Backyard Herd field guides

PAWLINE FIELD RESOURCES / ENGLISH ORIGINAL

Sources and method

A claim-by-claim source ledger, the sheep gestation-range correction, software limits and the privacy boundary for the arrival resource map.

PawLine editorial · Published and source-checked November 11, 2026 · No clinical review or field validation

What the sources support

Sources were fetched and read November 11, 2026. University Extension, government animal-health guidance and a welfare code support the principles. None of these sources endorses PawLine, validates this map or reviewed the completed site.

We selected primary public guidance rather than copying another planner. Legal context is named explicitly. Numerical protocols are not carried into the arrival map.

Wisconsin Extension: Biosecurity for bringing home new sheep and goats

University Extension; May 2, 2024 · fetched November 11, 2026

Used here

Arriving animals need a separate area, no nose-to-nose contact or shared feeders/waterers with the home herd, and a veterinarian-led protocol. Care order and equipment cleaning matter.

Boundary

Its 30-day isolation recommendation is not an automatic release rule in our tool.

USDA APHIS: Goat and Sheep Biosecurity

Federal animal-health guidance · fetched November 11, 2026

Used here

People, vehicles and equipment can carry pathogens; clean/dirty boundaries, managed contact and cleaning matter.

Boundary

A resource map cannot verify disease status or compliance with movement rules.

Cornell CALS: Goat Facilities

University youth livestock education · fetched November 11, 2026

Used here

Plan shelter with dry footing and access for water, bedding and cleaning. Feeder design needs attention to contamination and entrapment.

Boundary

Youth housing examples and dimensions are not universal specifications; no dimensions are copied into this planner.

Colorado State University Extension: Sheep and Goats

University Extension; October 3, 2025 · fetched November 11, 2026

Used here

Shelter, drainage, water and feed access belong in property planning; forage capacity depends on local conditions.

Boundary

We do not calculate acreage, stocking rate, forage allowance or a ration.

UK government: Welfare recommendations for sheep

Government welfare code; England context · fetched November 11, 2026

Used here

Feed/water equipment should reduce contamination and competition. Some substances, particularly copper, can harm sheep; other-species feeds/minerals need suitability assessment.

Boundary

This is not U.S. law or a mineral prescription. A nutrition professional must assess the actual product and animals.

Penn State Extension: Preparing for Lambing Season

University Extension · fetched November 11, 2026

Used here

The fetched page gives sheep gestation as 144-150 days. Preparation and professional contact precede expected lambing.

Boundary

A planning range is not a diagnosis, pregnancy confirmation, labor timer or permission to wait.

University of Arkansas Extension: Lamb and Kidding Season

University Extension · fetched November 11, 2026

Used here

The page separately gives sheep 144-152 days and goats 145-155 days after conception.

Boundary

The sheep range differs from Penn State. We name that disagreement, not an averaged new range.

Penn State Extension: The Normal Goat

University Extension course · fetched November 11, 2026

Used here

Existing calculator source for goat gestation; see Arkansas for the independently fetched 145-155-day range used on the revised calculator.

Boundary

The source is retained as further reading, not misattributed as the revised goat range.

Why the sheep calculator changed

The prior calculator used Penn State figures of 144-147 days for sheep. Penn State's Normal Goat table contains that range, and its livestock-planning page qualifies 144-147 as meat-sheep breeds and gives wool breeds 148-151. The generic calculator did not show that breed context. The separate Preparing for Lambing Season page gives 144-150 days, which is now the explicitly named sheep source. Arkansas gives sheep 144-152 and goats 145-155. We do not combine the sheep figures or pretend they agree.

The goat calculator explicitly attributes 145-155 days to Arkansas. Both outputs are reference planning windows from a known breeding date. They cannot confirm conception, pregnancy or normal labor, and must not delay veterinary help.

Sources: Penn State Extension: Preparing for Lambing Season · University of Arkansas Extension: Lamb and Kidding Season

Software checks and remaining gaps

The map is an editorial planning aid, not a validated biosecurity system. It checks defined relationships and missing fields, not animal welfare, disease status, actual access, veterinary instructions or a physical property. Zero flags does not establish readiness.

The fieldbook, worked examples and blank sheets are original resources. No veterinarian has clinically reviewed them and no farm field trial is claimed. The source evidence is stronger than an unsourced checklist, but it is not product-effectiveness evidence.

Privacy and portability

Entered values stay in browser storage when available. JSON and CSV are generated locally; import is read locally. No automatic account, upload, sync, appointment, treatment reminder or message is created. Ordinary hosting and app-link analytics remain in place. Export before clearing browser data or changing devices.

Editorial responsibility

By PawLine. This site promotes the PawLine app and is not an independent review. Source dates are check dates, not a claim that the source or clinical guidance will remain unchanged. Read the editorial policy.

PawLine app, patent pending. Educational planning only.

Additional source context: Penn State: The Normal Goat · Penn State: Introduction to Livestock.