Aggressive and sexual behaviour of growing and finishing pigs reared in groups, without castration
- 1 June 2006
- journal article
- research article
- Published by Taylor & Francis Ltd in Acta Agriculturae Scandinavica, Section A — Animal Science
- Vol. 56 (2), 109-119
- https://doi.org/10.1080/09064700601079527
Abstract
Aggressive and sexual behaviour in entire males and females were studied on 408 pigs. The sum of aggressive interactions in the pen during routine feeding (ALP) was lowest in single-sex pens with females. ALP was higher at 132 than at 155 days. High ALP correlated with high average growth rate. Aggressive interactions in a competition test (IA) increased after slaughter of the three fastest-growing pigs in a pen (at 155 days), although the slaughtered pigs had initiated the most IA earlier (at 132 days). Entire male pigs displayed more sexual behaviour (mounting) than females. In 15% of entire males and 6% of females there were health problems specifically involving lameness or injured legs or feet. Five entire males and one female were euthanized in response to lameness or leg fracture. The rearing of entire male pigs may cause welfare problems, given their higher levels of aggression and sexual behaviour.Keywords
This publication has 31 references indexed in Scilit:
- Boar Taint is Related to Endocrine and Anatomical Changes at Puberty but not to Aggressive Behaviour in Entire Male PigsReproduction in Domestic Animals, 2005
- Group life.Published by CABI Publishing ,2001
- Sexual Maturity in Entire Male Pigs: Environmental Effects, Relations to Skatole Level and Female PubertyActa Agriculturae Scandinavica, Section A — Animal Science, 1999
- The behaviour of pigs in a semi-natural environmentAnimal Science, 1989
- The role of behavior in swine production: A review of researchApplied Animal Ethology, 1984
- Sex play and behavioural sexualization in the pigReproduction Nutrition Développement, 1984
- An analysis of agonistic interaction patterns in group-housed dry sows — Aggression regulation through an “avoidance order”Applied Animal Ethology, 1982
- An ethogram of social interaction patterns in group-housed dry sowsApplied Animal Ethology, 1980
- Aggressive behaviour in groups of domesticated pigs on removal and return of individualsAnimal Science, 1971
- Social behaviour of domestic animals. IV. Growing pigsAnimal Science, 1964