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Breed profile · FDA CVM July 2026 extract

Jersey adverse-event record

Adverse-event filings for Jersey (Cattle) in the FDA Center for Veterinary Medicine openFDA extract. Browse cattle breeds, reactions, and outcomes below.

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#163 of 510
by report volume (all breeds)
333
FDA CVM reports on file
37.8%
death-coded share of reports
#20 of 275
by death-coded share (≥50 reports)

How the 333 reports break down

By recorded gender -- every report on file for Jersey, no filtering.

Annual report volume

Annual adverse-event report trend Yearly FDA CVM adverse-event report counts for this breed. 25 18.75 12.5 6.25 0 2019 2020 2021 2022 2023 2024 2025 2026 Reports filed Death-coded reports
Annual report volume for Jersey drawn from FDA CVM filings.

Data updated September 2026

The verdict

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Jersey ranks #163 of 510 by total reports (333) and #20 of 275 by death-coded share (37.8%). National dual: Retriever - Labrador is #1 of 510 by total adverse-event reports (93,675) at death-coded-share rank 195 of 275 breeds with at least 50 reports (3.7%); separately, Atlantic Salmon (Salmo salar) is #1 highest death-coded share at 99.0% (report rank #233).

93,675
Retriever - Labrador reports (#1)
99.0%
Atlantic Salmon (Salmo salar) death share (#1)
#163
This breed, reports of 510
#20
This breed, death share of 275

Report volume reflects how common a breed or drug is and how often owners and vets file — not actual risk. Death-coded share ranks are limited to entries with enough reports to be meaningful. The two maps do not agree at #1.

Release-over-release change

What changed in the latest FDA data snapshot

PlainBreed reconstructed the prior snapshot from dated openFDA partitions through 2025 Q4, then compared it with the 2026-07-27 openFDA export. Jersey has 333 reports now versus 330 in that prior snapshot: 3 more (0.9%).

Report change
+3
Death-coded reports
+1
Death-coded share
−0.0 pts

This compares reported-event counts in two source snapshots. It does not establish a change in real-world risk, product safety, or disease incidence.

Subscribe to Jersey changes

Total Reports

333

Above-median volume

Deaths Reported

126

of 333 reports

Death-coded share of reports

37.8%

Highest death-coded share

Avg Age at Report

1.7 yr

234.9 kg avg weight

Breed Safety Scorecard

F (15/100)

A weighted composite across 4 of 4 dimensions, each benchmarked against every tracked breed with at least 200 reports (n=185). Dimensions with insufficient data drop out and their weight redistributes to the rest, so a missing input never silently deflates the score.

Death rate F
37.8%

Share of reports coded as a fatality

Euthanasia rate F
7.2%

Share of reports resulting in euthanasia

Full recovery rate F
15.9%

Share of reports coded "Recovered/Normal"

5-year trend B-
-6%

Change in annual report volume over the last 5 complete years

Death-Coded Outcome Share

Jersey death-coded reports 37.8%
Cross-breed median

37.8% of 333 jersey 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 (4.8%) among breeds with 50 or more reports; values above it suggest higher reporting bias toward severe outcomes, not necessarily higher true mortality.

Where Jersey's death-coded share sits among indexed breeds

Death-coded share of FDA CVM reports, breeds with ≥50 reports (July 2026 extract)

38% 93rd percentile Higher share than 93% of 275 indexed breeds

5%–10%: 1 indexed breeds (0%). Below this entry. 20%–25%: 2 indexed breeds (1%). Below this entry. 25%–30%: 3 indexed breeds (1%). Below this entry. 30%–35%: 4 indexed breeds (1%). Below this entry. 35%–40%: 5 indexed breeds (2%). This entry sits in this band. 40%–45%: 6 indexed breeds (2%). Above this entry. 45%–50%: 3 indexed breeds (1%). Above this entry. 50%–55%: 7 indexed breeds (3%). Above this entry. 55%–60%: 7 indexed breeds (3%). Above this entry. 60%–65%: 21 indexed breeds (8%). Above this entry. 65%–70%: 11 indexed breeds (4%). Above this entry. 70%–75%: 15 indexed breeds (5%). Above this entry. 75%–80%: 13 indexed breeds (5%). Above this entry. 80%–85%: 11 indexed breeds (4%). Above this entry. 85%–90%: 12 indexed breeds (4%). Above this entry. 90%–95%: 12 indexed breeds (4%). Above this entry. 95%–100%: 142 indexed breeds (52%). Above this entry. Jersey 5% 100% every breed with ≥50 FDA reports, bucketed by value

Each bar is a band; taller bars hold more indexed breeds. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source FDA Center for Veterinary Medicine, openFDA adverse event extract (PlainBreed) · July 2026 extract

This histogram uses the same ≥50-report cohort as the highest death-coded share ranking. A higher share means more of this breed's reported events were death-coded, not a mortality rate for living animals.

Average weight at time of report: 234.9 kg (518.0 lbs)

Top Reported Reactions

Death 94
Lack of efficacy - NOS 38
Lack of efficacy (bacteria) - NOS 24
Lack of efficacy (protozoa) - Coccidia 22
Diarrhoea 19
Injection site swelling 19
Milk production decrease 18
Death by euthanasia 18

Most Referenced Drugs

Monensin Sodium 90
Sometribove 30
Ceftiofur Hydrochloride 26
Tulathromycin 16
Dinoprost Tromethamine 15
Tildipirosin Injectable 15
Cephapirin Sodium 14
Ceftiofur Crystalline Free Acid 14

Outcome Breakdown

Outcome Unknown
159 (41.7%)
Died
104 (27.3%)
Recovered/Normal
53 (13.9%)
Ongoing
32 (8.4%)
Euthanized
24 (6.3%)
Recovered with Sequela
9 (2.4%)

Gender Distribution

Female 292 (87.7%)
Unknown 21 (6.3%)
Mixed 10 (3.0%)
Male 10 (3.0%)

Reports by Year

Year Reports Trend
2010 14
2011 15
2012 19
2013 30
2014 17
2015 28
2016 37
2017 28
2018 26
2019 25
2020 20
2021 17
2022 10
2023 15
2024 13
2025 16
2026 3

Jersey: high death-coded share in the FDA CVM extract

Signature read: Jersey's 37.8% death-coded share is in the upper third of the ≥50-report cohort (median 4.8%). According to FDA CVM filings indexed on PlainBreed as of July 2026 extract, Jersey sits at #163 of 510 by report volume among all breeds and #7 of 30 among cattle breeds, with 333 reports and 126 (37.8%) death-coded. On death-coded share among breeds with ≥50 reports, it ranks #20 of 275. Mean age at report: 1.7 years, average weight 234.9 kg (518.0 lbs).

Top reported signs: Death (94), Lack of efficacy - NOS (38), Lack of efficacy (bacteria) - NOS (24). Most-referenced drug: Monensin Sodium (90 reports), followed by Sometribove (30) and Ceftiofur Hydrochloride (26).

Outcome coding on 381 status-recorded reports is dominated by Outcome Unknown (41.7%). Annual submissions ranged 3-2,026 across 17 years on file.

Cattle Breeds With a Similar Report Volume

Showing 6 of 29 cattle breeds in our dataset, ranked by closest report volume.

Hereford cattle
148 reports · 31.8% death-coded
Charolais
129 reports · 38.0% death-coded
Red Angus
107 reports · 48.6% death-coded
Cattle (unspecified)
103 reports · 39.8% death-coded
Simmental
96 reports · 39.6% death-coded
Brangus
65 reports · 43.1% death-coded

Nationwide breeds with similar profiles

High-volume peer sets for Jersey drawn from openFDA outside the Cattle family so the neighborhoods are not species containment (the similar-volume list above stays within species).

Similar death-coded share

Nearest other-species breeds with ≥50 reports (37.8% death-coded here).

Goat (unknown) 36.9% · Goat Rabbit (other) 36.5% · Rabbit Crossbred Porcine/Pig 44.2% · Pig Rabbit (unknown) 31.0% · Rabbit

Similar average weight

Nearest other-species breeds by reported average weight (234.9 kg here).

Shire 238.1 kg · Horse Donkey (unknown) 201.4 kg · Donkey Clydesdale 269.0 kg · Horse Hackney 271.1 kg · Horse

What to do with this cattle

A report does not prove a drug caused the reaction, and popular breeds simply generate more reports.

Frequently Asked Questions

How many FDA adverse event reports involve Jersey? ▼
There are 333 adverse event reports involving Jersey in the FDA database, of which 126 were death-coded (37.8% of those reports). That is a share of REPORTED events, not a mortality rate for the breed: adverse events reach the FDA when something goes wrong, so the denominator is reports, never the population of animals. According to the same FDA CVM extract, Jersey ranks #163 of 510 by report volume among all breeds PlainBreed indexes (#7 of 30 among cattle breeds).
Where does Jersey sit among other breeds in PlainBreed's corpus? ▼
According to FDA CVM report volume, Jersey is #163 of 510 breeds indexed on PlainBreed (same ordering as the most-reported-breeds ranking). Inside Cattle, it is #7 of 30. Among breeds with at least 50 reports, its death-coded share ranks #20 of 275 (same cohort as highest-death-rate). These are placement ranks in the reporting corpus, not clinical risk scores.
What are the most common adverse reactions reported for Jersey? ▼
The most commonly reported adverse reactions for Jersey are Death (94 reports), Lack of efficacy - NOS (38 reports), Lack of efficacy (bacteria) - NOS (24 reports), Lack of efficacy (protozoa) - Coccidia (22 reports), Diarrhoea (19 reports).
What drugs are most frequently associated with Jersey adverse events? ▼
The drugs most frequently referenced in Jersey adverse event reports are Monensin Sodium (90 reports), Sometribove (30 reports), Ceftiofur Hydrochloride (26 reports), Tulathromycin (16 reports), Dinoprost Tromethamine (15 reports).
What is the average age of Jersey in adverse event reports? ▼
The average age of Jersey at the time of adverse event reports is 1.7 years, with an average weight of 234.9 kg (518.0 lbs).

Compare a breed's report volume against how common the breed is before drawing conclusions. See our methodology for how the death-coded share and rankings are computed, or read breed-specific reporting patterns and FDA CVM reporting.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

openFDA Animal & Veterinary Adverse Events (FDA CVM) for Jersey (Cattle), extract as of July 2026 extract. 333 reports · 126 death-coded (37.8% of reports, not a mortality rate) · #163 of 510 by volume.

Informational only. FDA adverse-event reports are voluntary and do not prove causation; consult a veterinarian before acting on them. Verify with FDA CVM →