Comparison of December 2008 genomic and traditional evaluations for young bulls

7,326 Holstein bulls

Trait	PTA				Reliability (%)
	Average		Difference1
	Genomic	Traditional	Average	Standard deviation	Genomic average	Traditional average	Difference1
Net merit ($)	384	418	−34	108	66	35	+31
Milk (pounds)	1,071	1,219	−148	462	70	38	+32
Fat (pounds)	44.9	51.7	−6.8	17.6	70	38	+32
Protein (pounds)	34.1	38.9	−4.8	12.0	70	38	+32
Productive life (months)	2.2	2.3	−0.1	1.4	60	30	+30
Somatic cell score	2.90	2.91	−0.01	0.12	66	33	+33
Daughter pregnancy rate (%)	−0.3	−0.4	+0.1	0.9	59	30	+29
Final score	2.21	2.23	−0.02	0.55	66	37	+29
Sire calving ease	7.6	7.8	−0.2	1.0	66	40	+26
Daughter calving ease	6.9	7.1	−0.2	1.0	59	31	+28

   ¹Genomic minus traditional.

123 Jersey bulls

Trait	PTA				Reliability (%)
	Average		Difference1
	Genomic	Traditional	Average	Standard deviation	Genomic average	Traditional average	Difference1
Net merit ($)	337	352	−15	82	55	34	+21
Milk (pounds)	954	965	−11	355	57	37	+20
Fat (pounds)	49.3	51.5	−2.2	13.3	57	37	+20
Protein (pounds)	36.0	37.3	−1.3	10.8	57	37	+20
Productive life (months)	2.1	2.1	0.0	0.9	48	28	+20
Somatic cell score	2.99	2.97	+0.02	0.08	53	32	+21
Daughter pregnancy rate (%)	−0.3	−0.3	0.0	0.6	47	27	+20
Final score	1.31	1.37	−0.06	0.36	52	34	+18

   ¹Genomic minus traditional.

Last Modified: 01/12/2017