Total Reports
10
FDA CVM filings
Chicken /
FDA CVM · 2025 release 10 reports on file
Cornish Cobb - FDA Adverse Event Profile
Adverse-event records for Cornish Cobb (Chicken) from the FDA Center for Veterinary Medicine.
Data updated June 2026
The record at a glance
Among chicken breeds, Cornish Cobb is #432 by FDA report volume; 60.0% of its 10 reports (6) were death-coded.
- #432
- most-reported chicken breed
- 60.0%
- death-coded report share
- 6
- Death - top reaction
- 0.0 yr
- average age at report
Read report counts next to breed popularity: a bigger number often just means more owners and more vet visits.
Deaths Reported
6
of 10 reports
Death Rate
60.0%
death-coded share
Avg Age at Report
0.0 yr
1.0 kg avg weight
Death-Coded Outcome Share
Cornish Cobb death-coded reports 60.0%
Cross-breed median
60.0% of 10 cornish cobb reports involved a death outcome.
How to read this number
Read alongside breed popularity, veterinary access, and owner awareness, these shape how many events ever reach the FDA. The comparison line marks the cross-breed median death-coded share (about 4.8%) among breeds with 50 or more reports; values above it suggest higher reporting bias toward severe outcomes, not necessarily higher true mortality.
Average weight at time of report: 1.0 kg (2.2 lbs)
Top Reported Reactions
Death 6
Lack of efficacy (protozoa) - Coccidia 5
Lack of efficacy - NOS 3
Dehydration 3
Enteritis 2
Most Referenced Drugs
Narasin 6
Tylosin Phosphate 3
Narasin; Nicarbazin 3
Monensin Sodium 2
Cinnamon Extracts 1
Outcome Breakdown
Outcome Unknown
6 (42.9%)
Died
5 (35.7%)
Euthanized
2 (14.3%)
Recovered/Normal
1 (7.1%)
Gender Distribution
Unknown 4 (40.0%)
Male 3 (30.0%)
Mixed 3 (30.0%)
Reports by Year
| Year | Reports | Trend |
|---|---|---|
| 2011 | 1 | |
| 2012 | 3 | |
| 2013 | 1 | |
| 2014 | 5 | |
Cornish Cobb Pet Health Insights
Cornish Cobb accounts for 10 FDA adverse event reports, ranking #432 by volume among chicken breeds, with 6 reports (60.0%) coded as a death outcome. Mean age at report: 0.0 years, average weight 1.0 kg (2.2 lbs).
Top reported signs: Death (6), Lack of efficacy (protozoa) - Coccidia (5), Lack of efficacy - NOS (3). Most-referenced drug: Narasin (6 reports), followed by Tylosin Phosphate (3) and Narasin; Nicarbazin (3).
Outcome coding on 14 status-recorded reports is dominated by Outcome Unknown (42.9%). Annual submissions ranged 2,011-2,014 across 4 years on file.
Chicken Breeds With a Similar Report Volume
Frequently Asked Questions
How many FDA adverse event reports involve Cornish Cobb? ▼
There are 10 adverse event reports involving Cornish Cobb in the FDA database, with 6 reports involving death (60.0% death rate). Cornish Cobb ranks #432 by report volume.
What are the most common adverse reactions reported for Cornish Cobb? ▼
The most commonly reported adverse reactions for Cornish Cobb are Death (6 reports), Lack of efficacy (protozoa) - Coccidia (5 reports), Lack of efficacy - NOS (3 reports), Dehydration (3 reports), Enteritis (2 reports).
What drugs are most frequently associated with Cornish Cobb adverse events? ▼
The drugs most frequently referenced in Cornish Cobb adverse event reports are Narasin (6 reports), Tylosin Phosphate (3 reports), Narasin; Nicarbazin (3 reports), Monensin Sodium (2 reports), Cinnamon Extracts (1 reports).
What is the average age of Cornish Cobb in adverse event reports? ▼
The average age of Cornish Cobb at the time of adverse event reports is 0.0 years, with an average weight of 1.0 kg (2.2 lbs).
Does a high number of adverse event reports mean Cornish Cobb is unhealthy? ▼
No. FDA adverse event reports are voluntarily submitted and do not prove causation. Popular breeds with more veterinary visits tend to have more reports. The data reflects reporting patterns, not actual incidence rates. Always consult a veterinarian for health decisions.
Where does this Cornish Cobb safety data come from? ▼
All data comes from the FDA Center for Veterinary Medicine's adverse event reporting system. Pet owners, veterinarians, and manufacturers voluntarily submit reports about adverse events potentially linked to animal drugs and other products.
Compare a breed's report volume against how common the breed is before drawing conclusions. See our methodology for how death rate and rankings are computed.
Every figure on PlainBreed is rendered directly from FDA openFDA adverse event data, no number is typed in by an editor. Breed figures are computed directly from FDA openFDA data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.