Mathew & Cherie Coddington
“Glenwood” 39R Dilladerry Road
Dubbo NSW 2830 Australia


  • 17th Sept Roseville Park On-Property Sale

Roseville Park Merino Stud is one of Australia’s leading seedstock Merino ram producer’s.

At Roseville Park, we offer you a quality genetic package that takes the guess work out of your ram selection by providing you with a guaranteed article backed up by facts not fiction.. Roseville Park constantly benchmark their sheep and are industry leaders at shows , Sales, Sheep Genetics (ASBV’s) and Central test sire Evaluation.

Roseville Park prides itself on being ‘ahead of the times” by being the first to adopt and implement Industry initiatives on Merino Breeding and Genetic Selection which are coupled with over five generations of ram breeding experience. See what we do that others don’t and see why our clients run profitable Merino enterprises by producing more quality wool, more meat and more lambs.





Social News

RP team of Grant Judd and Angus Dawson blade shearing 53 March shorn Reserves for this year’s displays and sale team, 7 months wool ... See MoreSee Less

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Roseville Park blood wethers Dominate the Bathurst Merino Association wether trial. Results analysed by NSW DPI have been released from the latest wether trial with the top three teams for gross returns on fleece valuations going to Roseville Park blood flocks. There were 17 local teams of 15 wethers at Bathurst trial in NSW.
Coming in first was Scott Seaman’s “Fosterfield” team which averaged 8.85kg / head with an average fleece value of $81.90 and a gross team value of $1228.76 for 15 wethers.
2nd place went to Brian Seaman “Fosterfield” team which averaged 8.89 kg / head with an average fleece value of $78.66 and a gross team value of $1180.39 for 15 wethers.
3rd place went to Peter Moore’s “Blink Bonnie” team which averaged 9.73kg/ head with an average fleece value of $79.40/ head and a gross team value of $1112.22 for 14 wethers.
The Roseville Park blood teams had the only individual wethers producing over 9kg skirted fleeces.
The heaviest skirted fleeces were - Brian Seaman- 9.5 kg 18.4 micron, $99.45 value, 9.2kg 21 micron $80.68 value
Scott Seaman- 9.2 kg 19.3 micron $87.86 value
Peter Moore- 9.1 kg skirted 21.0 micron $78.53 value.
Congratulations to all three clients on running profitable Merino enterprises!!
Source- B Seaman. Bathurst NSW.
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One Oak Merino Stud son of Roseville Park 09-0014 tops Superior Sires Dual Purpose + Index.
The recently released 26th edition of Merino Superior Sires 2020, published by the Australian Merino Sire Evaluation Association (AMSEA), reports the results of 350 sire entrants from the 2015-19 drops entered at 11 sire evaluation sites across the major wool producing areas of Australia.
Merino Superior Sires reports Australian Sheep Breeding Values (ASBVs) for each sire for a range of measured traits including clean fleece weight, fibre diameter, staple strength, body weight, eye muscle depth, fat depth, plus worm egg count.
Sires are ranked on dual purpose index (DP+), Merino production plus index (MP+), fibre production plus index (FP+) and wool production plus index (WP+).
Ranked number one for the Dual Purpose +index was One Oak No.2, 130004., who is a son of renown industry impact sire RP09-0014. This ram also ranked 2nd in both the MP+ and WP+ indexes.

This 2013-drop ram was purchased by Jock MacRae of Eilan Donan Merinos at Adelaide in 2015 and has now been used in four other flocks in Merino Select.
Ranked 1st in the MP+ and WP+ indexes was a WA ram by Woodyarrup stud, 140149, who also ranked 2nd in the DP+ and FP+ indexes.
But according to AMSEA executive officer and principal of BCS Agribusiness Ben Swain there is more to the top rankings than meets the eye and if people don't understand the reason behind why an animal is high indexing, it can often prove "dangerous" when making breeding decisions.

"The Woodyarrup ram is scattered along the top of all those indexes..... It's rare to get a ram that will perform that well from a dual purpose index through to a fibre production index because they are very different production systems," Mr Swain said.
He's extremely high clean fleece weight is a major driver of all of the indexes, so a ram like that will sit at the top of a lot of the indexes because all of the indexes are driven by clean fleece weight to a significant extent.
Even the dual purpose index has a significant emphasis on clean fleece weight. But he is not the ideal ram for dual purpose production, he is the ideal animal for wool production."
However, he said a ram such as One Oak 2, although he is not as "extreme" in clean fleece weight, he is very good for a lot of other traits.
If you're not a breeder that really wants to really push fleece weight - you should be more interested in eye muscle depth, fat, and repro," he said.
If you look at the Moojepin ram, he is perfect for fat and muscle, but he sits down at position 12 because he is low for fleece weight, but he is terrific for fat and muscle." Courtesy. The Land newspaper 21/1/21
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Check out this year’s MLA Lamb Campaign for 2021.
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More on farm research from our research partner Greg Sawyer on the benefits of the six month shearing program that we have been doing for the past 5 years. Story courtesy of Farm online National.
Shearing twice a year has the potential to reap large benefits for woolgrowers!
Pregnant Merino ewes that are shorn twice a year spend more time grazing, put on more weight and are likely to have healthier lambs with finer fleeces, researchers from The University of Queensland and Elders have found.

Research report co-author and Elders Central Western NSW district wool manager and livestock production advisor Gregory Sawyer said earlier trials during the same research at commercial farms in the NSW Tablelands, also revealed a new non-invasive pregnancy test for ewes.

We discovered that you can identify the current pregnancy status of a ewe by analysing the progesterone levels in a wool clipping from the top knot, which is an easy spot to access on sheep in a race," Mr Sawyer said.

"It's a world first and you can use wool samples collected during normal shearing or any other time you have them in a race to check pregnancy."

Wool samples can also be used to measure levels of the stress hormone, cortisol. The researchers collected samples throughout the different stages of pregnancy and found cortisol levels were significantly lower in twice-shorn ewes.

We believe the animal actually feels more relaxed with less wool to carry and is comfortable to graze more," Mr Sawyer said.

Digibale smart-tag data showed the twice-shorn ewes spent 46 per cent of their time grazing, compared to just 35pc for those shorn once.

That extra feeding time converted into higher body condition scores (BCS). The BCS of ewes shorn once decreased continuously throughout pregnancy, while twice-shorn ewe BCS increased between pre-joining and mid-pregnancy, followed by a slight decrease between mid- and late pregnancy.
Mr Sawyer said the higher BCS of a twice-shorn ewe would also help boost lamb survival rates.

"Because its mother is eating more, there is getting a greater plane of nutrition coming through and the lamb is likely to benefit from a higher birthweight and a better milk supply," he said.
Assessment of the lambs showed those with twice-shorn mothers had visually finer wool by 0.8 microns with higher average comfort factor and the spinning fineness difference between shearing frequency groups was 0.9 microns.
Mr Sawyer said the research showed shearing twice a year had the potential to reap large benefits for woolgrowers in the right circumstances.

If you shear every six months and can get 65 to 70 millimetres, that gives you 140mm a year, whereas those sheep would normally only cut you 100-110mm," he said.

"At 16.9 microns, wool is worth 1846 cents a kilogram but at 16.3 microns it jumps to 2030. The visual differences might not be statistically significant for a small sample size like this trial but they are very significant to growers financially.

"It's certainly worth trailing on commercial farms if you have the right set up and season to support shearing ewes twice," Mr Sawyer said
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