Genetic solution to the problem of boar taint for production of entire males
This presentation is the property of its rightful owner.
Sponsored Links
1 / 17

Genetic solution to the problem of boar taint for production of entire males PowerPoint PPT Presentation


  • 79 Views
  • Uploaded on
  • Presentation posted in: General

Genetic solution to the problem of boar taint for production of entire males P.K. Mathur a ,*, H.A. Mulder b , J. Ten Napel b , J. J. Windig b , R.E. Crump b , B. van der Fels b , L. Heres c , S. Bloemhof a , M. S. Lopes a , E. F. Knol a a IPG, Institute for Pig Genetics B.V., The Netherlands

Download Presentation

Genetic solution to the problem of boar taint for production of entire males

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Genetic solution to the problem of boar taint for production of entire males

Genetic solution to the problem of boar taint for production of entire males

P.K. Mathura,*, H.A. Mulderb , J. Ten Napelb, J. J. Windigb, R.E. Crumpb, B. van der Felsb , L. Heresc, S. Bloemhofa,M. S. Lopesa, E. F. Knola

a IPG, Institute for Pig Genetics B.V., The Netherlands

b Animal Breeding and Genomics Centre, Wageningen UR

c VION Food Group, The Netherlands


Genetic solution to the problem of boar taint

Detection methods

Human Nose Scores (HNS)

Androstenone and skatole

Genetic parameters

Production

Reproduction

Genomic analysis

Breeding strategy

Genetic solution to the problem of boar taint


Boar taint

Boar taint

Consumers recognise boar taint by SMELL

When pork is heated


So do the slaughter plants

So do the slaughter plants ..

Schnippe, Schweinzuch und Schweinemast, SUS, 4:2011


We did so in the lab

We did so in the “lab”

Human Nose Scores (HNS)

4

3

2

1

0

21,972 samples

Source: Mathur et al. (2011) submitted to Meat Science journal


Genetic solution to the problem of boar taint for production of entire males

But the science believes in boar taint compounds

Accumulatedin fat

  • Skatole (3-methyle-indole)

  • Produced in hind gut

  • Related “Fecal” odour

  • Androstenone (pheromone)

  • Produced in testes

  • Related “urine” odour


Genetic parameters

Genetic parameters

More than 7,000 boars

Heritabilities (diagonal), Genetic correlation (below diagonal), Phenotypic correlations (above diagonal). Significant estimates in bold

Source: Windig et al. (2011) submitted to Journal of Animal Science


Production traits

Production traits

Genetic correlations

N= 7,336 : Androstenone and Skatole N= 20,130 : Human Nose Scores

Source: Windig et al. (2011) submitted to Journal of Animal Science


Reproduction traits

Reproduction traits

Genetic correlations

Significant estimates in bold


Genomic information

Genomic information

Reduction in boar taint due to a single SNP with large effect

Source: Duijvesteijn et al. BMC Genetics (2010)


We used a panel of snps

We used a panel of SNPs

Each AI boar genotyped with a panel of boar taint related SNPs selected out of 60K SNPs


Genomic selection

Genomic selection

Phenotypic data

HNS,

And, Ska

Genotypes based on selected SNP panel

Genomic Breeding Values

(GBVs)


Breeding goal

Breeding goal

Reduce “True” Boar taint

  • Assumed to follow normal distribution

  • Values on underlying scale based on area under the curve


Sorting of lbt boars

Sorting of LBT boars

a)

ASI compounds (carcass and biopsy)

b)

TOPIGS

LBT-boar

Human nose scores

c)

LBT = Low Boar Taint

Genomics


Effect of genetic selection

Effect of genetic selection

Human Nose Scores

Effect of LBT boars (%)

4

3

2

1

0


Conclusion

Conclusion

through a combination of:

A) Boar taint compounds (And, Ska)

B) Human nose scores

C) Genomic information

Boar taint can be reduced through genetics


Genetic solution to the problem of boar taint for production of entire males

Thanks !


  • Login