Sperm sorting and low-dose insemination in the pig – an update

Prevention of Boar Taint in Pig Production

Proceedings of the 19

Symposium of the Nordic Committee for

Veterinary Scientific Cooperation (NKVet)

Quality Airport Hotel Gardermoen

Norway

21-22 November 2005

Edited by:

Øystein Andresen

Øystein Andresen, Norway (chairman)

Claes Fällström, Sweden

Bente Fredriksen, Norway

Christian Friis, Denmark

Olli Peltoniemi, Finland

Local Organising Committee

Ola Nyberg (chairman)

Ann Margareth Grøndahl

Tore Tollersrud

Ellef Blakstad

Øystein Andresen

Bente Fredriksen

The NKVet Board

Ann Margaret Grøndahl (leader)

Vibeke Dantzer, Denmark

Vibeke Sørensen, Denmark

Tuula Honkanen-Buzalski, Finland

Terttu Katila, Finland

Þorsteinn Ólafsson, Iceland

Anders Engvall, Sweden

Hans Kindahl, Sweden

Tore Tollersrud, Norway

Ola Nyberg, Norway (Secretary)

Distribution

The NKVet Secretariat

c/o The Norwegian Veterinary Association

P.B. 6781 St. Olavs Plass

0130 Oslo

Norway

Acknowledgements

The Scientific Programme Committee and the NKVet are indebted to the Nordic Joint

Committee for Agricultural Research (NKJ) who has made this Symposium and the printing

and distribution of the Proceedings financially possible.

CONTENTS

The Boar Taint Problem

Moving towards taint-free pork – alternatives to surgical castration………..S1

By K. Lundström and G. Zamaratskaia

Piglet castration and EU animal welfare legislation……….. S2 By R. Horgan

Animal Welfare Aspects of Preventing Boar Taint………S3 By M. Giersing, J. Ladewig and B. Forkman

The consumers’ view/reaction………S4 By C. Claudi-Magnussen

Boar-taint related compounds

Boar taint related compounds: Androstenone/skatole/other substances……….S5 By Ø. Andresen

Preventing of boar taint in pig production. Factors affecting the level of skatole………..S6 By B. Borg Jensen

Factors affecting the level of androstenone……….S7 By M. Bonneau

Genetics/Selection

Possibilities for selection against boar taint………S8 By E.J. Squires

Estimation of genetic parameters of boar taint;

skatole and androstenone and their correlations with sexual maturation………S9 By H. Tajet, Ø. Andresen and T.H.E. Meuwissen

Non surgical methods to avoid boar taint

Vaccination against GnRH: pros and cons………S10 By S. Einarsson

Sperm sorting and low-dose insemination in the pig – an update……….S11 By P.O. Hofmo

Castration: pain and analgesia

General anaesthesia, analgesia and pain associated with the castration of newborn piglets….S12 By N. Jäggin, S. Gerber and U. Schatzmann

Sorting of carcasses

Sorting criteria. Methods for on-line/at-line sorting of entire male carcasses

with emphasis on the Danish method based on skatole content………..S14 By J. Rud Andersen

The use of chemical sensor array technology, the electronic nose, for detection of boar taint…S15 By J.E. Haugen

National research programmes/policies

The Norwegian Research Programme for Entire Male Pig Production………S16 By B. Fredriksen and O. Nafstad

Posters

The potential to detect boar tainted carcasses by using an electronic nose based on

mass spectrometry………..P1 By S. Ampuero and G. Bee

Effects of finishing boars in mixed and single sex groups and split marketing on pig welfare….P2 By L. Björklund and L.A. Boyle

Artificial light programmes in entire male pig production – effects on androstenone,

skatole and animal welfare……….P3 By B. Fredriksen, O. Nafstad, B.M. Lium, C.H. Marka E. Dahl and J.U. Choinski

Effects of surgical castration on the behaviour and physiological response of weaned pigs….…P4 By S. Llamas Moya, L.A. Boyle, P.B. Lynch and S. Arkins

Early and reliable detection of boar taint and its genetic predisposition………P5 By G. Nijs, F.A.M. Tuyttens, S. Miller, M.J. Van Oeckel, N. Warnants, D.L De Brabander

and B. Sonck

Selection against boar taint: a simulation study………..P6 By Dorothe Ducro-Sterink

LIST OF PARTICIPANTS

Last name First name E-mail Title Country

Ahlström Susanna susanna.ahlstrom@mmm.fi Veterinary Officer Finland Aldal Inghild inghild.aldal@fagkjott.no Project manager Norway Ampuero Silvia silvia.ampuero@alp.admin.ch Switzerland Andersen Jan Rud jra@danishmeat.dk Development

Manager Denmark Andersson Lotta lotta.andersson@djurskyddsmyndigheten.se Sweden

Andresen Øystein oystein.andresen@veths.no Professor Norway Andrews Stuart donna.medley@pfizer.com Dr UK Archibald Alan alan.archibald@bbsrc.ac.uk Professor UK Bache Kathrine kathrine.bache@fagkjott.no PhD student Norway BONNEAU Michel Michel.Bonneau@rennes.inra.fr Dr. France Boyle Laura lboyle@moorepark.teagasc.ie Dr. Ireland Byrne Derek V. dby@kvl.dk Dr. Denmark

Claudi-Magnussen Chris ccm@danishmeat.dk Project manager PhD Denmark Crane John john.p.crane@pfizer.com US Dahl Ellen ellen.dahl@veths.no Chemist Norway Dantzer Vibeke vd@kvl.dk DR vet sci, Ass prof Denmark Doran Olena e.udovikova@bristol.ac.uk Dr UK

Ducro-Steverink Dorothe dorothe.ducro@ipg.nl dr Netherlands Egelandsdal Bjørg bjorg.egelandsdal@umb.no Professor Norway Einarsson Stig stig.einarsson@kv.slu.se Professor Sweden Elgjo Ragna

Følling ragna-folling.elgjo@lmd.dep.no Adviser Norway

Eliasson-Selling Lena lena-e-s@svdhv.org VDM Sweden Engvall Anders anders.engvall@sva.se Director General Sweden Fellström Claes Claes.Fellstrom@kv.slu.se Professor Sweden Fiskum Stein E. stein.e.fiskum@mattilsynet.no Senior adviser Norway Flåtten Audun audun.flatten@fagkjott.no Project manager Norway Fosse Torunn torunn.fosse@veths.no PhD-student Norway Framstad Tore tore.framstad@gilde.no Norway Fredriksen Bente bente.fredriksen@fagkjott.no Dr. Vet. Med., PHD Norway Friis Christian cfr@kvl.dk Professor Denmark Frøystein Terje terje.froystein@fagkjott.no Research Scientist Norway Gerber Axiak Shannon shannon.gerber@kkh.unibe.ch Dr. Switzerland Giersing Mette metg@kvl.dk PhD Denmark Gispert Marina marina.gispert@irta.es Spain Giuseppe Bee giuseppe.bee@alp.admin.ch PhD Switzerland Gjeldnes Anders anders.gjeldnes@veths.no engineer Norway Grendstad Eva H. E. eva.grendstad@lmd.dep.no Dep Director Gen Norway Grindflek Eli eli.grindflek@umb.no Dr. Norway Grøndahl Ann

Haugen John-Erik john-erik.haugen@matforsk.no Dr.scient Norway Heinonen Mari mari.heinonen@helsinki.fi Dr. Finland Hennessy David david.hennessy@pfizer.com Dr Australia Hofmo Peer Ola peer-ola.hofmo@norsvin.no Dr. Norway

Honkanen-Buzalski Tuula tuula.honkanen-buzalski@eela.fi Director General Finland Horgan Rex Rex.Horgan@cec.eu.int Mr Belgium Huber-Eicher Beat beat.huber@shl.bfh.ch Switzerland Jensen Bent Borg bentborg.jensen@agrsci.dk Dr Denmark Jäggin Nicola nicola.jaeggin@kkh.unibe.ch Switzerland Katila Terttu terttu.katila@helsinki.fi professor Finland Kindahl Hans Hans.Kindahl@kv.slu.se Professor Sweden Kjos Nils Petter nils.kjos@umb.no Norway Kleveland