Key Takeaways
- Michael I. Sencer’s childhood visit to a hatchery, where he witnessed male chicks being killed, sparked a lifelong commitment to ending chick culling.
- In‑ovo sexing—technology that determines embryo sex inside the egg—allows hatcheries to eliminate male chicks before they develop, replacing brutal maceration methods.
- NestFresh, under Hidden Villa Ranch, became the first major U.S. brand to source all its eggs via in‑ovo sexing, marketing them with the “humanely hatched” label after consumer research showed unfamiliarity with technical terms.
- Current U.S. in‑ovo sexing options include the affordable, non‑invasive Cheggy system (limited to brown eggs) and the higher‑cost, versatile Genus Focus MRI‑AI system; both are being deployed in a growing number of hatcheries.
- Adoption adds roughly one penny per egg to production costs; NestFresh has absorbed this increase to build consumer trust, relying on a current egg‑price surplus to avoid price hikes.
- Regulatory pressure in Europe (Germany’s 2022 ban, French subsidies) accelerated technology uptake, while U.S. progress relies on voluntary initiatives like the proposed EGG SAVE Act tax credit and retailer interest.
- Wider acceptance hinges on raising public awareness—currently under 20 %—and demonstrating that ending male‑chick culling is a win‑win for animal welfare, workers, and hatchery economics.
A Personal Turning Point
Forty years ago, Michael I. Sencer toured a California egg ranch with his family so his children could see chicks hatch. Watching workers toss male chicks into plastic‑bag‑lined trash cans and then seal them to suffocate left a lasting impression. His young daughter’s silent protest after learning that “males are useless” haunted Sencer and later drove his professional mission to eliminate the practice.
The Reality of Chick Culling in the U.S.
Even today, the U.S. egg industry disposes of hundreds of millions of male chicks each year because only females become laying hens. The once‑common method of suffocating chicks in bags has been replaced by macerators with rotating blades that shred the embryos quickly and efficiently—a process still deemed inhumane by animal‑welfare advocates.
Discovery of In‑ovo Sexing
While reviewing international trade publications, Sencer learned about in‑ovo sexing, a set of technologies that determine an embryo’s sex inside the egg before it develops. Countries such as Germany had already banned chick culling, creating a market for these alternatives. Intrigued, Sencer traveled to Germany to evaluate the emerging machines.
NestFresh Leads the U.S. Market
In July 2025, the U.S. saw its first commercially sold eggs produced via in‑ovo sexing under the NestFresh brand, a subsidiary of Hidden Villa Ranch. One year later, NestFresh sources all its eggs through this method, marking the fulfillment of Sencer’s four‑decade‑old pledge. The brand now advertises the eggs as “humanely hatched,” a phrase chosen after consumer testing showed that terms like “culling” or “in‑ovo sexing” required explanation and would not fit on limited carton space.
How In‑ovo Sexing Works
In‑ovo sexing encompasses several approaches: imaging techniques (MRI, hyperspectral, spectroscopic), liquid‑analysis assays, DNA‑based tests, and even smell‑based detection. Some methods are invasive, requiring a small puncture of the egg, while others are fully non‑invasive. The technology’s success hinges on accuracy, speed, automation, and cost—factors that determine which system hatcheries adopt.
Current U.S. Technologies
The most affordable system in the United States is Cheggy, made by Germany’s Agri Advanced Technologies. Cheggy uses hyperspectral analysis to examine feather coloration in developing embryos, processing over 20,000 eggs per hour, but it works only on brown eggs—limiting its use in a market dominated by white shells.
A more versatile, albeit pricier, option is Genus Focus from Orbem, which combines MRI imaging with artificial intelligence to sex embryos regardless of shell color. After a recent funding round, Orbem plans to expand its U.S. presence, aiming to fill the gap left by Cheggy’s spectral limitation.
Benefits of Early Sex Determination
Detecting sex earlier in incubation not only spares male chicks from death but also improves hatchery efficiency. By removing male embryos before they consume resources, hatcheries save on feed, energy, and labor. Germany’s 2024 regulation mandating sex determination by the thirteenth day of incubation illustrates how early detection can be legislated to maximize both welfare and economic gains.
Future‑Looking Innovations
Researchers in Israel are developing spectroscopic imaging coupled with gene editing that halts the development of male embryos entirely. If perfected, this approach would eliminate the need to sort eggs after sexing, further reducing waste and allowing hatcheries to capture the full economic value of each egg. Nonetheless, widespread use will require advances in technology, regulatory approval, and consumer acceptance.
Labeling and Consumer Awareness
NestFresh chose the “humanely hatched” label after focus groups revealed that most shoppers were unfamiliar with terms like “in‑ovo sexing” or “culling.” Clear, concise messaging is essential because egg cartons offer limited space for explanation. The claim has been validated by Certified Humane, providing an independent endorsement that builds trust among conscientious buyers.
Economic Considerations
The primary barrier to broader adoption is the upfront capital needed for in‑ovo sexing machines and any additional facility modifications. Many U.S. hatcheries now rent the equipment, paying a per‑egg fee that translates to roughly one extra cent per egg—a cost usually passed on to consumers. NestFresh has opted not to raise its retail price despite a 50‑ to 75‑cent increase per bird in production costs, leveraging a current market surplus in egg prices to absorb the expense and signal commitment to the technology.
Regulatory Landscape and Policy Incentives
Europe’s regulatory push—exemplified by Germany’s 2022 ban on chick culling and French subsidies—created the market conditions that spurred technological innovation. In the United States, no federal ban exists, but lawmakers introduced the EGG SAVE Act in October 2025, proposing a tax credit for producers who invest in in‑ovo sexing equipment. Such incentives could accelerate adoption by lowering the financial barrier for hatcheries.
Global Diffusion
Beyond North America and Europe, in‑ovo sexing reached Brazil in 2025 and Australia in 2026. Analysts anticipate gradual spread to cost‑sensitive markets like India, where the modest price increase may slow uptake initially. However, declining equipment costs, rising technical proficiency, and growing hatchery experience suggest that the technology will become commonplace worldwide within the next decade.
Retailers as the Next Frontier
Industry experts argue that retailers hold the key to scaling the market. While Whole Foods now stocks NestFresh nationwide, it has not prominently highlighted the “humanely hatched” attribute. Greater consumer education—through in‑store signage, online content, or packaging—could drive demand, prompting more retailers to adopt and promote eggs free of male‑chick culling.
A Win‑Win for Animals, Workers, and the Industry
Advocates from the Humane League, ASPCA, and other groups emphasize that ending male‑chick culling is one of the few fully preventable sources of farm‑animal suffering. In‑ovo sexing not only spares countless chicks but also alleviates hatchery workers from participating in a distressing task, thereby improving workplace morale. As Liz Fergus of the Humane League puts it, “The solutions are here, and they work.” With continued innovation, supportive policies, and informed consumers, the egg industry can move decisively toward a more humane and sustainable future.