| Evaluation date |
Changes
in genetic evaluations and editing systems |
|
| April 2008 |
Evaluation system
|
| January 2008 |
Evaluation system
- New evaluation schedule
- Interbull fertility evaluations for breeds other than Holstein
- Interbull evaluations on Milking Shorthorn base
- Jersey, Brown Swiss, and Guernsey conformation composites
|
|
August 2007 |
Evaluation
system
- Breed composition file for crossbreds
- Adjustments to all-breed model
- Parent averages for young bulls
- Revised definition of Interbull type-of-proof code
Editing system
- Correction of bull identification (ID) numbers with more than nine digits
|
|
May 2007 |
Evaluation
system
- All-breed animal model
- Genetic trend for daughter pregnancy rate
- Genetic trends for calving ease and stillbirth
- Revisions to herd variance adjustment
- Sample population for expected future inbreeding
|
February 2007 |
Evaluation system
- Fertility evaluations from Interbull
- Elimination of duplicate evaluations for Red-and-White bulls and related format-38 changes
Editing system
- Consistency in reporting abortions
- Designation of breedings with sexed semen
|
|
| November 2006 |
Evaluation system
- Holstein stillbirth and Brown Swiss calving ease (CE) from Interbull
- Ayrshire and Red Dairy Cattle breed codes
- Series-840 animal ID numbers
- Additional release of yield evaluations for dairy goats
Editing system
- Eliminating milk-component values when all cows have the same value
|
| August 2006 |
Evaluation
system
- Productive life (PL) credits revised
- Stillbirth and calving ability
- Lifetime net merit revised
- CE edits
|
|
May 2006 |
Evaluation
system
- Bull fertility evaluation transferred to AIPL
- Milking speed evaluations for Brown Swiss
- Rear legs/rear view evaluations for Brown Swiss and
Guernseys
|
|
February 2006 |
Evaluation
system
- Daughter pregnancy rate (DPR) for foreign bulls
|
|
|
November 2005 |
Editing
system
|
|
August 2005 |
Editing
system
|
|
May 2005 |
Evaluation
system
- CE edits
- Interbull daughter CE
- Herd-by-sire interaction variance
Evaluation correction
|
| February
2005 |
Evaluation correction
Base change (general documentation)
- Genetic and phenotypic progress
- DPR and somatic cell score (SCS) genetic bases
- CE and PL evaluations
- Model changes
- Genetic trend validation
Base changes
CE evaluation changes
Herd-by-sire interaction in evaluation models
|
|
|
November 2004 |
Evaluation system
- Interbull longevity evaluations
Editing
system
|
| August 2004 |
No changes
|
|
May 2004 |
Evaluation system
- New variances for Jersey and and Brown Swiss type
- Jersey Interbull type evaluations
Editing
system
|
|
February 2004 |
Evaluation
system
- Pregnancy rate excludes embryo donors
- Release of Interbull type evaluations for Ayrshire
bulls
|
|
|
November 2003 |
Evaluation system
- Earlier evaluation of DPR
- Fertility and CE in prediction of PL
- Measure of pedigree completeness
|
|
August 2003 |
Evaluation
system
- Fertility and CE in net merit
- New variances for Ayrshire type traits
Editing system
Delivery sysem
|
|
May 2003 |
Evaluation
system
- New variances for type traits
- Parent averages for net merit and DPR
Editing system
|
|
February 2003 |
Evaluation system
- DPR evaluations
introduced
- Changes in type evaluations for non-Holsteins
|
|
|
November 2002 |
Evaluation system
- Release of Interbull type evaluations for Guernsey and
Brown Swiss bulls
|
|
August 2002 |
Evaluation system
- Correlations between PL and yield
reduced
- Sire-maternal grandsire threshold model for CE
- Adjustment for heterogeneous variance in genetic
evaluation of type traits
Editing system
Delivery sysem
|
| May 2002 |
No changes
|
| February 2002 |
Evaluation system
|
|
|
November 2001
|
Evaluation
system
Editing system
|
|
August 2001 |
Evaluation system
- Release of Interbull type evaluations for Jersey
bulls
- Early release of bull ID information
- Early release of official Interbull evaluations
Editing system
|
| May 2001 |
Evaluation system
- Interbull SCS evaluations
- Variance adjustments for Jersey type traits
- Interbull conformation evaluations
- Officiality rules changed
Editing system
|
| February 2001 |
Evaluation system
- Delayed release of Interbull files
- Development of comparison tables
- Development of new e-mail notification list
Editing system
|
|
| November 2000 |
- Effective number of daughters used in Interbull reliabilities
- Revised correlations in multitrait PL
- Heritability increase for Jersey and Brown Swiss
- 3-character error codes
- Canadian and American ID checking
|
| August 2000 |
- Base change for production traits
- Base change for non-Holstein type traits
- Multitrait PL
- Lifetime net merit
- True protein replaced crude protein
- Foreign bull pedigree added
- Cross-references generated from cow control number
|
| May 2000 |
- High ranking grade designation corrected
- First-herd designation corrected
- Usable-herd designation corrected
- Reporting of test-day errors
- Cross-references derived from cow control number
|
| February 2000 |
- Foreign evaluations requested for more cow dams
- Inbreeding sample included more complete pedigrees
- Editing improved for test-day data
- Error detection improved for country codes in
ID numbers
|
|
| November 1999 |
- Foreign evaluations of parents included in cow
evaluations
- Different tests included when cows change herds
- Foreign ID may be preferred over U.S.
ID
|
| August 1999 |
- Net merit calculated from Interbull evaluations
that include SCS and PL evaluations based on 1 to 9
daughters; parent average previously used for those bulls
- Evaluation start moved 1 week later, allowing an
additional week of data to be included
|
| May 1999 |
- Fluid and cheese merit indexes and expected inbreeding available for cows
- Cows required to be tested in first 90 instead of 75 days of
lactation
- Maternal grandsire and birth date supplied for
international bulls
- Foreign evaluations of bull dams from more countries
used in parent averages
|
| February 1999 |
- Lactation records computed from test-day data by best prediction
- Factors to adjust for 3 milkings per day
updated
- Fluid merit and cheese merit indexes introduced
- New test-day edits and new programs to accommodate
American ID installed
- Use of Canadian dam data extended to other
nations
- New sampling procedures used for expected
inbreeding
- Bull rankings provided on web and automatically
by e-mail
|
|
| November 1998 |
- Cows in owner-sampler plans received predicted transmitting abilities (PTA's)
- Registry status and recessive codes provided
|
| August 1998 |
No changes
|
| May
1998 |
- Interbull evaluations official for a larger number of
bulls
|
| February 1998 |
- Formats displayed international ID numbers
and 4-digit years
- Expected inbreeding of future progeny provided to
help identify outcross bulls
- Reliabilities of milk, fat, and protein combined
into yield reliability
- Type data for breeds other than Holstein evaluated
with a multitrait animal model
|
|
| November
1997 |
No changes
|
| August
1997 |
- Heritability increased to 30%, herd-sire interaction
decreased to 10%, and permanent environment decreased to 15%
- Deviations from management group mean limited to 4
standard deviations
- Five Netherlands bulls received U.S. PTA's
|
| May
1997 |
- Frequency of evaluations increased to 4 times per
year
|
| February
1997 |
- Owner-sampler and other records with type-of-test 40 to 77 used
- Future milk prices forecast with a relative protein:fat ratio of
2:1
- National and international evaluations released
together
- Interbull evaluations preferred when reliability is
5% higher than U.S. reliability except when U.S. reliability reaches 80%
- Public access to cow and bull PTA's provided at
AIPL web site
|
|
| July
1996 |
- Lactation weights computed from record standards
variables instead of days in milk
|
| January
1996 |
- Missing PL and SCS added to make net merit
available for all cows
- Reliabilities for foreign bulls account for imperfect
genetic correlation
|
|
| July
1995 |
- Net merit, PL, and SCS provided for cows with
records
- For bulls with Canadian dams, converted Canadian data used for parent averages
|
| January
1995 |
- Genetic base changed to cows born in 1990
- New adjustment factors for age, parity, season, and
previous days open
- Residual age-parity effects included in model
- New multiplicative SCS age adjustment factors
- Conversions for European
bulls replaced with Interbull multitrait across-country evaluations (MACE)
|
|
| July
1994 |
- Direct and indirect measures of PL combined by
Holstein Association
- Missing PL and SCS added to provide net merit
for all bulls
- Percentiles changed from milk-fat-protein dollars (MFP$) to net merit (bulls
only)
- Reliability of net merit added
|
| January
1994 |
- PL, SCS, and net
merit introduced
- Inbreeding calculated and used in relationship matrix
inverse
|
|
| July
1993 |
- Converted Canadian data provided on same day and in same
format as U.S. data
|
| January 1993 |
- Improved editing system installed
- Animal model computations moved from Cornell to
AIPL
- Canadian evaluations converted and combined with
U.S. PTA's
|
|
| July
1992 |
No changes
|
|
| January
1992 |
No changes
|
|
| July 1991 |
- Heterogeneous variance adjustment began
|
| January 1991 |
- New lactation weights and expansion of partial records
began (RIP dip adjustment)
|
|
| July
1990 |
No changes
|
|
| January 1990 |
- Records from later herds included in animal
model
|
|
| July 1989 |
- Animal model implemented
- Genetic base changed to cows born in 1985
- Missing protein PTA's estimated
- Percentiles changed from milk-fat dollars (MF$) to MFP$
- Red-and-White breed data combined with Holstein data
|
|
| Earlier
history |
History of USDA
evaluations
|
|
