Is All New Zealand Beef Grass Fed?

This is a fair question and the honest answer is: mostly yes, but not entirely. Here is what you actually need to know.

The Default in New Zealand Is Pasture

New Zealand has a temperate climate with rainfall spread throughout the year. Grass grows in every season. Because of this, the default way to raise cattle in New Zealand has always been to let them graze on open pasture year round. It is not a premium farming choice there. It is just the practical reality of the land and climate.

New Zealand cattle are raised free to roam 365 days a year, meaning from birth to harvest the beef is grass-fed and finished on a predominantly pasture-based diet. This is fundamentally different from the US and most of Europe, where cattle typically start on pasture but are moved to feedlots and grain-finished in the months before slaughter to add weight quickly and increase marbling. msu

But Not Every New Zealand Farm Is Grass-Fed Only

Here is the nuance worth knowing. A very small percentage of New Zealand beef is grain-finished to meet specific market demand, where animals are fed a grain-based diet for a specified period before slaughter. This is a minority of production but it does exist. New Zealand is not a 100% grass-fed country across every single farm and every single animal. Overseer

This matters if you are buying an organ supplement and the label just says "New Zealand beef" without specifying grass-fed. Most NZ beef is grass-fed but not all of it is, so the sourcing claim is worth verifying.

New Zealand Just Launched an Official Grass-Fed Standard

This is recent and relevant. In June 2025 New Zealand's Ministry for Primary Industries launched an official Grass-Fed Administrative Standard, which was unveiled at Fieldays by Prime Minister Christopher Luxon. The standard allows producers who meet the requirements to display a licensed FernMark Grass-Fed logo on their products. Squarespace

For red meat, the standard requires that animals be predominantly fed grass-fed feed types, be permitted to graze outdoors on pasture or forage crops year-round, and that feedlots are not allowed. Squarespace

This is a meaningful development. It gives consumers a verifiable way to confirm that the New Zealand beef they are buying meets a defined grass-fed standard rather than relying on general country-of-origin claims.

How the US Grass-Fed Label Compares

The USDA grass-fed label in the US only requires that the animal's diet was derived from grass at some point in its life. It does not require year-round pasture access, does not prohibit confinement, and does not prevent grain finishing as long as the overall diet included grass. The label is looser than most people assume.

New Zealand's standard by contrast requires year-round outdoor grazing and prohibits feedlots entirely. The definition is more rigorous by design because the farming system there already operates that way naturally.

What This Means for Organ Supplements

For organ supplements specifically, grass-fed sourcing is not just a marketing term. Organ meats concentrate nutrients from the animal's diet more than muscle meat does. A liver from a grass-fed, pasture-raised animal has a measurably different nutrient profile than one from a grain-finished animal. USDA FoodData Central data shows New Zealand grass-fed liver contains 470% more Vitamin A, 20 times more omega-3 fatty acids, 70% more iron, and 42% more B12 than standard US grain-fed liver.

So when choosing an organ supplement, the right question is not just "is this from New Zealand" but "is this from New Zealand grass-fed cattle specifically."

One Earth Health sources exclusively from New Zealand grass-fed, pasture-raised cattle. You can find the full organ supplement range here.

The Short Answer

Most New Zealand beef is grass-fed and pasture-raised because the climate makes year-round grazing the practical default. A small percentage is grain-finished to meet specific market demand, so the sourcing claim is worth verifying on any product. New Zealand launched an official government grass-fed standard in June 2025 that requires year-round outdoor grazing and prohibits feedlots, giving consumers a more reliable way to verify claims going forward.