Breeding goal

FOCUS ON MAXIMUM GENETIC GAIN

The DanBred breeding objective is based on the production of finishers which integrates weaner and finisher production with an emphasis on production economy. The DanBred breeding objective only includes traits which:

  • Make a positive difference to production costs
  • Has a measurable economic value
  • Are hereditary and show genetic variation
  • Can be measured directly or indirectly on a large scale

So the DanBred breeding objective include traits that result in the greatest possible benefit for the production economy. Responsible for the research and development of the DanBred Breeding System, is ‘Breeding & Genetics, SEGES, which revises the breeding objective at appropriate intervals. Each revision involves recalculating, and updates, the values used in a bio-economic simulation. The revision also includes relevant new traits which research and development projects have shown to be measurable, hereditary and of importance to the production economy.

The DanBred breeding objective was first defined in 2015 and has been revised again in 2018. The breeding objectives for DanBred Landrace and DanBred Yorkshire are identical, while the breeding objective for DanBred Duroc differs both in the economic weighting of each trait and in which traits are included. This is because DanBred Landrace and DanBred Yorkshire are used for sow production while DanBred Duroc focuses on the production of finishers.

Traits included in the breeding objective for DanBred Landrace and DanBred Yorkshire:

  • Daily growth (birth-30 kg and 30 kg – slaughter) shortens the production time to slaughter and decrease the cost for production.
  • Feed conversion is included in the breeding objective to increase finisher feeding conversion and reduce production costs.
  • Lean meat percentage is decisive in determining the settlement between the  abattoirs  and the pig producers.
  • Conformation is assessed as an overall score of the pig’s legs, back and posture. The aim is to reduce the risk of culling both the finisher and the sow due to leg and/or back problems.
  • Slaughter loss is part of the breeding objective defined as the increase in the carcass’ percentage of the live weight to the nearest percentage point.
  • Longevity (of sows): Longevity is defined as the likelihood that a sow will be mated after the first litter and serves as an indicator of the sow’s productive lifespan.
  • LP5 is the number of living pigs in the litter five days after farrowing. This trait is highly genetic correlated to number of weaned piglets and reduce the mortality from birth to weaning.

The figure below shows the composition of DanBred Landrace and DanBred Yorkshire (called sow breed) as well as the economic contribution, expressed as a percentage, each trait makes to genetic gain.

Traits included in the breeding objective for DanBred Duroc:

  • Male fertility is the number of living pigs in the litter.
  • Daily growth (birth-30 kg and 30 kg – slaughter) shortens the production time to slaughter  and decrease the cost for production.
  • Feed conversion is included in the breeding objective to increase finisher feeding conversion and reduce production costs.
  • Lean meat percentage is decisive in determining the settlement between the abattoirs and the  pig producers.
  • Conformation is assessed as an overall score of the pig’s legs, back and posture. The aim is to reduce the risk of culling both the finisher and the sow due to leg and/or back problems.
  • Slaughter loss is part of the breeding objective defined as the increase in the carcass’ percentage of the live weight to the nearest percentage point.

The figure below shows the composition of DanBred Duroc as well as the economic contribution, expressed as a percentage, each trait makes to genetic gain.

 

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