Selection for social genetic effects in purebred pigs improves behaviour and handling of their crossbred progeny

Table 3 Frequencies of pigs across behavioural trait scores at day 1 and week 7after entering the finishing unit

Trait (below) \ Score (to the right)	1	2	3	4	5	Sum
Ear lesions* after 1 day	1876	1050	1539	225	38	4728
Ear lesions* after 7 weeks	3993	262	189	19	7	4470
Tail biting injuries** after 1 day	4002	590	47	89	–	4728
Tail biting injuries** after 7 weeks	3926	451	24	122	–	4523
Response to weighing crate*** after 1 day	421	2690	1607	9	–	4727
Response to weighing crate** after 7 weeks	473	2812	1184	1	–	4470

*The scores 1, 2, 3, 4, and 5 indicate the recorded number of 0, 1, 2, 3 and > 3 ear lesions
**The score = 1 indicates no tail biting injuries and score values > 1 indicate increasing severities of tail injury
***The scores 1, 2, 3, and 4 indicate “pig stands still during weighing and appears calm”, “pig moves around during weighing”, “pig moves around a lot during weighing, jumping and crashing into crate fittings”, and “pig appears ‘frozen with fear’ and stands still during weighing” and are on the ordinal scale. Scores 3 and 4 were combined in the analyses due to the scarcity of pigs that received score 4

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