• Partner With Us
  • Focus Areas
    • Cause Selection
    • Global Health & Wellbeing
      • Abundance & Growth
      • Effective Giving & Careers
      • Farm Animal Welfare
      • Global Aid Policy
      • Global Health & Development
      • Global Health R&D
      • Global Public Health Policy
      • Scientific Research
    • Global Catastrophic Risks
      • Biosecurity & Pandemic Preparedness
      • Forecasting
      • Global Catastrophic Risks Capacity Building
      • Potential Risks from Advanced AI
    • Other Areas
      • History of Philanthropy
  • Grants
  • Research & Updates
    • Blog Posts
    • In the News
    • Research Reports
    • Notable Lessons
  • About Us
    • Grantmaking Process
    • How to Apply for Funding
    • Careers
    • Team
    • Operating Values
    • Stay Updated
    • Contact Us
  • Partner With Us
  • Focus Areas
    • Cause Selection
    • Global Health & Wellbeing
      • Abundance & Growth
      • Effective Giving & Careers
      • Farm Animal Welfare
      • Global Aid Policy
      • Global Health & Development
      • Global Health R&D
      • Global Public Health Policy
      • Scientific Research
    • Global Catastrophic Risks
      • Biosecurity & Pandemic Preparedness
      • Forecasting
      • Global Catastrophic Risks Capacity Building
      • Potential Risks from Advanced AI
    • Other Areas
      • History of Philanthropy
  • Grants
  • Research & Updates
    • Blog Posts
    • In the News
    • Research Reports
    • Notable Lessons
  • About Us
    • Grantmaking Process
    • How to Apply for Funding
    • Careers
    • Team
    • Operating Values
    • Stay Updated
    • Contact Us

Why This Could Be the Year of the Broiler Chicken

  • Portfolio Area: Broiler Chicken Welfare
  • Focus Area: Farm Animal Welfare
  • Content Type: Blog Posts
  • Content Type: Farm Animal Welfare Newsletters
Published: May 14, 2017 | by Lewis Bollard

This post originally appeared in the monthly farm animal welfare newsletter written by Lewis Bollard, our program officer for farm animal welfare. Sign up here to receive an email each month with Lewis’ research and insights into farm animal advocacy. Note that the newsletter is not thoroughly vetted by other staff and does not necessarily represent consensus views of Open Philanthropy as a whole.

It’s hard to convey the scale of modern chicken production. One US poultry company, Pilgrim’s Pride, slaughters more animals every week than the entire US beef and dairy industries slaughter in a year. Globally, more farmed chickens are alive today than all other domesticated birds and mammals combined.

The most numerous of these chickens are the world’s roughly 15 billion “broilers” alive at any time — or roughly 55 billion slaughtered annually. (A “broiler” is technically a young chicken, but the term now covers almost all chickens raised for meat, since almost all are slaughtered before sexual maturity.) American broilers aren’t caged or fed hormones — though both practices are catching on elsewhere. But they are bred to suffer, and overcrowded on wet litter in dimly-lit sheds, before being inhumanely slaughtered.

Broiler chickens have suffered for their efficiency and versatility. US broilers now gain a pound of weight for every 1.9 pounds of feed they eat, and reach a slaughter weight of 6.2 pounds in just 48 days. Unlike pork and beef, their meat is accepted by most major religions, and widely viewed as healthy and environmentally friendly. It’s no wonder that 94 percent of Americans consume chicken. And because chickens are so small, each of those Americans wolves down about 23 chickens every year — more than the number of cows the most carnivorous American will eat in a lifetime.

Americans aren’t eating more red meat or fish than they were a half century ago. They’re just eating way more chicken and turkey. Source: USDA statistics.

Now, in the Year of the Chicken, broilers’ fortunes may finally be looking up. At the end of last year, America’s two largest foodservice companies — Aramark and Compass Group — committed within hours of each other to enacting major broiler chicken welfare reforms by 2024. Their pledges followed campaigns by Mercy For Animals, Compassion in World Farming USA, The Humane League, and the Humane Society of the United States.

Since then, these and other groups have secured similar commitments from 27 major food companies, including fast food giants Burger King, Chipotle, and Panera. Five of these companies have committed to only buy chicken certified under the Global Animal Partnership’s (GAP) new broiler welfare standards, which will address everything from genetics to slaughter once finalized. But most companies have only pledged to adopt a more limited set of reforms.

So what are these companies actually committing to, and what impact do we think these reforms will have for broiler chickens?

Modern broiler chickens, like these three on a farm in Andhra Pradesh, India, are bred to grow so fast that their legs often buckle under their weight, preventing them from walking. Stocking density is normally much higher — most of this flock had just been slaughtered. Source: personal photo.

Advocates have chosen to seek corporate pledges to address four of the chicken welfare problems most commonly cited by scientists. But it’s worth noting that much animal welfare science is either poorly designed or biased by industry or interest group funding. It’s also hard to know what chickens actually feel — we can only observe their preferences, behavior, stress, health, and other indicators.

Specifically, companies adopting the more limited reforms — and not GAP certification — have agreed to third party auditing of their poultry suppliers against the following standards:

  1. More space: To provide chickens with one square foot per six pounds of weight — about 40% more space than the industry standard. Studies show both that chickens seem to prefer more space than they receive, and that overcrowding worsens air and litter quality, exacerbating heat stress and dermatitis.
  2. Better environments: To provide chickens with clean litter, enrichments like hay bales, and six hours of continuous darkness each night coupled with proper lighting during the day. Most producers currently provide just four one hour increments of darkness each night, and 20 hours of dim lighting, because this encourages birds to eat more. And producers routinely use the same litter for six or more consecutive flocks, or even multiple years, resulting in later flocks living and sleeping atop large piles of manure.
  3. Better genetics: To use only breeds found to have higher welfare outcomes, based on the outcome of an upcoming study at the University of Guelph. Modern broilers are bred for rapid breast meat growth, and their respiratory systems and legs can’t keep up, leaving many lame and in such pain that they’ll self-select pain relief.
  4. Less inhumane slaughter: To move to multi-step controlled atmospheric stunning systems, in which chickens are stunned with gas or oxygen removal in their transport crates — eliminating the possibility of rough handling — and more reliably rendering birds unconscious. The current electrical waterbath stunning method requires workers to shackle multiple birds per second, resulting in broken wings and legs, and only lightly shocks birds, possibly paralyzing rather than stunning them. As a result, nearly one million US chickens are boiled alive each year.
These images, from a study at the University of Alberta, compare the growth of standard broiler breeds from 1957 and 1978 (grown today with preserved genetics) with that of a 2005 Ross 308 (a standard commercial strain). Growth rates have increased in the decade since, although on average American broilers are slaughtered younger (~48 days) and at a lower weight (~2.8kg). Source: Zuidhof et al, “Growth, efficiency, and yield of commercial broilers from 1957, 1978, and 2005,” Poultry Science (2014).

Advocates are making great progress in these campaigns, but there’s still much more work to do. My estimate is that the corporate pledges to date should cover 300-700 million chickens per year once implemented. Now advocates need to ensure that implementation actually happens, while securing pledges from larger brands, like Subway and Wendy’s, with the potential to affect hundreds of millions more chickens.

Next month I’ll address the only farm animals more numerous and ignored than broiler chickens: fish.

Subscribe to new blog alerts
Open Philanthropy
Open Philanthropy
  • We’re Hiring!
  • Press Kit
  • Governance
  • Privacy Policy
  • Stay Updated
Mailing Address
Open Philanthropy
182 Howard Street #225
San Francisco, CA 94105
Email
info@openphilanthropy.org
Media Inquiries
media@openphilanthropy.org
Anonymous Feedback
Feedback Form

© Open Philanthropy 2025 Except where otherwise noted, this work is licensed under a Creative Commons Attribution-Noncommercial 4.0 International License.

We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept All”, you consent to the use of ALL the cookies. However, you may visit "Cookie Settings" to provide a controlled consent.
Cookie SettingsAccept All
Manage consent

Privacy Overview

This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience.
Necessary
Always Enabled
Necessary cookies are absolutely essential for the website to function properly. These cookies ensure basic functionalities and security features of the website, anonymously.
CookieDurationDescription
cookielawinfo-checkbox-analytics11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics".
cookielawinfo-checkbox-functional11 monthsThe cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional".
cookielawinfo-checkbox-necessary11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary".
cookielawinfo-checkbox-others11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other.
cookielawinfo-checkbox-performance11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Performance".
viewed_cookie_policy11 monthsThe cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data.
Functional
Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features.
Performance
Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors.
Analytics
Analytical cookies are used to understand how visitors interact with the website. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc.
Advertisement
Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. These cookies track visitors across websites and collect information to provide customized ads.
Others
Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet.
SAVE & ACCEPT