Selection for Lifetime Production

Complexity of Lifetime Production

Process of Genetic Improvement Detailed and meaningful data capture Accurate prediction of genetic merit Meaningful selection objectives and targets

Data Sources SIRE LINE DAM LINE MULTIPLICATION CBVs EBVs and selection decisions MULTIPLICATION COMMERCIAL Breeding stock GN COMMERCIAL CROSS BRED SLAUGHTER PIGS SIRE LINE DAM LINE GN Progeny Performance Data PICTraq Database Commercial Sow Performance Data Objective is to select within pure lines for commercial crossbred performance Sire line & Dam line Sire Line Piglet Performance: Mortality Pre-weaning Nursery Grow/finish Production traits Carcass traits Dam Line Sow performance Sow mortality Reproduction Contemporary crossbred information used in BLUP to increase the accuracy of selection for commercial crossbred improvement objectives subject to G x E interaction (e.g., growth)difficult or impossible to measure sufficiently in pure line selection candidates (e.g., reproduction, mortality, congenital defects, meat quality) Commercial Progeny Performance Data

Dam Line Programs April 2011

Purebred and Crossbred Sows Contributing to Genetic Evaluation

GNX FIRE Test Implemented in May 2010 Enhanced Differentiation Pedigreed commmercial pigs Terminal Maternal Heavy slaughter weights Approximately 290 lbs. Low energy, pelleted diets

Prediction of Genetic Merit Basic principle… Resemblance between relatives Meaningful data Accurate pedigree Historically, we have utilized data flows combined with pedigree and small amounts of genomic information for prediction of genetic merit (i.e. EBV’s, index values, etc.)

Initial Implementation of New Era of Genetic Technologies Genomic Selection Initial Implementation of New Era of Genetic Technologies Scrotal Hernia Finisher Mortality Total Born

What’s Next? Single Step Genomic Evaluation Information extracted from the DNA can be used mainly in two ways: Genetic markers: estimate the effect of each SNP on each trait. Genomic relationships: estimate the actual fraction of genes identical by descendent

How many identical genes 2 pigs share? Resemblance Between Relatives EBV Based on pedigree, we assume it’s 50% between ALL full-siblings

How many identical genes 2 pigs share? Resemblance Between Relatives EBV Based on pedigree, we assume it’s 50% between ALL full-siblings Genomic Information shows it is between 40 and 60%

Single Step Genomic Evaluation Where’s the Benefit? Instead of assuming relationships based only pedigrees we define relationship on pedigree + DNA, Therefore for every animal and every trait our genetic evaluation is improved… Constantly linking newest phenotypic data with Pedigree information augmented by DNA Delivering a significant cumulative gain in accuracy of selection.

Single Step Genomic Evaluation Increasing Rate of Genetic Gain TRAIT ACC EBV ACC GEBV increase Total Number Born 0.36 0.40 11% Stillborn % 0.28 0.33 18% Litter weaning weight 0.16 0.20 25% Interval weaning - mate 0.11 0.14 27% Survival birth - weaning 0.29 0.34 17%

Genetic Differentiation = Profitability Enhancement If selection objectives and intensity are aligned and focused, PIC differentiation in the sow farm should be delivered via delivery of high quality weaned pigs at the lowest possible cost… Maximum efficiency per litter Maximum efficiency of inventory Maximum efficiency in utilization of inputs

PIC Commercial Female Performance

PIC Commercial Female Performance

PIC Commercial Female Performance

Data currently captured in PIC genetic improvement program Lifetime Production and Efficiency Targeting and Delivering the Key Drivers Data currently captured in PIC genetic improvement program

Camborough Potential

Example of Lifetime Performance GP 1070 sow in 6th parity with 26 NBA and 25 of those were weaned with help from foster sows

53.3 pigs TB/sow/yr 51.1 pigs BA/sow/yr Parity 1 114 days gestation P1 18TB 16BA 140 Days to Parity 2 19TB 19BA 143 Days to Parity 3 22TB 20BA 139 Days to Parity 4 18TB 18BA 140 days to Parity 5 17TB 17BA 144 days to Parity 6 26TB 26BA…25 weaned Lifetime Performance (so far) 820 days of herd life 120 pigs Born 116 Pigs Born Alive 0.146 pigs TB per day in farm 0.141 pigs BA per day in farm 53.3 pigs TB/sow/yr 51.1 pigs BA/sow/yr