Changes in mean scrotal circumference in performance tested Swedish beef bulls over time

Table 1 Average (± SD) for scrotal circumference (cm) for the different breeds and years studied (n = 1332)

*Batch*	Angus n		Charolais n		Hereford n		Simmental n		Bulls (n), total
1997/1998	32.3 ± 1.8	7	32.7 ± 2.0	58	32.9 ± 2.7	20	35.4 ± 1.7	16	101
1998/1999	32.4 ± 0.5	5	33.9 ± 2.4	47	33.5 ± 2.3	23	35.6 ± 2.0	13	88
1999/2000	34.9 ± 1.5	11	33.3 ± 1.9	41	34.5 ± 2.3	19	35.1 ± 2.5	14	85
2000/2001	33.3 ± 2.1	10	32.8 ± 2.7	43	33.1 ± 2.2	16	36.5 ± 1.9	14	83
2001/2002	35.2 ± 3.2	11	33.7 ± 2.4	70	34.2 ± 1.5	16	37.8 ± 2.6	33	103
2002/2003	33.7 ± 3.1	7	33.4 ± 2.3	37	33.4 ± 2.3	9	37.6 ± 3.1	12	65
2003/2004	36.2 ± 2.2	13	35.5 ± 2.6	70	34.6 ± 2.3	12	37.7 ± 2.4	31	126
2004/2005	37.7 ± 2.1	3	35.7 ± 2.3	42	34.6 ± 2.3	10	37.1 ± 2.8	16	71
2005/2006	35.6 ± 2.1	10	34.9 ± 2.3	57	35.8 ± 2.4	10	38.5 ± 2.0	21	98
2006/2007	35.3 ± 1.9	10	34.1 ± 2.9	56	35.9 ± 2.4	18	37.5 ± 3.5	26	110
2007/2008	34.8 ± 2.3	9	34.2 ± 2.2	62	33.6 ± 2.3	21	37.1 ± 2.7	30	122
2008/2009	34.1 ± 1.4	13	33.7 ± 2.4	61	32.8 ± 2.1	20	36.7 ± 2.0	28	122
2009/2010	34.6 ± 2.6	11	34.6 ± 2.4	69	34.0 ± 2.1	22	37.8 ± 1.9	29	131
*In total*	34.7 ± 2.4	120	34.1 ± 2.5	713	34.0 ± 2.4	216	37.2 ± 2.6	283	1332

ISSN: 1751-0147