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WIRRUNA POLL HEREFORDSGenetics for the commercial beef            producer                       Ian Locke              Wi...
Area:              3,560 Acs.                   (1,400 effective Ha)Rainfall:          708 mm winter dominant             ...
Ave                          Current Livestock      Enterprise                                 Annual Production         D...
   Brief Background       Established 1949 (63 years)       3rd generation       Ceased showing cattle in 1972       ...
160                                           Pasture Growth Curve - HolbrookPasture Growth Rate (kg DM/Ha)               ...
25                                            Cow energy requirementsCow Energy requirments                         20    ...
160                                                                         25                                           P...
THE PRODUCTION SYSTEM A Cow Herd Focus        Litmus test of genetics   Disciplined Approach to Breeding       All cat...
GENETICS High Level Performance Program     Long history of selection     Renown as one of the most well-recorded Heref...
THE PRODUCT Commercially focussed sale stock      Grass-fed bulls – naturally grown        Not over-fat and prone to ea...
   Breeding/Mating       Heifers joined at 14-15 months to calve as 2 year olds       Tight calving spread – Mate for 6...
Calving Ease since 1984Calving Ease                        Wirruna vs Overall Breed Average(Direct) EBV+6.0               ...
BENDING THE GROWTH CURVE     EBV (kgs)                 Comparison of Wirruna Growth EBVs over time70                  WPHS...
Progress since 1983 - EMA EBV          +3.5                              EMA - WIRRUNA          +3.0                Breed ...
IMF EBV                                Genetic Progress - IMF EBV +0.6 +0.5                           IMF% - WIRRUNA +0.4 ...
COMPARISON OF $INDEX VALUES                                              Wirruna Sale Bulls vs Overall Breed Average      ...
Wirruna poll hereford  presentation
Wirruna poll hereford  presentation
Wirruna poll hereford  presentation
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Wirruna poll hereford presentation

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Polled hereford in Australia
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Wirruna poll hereford presentation

  1. 1. WIRRUNA POLL HEREFORDSGenetics for the commercial beef producer Ian Locke Wirruna Poll Hereford Stud “Spring Valley” Holbrook NSW 2644
  2. 2. Area: 3,560 Acs. (1,400 effective Ha)Rainfall: 708 mm winter dominant (563mm over the 2000’s)Soils/Landscape: Highly variable ranging from heavy clay flats to granite based slopes & rocky hills. 80% arableFertility: Naturally acidic and inherently infertile ….but very responsive to fertiliser & lime inputsPastures: “Pastures are the powerhouse” Mainly improved perennial pastures and clover
  3. 3. Ave Current Livestock Enterprise Annual Production DSE %- No.s age 200,000+ kg beef cattle 75% 1,200 headSeedstock Beef Cattle Sell 150+ Poll Hereford (calve 500 Cows) Bulls/annum 12,000kg greasy wool 25%Prime Lamb Flock 3,300 prime lambs 3,700 ewes(LAMBPRO) (Stores) Surplus sheep 0 - 400 0-10%Backgrounding Feeder 0 - 100,000 kg beef cattle (depending onSteers (net) season)
  4. 4.  Brief Background  Established 1949 (63 years)  3rd generation  Ceased showing cattle in 1972  Seedstock Producer of the Year in 1995 Stud run under commercial stress conditions  Tightly managed  Feed for maintenance – not production  Fully recorded on Breedplan  Better genetic outcomes for commercial beef producer Run in large management groups  High quality genetic data Spring Calving  Run at stocking rate  Kg Beef produced/Ha focus
  5. 5. 160 Pasture Growth Curve - HolbrookPasture Growth Rate (kg DM/Ha) 140 120 100 80 60 40 20 0 -20 J F M A M J J A S O N D Months
  6. 6. 25 Cow energy requirementsCow Energy requirments 20 15 10 Weaning Calving 5 0 J F M A M J J A S O N D Months
  7. 7. 160 25 Pasture Growth Curve - HolbrookPasture Growth Rate (kg DM/Ha) 140 Cow Energy requirements 20 120 100 15 80 60 Calving 10 Weaning 40 20 5 0 -20 J F M A M J J A S O N D 0 Months
  8. 8. THE PRODUCTION SYSTEM A Cow Herd Focus  Litmus test of genetics Disciplined Approach to Breeding  All cattle run under commercial stress conditions  All cows and heifers joined for 6 weeks only  All heifers must have a live unassisted calf at 2 years  All cows must bring a live unassisted calf through to weaning; every year! “All cattle that fail these strict fertility hurdles are culled from the breeding herd – there are no favourites”
  9. 9. GENETICS High Level Performance Program  Long history of selection  Renown as one of the most well-recorded Hereford herds using Breedplan (5  rating)  Over 9,000 recorded cows and 6,000 birthweight records  Cattle run and recorded in large management groups  A leading Hereford herd for genetic gain & genetic merit ($7 gain/year - Grain-fed $Index) “A true genetic program, focussed on breeding, not feeding!”
  10. 10. THE PRODUCT Commercially focussed sale stock  Grass-fed bulls – naturally grown  Not over-fat and prone to early breakdown  Client friendly Helmsman sale  Spring and Autumn  All bulls independently assessed for structure and breeding soundness  Breed leading genetics  2010 born bulls average in the top 10% of the breed for all $Indices. Top 5% for Grain-fed & Grass-fed $Index “What you see is what you get!”
  11. 11.  Breeding/Mating  Heifers joined at 14-15 months to calve as 2 year olds  Tight calving spread – Mate for 6 weeks only  Cows must also rejoin in a six week period Herd structure  Young in age  Genetic gain production efficiency  age related problems  Retain at least 90% of heifers for mating  Sell cows over 8 years old (in steady state) Management  Screening & selection policies  A disciplined (but simple) approach – “Cow herd hurdles”  Cull for fertility – no exceptions and no favourites Easy-care cattle  Easy calving cattle (Management & Genetics) – target <5% dystocia in heifers - Zero tolerance culling policy  Non-interventionist - “Bad luck repeats itself”  Feed efficient – Cope with high stocking rate (“ride the condition score roller- coaster”) Genetics is important!
  12. 12. Calving Ease since 1984Calving Ease Wirruna vs Overall Breed Average(Direct) EBV+6.0 Calving Ease (Dir) WPHS+5.0 Breed Trend - Calving Ease (Dir)+4.0+3.0+2.0+1.0+0.0 Calving ease is an important trait that influences beef herd profitability. -1.0 Wirruna breed specifically designed heifer bulls for ease of calving. -2.0 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 Genetic Trend
  13. 13. BENDING THE GROWTH CURVE EBV (kgs) Comparison of Wirruna Growth EBVs over time70 WPHS 2010 Moderate Push early growth 61.9 WPHS 2000 Mature Cow60 WPHS 1990 Weight WPHS 1980 5050 45.840 Maintain moderate birthweights 27.730 26.3 24.820 17.110 10.9 20 2.1 Birth 200 day 400 day 600 day Mat cow Weight growth growth weight weight
  14. 14. Progress since 1983 - EMA EBV +3.5 EMA - WIRRUNA +3.0 Breed Trend - EMA +2.5 +2.0EMA EBV +1.5 +1.0 +0.5 +0.0 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10
  15. 15. IMF EBV Genetic Progress - IMF EBV +0.6 +0.5 IMF% - WIRRUNA +0.4 Breed Trend - IMF% +0.3 +0.2 +0.1 +0.0 -0.1 -0.2 -0.3 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10
  16. 16. COMPARISON OF $INDEX VALUES Wirruna Sale Bulls vs Overall Breed Average EBV (kgs)$120 $99 $98 Top 5% $103$100 $89 Top 5% $96 $90 Top 5% $90 Top 5% $87 $80 $73 $65 $66 $60 $60 Wirruna Sale Bulls average in the top Wirruna Sale Bulls $40 10% of the breed for $Index Breed Average EBVs Breeds Top 5% $20 $0 Supermarket Grass fed Grain Fed EU

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