Genetic linkage mapping of quantitative trait loci for behavioral and neuroendocrine stress response traits in pigs

A QTL analysis of behavioral and neuroendocrine responses to a "novel environment" stress was conducted in a three-generation experimental cross between Meishan and Large White pig breeds. A total of 186 F2 males and 182 F2 females were studied for their behavioral and neuroendocrine react...

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Veröffentlicht in:Journal of animal science 2002-09, Vol.80 (9), p.2276-2285
Hauptverfasser: Desautes, C, Bidanel, J. P, Milan, D, Iannuccelli, N, Amigues, Y, Bourgeois, F, Caritez, J. C, Renard, C, Chevalet, C, Mormede, P
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container_end_page 2285
container_issue 9
container_start_page 2276
container_title Journal of animal science
container_volume 80
creator Desautes, C
Bidanel, J. P
Milan, D
Iannuccelli, N
Amigues, Y
Bourgeois, F
Caritez, J. C
Renard, C
Chevalet, C
Mormede, P
description A QTL analysis of behavioral and neuroendocrine responses to a "novel environment" stress was conducted in a three-generation experimental cross between Meishan and Large White pig breeds. A total of 186 F2 males and 182 F2 females were studied for their behavioral and neuroendocrine reactivity to a novel environment test at 6 wk of age. Locomotion, vocalization, and defecation rate, as well as exploration time, were measured for 10 min. Blood samples were taken immediately before and after the test to measure plasma levels of ACTH, cortisol, and glucose. Animals were typed for a total of 137 markers covering the entire porcine genome. Analyses were performed using two interval mapping methods: a line-cross regression method, where founder lines were assumed to be fixed for different QTL alleles, and a half-/full-sib maximum likelihood method where allele substitution effects were estimated within each half-/full-sib family. Both methods revealed a highly significant gene effect for poststress cortisol level (P < 0.001) and a significant effect for basal cortisol level (P < 0.05) at the end of the q arm of chromosome 7, explaining, respectively, 20% and 7% of the phenotypic variance. Meishan alleles are associated with higher cortisol levels and are partially dominant (for poststress levels) over Large White alleles. Other significant gene effects on biological measures were detected on chromosomes 1 and 17 (ACTH response to stress), 3, 5, and 8 (glucose levels). The SSC 17 QTL explains 12% of the phenotypic variance of poststress ACTH levels, with a suggestive evidence of imprinting effects. Meishan alleles are associated with lower poststress ACTH levels. Gene effects of low amplitude only were found for behavioral reactivity traits. Considering the effects of stress neuroendocrine systems on energy fluxes and protein deposition, and the importance of stress reactivity for meat quality and animal welfare, these results open new perspectives for pig selection.
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P ; Milan, D ; Iannuccelli, N ; Amigues, Y ; Bourgeois, F ; Caritez, J. C ; Renard, C ; Chevalet, C ; Mormede, P</creator><creatorcontrib>Desautes, C ; Bidanel, J. P ; Milan, D ; Iannuccelli, N ; Amigues, Y ; Bourgeois, F ; Caritez, J. C ; Renard, C ; Chevalet, C ; Mormede, P</creatorcontrib><description>A QTL analysis of behavioral and neuroendocrine responses to a "novel environment" stress was conducted in a three-generation experimental cross between Meishan and Large White pig breeds. A total of 186 F2 males and 182 F2 females were studied for their behavioral and neuroendocrine reactivity to a novel environment test at 6 wk of age. Locomotion, vocalization, and defecation rate, as well as exploration time, were measured for 10 min. Blood samples were taken immediately before and after the test to measure plasma levels of ACTH, cortisol, and glucose. Animals were typed for a total of 137 markers covering the entire porcine genome. Analyses were performed using two interval mapping methods: a line-cross regression method, where founder lines were assumed to be fixed for different QTL alleles, and a half-/full-sib maximum likelihood method where allele substitution effects were estimated within each half-/full-sib family. Both methods revealed a highly significant gene effect for poststress cortisol level (P &lt; 0.001) and a significant effect for basal cortisol level (P &lt; 0.05) at the end of the q arm of chromosome 7, explaining, respectively, 20% and 7% of the phenotypic variance. Meishan alleles are associated with higher cortisol levels and are partially dominant (for poststress levels) over Large White alleles. Other significant gene effects on biological measures were detected on chromosomes 1 and 17 (ACTH response to stress), 3, 5, and 8 (glucose levels). The SSC 17 QTL explains 12% of the phenotypic variance of poststress ACTH levels, with a suggestive evidence of imprinting effects. Meishan alleles are associated with lower poststress ACTH levels. Gene effects of low amplitude only were found for behavioral reactivity traits. Considering the effects of stress neuroendocrine systems on energy fluxes and protein deposition, and the importance of stress reactivity for meat quality and animal welfare, these results open new perspectives for pig selection.</description><identifier>ISSN: 0021-8812</identifier><identifier>ISSN: 1525-3163</identifier><identifier>EISSN: 1525-3163</identifier><identifier>DOI: 10.2527/2002.8092276x</identifier><identifier>PMID: 12350005</identifier><language>eng</language><publisher>Savoy, IL: Am Soc Animal Sci</publisher><subject>Adrenocorticotropic Hormone - blood ; Animal behavior ; Animal productions ; Animals ; Behavior, Animal - physiology ; Biological and medical sciences ; Chromosome Mapping - veterinary ; Defecation - physiology ; Environment ; Female ; Fundamental and applied biological sciences. Psychology ; Genes. Genome ; Genetic Linkage ; Genetics ; Genetics, Behavioral ; Genotype ; Hogs ; Hydrocortisone - blood ; Male ; Molecular and cellular biology ; Molecular genetics ; Motor Activity - physiology ; Neurosecretory Systems - physiology ; Phenotype ; Quantitative Trait Loci ; Stress ; Stress, Physiological - veterinary ; Swine - genetics ; Terrestrial animal productions ; Vertebrates ; Vocalization, Animal - physiology</subject><ispartof>Journal of animal science, 2002-09, Vol.80 (9), p.2276-2285</ispartof><rights>2002 INIST-CNRS</rights><rights>Copyright American Society of Animal Science Sep 2002</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c408t-32bb6017ae2d051098cce66f7a6ec688047ab18f19d2829958eb117571e768e43</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=13899696$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/12350005$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Desautes, C</creatorcontrib><creatorcontrib>Bidanel, J. 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subjects Adrenocorticotropic Hormone - blood
Animal behavior
Animal productions
Animals
Behavior, Animal - physiology
Biological and medical sciences
Chromosome Mapping - veterinary
Defecation - physiology
Environment
Female
Fundamental and applied biological sciences. Psychology
Genes. Genome
Genetic Linkage
Genetics
Genetics, Behavioral
Genotype
Hogs
Hydrocortisone - blood
Male
Molecular and cellular biology
Molecular genetics
Motor Activity - physiology
Neurosecretory Systems - physiology
Phenotype
Quantitative Trait Loci
Stress
Stress, Physiological - veterinary
Swine - genetics
Terrestrial animal productions
Vertebrates
Vocalization, Animal - physiology
title Genetic linkage mapping of quantitative trait loci for behavioral and neuroendocrine stress response traits in pigs
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