Total Reports
145
FDA CVM filings
Cattle /
FDA CVM · 2025 release 145 reports on file
Hereford cattle - FDA Adverse Event Profile
Adverse-event records for Hereford cattle (Cattle) from the FDA Center for Veterinary Medicine.
Data updated June 2026
The record at a glance
Hereford cattle's FDA record: #208 most-reported cattle breed, 145 total reports, 31.0% death-coded (45 reports).
- #208
- most-reported cattle breed
- 31.0%
- death-coded report share
- 39
- Death - top reaction
- 1.3 yr
- average age at report
Higher volume usually means a more popular breed, not a riskier one, compare against how common the breed is.
Deaths Reported
45
of 145 reports
Death Rate
31.0%
death-coded share
Avg Age at Report
1.3 yr
277.3 kg avg weight
Death-Coded Outcome Share
Hereford cattle death-coded reports 31.0%
Cross-breed median
31.0% of 145 hereford cattle 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: 277.3 kg (611.4 lbs)
Top Reported Reactions
Death 39
Lack of efficacy - NOS 23
Lack of efficacy (ectoparasite) - lice 17
Injection site swelling 14
INEFFECTIVE, ESTRUS SYNCHRONIZ 10
Dyspnoea 6
Lack of efficacy (bacteria) - NOS 5
Hypersalivation 5
Most Referenced Drugs
Progesterone 13
Dinoprost Tromethamine 13
Doramectin 12
Tulathromycin 12
Moxidectin 9
Eprinomectin 9
Ivermectin 8
Enrofloxacin 5
Outcome Breakdown
Outcome Unknown
58 (40.6%)
Died
43 (30.1%)
Recovered/Normal
24 (16.8%)
Ongoing
13 (9.1%)
Euthanized
3 (2.1%)
Recovered with Sequela
2 (1.4%)
Gender Distribution
Female 57 (39.3%)
Mixed 37 (25.5%)
Male 35 (24.1%)
Unknown 16 (11.0%)
Reports by Year
| Year | Reports | Trend |
|---|---|---|
| 2010 | 15 | |
| 2011 | 11 | |
| 2012 | 7 | |
| 2013 | 10 | |
| 2014 | 9 | |
| 2015 | 11 | |
| 2016 | 8 | |
| 2017 | 13 | |
| 2018 | 12 | |
| 2019 | 6 | |
| 2020 | 6 | |
| 2021 | 8 | |
| 2022 | 10 | |
| 2023 | 9 | |
| 2024 | 5 | |
| 2025 | 5 | |
Hereford cattle Pet Health Insights
Hereford cattle accounts for 145 FDA adverse event reports, ranking #208 by volume among cattle breeds, with 45 reports (31.0%) coded as a death outcome. Mean age at report: 1.3 years, average weight 277.3 kg (611.4 lbs).
Top reported signs: Death (39), Lack of efficacy - NOS (23), Lack of efficacy (ectoparasite) - lice (17). Most-referenced drug: Progesterone (13 reports), followed by Dinoprost Tromethamine (13) and Doramectin (12).
Outcome coding on 143 status-recorded reports is dominated by Outcome Unknown (40.6%). Annual submissions ranged 2,010-2,025 across 16 years on file.
Cattle Breeds With a Similar Report Volume
Frequently Asked Questions
How many FDA adverse event reports involve Hereford cattle? ▼
There are 145 adverse event reports involving Hereford cattle in the FDA database, with 45 reports involving death (31.0% death rate). Hereford cattle ranks #208 by report volume.
What are the most common adverse reactions reported for Hereford cattle? ▼
The most commonly reported adverse reactions for Hereford cattle are Death (39 reports), Lack of efficacy - NOS (23 reports), Lack of efficacy (ectoparasite) - lice (17 reports), Injection site swelling (14 reports), INEFFECTIVE, ESTRUS SYNCHRONIZ (10 reports).
What drugs are most frequently associated with Hereford cattle adverse events? ▼
The drugs most frequently referenced in Hereford cattle adverse event reports are Progesterone (13 reports), Dinoprost Tromethamine (13 reports), Doramectin (12 reports), Tulathromycin (12 reports), Moxidectin (9 reports).
What is the average age of Hereford cattle in adverse event reports? ▼
The average age of Hereford cattle at the time of adverse event reports is 1.3 years, with an average weight of 277.3 kg (611.4 lbs).
Does a high number of adverse event reports mean Hereford cattle 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 Hereford cattle 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.