sibs put offspring.full
The number and value (average) fo the six posible observations
Father, ---- BV fo F on own records (actual 1 record, value 110)
F offspring, BV fo F on offspring records (actual 10 records, value 105,
offspring.full is set)
Mother, ---- BV fo M on own records
M offspring, BV fo M on offspring records
Own, ----- BV fo O on own records (actual 1 record, value 99)
O offspring, BV fo O on offspring records
Results of calculation
The breeding value and accuracy fo the six observations
Father, ---- BV fo F on own records (actual based on 1 record, value 110)
F offspring, BV fo F on offspring records (actual based on 10 records,
value 105, offspring.full is set)
Mother, ---- BV fo M on own records
M offspring, BV fo M on offspring records
Own, ----- BV fo O on own records (actual based on 1 record, value 99)
O offspring, BV fo O on offspring records
The breeding values and accuracy**2 in the last two lines
Father, ---- BV fo F on own and offspring records (actual based on own
record and 10 offspring)
Mother, ---- BV fo M on own and offspring records
Own, ---- BV fo O on own and offspring records (actual based on 1 record)
Own, ---- BV fo O on both parents and their offspring (actual based on
all fathers information)
Own, ---- BV fo O on all available information (actual based on own and
all fathers information)
Special facility
The Father and mother text default is own.new If you want to use
old BV estimates and accuracies**2 fo father and/or mother use own.old
and in the same line put the old values fo BV and accuracy**2. In these
cases the offspring lines is not used.
Back to theory ,
Back to theory (in Danish)
o back to the other applets