Bluetongue Is Testing Britain's Rams Now, and Next Summer's Lamb Supply Depends on the Results

MeatBorsa's take

This section is our reading of the news, not reported fact. The confirmed figures follow below, so you can check our view against the data.

We think the lamb story for 2027 is being written right now, in the tupping fields of England. Rams are going to ewes this month. Lambs from that mating are born in spring and reach the plant from early summer. If a meaningful share of rams is not fertile after bluetongue, the effect will not show in this autumn's prices. It will show in the number of lambs available next year.

That matters because the supply side was already thin. England's breeding flock has been shrinking for several years, and bluetongue is now adding a fertility problem on top of a numbers problem. For a buyer of British lamb, we would not wait for scanning results in winter to find out. We would ask suppliers now what share of their ewes were covered by tested or vaccinated rams.

What this could mean in practice: we expect UK lamb to stay firmly priced into the 2027 season, and we expect more exporters and processors to compete for the same smaller pool of finished lambs. Buyers who rely on one UK origin for spring and summer programmes may want to talk volumes early and keep a second origin ready.

What we assume, and why we could be wrong

Our view rests on a few assumptions about how the market behaves:

• The fertility problem is wide enough to cut the lamb crop, not only a few hotspot flocks. The test results we have come from one Devon practice, in the county with the most cases, and from farms that chose to test. National impact could be smaller.
• Farmers cannot easily fix it. In practice, many will use more rams per group of ewes, replace rams that fail tests, or buy vaccinated rams. If they do this well, the loss in lambs per ewe could be modest.
• Buyers will not simply accept higher prices. If retail and foodservice demand for lamb is weak, processors may be unable to pass a supply squeeze through to the price. That would limit any rally.
• Vaccine access improves. Four in ten farmers who tried could not get vaccine this season. If supply is better in 2027, the problem could ease for the following lamb crop, though not for the one being mated now.

What the confirmed facts say

Farmers Weekly reported on 8 October that Dr Nick Roper of Torch Farm and Equine in Devon had tested about 800 rams. Around half were infertile, against roughly 20% in a normal year. He said vaccinated rams showed considerably better fertility, and he rejected the idea that vaccination itself caused the infertility. Devon has the most bluetongue-positive premises, at 1,075.

The same Farmers Weekly report counted 2,878 bluetongue cases in the 2026-27 season so far, compared with 348 in the whole of 2025-26. Other outlets quote slightly different totals because they were published on different days. Agriland reported 2,408 confirmed cases in the UK by the end of September.

The National Sheep Association ran a survey from 21 August to 27 September 2026 with more than 1,400 responses. It was reported on 6 October by FarmingUK and Agriland. The headline numbers:

• 65% of respondents said they definitely plan to vaccinate against BTV-3 in 2027.
• 40% said they tried to get vaccine this season and could not.
• 74% would be open to ordering vaccine in advance through their vet, representing demand of around 350,000 doses. FarmingUK notes this is not an estimate of total sector demand, and that some vaccines need two doses per animal.
• 73% said they would prefer to buy vaccinated sheep when replacing breeding stock.

On the flock itself, a Farmers Weekly editorial on 7 October said England's female breeding flock was almost 7.1 million in 2022 and is now below 6.2 million. It said the flock fell by more than 240,000 head in the year to June 2026.

What we are watching next

Three things will tell us whether our view holds. First, scanning results from the autumn-mated flocks in the south and west of England, which will show actual conception rates. Second, whether UK-wide flock figures, expected later this autumn, confirm the England decline. Third, how quickly vaccine orders for 2027 are filled, because that decides how many rams and ewes are protected before the next vector season.

For buyers and sellers of sheepmeat, the practical question is the same: how many lambs will there be in June, and who has them contracted?

Sources

Bluetongue hits ram fertility hard in hotspot areas - Farmers Weekly

Four in ten farmers failed to get bluetongue vaccine during outbreak - FarmingUK

Survey predicts 350,000 BTV3 doses needed for 2027 flock health - Agriland UK

Editor's View: Bluetongue is a fresh assault on national flock - Farmers Weekly

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