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Relationship between the behaviour of sows at 6 months old and the behaviour and performance at farrowing

Published online by Cambridge University Press:  01 January 2009

B. J. Lensink ,
H. Leruste ,
T. Le Roux  and
D. Bizeray-Filoche
B. J. Lensink*
Affiliation:
ISA (institut Supérieur d’Agriculture), CASE, 48 Boulevard Vauban, 59046 Lille Cedex, France
H. Leruste
Affiliation:
ISA (institut Supérieur d’Agriculture), CASE, 48 Boulevard Vauban, 59046 Lille Cedex, France
T. Le Roux
Affiliation:
Pen Ar Lan, route de Bovel, 35380 Maxent, France
D. Bizeray-Filoche
Affiliation:
Institut Polytechnique LaSalle Beauvais, CASE, rue Pierre Waguet, 60026 Beauvais Cedex, France
*
E-mail: [email protected]
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Abstract

Piglet crushing remains a major problem in pig production. Reduced crushing might be obtained through genetic selection on sow behavioural traits. The aim of the study was to assess the relationship between behavioural responses at 6 months of age, around farrowing, and sows’ reproductive performance including crushing levels. At 6 months of age, behavioural responses of 75 nulliparous sows were observed both during behavioural tests to human presence and to the presence of a novel object in their home pen, and their responses when placed in a weighing device. At first farrowing, nervousness of the sows was observed when placed in the farrowing crate 1 week before and the day of farrowing, as well as their fear responses when approached by a human from behind or at the front of the farrowing crate. At 6 months of age, escape from a human tended to be correlated with the reactivity in the weighing device (rs = 0.21, P = 0.09). Around first farrowing, the withdrawal reaction when a human approached at the front was correlated with the fear response when approached from behind and the nervousness of the sow in the crate (rs = 0.29, P < 0.05; rs = 0.37, P < 0.01). The fear response when approached from behind was correlated with nervousness in the crate and around farrowing (rs = 0.70, P < 0.001; rs = 0.25, P < 0.05), and nervousness in the crate was significantly correlated with the nervousness around farrowing (rs = 0.34, P < 0.01). The escape from a human at 6 months was correlated with withdrawal when approached from the front before farrowing (rs = 0.38, P < 0.01) and with nervousness of the sow in the crate (rs = 0.24, P < 0.05). The number of piglets crushed at first farrowing was correlated with the latency to approach a novel object at 6 months and nervousness around farrowing (rs = −0.27, P < 0.05; rs = 0.28, P < 0.05), and tended to be correlated with the escape behaviour from human at 6 months and withdrawal away from human presence before farrowing (rs = 0.21, P = 0.09; rs = 0.22, P = 0.08). These results suggest that behavioural responses to humans and during management practices of nulliparous sows at 6 months of age are, to some extent, related with their behaviour around farrowing and crushing levels of piglets at farrowing.

Keywords

human–animal interactionspiglet crushingpiglet mortalitysows
Type
Full Paper
Information
animal , Volume 3 , Issue 1 , January 2009 , pp. 128 - 134
Copyright
Copyright © The Animal Consortium 2008

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