By George Wiggans and Jan Wright
New variance components for evaluation of Jersey and Brown Swiss type traits were introduced. The new estimates for Brown Swiss were necessary to allow use of the same model that is used for the other non-Holstein breeds. Changes for Jersey variance components should more accurately reflect the current data by being based only on appraisals since 1995. They also should better estimate the relationships between the 14 linear traits without body depth, which is no longer scored. Current genetic parameters are found in the Type Evaluation Description document. Changes in heritabilities (new - old) for these breeds are:
| Trait | Brown Swiss | Jersey |
| Final score | -0.127 | -0.035 |
| Stature | 0.120 | -0.025 |
| Strength | 0.009 | -0.036 |
| Dairy form | -0.001 | -0.022 |
| Foot angle | -0.016 | 0.001 |
| Rear legs (side view) | -0.022 | -0.034 |
| Body depth | 0.019 | ··· |
| Rump angle | -0.020 | -0.096 |
| Rump width | 0.001 | -0.021 |
| Fore udder attachment | -0.004 | -0.035 |
| Rear udder height | -0.012 | -0.006 |
| Rear udder width | -0.007 | -0.005 |
| Udder depth | 0.035 | -0.110 |
| Udder cleft | 0.000 | -0.030 |
| Front teat placement | 0.004 | -0.046 |
| Teat length | -0.012 | -0.072 |
By George Wiggans
Changes to U.S. evaluation methodology for Jersey type traits were accepted by Interbull based on March test run results. However, because of rather large changes in variance for some traits, the May U.S. Jersey type evaluations were not accepted for inclusion in Interbull evaluations. Instead, the U.S. evaluations submitted for the test run (appraisals included for February U.S. evaluations but with variance component changes described above applied to calculations) were used for May Interbull evaluations. Officiality of evaluations (Interbull vs. U.S.) was determined as outlined in "AIPL Changes to Evaluation System - May 2001."