| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2020: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
The implementation of genomic selection and evaluation has shortened the generation interval for dairy cattle. On the other hand, young sires and dams are not included in the genomic reference population (RP) because they don’t have no daughters or own records. There is concern about reduced accuracy for the young individuals without sire or dam in RP. Therefore, we compared the bias of direct genomic values (DGVs) for the young bulls between with and without sire in RP by using the simulation data. We revealed that the DGVs of the selected trait for the young bulls without sires in RP were more biased than those for bulls with sires, especially when the RP is small.
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