'Subordination style' in pigs? The response of pregnant sows to mixing stress affects their offspring's behaviour and stress reactivity

SH Ison, RB D'Eath, SK Robson, EM Baxter, E Ormandy, AJ Douglas, JA Russell, AB Lawrence, S Jarvis

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

In various mammals stress during gestation can result in long term effects on the behaviour and physiology of the offspring. The aims of this study were (i) to characterise individual variation among primiparous sows (gilts) in their behavioural and physiological response to a commercially relevant social challenge (mixing with older sows) during gestation and (ii) to determine whether this variation was associated with a corresponding variation in the subsequent effects on the offspring. After assessing dominance in a food competition test, 24 gilts were studied in groups of six during two one-week periods (unmixed – U). These gilts were split into eight subgroups of three gilts, each of which weremixed with two older sows for one week (mixed – M1) before being returned to their original group of six for two weeks. Mixing was then repeated using different older sows during a second week (mixed – M2). Aggressive behaviour, skin lesions and salivary cortisol increase over baseline were higher, and weight gain was lower during mixed periods. During mixing gilts spent more time in feeder stalls, avoiding sows lying in a straw-bedded area, although there was considerable variation among individuals in the extent to which they interacted with or avoided sows. Gilts which interacted more with sows had lower weight gain and higher lesion scores. Previously dominant gilts had higher salivary cortisol increases during mixing. Measures of the impact of mixing, most notably M1 lesion scores, were associated with the behaviour of their offspring: gilts with more lesions had piglets that were less active and less vocal on the day of weaning and over 31 days post-weaning, and were less aggressive over 31 days post-weaning. Thirty-two piglets (from 16 of the gilts) were either restrained for 30 min or not restrained prior to euthanasia at 60 days of age. The restrained piglets from gilts with higher M1 lesion scores had higher levels of corticotropin-releasing hormonemRNA in the paraventricular nucleus and amygdala. This study demonstrates that differences between individual gilts in their experience of a stressful social challenge co-vary with the extent to which this pre-natal stress impacts on their offspring. 2010 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)16 - 27
Number of pages12
JournalApplied Animal Behaviour Science
Volume124
Publication statusFirst published - 2010

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gilts
sows
swine
lesions (animal)
weaning
piglets
weight gain
amygdala
corticotropin
skin lesions
dominance (genetics)
cortisol
long term effects
aggression
physiology
pregnancy
mammals

Bibliographical note

62100061
521129

Keywords

  • Behavioural strategies
  • Offspring reactivity
  • Pre-natal stress
  • Skin lesion scores
  • Social mixing

Cite this

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title = "'Subordination style' in pigs? The response of pregnant sows to mixing stress affects their offspring's behaviour and stress reactivity",
abstract = "In various mammals stress during gestation can result in long term effects on the behaviour and physiology of the offspring. The aims of this study were (i) to characterise individual variation among primiparous sows (gilts) in their behavioural and physiological response to a commercially relevant social challenge (mixing with older sows) during gestation and (ii) to determine whether this variation was associated with a corresponding variation in the subsequent effects on the offspring. After assessing dominance in a food competition test, 24 gilts were studied in groups of six during two one-week periods (unmixed – U). These gilts were split into eight subgroups of three gilts, each of which weremixed with two older sows for one week (mixed – M1) before being returned to their original group of six for two weeks. Mixing was then repeated using different older sows during a second week (mixed – M2). Aggressive behaviour, skin lesions and salivary cortisol increase over baseline were higher, and weight gain was lower during mixed periods. During mixing gilts spent more time in feeder stalls, avoiding sows lying in a straw-bedded area, although there was considerable variation among individuals in the extent to which they interacted with or avoided sows. Gilts which interacted more with sows had lower weight gain and higher lesion scores. Previously dominant gilts had higher salivary cortisol increases during mixing. Measures of the impact of mixing, most notably M1 lesion scores, were associated with the behaviour of their offspring: gilts with more lesions had piglets that were less active and less vocal on the day of weaning and over 31 days post-weaning, and were less aggressive over 31 days post-weaning. Thirty-two piglets (from 16 of the gilts) were either restrained for 30 min or not restrained prior to euthanasia at 60 days of age. The restrained piglets from gilts with higher M1 lesion scores had higher levels of corticotropin-releasing hormonemRNA in the paraventricular nucleus and amygdala. This study demonstrates that differences between individual gilts in their experience of a stressful social challenge co-vary with the extent to which this pre-natal stress impacts on their offspring. 2010 Elsevier B.V. All rights reserved.",
keywords = "Behavioural strategies, Offspring reactivity, Pre-natal stress, Skin lesion scores, Social mixing",
author = "SH Ison and RB D'Eath and SK Robson and EM Baxter and E Ormandy and AJ Douglas and JA Russell and AB Lawrence and S Jarvis",
note = "62100061 521129",
year = "2010",
language = "English",
volume = "124",
pages = "16 -- 27",
journal = "Applied Animal Behaviour Science",
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'Subordination style' in pigs? The response of pregnant sows to mixing stress affects their offspring's behaviour and stress reactivity. / Ison, SH; D'Eath, RB; Robson, SK; Baxter, EM; Ormandy, E; Douglas, AJ; Russell, JA; Lawrence, AB; Jarvis, S.

In: Applied Animal Behaviour Science, Vol. 124, 2010, p. 16 - 27.

Research output: Contribution to journalArticle

TY - JOUR

T1 - 'Subordination style' in pigs? The response of pregnant sows to mixing stress affects their offspring's behaviour and stress reactivity

AU - Ison, SH

AU - D'Eath, RB

AU - Robson, SK

AU - Baxter, EM

AU - Ormandy, E

AU - Douglas, AJ

AU - Russell, JA

AU - Lawrence, AB

AU - Jarvis, S

N1 - 62100061 521129

PY - 2010

Y1 - 2010

N2 - In various mammals stress during gestation can result in long term effects on the behaviour and physiology of the offspring. The aims of this study were (i) to characterise individual variation among primiparous sows (gilts) in their behavioural and physiological response to a commercially relevant social challenge (mixing with older sows) during gestation and (ii) to determine whether this variation was associated with a corresponding variation in the subsequent effects on the offspring. After assessing dominance in a food competition test, 24 gilts were studied in groups of six during two one-week periods (unmixed – U). These gilts were split into eight subgroups of three gilts, each of which weremixed with two older sows for one week (mixed – M1) before being returned to their original group of six for two weeks. Mixing was then repeated using different older sows during a second week (mixed – M2). Aggressive behaviour, skin lesions and salivary cortisol increase over baseline were higher, and weight gain was lower during mixed periods. During mixing gilts spent more time in feeder stalls, avoiding sows lying in a straw-bedded area, although there was considerable variation among individuals in the extent to which they interacted with or avoided sows. Gilts which interacted more with sows had lower weight gain and higher lesion scores. Previously dominant gilts had higher salivary cortisol increases during mixing. Measures of the impact of mixing, most notably M1 lesion scores, were associated with the behaviour of their offspring: gilts with more lesions had piglets that were less active and less vocal on the day of weaning and over 31 days post-weaning, and were less aggressive over 31 days post-weaning. Thirty-two piglets (from 16 of the gilts) were either restrained for 30 min or not restrained prior to euthanasia at 60 days of age. The restrained piglets from gilts with higher M1 lesion scores had higher levels of corticotropin-releasing hormonemRNA in the paraventricular nucleus and amygdala. This study demonstrates that differences between individual gilts in their experience of a stressful social challenge co-vary with the extent to which this pre-natal stress impacts on their offspring. 2010 Elsevier B.V. All rights reserved.

AB - In various mammals stress during gestation can result in long term effects on the behaviour and physiology of the offspring. The aims of this study were (i) to characterise individual variation among primiparous sows (gilts) in their behavioural and physiological response to a commercially relevant social challenge (mixing with older sows) during gestation and (ii) to determine whether this variation was associated with a corresponding variation in the subsequent effects on the offspring. After assessing dominance in a food competition test, 24 gilts were studied in groups of six during two one-week periods (unmixed – U). These gilts were split into eight subgroups of three gilts, each of which weremixed with two older sows for one week (mixed – M1) before being returned to their original group of six for two weeks. Mixing was then repeated using different older sows during a second week (mixed – M2). Aggressive behaviour, skin lesions and salivary cortisol increase over baseline were higher, and weight gain was lower during mixed periods. During mixing gilts spent more time in feeder stalls, avoiding sows lying in a straw-bedded area, although there was considerable variation among individuals in the extent to which they interacted with or avoided sows. Gilts which interacted more with sows had lower weight gain and higher lesion scores. Previously dominant gilts had higher salivary cortisol increases during mixing. Measures of the impact of mixing, most notably M1 lesion scores, were associated with the behaviour of their offspring: gilts with more lesions had piglets that were less active and less vocal on the day of weaning and over 31 days post-weaning, and were less aggressive over 31 days post-weaning. Thirty-two piglets (from 16 of the gilts) were either restrained for 30 min or not restrained prior to euthanasia at 60 days of age. The restrained piglets from gilts with higher M1 lesion scores had higher levels of corticotropin-releasing hormonemRNA in the paraventricular nucleus and amygdala. This study demonstrates that differences between individual gilts in their experience of a stressful social challenge co-vary with the extent to which this pre-natal stress impacts on their offspring. 2010 Elsevier B.V. All rights reserved.

KW - Behavioural strategies

KW - Offspring reactivity

KW - Pre-natal stress

KW - Skin lesion scores

KW - Social mixing

M3 - Article

VL - 124

SP - 16

EP - 27

JO - Applied Animal Behaviour Science

JF - Applied Animal Behaviour Science

SN - 0168-1591

ER -