Time of insemination in relation to pregnancy rates in beef cattle after oestrus detection with automated activity monitoring system

Table 1 Distribution of individuals and inseminations by farm, nulliparous or pluriparous and timing of AI relative to oestrus alarm from an automated activity monitoring system

Herd*	Number of		Heifer insemination timing			Cow insemination timing			Total number of inseminations
	Heifers	Cows	< 12 h	12–24 h	> 24 h	< 12 h	12–24 h	> 24 h	Heifers	Cows
1	29	51	1	17	14	8	31	9	32	58
2	9	19	4	8	1	13	20	12	13	45
3	12	33	2	11	1	8	33	5	14	46
4	0	7	0	0	0	6	3	1	0	10
5	11	0	4	5	2	0	0	0	11	0
Total			11	41	18	35	87	27	70	149

^*Herds 1 and 5 are located in central Norway. Herds 2, 3 and 4 are located in south-eastern Norway

ISSN: 1751-0147