Crossbred entries excel in RNA’s 2021 Wagyu Challenge

Jon Condon, 05/08/2021

Cattle on feed at Smithfield’s Sapphire feedlot near Goondiwindi as part of the 2021 RNA Wagyu Challenge, fed over 370 days.

CROSSBRED entries have excelled in Brisbane Show’s 2021 Wagyu Challenge, results from which were released overnight following the recent cancellation of this year’s Ekka due to COVID.

The 370-day Wagyu competition fed at Smithfield Cattle Co’s Sapphire specialist Wagyu feedlot near Goondiwindi this year attracted 21 entries – each teams of seven steers, totalling 147 head – representing everything from Wagyu x Angus F1s to F2s-F4s, and Fullblood Japanese Wagyu.

Performance was measured over four criteria – feedlot performance, carcase quality and value, and eating quality derived from taste panel testing.

Typically within a genetic spectrum like this, the F1 cattle will tend to stand out in the feedlot weightgain end of the competition, while the higher-content cattle will tend to dominate the carcase quality and carcase value assessment.

While that was true to an extent again this year, there is no denying that lower content cattle dominated the overall results in 2021.

Overall champion pen this year was a pen of second cross (75pc) Wagyu steers from Central Queensland Wagyu breeder Darren Hamblin, Strathalbyn, Sarina, North Queensland.

Proving to be excellent ‘all-rounders’ in all four phases of the competition, the Hamblin entries topped the carcase quality standings (including the individual champion carcase) and finished second for carcase value, while also producing solid average daily gain performance in the feedlot of 0.82kg/day. The group finished sixth of 21 entries in the beef taste test phase.

All of Hamblin seven entries this year were sired by Fullblood bull Moyhu D 507, out of F1 dams.

In terms of key carcase performance metrics, Hamblin’s overall champion pen produced camera-measured marbling scores ranging from 7.4 to 12, and averaging 9.4. Intra-muscular fat ranged from 25pc to 41pc, while marbling fineness was mostly in the high 30s to mid-forties.

Eye muscle area measurements were irrelevant for Australian audiences, because a different Japanese quartering site was used, making normal square centimetre figures look unusually low. The individual carcase champion was the marbling score 12 carcase, the highest in the competition, scoring 82/100 carcase points.

The championship winning pen finished second overall for carcase value, averaging $5265 per head. Significantly, the single top Hamblin performer for carcase value from the champion pen, at a whopping $6154, produced a 10.5 marbling score, and the group’s highest carcase weight of 436.5kg.

Runners-up in the overall standings were a pen of Poll Wagyu (96pc) from Poll Wagyu Pty Ltd – a syndicate representing Darren Hamblin and Tasmania’s Hammond Brothers, which has pioneered the development of a Poll Wagyu purebred strain in Australia.

The primary challenge faced by the Poll Wagyu syndicate in selecting for Poll genetics (see Beef Central’s earlier report) was in also maintaining high performance in meat quality, marbling and growth characteristics. This year’s Brisbane Show result again reinforces that the syndicate has been successful in doing so.

The runners-up produced average marbling scores of 7.8, with the highest individual entry producing a score of 9.3. Carcase weights averaged 444kg, with most entries still showing four teeth.

Placed third in overall standings was a Fullblood pen of steers entered by Taldra Cattle Co, Kaimkillenbun Queensland, which topped the carcase value section (see details below).

Entries this year were processed in late June at JBS Beef City.

Here’s a quick wrap-up of results from the four individual parts of the 2021 RNA Wagyu performance competition:

Feedlot weightgain:

In the feedlot weightgain section, F1 entries dominated, as is normally expected.

Both first and second place went to F1 entries from Richard and Dyan Hughes, Wentworth Cattle Co, Clermont, producing average daily rates of gain of 1.159kg and 1.097kg respectively. Third place went to McIntyre Agriculture, Goondiwindi, also with F1s, averaging 1.058kg/day.

Highest gaining individual steer also came from Wentworth Cattle Co, gaining at 1.29kg/day – the highest performance for a single beast yet recorded in this competition, tracing back four years.

Smithfield Cattle Co group livestock manager Ryan Brown told Beef Central this year’s competition cattle had fed very well at Sapphire, with next to no health concerns. All entries received a single pre-entry shot of Bovishield MH-One, followed up with a second shot at induction.

Highest individual weightgain steer exhibited by Wentworth Cattle Co, Clermont

Even though Bovishield is marketed as a single-shot BRD product, as the human health field is currently discovering, additional (in this case, third) shots of Pfizer and Astra Zeneca are now being adopted in countries like Israel, for even higher levels of human COVID protection.

“I find Bovishield most effective, with a second shot as well,” Mr Brown said.

Before offering figures on average daily gain and feed efficiency, Mr Brown pointed out that the RNA Wagyu Performance Class was, in effect, three separate performance classes – F1, F2-F5, and purebred/Fullblood. All performed differently, with the higher the Wagyu content, the lower the expected performance.

The entire mob (F1-Fullblood) this year averaged 0.88kg/day gain, with dry-matter feed conversions of 11.3:1 (kilos of feed per kilo of bodyweight gain). Average start weight at feedlot entry among all entries this year was 368kg. Exit weight at close-out averaged 698kg.

While feed efficiency in Wagyu cattle was perhaps a lower priority than in conventional cattle, with a greater focus on quality traits, there was still a very large variance seen between best and worst in the feedlot this year.

“The most feed efficient animal in a Wagyu pen might be $100 more cost effective than the least efficient animal, but truth be told, if you can increase by one marbling score, that’s worth another $300 per beast,” Mr Brown said. “Gain has to be kept in perspective with Wagyu.”

Carcase quality:

As referenced above, Darren Hamblin’s overall champion pen (second cross, or 75pc Wagyu) topped the carcase quality division, producing not only high marbling but consistent marbling across all seven steers. Marbling scores in the pen ranged from 7.4 to 12, and averaged 9.4.

Second in the competition for meat quality was a pen of fourth and fifth-cross (92pc Wagyu) steers exhibited by Alan Hoey from Allora on Queensland’s Darling Downs.

The Hoey pen averaged 8.2 for marbling, but was dragged down by a couple of mower performers in the 5’s.

Carcase value:

The key message from results for carcase value from this year’s competition was that while high marbling performance is obviously important, it was the carcases that combined high marbling with heavy carcase weight that produced the real elite performance in value rankings.

Topping the carcase value section was a Fullblood Wagyu pen of steers from Taldra Cattle Co, Kaimkillenbun, Queensland, producing an average carcase value among its seven entries of $5496.

The pen achieved this through marbling scores averaging a little above 8, and carcase weights averaging close to 470kg.

Single highest value carcase in this year’s competition was one of Taldra Cattle Co’s Fullblood (100pc Japanese Wagyu) entries, which produced a value of $7078.50.

It achieved this through not only producing premium marbling and IMF (camera-based marbling score of 8.9, IMF of 30pc), but also delivering the competition’s single heaviest carcase weight at slaughter of 550kg. In essence, high $/kg due to good marbling performance, combined with high carcase weight equals big cheque.

How was the high carcase weight achieved? The steer was certainly the heavier in the competition for feedlot entry weight, at 526kg. But he also put on another 400kg during the course of the 370 day competition, producing an ADG of 1.08kg. His exit weight before slaughter was a prodigious 926kg, while still only four-tooth. This ranked him as possibly the heaviest carcase weight ever seen in the four years this competition has run.

While one of his pen-mates from Taldra produced even higher weightgain and ADG (gaining at 1.2kg/day, producing a total gain of 443kg), his starting weight was lower, and marbling score more moderate, meaning less kilograms in the carton, at lower value.

Beef Taste test:

The final stage of the competition, using taste panel testing of cooked samples, produced a win for the Poll Wagyu Pty Ltd’s purebred entries mentioned above, followed by Fullblood entries from Sunland Cattle Co, Moura and the Australian Agricultural Co.

Beef Taste test winner from Poll Wagyu Pty Ltd – second cross Wagyu


  • Given the extreme length of longfed Wagyu competitions like the RNA’s, next year’s competition entries have already been on feed at Smithfield’s Sapphire Feedlot for the past two months. The will exit the feedlot around the end of June next year.


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  1. ANGUS BLANCO Javier Betancourt T, 27/08/2021

    Very interested from Colombia in Australian connections. To produce Wagyu beef as australian base in Colombia.

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