Tönepöhl, Björn

[["dc.bibliographiccitation.artnumber","e0204211"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","PLOS ONE"],["dc.bibliographiccitation.volume","13"],["dc.contributor.author","König von Borstel, Uta"],["dc.contributor.author","Tönepöhl, Björn"],["dc.contributor.author","Appel, Anne K."],["dc.contributor.author","Voß, Barbara"],["dc.contributor.author","Brandt, Horst"],["dc.contributor.author","Naderi, Saeid"],["dc.contributor.author","Gauly, Matthias"],["dc.date.accessioned","2019-07-09T11:49:51Z"],["dc.date.available","2019-07-09T11:49:51Z"],["dc.date.issued","2018"],["dc.description.abstract","Changes in husbandry systems as well as consumers' increasing demands for animal welfare lead to increasing importance of traits such as handleability and aggressiveness in pigs. However, before using such novel traits for selection decisions, information on genetic parameters for these traits for the specific population is required. Therefore, weight gain and behaviour-related traits were recorded in 1004 pigs (814 Pietrain x German Landrace crossbred, 190 German Landrace purebred) at different ages. Behaviour indicators and tests were assessed and conducted, respectively under commercial farm conditions and included scoring of skin lesions (twice) and behaviour during backtests (twice), injections (once), handling (twice) and weighing (three times). Since behaviour scores often exhibit suboptimal statistical properties for parametric analyses, variance components were estimated using an animal model assuming a normal (Gaussian, GA; all traits) and additionally a binary distribution of variables (BI; using a logit-link function for all behaviour traits). Heritabilities for behavioural traits ranged from 0.02 ± 0.04 (finishing pig handling test; BI) to 0.36 ± 0.08 (backtest 2; GA) suggesting that some of the traits are potentially useful for genetic selection (e.g. finishing pig weighing test: h2 (GA) = 0.20 ± 0.07). Only minor differences were observed for results from binary and Gaussian analyses of the same traits suggesting that either approach might yield valid results. However, four-fold cross-validation using correlations between breeding values of a sub-set of animals for the sample trait finishing pig weighing score indicated slight superiority of the logit model (r = 0.85 ± 0.04 vs. r = 0.77 ± 0.03). Generally, only weak to moderate associations were found between behavioural reactions to the same test at different ages (rp ≤ 0.11 for weighing at different ages; rp = 0.30 but rg (GA) = 0.84 ± 0.11 for the backtests) as well as between reactions to different tests. Therefore, for inclusion of behaviour traits into breeding programmes, and considering high labour input required for some tests such as the backtest, it is recommended to assess behaviour during situations that are relevant and identical to practical conditions, while the use of indicator traits generally does not appear to be a very promising alternative."],["dc.identifier.doi","10.1371/journal.pone.0204211"],["dc.identifier.pmid","30592711"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15796"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59646"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.ddc","630"],["dc.title","Suitability of traits related to aggression and handleability for integration into pig breeding programmes: Genetic parameters and comparison between Gaussian and binary trait specifications."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1234"],["dc.bibliographiccitation.issue","7"],["dc.bibliographiccitation.journal","Animal: The International Journal of Animal Bioscience"],["dc.bibliographiccitation.lastpage","1242"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Appel, A. K."],["dc.contributor.author","Voß, B."],["dc.contributor.author","Tönepöhl, B."],["dc.contributor.author","König von Borstel, U."],["dc.contributor.author","Gauly, M."],["dc.date.accessioned","2020-12-10T15:22:26Z"],["dc.date.available","2020-12-10T15:22:26Z"],["dc.date.issued","2016"],["dc.description.abstract","The present study examined the possibilities and consequences of selecting pigs for reduced aggression and desirable maternal behaviour. Data were recorded from 798 purebred Large White gilts, with an age of 217 +/- 17.7 (mean +/- SD) days, which were observed at mixing with unfamiliar conspecifics. The reaction of the sows towards separation from their litter was assessed for 2022 litters from 848 Large White sows. Sows' performance during their time in the farrowing unit was scored based on the traits farrowing behaviour (i.e. need of birth assistance), rearing performance (i.e. litter quality at day 10 postpartum (pp)), usability (i.e. additional labour input during lactation period e.g. for treatments) and udder quality of the sow (i.e. udder attachment). For agonistic behaviour, traits heritabilities of h(2)=0.11 +/- 0.04 to h(2)=0.28 +/- 0.06 were estimated. For the sow's reaction towards separation from her litter low heritabilities were found (h(2)=0.03 +/- 0.03 for separation test on day 1 pp and h(2)=0.02 +/- 0.03 for separation test on day 10 pp). Heritabilities for lactating sow's performance (farrowing behaviour, rearing performance, usability of the sow and udder quality) in the farrowing unit ranged from h(2)=0.03 +/- 0.02 to h(2)=0.19 +/- 0.03. Due to these results it can be assumed that selection for these traits, for example, for udder quality or reduced aggression, is possible. Antagonistic associations were found between separation test on day 1 pp and different measures of aggressiveness (r(g)=-0.22 +/- 0.26 aggressive attack and r(g)=-0.41 +/- 0.33 reciprocal fighting). Future studies should determine economic as well as welfare-related values of these traits in order to decide whether selection for these traits will be reasonable."],["dc.identifier.doi","10.1017/S1751731116000045"],["dc.identifier.eissn","1751-732X"],["dc.identifier.isi","000380957500020"],["dc.identifier.issn","1751-7311"],["dc.identifier.pmid","26868982"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14109"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/73396"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Cambridge Univ Press"],["dc.relation.issn","1751-732X"],["dc.relation.issn","1751-7311"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Genetic associations between maternal traits and aggressive behaviour in Large White sows"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]