Growth performance and carcass traits in pigs selected for indirect genetic effects on growth rate in two environments

I. Camerlink, J.E. Bolhuis, N. Duijvesteijn, J.A.M. van Arendonk, P. Bijma

Research output: Contribution to journalArticleAcademicpeer-review

9 Citations (Scopus)

Abstract

Production traits such as growth rate may depend on the social interactions between group members. These social interactions might be partly heritable and are referred to as indirect genetic effects (IGE), social-, associative-, or competitive genetic effects. IGE may contribute to heritable variation in traits, and can thus be used to increase the response to selection. This, however, has hardly been tested by selection experiments. Our objective was to determine the effects of one generation of selection on IGE for growth (IGEg) in pigs on ADG, BW, ADFI, feed efficiency, and post-mortem measurements. Sires (n=24) and dams (n=64) were selected to create a high vs. low contrast for IGEg in the offspring (n=480). The IGE difference was 2.8 g ADG per pen mate, corresponding to 14 g higher ADG in high IGEg offspring compared to low IGEg offspring when housed in groups of 6 (i.e. (6-1)×2.8 = 14). Male (barrows) and female (gilts) offspring were housed in groups of 6 of the same IGEg classification, in either barren concrete pens or pen enriched with straw and wood shavings (n=80 pens). Pigs were followed from birth to slaughter. Data were analyzed in a mixed model with pen as random factor. There was no difference in ADG between high and low IGEg pigs during the finishing period (wk 10 to 23). Opposite to expectations, high IGEg tended to have a 17 g lower ADG from weaning to slaughter (P=0.08), which was caused by a higher BW of low IGEg pigs in wk 5 (P=0.008). This led to a 2.3 kg lower carcass weight (P=0.02) and 2.2 mm less muscle depth for high IGEg pigs (P=0.03). High IGEg pigs had a higher stomach wall damage score (P=0.01). Pigs on straw had a 25 g lower ADG during finishing (P=0.03), and less stomach wall damage (P
Original languageEnglish
Pages (from-to)2612-2619
JournalJournal of Animal Science
Volume92
Issue number6
DOIs
Publication statusPublished - 2014

Fingerprint

carcass characteristics
growth performance
Swine
swine
Growth
finishing
straw
slaughter
stomach
Interpersonal Relations
wood shavings
barrows
Stomach
dams (mothers)
carcass weight
gilts
sires
weaning
Cohort Effect
feed conversion

Keywords

  • finishing pigs
  • breeding programs
  • housing systems
  • ad-libitum
  • esophagogastric lesions
  • multilevel selection
  • fattening pigs
  • gastric-ulcers
  • daily gain
  • temperature

Cite this

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title = "Growth performance and carcass traits in pigs selected for indirect genetic effects on growth rate in two environments",
abstract = "Production traits such as growth rate may depend on the social interactions between group members. These social interactions might be partly heritable and are referred to as indirect genetic effects (IGE), social-, associative-, or competitive genetic effects. IGE may contribute to heritable variation in traits, and can thus be used to increase the response to selection. This, however, has hardly been tested by selection experiments. Our objective was to determine the effects of one generation of selection on IGE for growth (IGEg) in pigs on ADG, BW, ADFI, feed efficiency, and post-mortem measurements. Sires (n=24) and dams (n=64) were selected to create a high vs. low contrast for IGEg in the offspring (n=480). The IGE difference was 2.8 g ADG per pen mate, corresponding to 14 g higher ADG in high IGEg offspring compared to low IGEg offspring when housed in groups of 6 (i.e. (6-1)×2.8 = 14). Male (barrows) and female (gilts) offspring were housed in groups of 6 of the same IGEg classification, in either barren concrete pens or pen enriched with straw and wood shavings (n=80 pens). Pigs were followed from birth to slaughter. Data were analyzed in a mixed model with pen as random factor. There was no difference in ADG between high and low IGEg pigs during the finishing period (wk 10 to 23). Opposite to expectations, high IGEg tended to have a 17 g lower ADG from weaning to slaughter (P=0.08), which was caused by a higher BW of low IGEg pigs in wk 5 (P=0.008). This led to a 2.3 kg lower carcass weight (P=0.02) and 2.2 mm less muscle depth for high IGEg pigs (P=0.03). High IGEg pigs had a higher stomach wall damage score (P=0.01). Pigs on straw had a 25 g lower ADG during finishing (P=0.03), and less stomach wall damage (P",
keywords = "finishing pigs, breeding programs, housing systems, ad-libitum, esophagogastric lesions, multilevel selection, fattening pigs, gastric-ulcers, daily gain, temperature",
author = "I. Camerlink and J.E. Bolhuis and N. Duijvesteijn and {van Arendonk}, J.A.M. and P. Bijma",
year = "2014",
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Growth performance and carcass traits in pigs selected for indirect genetic effects on growth rate in two environments. / Camerlink, I.; Bolhuis, J.E.; Duijvesteijn, N.; van Arendonk, J.A.M.; Bijma, P.

In: Journal of Animal Science, Vol. 92, No. 6, 2014, p. 2612-2619.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Growth performance and carcass traits in pigs selected for indirect genetic effects on growth rate in two environments

AU - Camerlink, I.

AU - Bolhuis, J.E.

AU - Duijvesteijn, N.

AU - van Arendonk, J.A.M.

AU - Bijma, P.

PY - 2014

Y1 - 2014

N2 - Production traits such as growth rate may depend on the social interactions between group members. These social interactions might be partly heritable and are referred to as indirect genetic effects (IGE), social-, associative-, or competitive genetic effects. IGE may contribute to heritable variation in traits, and can thus be used to increase the response to selection. This, however, has hardly been tested by selection experiments. Our objective was to determine the effects of one generation of selection on IGE for growth (IGEg) in pigs on ADG, BW, ADFI, feed efficiency, and post-mortem measurements. Sires (n=24) and dams (n=64) were selected to create a high vs. low contrast for IGEg in the offspring (n=480). The IGE difference was 2.8 g ADG per pen mate, corresponding to 14 g higher ADG in high IGEg offspring compared to low IGEg offspring when housed in groups of 6 (i.e. (6-1)×2.8 = 14). Male (barrows) and female (gilts) offspring were housed in groups of 6 of the same IGEg classification, in either barren concrete pens or pen enriched with straw and wood shavings (n=80 pens). Pigs were followed from birth to slaughter. Data were analyzed in a mixed model with pen as random factor. There was no difference in ADG between high and low IGEg pigs during the finishing period (wk 10 to 23). Opposite to expectations, high IGEg tended to have a 17 g lower ADG from weaning to slaughter (P=0.08), which was caused by a higher BW of low IGEg pigs in wk 5 (P=0.008). This led to a 2.3 kg lower carcass weight (P=0.02) and 2.2 mm less muscle depth for high IGEg pigs (P=0.03). High IGEg pigs had a higher stomach wall damage score (P=0.01). Pigs on straw had a 25 g lower ADG during finishing (P=0.03), and less stomach wall damage (P

AB - Production traits such as growth rate may depend on the social interactions between group members. These social interactions might be partly heritable and are referred to as indirect genetic effects (IGE), social-, associative-, or competitive genetic effects. IGE may contribute to heritable variation in traits, and can thus be used to increase the response to selection. This, however, has hardly been tested by selection experiments. Our objective was to determine the effects of one generation of selection on IGE for growth (IGEg) in pigs on ADG, BW, ADFI, feed efficiency, and post-mortem measurements. Sires (n=24) and dams (n=64) were selected to create a high vs. low contrast for IGEg in the offspring (n=480). The IGE difference was 2.8 g ADG per pen mate, corresponding to 14 g higher ADG in high IGEg offspring compared to low IGEg offspring when housed in groups of 6 (i.e. (6-1)×2.8 = 14). Male (barrows) and female (gilts) offspring were housed in groups of 6 of the same IGEg classification, in either barren concrete pens or pen enriched with straw and wood shavings (n=80 pens). Pigs were followed from birth to slaughter. Data were analyzed in a mixed model with pen as random factor. There was no difference in ADG between high and low IGEg pigs during the finishing period (wk 10 to 23). Opposite to expectations, high IGEg tended to have a 17 g lower ADG from weaning to slaughter (P=0.08), which was caused by a higher BW of low IGEg pigs in wk 5 (P=0.008). This led to a 2.3 kg lower carcass weight (P=0.02) and 2.2 mm less muscle depth for high IGEg pigs (P=0.03). High IGEg pigs had a higher stomach wall damage score (P=0.01). Pigs on straw had a 25 g lower ADG during finishing (P=0.03), and less stomach wall damage (P

KW - finishing pigs

KW - breeding programs

KW - housing systems

KW - ad-libitum

KW - esophagogastric lesions

KW - multilevel selection

KW - fattening pigs

KW - gastric-ulcers

KW - daily gain

KW - temperature

U2 - 10.2527/jas.2013-7220

DO - 10.2527/jas.2013-7220

M3 - Article

VL - 92

SP - 2612

EP - 2619

JO - Journal of Animal Science

JF - Journal of Animal Science

SN - 0021-8812

IS - 6

ER -