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Wether Trial Results
Comprehensive analysis of national wether trial results over the last 12 years reveals that Severn Park blood flocks were at the highest comparative levels of performance and profitability.
The analysis by NSW Agriculture examined performance differences between 192 bloodlines in 67 wether trials conducted in NSW, SA, WA, Tasmania and Victoria from 1987. Criteria examined were fleece weights, fibre diameter and other wool quality traits.
Severn Park has consistently performed in the very top level for heavy cuts of fine micron and consequent high gross margins/dse (in the top 5)
Bloodline deviations for clean fleece weight and fibre diameter
Reproduced with permission NSW Agriculture.
Graph 1: Reveals Severn Park placed near the top in the optimum quadrant of high fleece weight and fine micron.
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Gross Margin per DSE contour lines for a Moderate micron premium (11% MP) 1993-97 calendar years.
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Gross Margin per DSE contour lines for a Low micron premium market (7% MP) 1995-96 selling season.
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 Reproduced with permission NSW Agriculture. |
 Reproduced with permission NSW Agriculture. |
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Gross Margin per DSE contour lines for a High micron premium market (15% MP) 1994-95 selling season.
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 Reproduced with permission NSW Agriculture. |
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Graph 2: Reveals Severn Park placed near the top in gross margins/dse for all three wool market scenarios of low, moderate and high micron premiums.
Significantly, these wether trial results reflect the genetic status of Severn Park up to 10 years ago. Since then, by fully implanting the SRS® system and its major gene functions, Severn Park has shifted upwards significantly - shedding two microns and further improving fibre quality, whilst maintaining its heavy cuts.
W/D3 and Bloodline Performance
Further analysis of wether trial data examining gross margins per head, calculated on the important measure W/D3 reveals that Severn Park continues to perform impressively.
- W/D3 gives an estimate of the value of the fleece comparable under different environmental conditions and stocking rates.
- Severn Park's position is based on its wether trial status (a genetic status of mid to late 1980s) and our latest commercial performance on farm.
- Severn Park is placed in an advanced position for $ returns - over double that of flocks of lower genetic status.
- As the SRS® major gene functions are embedded further, our improvement continues to accelerate (see 10 year contrast).
- This status is calculated without taking into account the increasing demand for SRS® wools in the market, nor surplus sheep or lamb production returns.
- In summary, we know the SRS® pathway used at Severn Park can at least double $ returns.
Source: NSW/VIC wether trials 1984-1995 (Coelli et.al 1996)
Average wether age 3.5 years.
SRS® is the Proven Pathway to double Returns --
to not just surviving but thriving in wool growing in the future.
[W/D3 - To assess whether wool pays, take from your wool clip figures an average cut x Yield %, express the result in grams (kg x 1000) and divide by the average micron of your clip, cubed = W/D3 . This ratio is independent of year to year nutritional effects on fleece weights and FD - see work of Ferguson et al (1949) and Daly and Carter (1955).]