---
type: "Bill"
title: "Livestock diseases; declaring Oklahoma brucellosis free. Effective date."
description: "Livestock diseases; declaring Oklahoma brucellosis free. Effective date."
jurisdiction: "us/states/ok"
legislature: "Oklahoma Legislature"
session: "2020"
identifier: "SB 545"
citation: "Oklahoma SB 545 (2020)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Pederson", "Pfeiffer"]
version_count: 5
action_count: 22
vote_count: 0
first_action: "2019-02-04"
last_action: "2019-04-16"
source: "openstates"
source_identifier: "ocd-bill/113dc859-e3cd-4c4f-bec4-d141b29f2dd6"
source_url: "http://www.oklegislature.gov/BillInfo.aspx?Bill=SB545&session=2000"
source_hash: "3fdb2a4dcde3f30dd72af02c7781a977eed67ad244439c1a5b870a35d547e5e7"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-ok"]
---

# Oklahoma SB 545 (2020) — Livestock diseases; declaring Oklahoma brucellosis free. Effective date.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Introduced** (filed) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2019-20 INT/SB/SB545 INT.PDF)
2. **Engrossed** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2019-20 ENGR/SB/SB545 ENGR.PDF)
3. **Enrolled (final version)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2019-20 ENR/SB/SB545 ENR.PDF)
4. **Floor (House)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2019-20 FLR/HFLR/SB545 HFLR.PDF)
5. **Floor (Senate)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2019-20 FLR/SFLR/SB545 SFLR.PDF)

## Sponsors

- Pederson — primary (person)
- Pfeiffer — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2019-02-04** First Reading `introduction, reading-1`
- **2019-02-04** Authored by Senator Murdock
- **2019-02-05** Second Reading referred to Agriculture and Wildlife `referral-committee, reading-2`
- **2019-02-05** Remove as author Senator Murdock; authored by Senator Pederson
- **2019-02-05** Coauthored by Senator Murdock
- **2019-02-11** Reported Do Pass Agriculture and Wildlife committee; CR filed `committee-passage`
- **2019-02-28** Coauthored by Representative Pfeiffer (principal House author)
- **2019-03-05** General Order, Considered
- **2019-03-05** Measure passed: Ayes: 46 Nays: 0 `passage`
- **2019-03-05** Referred for engrossment
- **2019-03-06** Engrossed to House `passage`
- **2019-03-06** First Reading `introduction, reading-1`
- **2019-03-19** Second Reading referred to Agriculture and Rural Development `referral-committee, reading-2`
- **2019-04-01** CR; Do Pass Agriculture and Rural Development Committee `committee-passage`
- **2019-04-09** General Order
- **2019-04-09** Third Reading, Measure passed: Ayes: 92 Nays: 0 `passage, reading-3`
- **2019-04-09** Signed, returned to Senate
- **2019-04-09** Referred for enrollment
- **2019-04-10** Enrolled, to House
- **2019-04-10** Signed, returned to Senate
- **2019-04-10** Sent to Governor `executive-receipt`
- **2019-04-16** Approved by Governor 04/16/2019 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/113dc859-e3cd-4c4f-bec4-d141b29f2dd6`. Confidence: reported (aggregated from official Oklahoma legislature records).