Maximising genetic gain while controlling inbreeding


Animal WelfareProductivity & ProfitSustainability

Sustainable breeding strikes a balance between realising the genetic gain and reducing the harmful effects of inbreeding. As selection becomes more intense, and only the very best animals are selected as parents of the next generation, breeding animals will become more related and thus more inbred. DanBred uses the state-of-the-art method of selection – optimum-contribution selection – to maximise genetic gain while controlling the rate of inbreeding.

 

In DanBred, we are highly effective at using genetic selection to realise the genetic gain and increase the genetic potential of pigs – in order to deliver high performance results for your pig production. Our customers get access to the breeding system through a Nucleus Management agreement as an extension to GenePro, which helps you safely identify the best animals for breeding. However, while selection is a powerful tool that has increased the genetic potential of animals, these gains come with a cost: inbreeding.

Clearly, breeders face a dilemma between realising the genetic gain and controlling inbreeding. The appeal of genetic gains is driven by global competition between breeding companies, which can make it tempting to ignore the harmful effects of inbreeding – and select only the very best animals as parents. This temptation is merely amplified by the fact that genetic gain from selection is often seen from the first generation, whereas the harmful effects of inbreeding take time to accumulate and do not become a problem until future generations. Nevertheless, if you want your breeding program to be responsible, sustainable, and profitable long term, you need to aim for the right balance between realising genetic gains and reducing the harmful effects of inbreeding. Using advanced technology, DanBred can help you select the best breeding pigs to gain breeding progress while controlling the inbreeding.

 

 

Inbreeding and its consequences

 

Inbreeding is a natural and inevitable phenomenon in animal populations. Inbreeding occurs when offspring are produced by mating related individuals, i.e. individuals that have a common   ancestor(s).The more related the individuals, the more inbreeding.

 

This is harmful to your breeding program because:

– It causes inbreeding depression, which reduces an animal’s production performance, health, and welfare

– It causes losses in genetic variation in a population, which reduces the potential of realising future genetic gains

 

In its most extreme form, inbreeding can lead to the demise of animal breeds.

 

Rate of inbreeding

Inbreeding occurs when the two versions of a gene inherited by an offspring from its parents are copies of the same gene from an ancestor. These offspring are identical-by-descent (IBD) for that specific gene. The inbreeding coefficient of an individual animal is the proportion of its genes that are IBD.

However, the inbreeding coefficient of an individual animal is not the most critical inbreeding parameter for an animal population. What is even more important is the rate at which the inbreeding coefficients of individuals in a population increase over generations. This is known as the rate of inbreeding for a population – and it is directly related to the harmful effects of inbreeding. Consequently, controlling the rate of inbreeding is key to reducing the harmful effects of inbreeding.

Accurate estimates of the rate of inbreeding

If it were possible to observe all the genes along the DNA of all the pigs in a population, we would know each pig’s true inbreeding coefficient and the rate of true inbreeding in the population. Unfortunately, that is not possible. Without accurate estimators for the rates of true inbreeding, it is challenging to control it. Therefore, DanBred is determined to develop observable and accurate estimators of rates of true inbreeding – and make this a central part of our breeding program.

The rates of true inbreeding can be estimated using either pedigree or genomic information. Pedigree information always underestimates rates of true inbreeding, whereas genomic information tends to overestimate them.

 

Striking the right balance

DanBred uses optimum-contribution selection (OCS) to select boars in its breeding program for DanBred Duroc, but we are also working to implement it in DanBred Landrace and DanBred Yorkshire. OCS is a state-of-the-art method of selection because it maximises genetic gain at acceptable rates of inbreeding. One of the benefits of OCS is that it can optimise genetic contributions when different sources of information are used – to predict genetic gain and control rates of inbreeding. The genetic gain is predicted using DanBred’s breeding values, which are estimated using genomic information, also referred to as genomic selection. Rates of inbreeding can be controlled using OCS with pedigree information or genomic information (POCS or GOCS).

DanBred uses POCS to control inbreeding for DanBred Duroc. When POCS and GOCS are compared at the same rate of true inbreeding in simulated data, POCS always realises more genetic gain than GOCS. This may seem counterintuitive at first, as genomic information is more accurate than pedigree information. But POCS realises more genetic gain than GOCS because it allows selection to increase the number of favourable genes in a population more than GOCS does. Therefore, there is currently more incentive to use POCS in DanBred’s breeding program, nevertheless, that does not rule out the possibility of using GOCS in future. There is still a lot to learn before we can use genomic information to control rates of inbreeding, but DanBred is working towards methods that improve GOCS so that it realises more genetic gain than POCS at acceptable rates of inbreeding.

 

Deduced version of an article originally written by Mark Henryon, Senior Scientist at SEGES Pig Research Centre, Christian Sørensen, Senior Scientist at SEGES Pig Research Centre, and Lizette Vestergaard Pedersen, Senior Consultant at SEGES Pig Research Centre, and published in International Pig Topics.





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Résultats de production moyens obtenus par les verrats DanBred en élevages de sélection, 2020

  • GMQ de 30 kg à l’abattage (g/jour) 1143
  • GMQ de la naissance à 30 kg (g/jour) 382
  • Taux de muscle (%) 64,2
  • Conformation, points 2,87
  • Mesure par scan, mm 6,5
  • Poids par scan, kg 98,8

Gennemsnitlige resultater for DanBred orner afprøvet på forsøgsstationen Bøgildgård

  • Daglig tilvækst, g/dag 30 kg – slagtning 1258
  • Foderudnyttelse, FEs/kg Tilvækst, 30 kg – slagtning 1,96
  • Kødprocent (%) 63,0
  • Styrke, point 2,88
  • Slagtesvind (%) 25,2
  • Rygspæk, mm 6,0
  • Scanningsvægt, kg 101,7

Resultados promedio de producción conseguidos por los verracos DanBred en núcleos

  • Ganancia media diaria, g/día; 30 kg – sacrificio 1322
  • Ganancia media diaria, g/día; nacimiento – 30 kg 409
  • Porcentaje de carne magra 62,0
  • Conformación, puntos 2,87
  • Medición de escaneo, mm 6,8
  • Peso de escaneo, kg 99,1

Gemiddeld productieresultaat behaald door beren van DanBred in kernbedrijven

  • Dagelijkse groei (g/dag), 30 kg – slacht 1322
  • Dagelijkse groei (g/dag), geboorte – 30 kg 409
  • Mager-vleespercentage (%) 62,0
  • Conformatie (punten) 2,87
  • Rugspekdiktemeting (mm) 6,8
  • Levend Scangewicht (kg) 99,1

Producción media en la central de pruebas de verracos de Bøgildgaard

  • Ganancia media diaria, g/día; 30 kg – sacrificio 1258
  • Índice de Conversión, kg pienso/kg ganancia; 30 kg – sacrificio 1,83
  • Porcentaje de carne magra 63,0
  • Conformación, puntos 2,88
  • Pérdida al sacrificio (Rendimiento canal) 25,2
  • Medición de escaneo, mm 6,0
  • Peso de escaneo, kg 101,7

Gemiddelde productie resultaten van berenteststation Bøgildgård

  • Dagelijkse groei (g/dag), 30 kg – slacht 1258
  • Voederconversie, kg voer//kg gewichtstoename, 30 kg – slacht 1,83
  • Mager-vleespercentage (%) 63,0
  • Conformatie (punten) 2,88
  • Slachtrendement (zonder kop) 25,2
  • Rugspekdiktemeting (mm) 6,0
  • Levend Scangewicht (kg) 101,7

Gennemsnitlige resultater for DanBred polte afprøvet i avlsbesætningerne

  • Daglig tilvækst, g/dag 30 kg – slagtning 1222
  • Daglig tilvækst, g/dag Fødsel – 30 kg 413
  • Kødprocent (%) 62,4
  • Styrke, point 2,94
  • Rygspæk, mm 6,4
  • Scanningsvægt, kg 99,3

Gennemsnitlige resultater for DanBred orner afprøvet i avlsbesætningerne

  • Daglig tilvækst, g/dag 30 kg – slagtning 1322
  • Daglig tilvækst, g/dag Fødsel – 30 kg 409
  • Kødprocent (%) 62,0
  • Styrke, point 2,87
  • Rygspæk, mm 6,8
  • Scanningsvægt, kg 99,1

Average production results achieved by DanBred females (gilts) in Nucleus herds

  • Daily gain, g/day, 30 kg – slaughter 1222
  • Daily gain, g/day, birth – 30 kg 413
  • Lean meat perctentage 62.4
  • Conformation, points 2.94
  • Scanning measurement, mm 6.4
  • Scanning weight, kg 99.3

Average production results achieved by DanBred boars in Nucleus herds

  • Daily gain, g/day, 30 kg – slaughter 1322
  • Daily gain, g/day, birth - 30kg 409
  • Lean meat perctentage 62.0
  • Conformation, points 2.87
  • Scanning measurement, mm 6.8
  • Scanning weight, kg 99.1

Average production for boar testing station Bøgildgård

  • Daily gain, g/day, 30 kg – slaughter 1258
  • Feed conversion, kg feed/kg gain, 30 kg – slaughter 1.83
  • Lean meat perctentage 63.0
  • Conformation, points 2.88
  • Killing out percentage 25.2
  • Scanning measurement, mm 6.0
  • Scanning weight, kg 101.7

Average production results achieved by DanBred gilts in Nucleus herds

  • Daily gain, g/day, 30 kg – slaughter 1089
  • Daily gain, g/day, birth – 30 kg 386
  • Lean meat perctentage 64.5
  • Conformation, points 3.05
  • Scanning measurement, mm 6.2
  • Scanning weight, kg 98.9

Average production results achieved by DanBred boars in Nucleus herds

  • Daily gain, g/day, 30 kg – slaughter 1143
  • Daily gain, g/day, birth – 30 kg 382
  • Lean meat perctentage 64.2
  • Conformation, points 2.87
  • Scanning measurement, mm 6.5
  • Scanning weight, kg 98.8

Average production for boar testing station Bøgildgård

  • Daily gain, g/day, 30 kg – slaughter 1107
  • Feed conversion, kg feed/kg gain, 30 kg – slaughter 1.94
  • Lean meat perctentage 65.1
  • Conformation, points 2.90
  • Killing out percentage 26.3
  • Scanning measurement, mm 5.4
  • Scanning weight, kg 99.1

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Résultats de production moyens des verrats DanBred de la station de test de Bøgildgård, 2020

  • GMQ de 30 kg à l’abattage (g/jour) 1107
  • Indice de consommation kg/kg, 30 kg – abattage 1,94
  • Taux de muscle (%) 65,1
  • Conformation, points 2,90
  • Rendement carcasse 26,3
  • Mesure par scan, mm 5,4
  • Poids par scan, kg 99,1

Durchschnittliche Produktionsergebnisse von DanBred-Ebern in Nukleusherden

  • Tageszunahme 30 kg – Schlachtung (g/Tag) 1135
  • Tageszunahme Geburt – Schlachtung (g/Tag) 360
  • Magerfleischanteil 62,6
  • Fundament, Punkte 3,08
  • Rückenspeck, mm 7,2
  • Gescanntes Gewicht, kg 98,3

Résultats de production moyens obtenus par les femelles (cochettes) DanBred en élevages de sélection, 2020

  • GMQ de 30 kg à l’abattage (g/jour) 1089
  • GMQ de la naissance à 30 kg (g/jour) 386
  • Taux de muscle (%) 64,5
  • Conformation, points 3,05
  • Mesure par scan, mm 6,2
  • Poids par scan, kg 98,9

Resultados de producción medios conseguidos por las cerdas jóvenes de DanBred en núcleos

  • Ganancia media diaria, g/día; 30 kg – sacrificio 1103
  • Ganancia de peso diaria, g/día; nacimiento – 30 kg 367
  • Porcentaje de carne magra 62,2
  • Conformación, puntos 3,15
  • Medición de escaneo, mm 7,9
  • Peso de escaneo, kg 98,0

Resultados promedio de producción conseguidos por los verracos DanBred en núcleos

  • Ganancia media diaria, g/día; 30 kg – sacrificio 1135
  • Ganancia media diaria, g/día; nacimiento – 30 kg 360
  • Porcentaje de carne magra 62,6
  • Conformación, puntos 3,08
  • Medición de escaneo, mm 7,2
  • Peso de escaneo, kg 98,3

Producción media en la central de pruebas de verracos de Bøgildgaard

  • Ganancia media diaria, g/día; 30 kg – sacrificio 1097
  • Índice de Conversión, kg pienso/kg ganancia; 30 kg – sacrificio 1,93
  • Porcentaje de carne magra 63,2
  • Conformación, puntos 3,06
  • Pérdida al sacrificio (Rendimiento canal) 26,6
  • Medición de escaneo, mm 6,0
  • Peso de escaneo, kg 97,8

Resultados de producción medios conseguidos por las cerdas jóvenes de DanBred en núcleos

  • Ganancia media diaria, g/día; 30 kg – sacrificio 1089
  • Ganancia de peso diaria, g/día; nacimiento – 30 kg 386
  • Porcentaje de carne magra 64,5
  • Conformación, puntos 3,05
  • Medición de escaneo, mm 6,2
  • Peso de escaneo, kg 98,9

Resultados promedio de producción conseguidos por los verracos DanBred en núcleos

  • Ganancia media diaria, g/día; 30 kg – sacrificio 1143
  • Ganancia media diaria, g/día; nacimiento – 30 kg 382
  • Porcentaje de carne magra 64,2
  • Conformación, puntos 2,87
  • Medición de escaneo, mm 6,5
  • Peso de escaneo, kg 98,8

Producción media en la central de pruebas de verracos de Bøgildgaard

  • Ganancia media diaria, g/día; 30 kg – sacrificio 1107
  • Índice de Conversión, kg pienso/kg ganancia; 30 kg – sacrificio 1,94
  • Porcentaje de carne magra 65,1
  • Conformación, puntos 2,90
  • Pérdida al sacrificio (Rendimiento canal) 26,3
  • Medición de escaneo, mm 5,4
  • Peso de escaneo, kg 99,1

Gemiddeld productieresultaat behaald door jonge
zeugen (< 1 jaar) van DanBred in kernbedrijven

  • Dagelijkse groei (g/dag), 30 kg – slacht 1089
  • Dagelijkse groei (g/dag), geboorte – 30 kg 386
  • Mager-vleespercentage (%) 64,5
  • Conformatie (punten) 3,05
  • Rugspekdiktemeting (mm) 6,2
  • Levend Scangewicht (kg) 98,9

Gemiddelde productie van berenteststation Bøgildgård

  • Dagelijkse groei (g/dag), 30 kg – slacht 1107
  • Voederconversie, kg voer//kg gewichtstoename, 30 kg – slacht 1,94
  • Mager-vleespercentage (%) 65,1
  • Conformatie (punten) 2,90
  • Slachtrendement (zonder kop) 26,3
  • Rugspekdiktemeting (mm) 5,4
  • Levend Scangewicht (kg) 99,1

Gemiddeld productieresultaat behaald door jonge
zeugen (< 1 jaar) van DanBred in kernbedrijven

  • Dagelijkse groei (g/dag), 30 kg – slacht 1103
  • Dagelijkse groei (g/dag), geboorte – 30 kg 367
  • Mager-vleespercentage (%) 62,2
  • Conformatie (punten) 3,15
  • Rugspekdiktemeting (mm) 7,9
  • Levend Scangewicht (kg) 98,0

Gemiddeld productieresultaat behaald door beren van DanBred in kernbedrijven

  • Dagelijkse groei (g/dag), 30 kg – slacht 1135
  • Dagelijkse groei (g/dag), geboorte – 30 kg 360
  • Mager-vleespercentage (%) 62,6
  • Conformatie (punten) 3,08
  • Rugspekdiktemeting (mm) 7,2
  • Levend Scangewicht (kg) 98,3

Gemiddelde productie van berenteststation Bøgildgård

  • Dagelijkse groei (g/dag), 30 kg – slacht 1097
  • Voederconversie, kg voer//kg gewichtstoename, 30 kg – slacht 1,93
  • Mager-vleespercentage (%) 63,2
  • Conformatie (punten) 3,06
  • Slachtrendement (zonder kop) 25,6
  • Rugspekdiktemeting (mm) 6,0
  • Levend Scangewicht (kg) 97,8

Durchschnittliche Produktionsergebnisse von DanBred-Weibchen (Jungsauen) in Nukleusherden

  • Tageszunahme 30 kg – Schlachtung (g/Tag) 1103
  • Tageszunahme Geburt – Schlachtung (g/Tag) 367
  • Magerfleischanteil 62,2
  • Fundament, Punkte 3,15
  • Rückenspeck, mm 7,9
  • Gescanntes Gewicht, kg 98,0

Durchschnittsproduktion laut Eberprüfstation Bøgildgård

  • Tageszunahme 30 kg – Schlachtung (g/Tag) 1097
  • Futterverwertung 30 kg – Schlachtung (kg Futter / kg Tageszunahme) 2,06
  • Magerfleischanteil 63,2
  • Fundament, Punkte 3,06
  • Anteil geschlachteter Tiere (%) 26,6
  • Rückenspeck, mm 6,0
  • Gescanntes Gewicht, kg 97,8

Durchschnittliche Produktionsergebnisse von DanBred-Weibchen (Jungsauen) in Nukleusherden

Durchschnittliche Produktionsergebnisse von DanBred-Ebern in Nukleusherden

  • Tageszunahme 30 kg – Schlachtung (g/Tag) 1143
  • Tageszunahme Geburt – Schlachtung (g/Tag) 382
  • Magerfleischanteil 64,2
  • Fundament, Punkte 2,87
  • Rückenspeck, mm 6,5
  • Gescanntes Gewicht, kg 98,8

Durchschnittsproduktion laut Eberprüfstation Bøgildgård

  • Tageszunahme 30 kg – Schlachtung (g/Tag) 1107
  • Futterverwertung 30 kg – Schlachtung (kg Futter / kg Tageszunahme) 2.08
  • Magerfleischanteil 65,1
  • Fundament, Punkte 2,90
  • Anteil geschlachteter Tiere (%) 26,3
  • Rückenspeck, mm 5,4
  • Gescanntes Gewicht, kg 99,1

Gennemsnitlige resultater for DanBred polte afprøvet i avlsbesætningerne

  • Daglig tilvækst, g/dag 30 kg – slagtning 1103
  • Daglig tilvækst, g/dag Fødsel – 30 kg 367
  • Kødprocent (%) 62,2
  • Styrke, point 3,15
  • Rygspæk, mm 7,9
  • Scanningsvægt, kg 98,0

Gennemsnitlige resultater for DanBred orner afprøvet i avlsbesætningerne

  • Daglig tilvækst, g/dag 30 kg – slagtning 1135
  • Daglig tilvækst, g/dag Fødsel – 30 kg 360
  • Kødprocent (%) 62,6
  • Styrke, point 3.08
  • Scanning measurement, mm 7,2
  • Rygspæk, mm 98,3

Gennemsnitlige resultater for DanBred orner afprøvet i avlsbesætningerne

  • Daglig tilvækst, g/dag 30 kg – slagtning 1143
  • Daglig tilvækst, g/dag Fødsel – 30 kg 382
  • Kødprocent (%) 64,2
  • Styrke, point 2,87
  • Rygspæk, mm 6,5
  • Scanningsvægt, kg 98,8

Gennemsnitlige resultater for DanBred polte afprøvet i avlsbesætningerne

Gennemsnitlige resultater for DanBred orner afprøvet på forsøgsstationen Bøgildgård

Average production results achieved by DanBred gilts in nucleus herds

  • Daily gain, g/day, 30 kg – slaughter 1103
  • Daily gain, g/day, birth - 30kg 367
  • Lean meat perctentage 62.2
  • Conformation, points 3.15
  • Scanning measurement, mm 7.9
  • Scanning weight, kg 98.0

Average production results achieved by DanBred boars in Nucleus herds

  • Daily gain, g/day, 30 kg – slaughter 1135
  • Daily gain, g/day, birth - 30kg 360
  • Lean meat perctentage 62.6
  • Conformation, points 3.08
  • Scanning measurement, mm 7.2
  • Scanning weight, kg 98.3

Average production for boar testing station Bøgildgård

  • Daily gain, g/day, 30 kg – slaughter 1097
  • Feed conversion, kg feed/kg gain, 30 kg – slaughter 1.93
  • Lean meat perctentage 63.2
  • Conformation, points 3.06
  • Killing out percentage 26.6
  • Scanning measurement, mm 6.0
  • Scanning weight, kg 97.8

Resultados de producción medios conseguidos por las cerdas jóvenes de DanBred en núcleos

  • Ganancia media diaria, g/día; 30 kg – sacrificio 1222
  • Ganancia de peso diaria, g/día; nacimiento – 30 kg 413
  • Porcentaje de carne magra 62,4
  • Conformación, puntos 2,94
  • Medición de escaneo, mm 6,4
  • Peso de escaneo, kg 99,3

Gemiddeld productieresultaat behaald door jonge
zeugen (< 1 jaar) van DanBred in kernbedrijven

  • Dagelijkse groei (g/dag), 30 kg – slacht 1222
  • Dagelijkse groei (g/dag), geboorte – 30 kg 413
  • Mager-vleespercentage (%) 62,4
  • Conformatie (punten) 2,94
  • Rugspekdiktemeting (mm) 6,4
  • Levend Scangewicht (kg) 99,3

cONTACT danbred

We can help you transition to DanBred genetics, technical services, transport and more. Book a time with us, and we will call you when it suits you.

danbred