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Table 1 General characteristics of each farm included in this study

From: The evaluation of an artificial intelligence system for estrus detection in sows

 

Farm A

Farm B

Farm C

Herd size (number of sows)

250

450

300

Sow batch production system

5

4

3

Weaning age (days)

24

21

24

Origin of the breeding gilts

Own breeding

Purchase

Own breeding

Breed of the sows

English landrace × large white

TN70

TN70

Dose of sperm applied (number of spermatozoa)

2.4 × 109

0.8 × 109

1.6 × 109