A variance component estimation approach to infer associations between Mendelian polledness and quantitative production and female fertility traits in German Simmental cattle

Table 2 Descriptive statistics for all evaluated production, SCS and fertility traits for the three polled genotype groups

Trait	Total number of records	Horned			Polled
		pp			Pp			PP
		n	Mean	SD	n	Mean	SD	n	Mean	SD
Milk yield/d	58,262	38,335	24.94	8.39	19,566	22.23	8.52	361	20.54	8.11
Protein percentage	58,262	38,335	3.54	0.39	19,566	3.46	0.40	361	3.42	0.41
Fat percentage	58,262	38,335	4.09	0.72	19,566	4.04	0.73	361	4.19	0.64
Somatic cell score	57,538	37,810	2.68	1.68	19,370	2.48	1.65	358	2.85	1.66
Non return rate 56	3333	2227	0.34	0.47	1093	0.30	0.46	13	0.23	0.44
Days open	4223	2824	31.46	51.37	1383	28.38	44.53	16	26.12	45.28
Days to first service	4223	2824	93.91	55.80	1383	91.59	49.86	16	90.19	50.34

ISSN: 1297-9686