> ## Content Index > Fetch the complete content index at: https://www.organicfoodtogether.nz/llms.txt > Use this file to discover other available public pages before exploring further. # Nobody Is Building a Franken-Cow. Here's What They're Putting Inside One. - URL: https://www.organicfoodtogether.nz/nobody-is-building-a-franken-cow-heres-what-theyre-putting-inside-one/ - Published: 2026-10-31T17:30:00.000Z - Updated: 2026-10-31T17:30:00.000Z - Description: AgriZeroNZ just raised another $117 million. Its first product is a capsule of synthetic bromoform for finishing beef cattle. It does nothing for the animal, farmers say they don't want it, and its effect on the climate is too small to measure. So why is it coming? - Author: Luke Nicholas - Tags: Franken-Cow series, beef, Methane, regulation, organic standards New Zealand AgriZeroNZ's board chair has a picture of the cow of the future. It eats grass grown from a treated seed that makes less methane. It carries a bolus or a vaccine aimed at the microbes in its stomach. It might be wearing a device that deals with nitrous oxide. Rob Hewett told RNZ some of these products could be "stacked" on the same animal. That was the bit that made me think of Frankenstein. It turns out to be the wrong monster. Nobody is redesigning the cow. They are designing things to put inside it. ## The cow stays a cow On 5 October 2026, AgriZeroNZ [announced another $117 million](https://www.agrizero.nz/news/agrizeronz-secures-dollar117m-funding-boost-welcomes-alliance-and-farmlands?ref=organicfoodtogether.nz). The Government matches private money dollar for dollar, and the total raised is now $308 million. AgriZeroNZ says it has put more than $80 million into 21 projects since 2023, across inhibitors, probiotics, genetics, pasture, vaccines and wearables. "Genetics" sounds like the Frankenstein part. It isn't. Cows naturally differ in how much methane they make from the same grass, and the trait is passed on, according to a [2018 report on farm emissions options](https://www.mpi.govt.nz/dmsdocument/32128/direct?ref=organicfoodtogether.nz) written for the Biological Emissions Reference Group. MPI's [October 2025 progress report](https://www.mpi.govt.nz/dmsdocument/70757/direct?ref=organicfoodtogether.nz) says LIC and CRV have shown low-methane dairy bulls pass the trait to their daughters. That is breeding. Farmers have done it for centuries. I went looking for a mad scientist. I found a regulatory filing. ## First in: a capsule A bolus is a heavy capsule swallowed into the rumen, the big first stomach, where it sits and slowly releases what's inside. The first AgriZeroNZ-backed product likely to reach farmers is a bolus from Auckland company Ruminant BioTech. AgriZeroNZ said on 5 October it was still going through regulatory approval. What's inside is tribromomethane, better known as bromoform. A [2024 Gazette notice](https://gazette.govt.nz/notice/id/2024-go4474?ref=organicfoodtogether.nz) for an early version lists 36g of it in a 165g bolus, working "for up to 4 months". Bromoform is the compound that lets a red seaweed, Asparagopsis, cut methane. Ruminant BioTech doesn't use seaweed. Its chief executive, Tom Breen, told [AgFunderNews](https://agfundernews.com/ruminant-biotech-eyes-canada-as-launchpad-for-global-expansion-with-5-6m-research-program?ref=organicfoodtogether.nz) the company buys synthetic bromoform from a third party. The company calls its product "plant-based". That appears to describe the packaging: [Beef Central reports](https://www.beefcentral.com/news/methane-feed-additive-news-long-payout-product-launched-sea-forest-lists-on-asx/?ref=organicfoodtogether.nz) the casing is a biodegradable, plant-based bioplastic. ## Who gets one Not dairy cows. Not breeding cows. The version going through approval is called Emitless. RNZ, [republished in Farmers Weekly](https://www.farmersweekly.co.nz/technology/beef-farmers-likely-first-in-line-for-emissions-reducing-livestock-pill/?ref=organicfoodtogether.nz), reported its instructions rule out cattle intended for breeding and cattle producing milk for human consumption. New Zealand Food Safety described it as a bolus for cattle weighing 350kg to 450kg. AgriZeroNZ chief executive Wayne McNee said the plan is one bolus per animal in its lifetime. So this is for young cattle being grown out for meat. Beef + Lamb's [August 2026 stock survey](https://beeflambnz.com/sites/default/files/2026-08/Stock-number-survey-30-June%202026.pdf?ref=organicfoodtogether.nz) estimates 3.96 million beef cattle, about 1.02 million of them breeding cows and heifers. That leaves roughly 2.9 million animals being finished for slaughter. Beef + Lamb says much of the recent growth in that group is dairy-origin calves raised for beef. The dairy industry's surplus calves are in line for a bolus, even though their mothers are not. A [2020 study of New Zealand beef systems](https://www.nzsap.org/system/files/proceedings/impact-trait-genetic-gains-methane-emissions-nz-beef-and-dairy-farms.pdf?ref=organicfoodtogether.nz) modelled steers finished at 20 months. An animal of 350kg to 450kg is in the back half of that life. The bolus goes in during finishing, the last stretch before the works. Sheep may follow. In 2022 the company said it was [developing boluses for smaller cattle and sheep](https://ruminantbiotech.com/methane-inhibitor-bolus-could-reduce-emissions-by-70/?ref=organicfoodtogether.nz). ## What the cow gets out of it Nothing that I could find. The bolus shuts down a normal part of digestion: the microbes in the rumen that turn grass into methane. It isn't for the cow's health. It would be one more entry on [the long list of things a New Zealand cow is given in its lifetime](https://www.organicfoodtogether.nz/what-is-a-new-zealand-cow-given-in-its-lifetime/). Some of AgriZeroNZ's tools may also lift productivity, McNee told an agriculture and climate conference in late April. The bolus, he said, does not, [according to RNZ](https://www.farmersweekly.co.nz/technology/farmers-should-be-paid-to-use-methane-busting-tools-agritech-leaders/?ref=organicfoodtogether.nz). That matters, because it means a farmer gets nothing back for using it. "In the absence of productivity improvement, which is often quite hard to prove, there will need to be an incentive," McNee said. Ruminant BioTech's market access director, George Reeves, told the same conference he wanted a broader incentive scheme in place by 2028. Some public money is already moving. In June the Government committed [up to $51 million over three years](https://www.ruralnewsgroup.co.nz/rural-news/rural-general-news/agrizero-nz-51m-emissions-early-adoption-accelerator?ref=organicfoodtogether.nz) to an AgriZeroNZ programme to speed up farmers' uptake of emissions tools, co-funding projects that demonstrate them on farms. Someone has to pay a farmer to put it in the cow. What happens to the animal over time is still being studied. MPI's [October 2025 report](https://www.mpi.govt.nz/dmsdocument/70757/direct?ref=organicfoodtogether.nz) says the Ag Emissions Centre is starting a long-term trial into whether the rumen adapts to methane inhibitors. The label rules out breeding cattle. It doesn't say why. ## The nearest real-world test Bromoform hasn't been used at scale in New Zealand. The closest thing to a national experiment happened in Denmark, with a different methane additive. Denmark required its conventional dairy farmers to cut methane from 2025, and many turned to DSM-Firmenich's Bovaer, a feed additive based on a compound called 3-NOP. In late 2025, farmers reported cows collapsing, milk yields falling and diarrhoea, UK Farmers Weekly [reported](https://www.fwi.co.uk/livestock/health-welfare/doubts-persist-after-bovaer-study-finds-no-clear-impact?ref=organicfoodtogether.nz). Aarhus University then studied 73 herds and about 27,650 cows. It found no clear overall effect on production, disease or deaths. It also said some individual herds had "serious problems". The study's leader, Professor Niels Bastian Kristensen, said: "We have a number of reports where we have to agree with dairy farmers that what they have experienced has been devastating." A separate survey of 644 herds found about two-thirds reported some drop in production or feed intake. Welfare studies run until 2028. Bovaer is not bromoform. But Denmark shows what happens when a methane additive moves from trial pens to thousands of real farms. The averages can look fine while some farmers watch their cows go down. ## Two agencies, two answers Is bromoform safe to put in a food animal? It depends who you ask, and when they last looked. The US Environmental Protection Agency [classes bromoform](https://iris.epa.gov/ChemicalLanding/&substance%5Fnmbr=214?ref=organicfoodtogether.nz) as a "probable human carcinogen", based on tumours in rats and mice. That assessment was last updated in 1990\. The International Agency for Research on Cancer [looked again in 1999](https://inchem.org/documents/iarc/vol71/069-bromoform.html?ref=organicfoodtogether.nz) and rated it "not classifiable" for cancer in humans. Ruminant BioTech's [FAQ](https://ruminantbiotech.com/faqs/?ref=organicfoodtogether.nz) says studies found no measurable bromoform in meat or fat at the minimum effective dose. Bromoform is also a by-product of [chlorinated drinking water](https://www.organicfoodtogether.nz/does-chlorine-in-tap-water-affect-your-gut-microbiome/), the RNZ report notes. MPI says bromoform as a methane inhibitor has been prioritised for assessment at Codex, which sets international residue limits for food. That work hasn't been done yet. ## What it does for the climate Here is the rough maths. The 2020 study puts a finished beef animal’s lifetime methane at 2,280kg of CO2-equivalent, or about 90kg of methane. McNee says one bolus cuts methane about 70% for about 100 days. Spread over a 20-month life, that is roughly 10 to 15% of the animal's lifetime methane. Something like 10kg to 15kg of methane per animal. Beef cattle produce about 17% of New Zealand's agricultural emissions, according to Ministry for the Environment figures cited in the same study. If every eligible animal got a bolus, the cut would be around 1% of farm emissions. New Zealand's entire contribution to global warming is about 0.003°C, according to the [Parliamentary Commissioner for the Environment](https://pce.parliament.nz/media/fv3lhyoj/contribution-of-historical-methane-emissions-to-present-day-warming-summary.pdf?ref=organicfoodtogether.nz). One per cent of a share of that is too small for any thermometer to notice. AgriZeroNZ would say that's unfair, because the bolus is only the first tool. MPI projects that if 15% to 30% of farmers took up each tool expected before 2030, agricultural emissions could fall 7% to 14% over a decade. ## The grass, the burp and the ledger There is a second catch, and it comes from the meat industry's own body. A cow's methane doesn't come from nowhere. Beef + Lamb's [factsheet on biogenic methane](https://beeflambnz.com/sites/default/files/factsheets/pdfs/FS286-Biogenic-methane.pdf?ref=organicfoodtogether.nz) explains the loop. Grass takes carbon from the air. The cow eats the grass. Microbes in the rumen turn some of that carbon into methane, and the cow burps it out. After about 12 years, the methane breaks back down into CO2, which grass can take up again. That doesn't make methane harmless. While it's in the air, it traps far more heat than the CO2 it came from. But Beef + Lamb says that if total methane emissions fall by 0.3% a year, they add no extra warming. It also says the standard way of counting methane, called GWP100, is "inaccurate if total methane emissions are stable or decreasing." Herd numbers are falling. Beef + Lamb's survey says sheep numbers dropped 46% between 2000-01 and 2026. And yet GWP100 is the method that matters commercially. Silver Fern Farms uses it in its [2024 greenhouse gas report](https://silverfernfarms.com/content/dam/sff-main-site/en/our-company/our-sustainable-chain-of-care/key-sustainability-documents/SFF-0013%5FGHG%20Inventory%202024%20Data%20Update%5Fv9.pdf?ref=organicfoodtogether.nz). The bolus is built to move tonnes on that ledger. Not degrees on a thermometer. ## Who wants it Not farmers, by most measures. A 2025 survey by the Bioeconomy Science Institute found only 7% of dairy farmers who responded saw cutting emissions as a major focus in the next two years, RNZ reported. Only 40% planned to use a methane vaccine if one became available. A separate survey by NZ Farming, Groundswell NZ and the Methane Science Accord, three groups that oppose current methane policy, [reported in May 2025](https://m.scoop.co.nz/stories/AK2505/S00380/nz-farmers-slam-methane-madness-95-reject-biotech-fix-for-livestock.htm?ref=organicfoodtogether.nz) that 93% of farmers who answered would refuse to use methane inhibitors on their animals. It said 88% wouldn't eat meat or dairy from treated stock. The Government isn't forcing it either. Last year it scrapped its plan to price agricultural methane and weakened the 2050 methane target, RNZ reported. Parliamentary Commissioner for the Environment Simon Upton said in March that the Government's emissions projections assume at least 37% of dairy cattle get a methane vaccine by 2030\. "I personally find this assumption heroic," he said. ## So who is asking? The buyers. Silver Fern Farms' 2024 report says about 25% of its supply volume goes to businesses with their own supply-chain emissions targets, and that the share is rising. It says those customers must show action through their suppliers, down to the farm. It says its own targets are driven by the aim to "hold on to the privileged market and customer access position we have today." Dairy is further along. Mars is putting about $27 million into Fonterra farming families over five years to help cut emissions on farm, and Nestle is funding incentive payments too, [ESG Today reported](https://www.esgtoday.com/nestle-mars-to-fund-incentives-for-farmers-to-cut-dairy-supply-chain-emissions/?ref=organicfoodtogether.nz). Mars expects the deal to cut its own supply-chain emissions by more than 150,000 tonnes by 2030. Hewett put it plainly in AgriZeroNZ's announcement: "Many of our major export customers expect progress on emissions reductions across their supply chains, through to New Zealand farms." The cow is where the customer's target gets met. ## Where it gets engineered If there is a Frankenstein part, it lives in the gut. In July 2025 AgriZeroNZ [invested US$3.5 million in BiomEdit](https://www.agrizero.nz/news/agrizeronz-s-probiotic-portfolio-grows-with-new-us-investment?ref=organicfoodtogether.nz), an Indiana company making a probiotic feed additive. Its chief executive said it was exploring engineering microbes to make proteins that attack the methane-makers directly. McNee said the path for any engineered product depends on the [Gene Technology Bill](https://www.organicfoodtogether.nz/tag/gene-technology-bill/). MPI's pipeline chart also lists "HME ryegrass", which the 2018 report describes as genetically modified. The cow is the same cow. The bugs inside it and the grass under it might not be. ## Where organic sits Outside all of this. The 2018 report said methane inhibitors "would be incompatible with organic farm systems". It said certified organic farms couldn't use a methane vaccine unless the rules on vaccines changed. In the UK, when Arla trialled Bovaer in 2024, the Soil Association [said it would not be permitted](https://www.soilassociation.org/news-events-and-resources/latest-news-and-insight/soil-association-response-to-questions-about-bovaer-and-organic?ref=organicfoodtogether.nz) under organic standards. I couldn't find a New Zealand certifier saying anything about the bolus yet. [Organic beef here](https://www.organicfoodtogether.nz/where-to-buy-organic-beef-in-new-zealand/) comes from cattle raised on grass, with nothing in the rumen but what they ate. Hewett told RNZ farmers should have five or six products to choose from by 2030\. The first is a capsule of synthetic bromoform, for animals that will never be milked or bred. --- **Next, in Part 2:** who owns the company making the bolus, who sits on its board, and who stands to be paid if it works. --- **Before you go** If this was useful, you can [sign up free](https://www.organicfoodtogether.nz/#/portal/signup) to get new posts by email. And if you'd like to support OFT, you can [become a subscriber](https://www.organicfoodtogether.nz/#/portal/signup) or [leave a one-off tip](https://www.organicfoodtogether.nz/#/portal/support).