NZ Animal Research Report 2024: Decline in High-Impact Procedures 'Encouraging' Despite Increased Use

Key Findings from the 2024 MPI Statistics Report

In the latest annual statistics released by New Zealand's Ministry for Primary Industries (MPI), a total of 602,318 animals underwent manipulations in research, testing, and teaching (RTT) activities during 2024. This marks a notable increase from the 316,568 reported in 2023, primarily due to the cyclical nature of long-term project reporting, where data is submitted every three years or upon project completion. Despite this uptick in overall usage, the proportion of animals subjected to high or very high impact procedures has plummeted to less than 2%, totaling around 10,950 cases—a sharp decline from 17% the previous year. Experts view this as an encouraging sign of improved welfare practices across the sector.

The report, compiled under the Animal Welfare (Records and Statistics) Regulations 1999, provides transparency into how animals are used in scientific endeavors, emphasizing ethical oversight by Animal Ethics Committees (AECs). These committees, mandatory for all RTT projects, evaluate proposals to ensure compliance with the Three Rs principles: Replacement (using non-animal alternatives), Reduction (minimizing animal numbers), and Refinement (enhancing procedures to lessen suffering).

Breaking Down Impact Classifications

Animal impacts are graded from A to E based on the degree and duration of stress, pain, or distress caused by procedures. Grade A signifies no impact or virtually none, such as non-invasive observations. Grade B indicates minor, short-duration effects, like brief handling. Moderate impacts (C) involve either minor long-term or moderate short-term effects, common in tagging or sampling. High impact (D) covers moderate long-term or high short-term distress, while very high (E) denotes severe effects of any duration, often leading to euthanasia.

In 2024, 51% of animals fell into A or B categories (305,858), 47% into moderate C (285,500), and just 1.8% into D or E. This distribution reflects a long-term downward trend in severe cases, averaging 6% historically but dipping below that in recent data. For context, fish conservation efforts dominated low-impact uses, while isolated high-impact instances involved thermal stress tests or toxin exposures in rodents for vaccine validation.

Trends in Usage: Volatility Explained

Annual fluctuations, like the 2024 surge, stem from multi-year projects reported in batches rather than yearly. A three-year rolling average (2022-2024) stabilizes at 437,077 animals, offering a steadier trendline. High-impact procedures declined dramatically year-over-year, attributed to refined methodologies and greater 3Rs adoption. For instance, 30 organizations voluntarily reported 32 new Refinement techniques, including enriched housing and better pain management.

• Total manipulated animals: Up 90% from 2023, but three-year average down slightly.
• High/very high impacts: Down from 52,731 (17%) to 10,950 (1.8%).
• Bred but unused (euthanized): 139,686, mostly mice and fish, a new reporting category.
• Rehomed animals: Dropped to 141, mainly fish and cattle, signaling fewer surplus cases.

Deaths during or post-manipulation totaled 66,084 (11%), with rodents showing highest rates (94% for mice and rats) due to breeding culls.

Universities Lead in Animal Research Volume

New Zealand universities accounted for 65% of 2024's animal use (393,044), underscoring their pivotal role in advancing knowledge. Institutions like the University of Auckland, University of Otago, Massey University, and Lincoln University spearheaded efforts in species conservation (200,791 animals, mostly fish population studies) and veterinary research. Crown Research Institutes (CRIs) like AgResearch handled 10% (63,022), focusing on husbandry and biology, while commercial entities covered 16% in vet applications.

This academic dominance highlights higher education's commitment to RTT under strict AEC approvals. Universities also pioneered openness initiatives, signing the ANZCCART Openness Agreement to share project details publicly, fostering trust and debate.

Species Breakdown and Research Purposes

Fish topped the list at 292,348 (49%), largely for conservation tagging amid New Zealand's unique biodiversity challenges, like protecting native eels and galaxiids. Cattle followed at 178,637 (30%), used in veterinary studies for mastitis or fertility. Farm animals overall comprised 39%.

Rodents (mice 34,719, rats 7,391) featured in medical research (20,928 total), including vaccine trials. Other notables: sheep (50,460), birds (12,688), and minimal primates (none reported). Purposes skewed toward conservation (34%), veterinary (27%), and husbandry (11%), with medical and testing minimal at 3-4% each.

Photo by Andres Oropeza on Unsplash

Advancing the 3Rs in New Zealand Academia

The Three Rs, first articulated by W.M.S. Russell and R.L. Burch in 1959, guide ethical RTT globally. In 2024, NZ saw robust implementation: Replacement via in vitro models and simulations (21% of reports), Reduction through statistical optimizations (29%), and Refinement with analgesia protocols (38%). Universities led with innovations like video-based teaching at polytechnics, replacing dissections.

For aspiring researchers, mastering 3Rs enhances grant success and career prospects. Explore tips for academic CVs emphasizing ethical expertise, or browse research jobs in NZ universities prioritizing welfare.

Stakeholder Views and Ethical Debates

ANZCCART NZ welcomed the high-impact decline as evidence of progress, noting two-thirds minimal impacts and rising 3Rs sharing (48 institutions on Replacement). Conversely, advocacy groups like NZAVS highlighted 66,084 deaths and called for phasing out sentient species use, critiquing fish welfare in mass studies.

AECs balance benefits—like vaccine developments benefiting NZ's livestock sector—against welfare. Public attitudes, per 2023 surveys, support regulated research (70% approval) but demand transparency. Universities respond via openness portals detailing projects.

Read the full MPI 2024 Report or ANZCCART's 2023 response.

Challenges: Mortality and High-Impact Cases

While encouraging, challenges persist. 11% died post-manipulation, often humane euthanasia in endpoint criteria. High-impact examples included guinea pig vaccine challenges (544 E-grade) and fish thermal tolerance tests (2,504 E). Variability underscores need for consistent alternatives development, with only 82 animals in such validation.

Future Outlook: Towards Fewer Animals, Better Welfare

Projections suggest stabilized usage via digital twins, AI modeling, and organoids replacing rodents in pharmacology. NZ's biotech sector, bolstered by universities, eyes CRISPR for genetic studies sans live models. Government pushes 3Rs funding, potentially slashing high-impacts further.

For higher ed professionals, this evolution demands skills in computational biology and bioethics. Check higher ed jobs or postdoc advice.

Career Implications in NZ Higher Education Research

The report signals robust demand for ethical researchers at unis like Otago's biomedical hub. Roles in AEC administration, 3Rs innovation, and vet science abound. With 128 code holders, opportunities span faculty to postdocs.

• Bioethicists to oversee AECs.
• Alternatives developers for Replacement grants.
• Vet researchers in conservation biotech.

Position yourself via university jobs and career resources.

Photo by Marija Zaric on Unsplash

Conclusion: Progress Amid Scrutiny

The 2024 NZ animal research report paints an optimistic picture: declining high-impacts despite volume rises, driven by academic leadership and 3Rs. Yet, ongoing refinement ensures welfare aligns with scientific gains. For those eyeing professor insights, higher ed jobs, or career advice, this field offers impactful paths. Engage via comments below and explore posting opportunities.