Archive for Canadian dairy genetics

500 Young Bulls a Year: The 1970 Thesis Behind Murray Hunt’s Lactanet Distinction Award

A 25-year-old grad student wrote that Canada needed to sample as many young sires as it could afford. At the peak, the country was proving over 500 a year. Lactanet just put a name on that idea.

Executive Summary: Lactanet Canada has named Murray Hunt the 2026 recipient of the Dairy Cattle Improvement Industry Distinction Award, with the presentation set for the Dairy Cattle Industry Forum on September 22–23 at the Sheraton Gateway Hotel in Toronto. The citation covers 28 years of professional service across three employers — the Ontario Ministry of Agriculture and Food, Holstein Canada, and the Canadian Association of Animal Breeders — plus a Master Breeder Shield at Huntsdale in 1984 and more than 55 years of continuous industry involvement. But the résumé isn’t the story. The story is that two of Hunt’s ideas, both roughly half a century old, are still running the Canadian system: structured young sire sampling at scale, and ranking bulls by the dollars their daughters actually return. The first idea came out of a 1970 Master’s thesis at Guelph. The second, a profit index called Production Dollar Difference, was built while he was still a student and shows up today as Pro$. For breeders, the takeaway is uncomfortable in a useful way: the two selection tools you use most casually were both fought for by people who had to convince a skeptical industry that dollars and numbers beat instinct.

Key Takeaways

  • Lactanet named Murray Hunt the 2026 Dairy Cattle Improvement Industry Distinction Award recipient, with presentation at the Toronto Forum, September 22–23, 2026.
  • His 1970 Guelph thesis argued for maximizing the number of young sires sampled annually. At the peak of Canadian young sire sampling, over 500 AI bulls were sampled per year.
  • He built Canada’s first profit-based sire ranking, the Production Dollar Difference, whose logic reappears in Pro$, launched in August 2015.
  • He chaired the inaugural Genetic Evaluation Board (created 1987) and helped move it from a government-directed body to an industry-driven one under CDN in 1996.
  • He worked himself out of a job. The 1998 dissolution of CAAB — the organization he ran as Executive Director — was the logical end of the restructuring he championed.

The award, and what it actually recognizes

Lactanet Canada announced on August 20 that Murray Hunt is the 2026 recipient of the Dairy Cattle Improvement Industry Distinction Award, an honour created in 2008 and presented each September at the Dairy Cattle Industry Forum. The presentation happens September 22–23 at the Sheraton Gateway Hotel in Toronto.

The nomination was prepared by Brian Van Doormaal on behalf of Lactanet Canada. That detail matters more than it looks. Van Doormaal was himself a 2023 recipient of the same award, and he spent his career running the genetic evaluation infrastructure that Hunt spent his career assembling the governance for. When the person who inherited the machine writes the citation for the person who built the frame, the document reads less like a tribute and more like a technical handover note.

Lactanet’s release describes “a lifetime of visionary leadership, innovation, and dedication.” Fine. Here’s the part that survives the Swap Test — you couldn’t write these sentences about poultry, or about anything other than Canadian dairy cattle improvement, because the specific institutions only exist here.

It started with 22 cows and a market garden

Murray Hunt was 15 when his parents, Sterling and Irene Hunt, bought Huntsdale Farm: 22 cows and 25 acres of market garden in Ontario. Through the 1960s the farm grew and picked up quota when the Ontario Milk Marketing Board first introduced it.

Then the teenager did something that tells you everything about the next 60 years. He enrolled the herd in the federal Record of Performance program and started using artificial insemination in 1962. Type Classification followed in 1963.

Think about what that meant on a 22-cow Ontario farm in 1962. Milk recording was a cost with no guaranteed return. AI meant handing your breeding decisions to a catalogue. Classification meant paying a stranger to tell you your cows weren’t as good as you thought. Plenty of neighbours passed. He signed up for all three before he could legally buy a beer.

That’s the through-line: measure it, then decide. Everything else in the citation is that instinct applied at progressively larger scale.

The thesis that built a sampling program

On his parents’ advice, Hunt went to the University of Guelph — B.Sc. in Agriculture in 1969, M.Sc. in Animal Breeding in 1970, supervised by Dr. Ted Burnside.

The thesis conclusion sounds obvious now and was contentious then: to find genuinely elite progeny-proven sires for wide national and international AI use, you have to maximize the number of young sires entering structured sampling programs every single year. Not the best-looking young bulls. The most young bulls you can properly sample.

That is a statistical argument, not a stockman’s argument, and it cuts against how breeders think. Every bull you sample that fails costs money and daughters. The counter-argument — that you cannot select intensely from a small pool, no matter how carefully you pick it — only pays off in aggregate, across years, at a national scale nobody standing in a barn can see.

Canada bought the argument. Per Lactanet’s citation, at the peak of Canadian young sire sampling the active adoption of that strategy meant over 500 AI young bulls sampled in Canada annually. That number is the thesis, cashed.

Barn math on the idea: A sampling program that proves 50 bulls a year and keeps the top 10% delivers five elite sires. Run 500 through the same 10% filter and you get 50 — and because the selection differential widens as the pool grows, the top of that 50 is better than the top of the five. That’s it. That’s the whole argument, and it’s why Canadian genetics travelled.

Before Pro$ there was PDD — and the paper trail is worth arguing about

Still a grad student, chasing both genetics and economics, Hunt built Canada’s first sire ranking index: the Production Dollar Difference, or PDD. It estimated the additional profit in dollars a producer could expect over a lactation from a given bull’s daughters versus an average cow.

Not points. Not a composite of traits weighted by committee taste. Dollars.

Because PDD was built on Ontario’s milk payment system, it was provincial rather than national in scope, and it got picked up by leading provincial extension specialists. That exposure landed Hunt his first job — Dairy Herd Improvement Program Director at the Ontario Ministry of Agriculture and Food, 1970 to 1973.

Now the honest complication. Lactanet’s 2026 citation calls PDD “the first predecessor of today’s national Pro$ index introduced in 2015.” A 2012 Bullvine profile of Hunt described the same Dollar Difference Guide as “the precursor to the Canadian LPI system.” Both can’t be casually true, and the difference is instructive rather than trivial.

LPI launched in 1991 and, per Lactanet’s own comparison of the two indexes presented to Interbull, began as a production-and-type composite across six traits. Pro$ launched in August 2015 and works by accumulating each cow’s revenue and expenses to six years of age, then relating average daughter profit back to sire proofs.

On methodology, PDD is clearly Pro$’s ancestor, not LPI’s. Both start from money. LPI started from traits. Chronologically the Bullvine version is defensible — PDD predated everything, and LPI came first — but the intellectual lineage runs to 2015, and it took the industry 45 years to build the cow-level profit database needed to do properly what a Guelph grad student sketched with Ontario milk cheques.

Lactanet marked Pro$’s tenth anniversary in August 2025. Somebody should have handed out a second cake in Troy, Ontario.

Holstein Canada: the handheld device and the mindset shift

In 1973 Hunt moved to extension roles at Holstein Canada, and in 1978 became Genetic Improvement Manager — a post he held 13 years. The nomination lists what came out of that stretch, and three items deserve unpacking.

He argued breeders into using proofs. Hunt pushed Canadian breeders to fold Agriculture Canada’s production-trait bull proofs and cow genetic indexes into actual selection decisions. In the late 1970s that was a fight. The pedigree-and-eyeball camp was not persuaded that a number from Ottawa knew more than a good stockman.

He rebuilt type classification. Holstein Canada’s program was revamped under his direction, including deployment of the first handheld device to standardize how classifiers recorded animal assessments. That’s a data-integrity move disguised as a hardware purchase: get the score off the clipboard and into a structured field at the moment of observation, and the whole downstream evaluation gets better. Multiple countries subsequently adopted the Canadian system.

He wired the universities in. Hunt directed the Holstein Canada Research Committee, including the contract with the Centre for Genetic Improvement of Livestock at Guelph to calculate official Canadian type-trait bull proofs alongside federal evaluation services.

Then the committee work, which is where Canadian dairy improvement actually gets decided:

  • Selected as a dairy cattle improvement industry representative on the Canadian Milk Recording Board when the federal department created it in 1975.
  • Served years as inaugural Chair of the Canadian Genetic Evaluation Board for Dairy Animals, established 1987, and of its industry-and-breeder Genetic Consultative Committee.
  • Active leadership on the National Advisory Council for Dairy Animal Improvement, the table that pulled together federal and provincial governments, Dairy Farmers of Canada, the GEB, the Canadian Dairy Breeds, the CMRB and CAAB.
  • Co-led Benchmark 100 and Strategies ’88 with CAAB, conferences that produced industry-wide agreement on a breeding strategy with “lead emphasis on the improvement of production traits and that selection for conformation traits support higher production.”

Read that last line again if you breed for the show ring. Canada’s formal consensus, reached in the late 1980s with Hunt at the table, was that conformation selection exists to supportproduction. Not the other way around. That resolution echoes through Pro$, through the modernized LPI launched in April 2025, and through every argument in every coffee shop since.

Somewhere in the middle of all of it, the home farm kept breeding. Huntsdale earned Holstein Canada’s Master Breeder Shield in 1984 — the credential that stops the “he’s just an office guy” objection cold.

At CAAB, he restructured himself out of a job

In 1991 Hunt joined the Canadian Association of Animal Breeders as Market Development Director, became Director of Genetics & Industry Relations in 1993, and Executive Director in 1997.

The CAAB years were consolidation years, and the pattern is consistent: take scattered effort and centralize it where it compounds.

T.E.A.M. Hunt secured government funding for a four-year, million-dollar nucleus-style breeding project — superovulating elite donor cows and selecting five sons per “team” for young sire testing across different Canadian AI companies. Semen from each team sold as a group, and the full sisters’ first-lactation data sharpened the team’s evaluation before the brothers turned three. It’s the 1970 thesis logic with a family-based accuracy trick bolted on.

Cattle Breeding Research Council, 1994. Research dollars, people and effort scattered across CAAB, the Canadian Dairy Breeds, the CMRB and Semex got pulled into one body.

Canadian Dairy Network, May 1995. As a NACDAI executive member, Hunt helped conceive and form the Futures Group — CAAB, CDB and CMRB — that produced CDN, Canada’s national genetic evaluation centre and the direct institutional ancestor of Lactanet Genetics.

The GEB handover, 1996. Hunt led the transition of the government-directed Genetic Evaluation Board into an industry-driven CDN committee. The nomination calls the result “globally envied.” That phrasing is a nominator’s flourish, but the structural point stands: producers and industry, not a federal department, set the rules for Canadian genetic evaluation.

DairyGen, 1998. The CBRC Genetics Sub-Committee became the Dairy Cattle Genetics Research and Development Council under CDN.

And then, 1998: CAAB dissolved. Once CDN existed with its own industry funding strategy, the organization Hunt led had done its job. He didn’t defend the org chart. He closed it, which also closed out his own 28-year professional career in dairy cattle improvement.

That is the single most telling line in the nomination. Most industry executives spend their last five years protecting a budget. Hunt wound up the association he was running because the function had moved somewhere better.

He never actually stopped

Hunt and his wife Karen — a Master Breeder in her own right at Huntsdale — spent roughly a decade after that running Wellspring Enterprises & Huntsdale Holsteins, consulting for national and international clients.

Lactanet’s release also credits more than 15 years as a 4-H leader, developing cattle judges, industry leaders and dairy farmers. Ask around Ontario. That list is longer than the résumé.

At 81, he still shows up to Lactanet’s Open Industry Sessions twice a year, virtually, and still asks the questions other people were thinking. He was a presenter at the 2018 Dairy Cattle Improvement Industry Forum and CDN’s 23rd AGM, and he’s still filing genetics analysis for this publication — including a recent piece on using LPI subindexes to find bulls whose components carry them into the top of the profit rankings despite mediocre production traits.

Which is the same argument as PDD. Follow the dollars, not the reputation. Fifty-six years, no drift.

What This Means for Your Operation

This isn’t a hall-of-fame story you read and forget. Three of the decisions on your desk this month trace directly to work in that citation.

1. Check whether your index actually matches your revenue. PDD failed to go national because it was built on one province’s milk payment system. Pro$ works because it uses accumulated cow-level profit to six years of age. If you’re selecting on a total merit index built for a different payment structure than the one on your milk cheque, you’re repeating PDD’s original limitation. Pull your last 12 months of component and quality premiums, then confirm the index you’re using weights them the way your processor pays you.

2. Don’t over-concentrate on a small pool of sires. The 1970 argument was that genetic progress needs a wide sampling base. The genomic-era version: a young genomic sire at 70–75% reliability is a prediction, not a proof. Set a maximum share of services for any single genomic bull — many advisers land in the 10–15% range — and hold that discipline no matter how good the number looks.

3. Audit your own recording data before you blame the evaluation. The handheld classifier device was a data-quality fix, and it worked. Your equivalent is sire IDs, calving dates and health events entered at the moment of the event, not reconstructed from memory on Friday. Bad inputs make good indexes look wrong.

4. If you’re on a committee, know what it’s for. Hunt closed CAAB because the function had moved. Ask the same question of every board, breed club and association you sit on: is this structure still the best home for the work, or is it just the oldest?

The awkward part

We should name the thing this article can’t escape. The Bullvine was built partly on being willing to make the Canadian industry uncomfortable, and its founder’s parents are two of that industry’s most decorated figures. That tension has been on the record here since at least 2015.

So take the family framing out. Strip the name off the citation and what’s left is a 1970 thesis that scaled Canadian young sire sampling past 500 bulls a year, the first profit-based sire ranking this country produced, a modernized classification system that other nations adopted, and the governance architecture that put Canadian genetic evaluation in producers’ hands in 1996 and kept it there.

That earns the award on its own. The family part just means we knew about it earlier than everyone else.

Congratulations, Murray. See you in Toronto in September.

The Sunday Read Dairy Professionals Don’t Skip.

Every week, thousands of producers, breeders, and industry insiders open Bullvine Weekly for genetics insights, market shifts, and profit strategies they won’t find anywhere else. One email. Five minutes. Smarter decisions all week.

NewsSubscribe
First
Last
Consent

Records SHATTERED! Mount Elgin Dairy Spring Spectacular Makes History with Triple Breed Record Sweep!

Mount Elgin 2025: Triple breed records shattered in historic sale! $9.8k avg proves Canadian dairy genetics dominance.

Canadian dairy genetics, Holstein auction prices, dairy breed records, Mount Elgin dairy sale, elite dairy cattle

Guelph, ON – The Mount Elgin Dairy Spring Spectacular, held May 14-15, has etched its name into Canadian dairy history with an electrifying sale that saw THREE national breed records fall in a single day! This unprecedented achievement came alongside impressive overall results, with 166 head averaging a stunning ,797, showcasing the exceptional quality and robust buyer confidence driving the Canadian dairy genetics market forward.

The atmosphere in Guelph was nothing short of electric as buyers and consignors witnessed what will surely be remembered as a watershed moment for the Canadian dairy genetics industry. The sale didn’t just meet expectations – it obliterated them.

Holsteins Command Top Dollar as Elite Genetics Shine

The Holstein offering delivered powerhouse results, with two animals in particular commanding exceptional prices:

  • High Seller of the Day: Lot 6, Kingsway A2P2 R2D2 stole the show, commanding an eye-popping $85,000. This genetic powerhouse from Kingsway Holsteins boasted the coveted A2A2 beta-casein profile along with the polled trait. With an impressive +18 for Conformation, a robust 3708 LPI, and strong components with 97 Fat, she embodied the complete package that today’s progressive breeders are seeking.
  • Second High Seller: Close behind, Lot 1, Vector Zipper Zoe P EX-93 commanded a substantial $64,000. This mature cow, classified Excellent-93 with an outstanding EX-95 Mammary System, demonstrates the continued premium buyers place on proven conformation and valuable traits like polled.

A Trifecta of Triumph: Making Canadian Dairy History

What truly distinguished this sale was an achievement never before seen in Canadian dairy auction history – breaking THREE national breed sale records in a single day! This remarkable trifecta underscores not just the exceptional quality of the animals presented but signals a robust, diversifying marketplace embracing genetic excellence across multiple dairy breeds:

  • Brown Swiss Brilliance: Lot 60, Mt. Elgin Design Trophy shattered the Canadian Brown Swiss record, selling for $15,000. This outstanding female, bred and consigned by Mount Elgin Dairy Farms, showcases the farm’s commitment to excellence beyond Holsteins – a testament to their sophisticated multi-breed breeding program focused on developing superior dairy genetics across diverse breed platforms.
  • Shorthorn Sensation: The record-breaking continued with Lot 69, Kolson Gianni Lady in Red, establishing a new Canadian Milking Shorthorn benchmark at $19,200. This VG-85 classified 2-year-old boasts an extraordinary maternal lineage featuring multiple Excellent dams (EX-90-3E, EX-90-5E, EX-93-2E, VG-87, and EX-93-5E). Such depth in the pedigree reflects Kolson Shorthorns’ dedicated, long-term commitment to developing elite cow families that consistently transmit superior conformation.
  • Ayrshire Ascension: Completing the historic trio, Lot 71, Don Haven Mlios Twilight commanded $31,000, securing a new Canadian Ayrshire record. This exceptional young cow, classified VG-88-2YR MAX, is the #1 Conformation Cow in Canada for her breed, with remarkable individual trait scores (+15 Conformation, +12 Mammary System, +14 Dairy Strength). Her show ring success – All-World 2-Year-Old 2024 and All-Canadian Fall 2-Year-Old 2024 – coupled with genetic merit (+2605 LPI) exemplifies Don Haven Ayrshires’ mastery in breeding complete animals excelling in both conformation and production.

The excitement stretched well beyond the record-setters:

  • Overall Average: An impressive $9,797 across 166 head demonstrates the depth of quality throughout the offering and substantial buyer confidence.

This strong average across such a significant number of animals wasn’t driven by just a few outliers, which reflects consistent demand and appreciation for quality genetics across the entire catalog.

Hats off to Mount Elgin Dairy Farms and London Dairy Farms for orchestrating this landmark event, and to the consignors who brought such extraordinary quality to the sale ring. If the Mount Elgin Spring Spectacular is any indication, the appetite for elite Canadian dairy genetics is robust, and the future is exceptionally bright!

Executive Summary:

The Mount Elgin Dairy Spring Spectacular 2025 rewrote Canadian dairy history with three national breed records smashed in one day: a Brown Swiss ($15,000), Milking Shorthorn ($19,200), and Ayrshire ($31,000). Holsteins dominated the top lots, led by Kingsway A2P2 R2D2 ($85,000) and Vector Zipper Zoe P ($64,000), while 166 head averaged $9,797-showcasing fierce demand for elite genetics. The sale highlighted Canada’s leadership in multi-breed excellence, emphasizing balanced traits (conformation, production, polled/A2) and deep pedigrees. Breeders demonstrated willingness to invest heavily in animals poised to elevate herd profitability and global competitiveness.

Key Takeaways:

  • Historic Triple Crown: First-ever Canadian sale to break three breed records (Brown Swiss, Shorthorn, Ayrshire) simultaneously.
  • Holstein Power: $85k & $64k top sellers reinforced Holstein dominance, but colored breeds stole headlines with record prices.
  • Market Confidence: $9,797 average across 166 head signals robust buyer trust in Canadian genetics’ long-term value.
  • Breeder Strategy: Animals blending show-winning type, production metrics (e.g., +2605 LPI), and niche traits (A2/polled) commanded premiums.
  • Global Signal: Canada’s multi-breed success positions it as a hub for diverse, world-class dairy genetics.

Learn more:

The Sunday Read Dairy Professionals Don’t Skip.

Every week, thousands of producers, breeders, and industry insiders open Bullvine Weekly for genetics insights, market shifts, and profit strategies they won’t find anywhere else. One email. Five minutes. Smarter decisions all week.

NewsSubscribe
First
Last
Consent

Modernized LPI: How Canada’s New Genetic Selection Framework Will Transform Dairy Breeding in April 2025

Canada’s dairy genetics are about to be shaken up. Is your herd ready for the LPI revolution coming in April 2025? Find out who wins and who loses.

EXECUTIVE SUMMARY: Canada’s Lifetime Performance Index (LPI) is undergoing a major overhaul, set to launch in April 2025. This modernization introduces six new subindexes, including an innovative Environmental Impact Index for Holsteins. The changes aim to address drift in the current formula and align genetic selection with sustainability goals. Producers can expect a significant reranking of bulls, with some top sires potentially dropping over 150 LPI points. Lactanet has released an LPI Estimator tool to help breeders navigate the transition. The new system promises a more transparent, trait-focused selection that balances production with health, longevity, and environmental efficiency.

KEY TAKEAWAYS:

  • The modernized LPI introduces six subindexes: Production, Longevity & Type, Health & Welfare, Reproduction, Milkability, and Environmental Impact.
  • Genetic rankings will shift dramatically, with only 74% of the top 50 proven Holstein sires maintaining their status.
  • Producers can now preview how their animals will rank under the new system using an Excel-based LPI Estimator tool.
  • The Environmental Impact Index, currently for Holsteins only, signals a strong industry commitment to sustainability.
  • Breeders should review their genetic strategies to align with the new framework before the April 2025 implementation.

Implementing the modernized Lifetime Performance Index (LPI) on April 1, 2025, will mark an important milestone for the Canadian dairy industry. This significant update to Canada’s premier selection index represents the culmination of a thoughtful two-year development process, transforming the index from a mathematical formula to a transparent, trait-focused framework that aligns with contemporary sustainability goals and production realities.

Understanding these upcoming changes allows dairy producers making breeding decisions today to adapt and optimize their genetic selection strategies before the official launch date.

Why Your Current Genetic Strategy Needs Updating

The path to modernization began in October 2023, when producer Wayne Dickieson of Prince Edward Island noted during an industry session that the existing LPI formula no longer respected its intended emphasis ratios. Subsequent Lactanet analysis confirmed his observation—the current system had gradually drifted to a 49:34:17 distribution (Production:Durability: Health & Fertility) rather than the intended 40:40:20 balance.

“This mathematical drift created an unintended bias in selection toward production traits at the expense of durability and health,” explains Brian Van Doormaal, Lactanet’s Chief Services Officer. “The modernization addresses this fundamental issue by standardizing each subindex to a common scale before applying weights, preventing future drift and ensuring the index delivers its promised emphasis.”

This discovery initiated a comprehensive reevaluation of the entire LPI framework, guided by four primary objectives:

  • Expanding beyond the three current components to incorporate sustainability traits
  • Eliminating the mathematical formula approach to improve transparency
  • Creating official subindexes to be published alone and combined in LPI
  • Clarifying relative emphasis on traits while focusing on expected responses for key correlated traits

Breaking Down the Six Revolutionary Subindexes Reshaping Dairy Selection

The modernized LPI replaces the three-component structure with six distinct subindexes, each focusing on specific trait clusters with economic and functional significance. For Holsteins, these receive precise weightings: Production Index (40%), Longevity & Type Index (32%), Health & Welfare Index (8%), Reproduction Index (10%), Milkability Index (5%), and Environmental Impact Index (5%).

Table 1: Lifetime Performance Index (LPI) Subindex Weightings by Breed (%)

SubindexHolsteinJerseyAyrshireBrown SwissGuernseyMilking ShorthornCanadienne
Production Index (PI)40404045404540
Longevity & Type Index (LTI)32303230323035
Health & Welfare Index (HWI)81088855
Reproduction Index (RI)10101012101010
Milkability Index (MI)510105101010
Environmental Impact Index (EI)5

Each subindex will be standardized to a Relative Breeding Value (RBV) scale with an average of 500 and a standard deviation of 100—an important innovation that prevents the mathematical drift affecting the previous formula. This standardization ensures the intended trait emphases remain stable over time, creating a more reliable and predictable selection tool.

Production Index (PI): The Economic Foundation

While maintaining its position as the cornerstone of economic selection, the PI introduces refinements that reflect long-term market realities rather than short-term price fluctuations. Holsteins’ fat-to-protein ratio is fixed at 60:40, prioritizing fat yield while maintaining adequate protein emphasis. This approach reflects butterfat’s stable economic value in the current and projected marketplace.

Jersey cattle place a greater emphasis on fat production than on protein than Holsteins (50% fat emphasis versus 40% protein), honoring the breed’s traditional strength in butterfat-rich product markets. Across all breeds, the focus remains on absolute yields rather than compositional percentages, ensuring selection drives increased production efficiency per animal.

Longevity & Type Index (LTI): Building Cows That Last

This subindex merges direct longevity measurements with conformational attributes contributing to extended productive life. A notable shift includes reducing emphasis on Dairy Strength from 10% to 5% while increasing focus on Feet and legs to 33% in Holsteins. The Mammary System receives significant weight (37% in Holsteins), reflecting its critical importance to functional productivity and udder health throughout lactation.

Table 2: Longevity & Type Index (LTI) Composition by Breed (%)

TraitHolsteinJerseyAyrshireBrown SwissGuernseyMilking ShorthornCanadienne
Herd Life20204040342620
Mammary System37403832324255
Feet & Legs33402216242825
Dairy Strength5104
Rump512

Breed-specific adaptations maintain the uniqueness of each population—Ayrshires place 40% emphasis on Herd Life directly. In comparison, Canadienne cattle allocate 55% of the LTI to the Mammary System, reflecting the breed’s traditional excellence in udder traits.

Health & Welfare Index (HWI): Science-Based Disease Resistance

The HWI integrates disease resistance traits using a scientifically derived economic weighting system developed through consultation with AbacusBio. The Holstein formula incorporates Mastitis Resistance (47%), Metabolic Disease Resistance (27%), Hoof Health (21%), and Cystic Ovaries (5%), with weightings determined through rigorous analysis of heritability, disease prevalence, and treatment costs.

This science-based approach ensures that selection emphasis aligns with the economic impact of each health challenge, maximizing the return on genetic investment in disease resistance. Including Hoof Health within this index—previously part of the Durability component—creates a more logical organization of health-related traits.

Reproduction Index (RI): Focusing on Fertility

The RI dedicates a dedicated focus to fertility, with 90% emphasis on Daughter Fertility and 10% on Daughter Calving Ability across all breeds. This thoughtful prioritization of reproductive efficiency acknowledges its critical role in lifetime productivity and farm profitability.

The consistent 90:10 weighting across breeds reflects the universal importance of fertility regardless of breed specialization, clearly signaling to breeders the value of reproductive traits in all production systems.

Milkability Index (MI): Labor Efficiency in the Parlor

This innovative addition to the LPI framework addresses an increasingly important dimension of dairy operation—labor efficiency and milking system compatibility. For Holsteins, it incorporates Milking Speed (25%), Milking Temperament (18%), Udder Floor (-6%, with negative values being desirable), Udder Depth (15%), and Teat Length (36%).

Table 3: Milkability Index (MI) Composition by Breed (%)

TraitHolsteinJerseyAyrshireBrown SwissGuernseyMilking ShorthornCanadienne
Milking Speed25203025303025
Temperament18202018151518
Udder Depth15151015301515
Udder Floor-6-10-6-6-5-6-6
Teat Length36353436203436

Including this index reflects the increasing automation of milking systems and the economic significance of efficient milk harvesting. Negative weights for traits like Udder Floor indicate selection toward more desirable values for these traits (higher udders with less pronounced floor), requiring careful interpretation by breeders.

Environmental Impact Index (EI): Breeding for Sustainability

Exclusive to Holsteins initially, this forward-looking index combines Feed Efficiency (25%), Methane Efficiency (37%), and Body Maintenance Requirement (38%). Its introduction signals the industry’s commitment to sustainability objectives and positions Canadian genetics advantageously in climate-conscious dairy production.

The EI represents the most forward-looking aspect of the modernized LPI. It aligns genetic selection with Dairy Farmers of Canada’s goal of net-zero greenhouse gas emissions by 2050. The decision to restrict this index to Holsteins initially reflects limitations on data availability for other breeds, but it establishes a framework that can expand as research progresses.

Winners and Losers: How Your Herd’s Genetics Will Be Reranked

The transition to the modernized LPI will lead to a noticeable reranking of genetic merit. An analysis of December 2024 evaluations reveals that changes in Holstein LPI values can exceed ±300 points in some cases. Among the top 50 proven Holstein sires, 74% remain in the top 50 under the new system, with an average change of +12.6 LPI points (maximum increase of 172, maximum decrease of 189).

Table 4: Impact of Modernized LPI on Holstein Genetic Rankings

CategoryAverage LPI ChangeMaximum IncreaseMaximum Decrease% Remaining in Top Group
Top 50 Proven Sires+12.6+172-18974%
Top 100 Proven Sires+9.4+176-19475%
Top 50 Genomic Bulls-2.6+152-12456%
Top 100 Genomic Bulls+4.7+152-15767%
Top 50 GLPI Cows+18.1+125-17168%
Top 100 GLPI Cows+21.9+150-17164%

Genomically-tested animals show more significant variability, with only 56% of the top 50 genomic bulls maintaining their top 50 status under the new system. This suggests that early adaptation may offer opportunities to identify previously undervalued genetics that excel in newly emphasized traits.

The impact varies by breed—Jersey-proven sires show an average decrease of 39.3 LPI points among the top 50 bulls, with 90% maintaining their top 50 status. Ayrshires see an average reduction of 16.2 points among top sires, with 94% remaining in the top 50.

Table 5: Examples of Significant Changes in Holstein Proven Sire Rankings

NameCurrent RankCurrent LPINew RankNew LPIChangeNotable Traits
SIEMERS RENEGADE ROZLINE-ET8367023831+161High MI (594), Strong EI (609)
CO-OP ALTABOOYAH-ET73690543518-172Lower EI (435)
SILVERRIDGE V EINSTEIN123628273616-12Exceptional HWI (718)
OCD MILAN-ET3384513997+152Strong LTI (771), High HWI (712)

Navigating the Transition: Tools You Can Use Today

To facilitate this transition, Lactanet has developed and publicly released an Excel-based LPI Estimator tool (available since February 12, 2025) that calculates modernized LPI values based on current genetic evaluations. This tool allows producers and industry professionals to preview how their animals will be valued under the new system and make informed breeding decisions accordingly.

The estimator accepts manual input of 21 trait values for individual animals or can process data files for companies receiving weekly updates from Lactanet. Each subindex receives a percentile rank alongside its RBV value, providing immediate context for an animal’s standing relative to the population.

For forward-thinking breeders, this tool creates an opportunity to identify valuable genetics before the April implementation—potentially acquiring animals that will appreciate in ranking once the new system takes effect.

Preparing Your Breeding Program for April 2025

The modernized LPI presents both challenges and opportunities for Canadian dairy farmers. Thoughtful producers may wish to:

  1. Identify breeding stock excelling in newly emphasized traits, particularly those involving health, reproduction, and environmental efficiency
  2. Review current genetic strategies against the new subindex framework, adjusting emphasis areas to align with operational priorities.
  3. Use the LPI Estimator to evaluate current and potential breeding stock under the new system.
  4. Consider prioritizing Pro$ or LPI based on specific operation goals and market positioning.

From a practical standpoint, standardizing subindexes to a standard scale (Average=500, SD=100) will improve clarity regarding an animal’s genetic profile. A bull at the 90th percentile for the Health & Welfare Index (HWI around 628) offers meaningful disease resistance compared to population averages, regardless of its ranking in other categories.

The inclusion of the Environmental Impact Index positions Canadian genetics advantageously in an increasingly sustainability-conscious global market. As carbon pricing mechanisms evolve and consumers seek climate-friendly products, genetics that reduce methane emissions while maintaining production efficiency may offer additional value domestically and internationally.

Looking Forward: Breeding for Tomorrow’s Market Realities

The modernized LPI significantly enhances Canada’s genetic evaluation system. By expanding beyond traditional production and conformation traits to embrace health, fertility, labor efficiency, and environmental impact, Lactanet has created a selection framework aligned with the multifaceted challenges of modern dairy operations.

Canadian producers now have the opportunity to familiarize themselves with this new genetic landscape before implementation. Those who study the new subindexes, utilize the LPI Estimator tool and thoughtfully adjust breeding strategies will be well-positioned to thrive in an industry increasingly defined by efficiency, sustainability, and animal welfare excellence.

As April 1, 2025, approaches, the Canadian dairy industry continues its tradition of genetic innovation. The modernized LPI provides a robust framework for selecting genetics that will perform successfully in tomorrow’s dairy farms’ economic, social, and environmental contexts.

Learn more

Join the Revolution!

Join over 30,000 successful dairy professionals who rely on Bullvine Daily for their competitive edge. Delivered directly to your inbox each week, our exclusive industry insights help you make smarter decisions while saving precious hours every week. Never miss critical updates on milk production trends, breakthrough technologies, and profit-boosting strategies that top producers are already implementing. Subscribe now to transform your dairy operation’s efficiency and profitability—your future success is just one click away.

NewsSubscribe
First
Last
Consent
Send this to a friend