The Border Leicester Production System
From Ewe to Lamb — Step by Step
Navigate through the five stages of the Border Leicester × Merino production system. Each step builds on the last to create a profitable, flexible enterprise.
Why Border Leicester?
The Numbers That Matter
#1Maternal Breed
Proven over generations as Australia's leading maternal breed for prime lamb production.
3Income Streams
Wool from the Merino base, F1 ewe sales, and prime lamb income from the terminal cross.
F1Predictable Product
Clear, repeatable breed roles deliver a consistent first-cross ewe every joining.
150+Years of History
A long Australian commercial history with a widespread, established breeder base.
Interactive Tool
Ram Selection Calculator
Adjust the ASBV sliders to see how your ram selection impacts lamb growth, days to market, and carcase traits. Save calculations or log full breeding records.
Adjust ASBV Values
Above average — strong growth potential
Projected Outcomes
↗326g/day
Daily Growth Rate
⌁86days
To 43kg Market
⚖23.4kg
Est. Carcase Weight
⚖58.6%
Lean Meat Yield
Growth Curve — Your Ram vs Industry Average
Your ramIndustry avg
Model based on DPIRD LAMBPLAN trial data. High PWT rams produced lambs growing 50g/head/day quicker than low PWT rams. Actual results vary with nutrition, season and management.
▦ Border Leicester Ram Sales
View the Border Leicester Ram Sale Calendar
Find upcoming ram sale dates, locations and vendor contacts across Australia.
View Ram Sale Calendar ↗How It Compares
Production System Comparison
How the Border Leicester × Merino system responds to alternative production approaches. Tap each system to explore.
Data-Driven Selection
LAMBPLAN & ASBVs
Australian Sheep Breeding Values let you objectively compare rams across flocks and select for the traits that drive your profitability. A ram contributes half the total genetics of every lamb and breeding ewe.
Growth
Weight & growth heritability
Fat & Muscle
Carcase trait heritability
Reproduction
Reproductive trait heritability
Database
Sheep records analysed
What LAMBPLAN Evaluates
- Growth traits at every life stage — birth, weaning, yearling, hogget, adult
- Fat and eye muscle depth via accredited operators
- Wool weight and quality traits
- Reproduction and maternal traits — fertility, milking, mothering
- Internal parasite (worm) resistance
- Across-flock and across-breed comparison for terminal sires
“High PWT rams produced lambs that grew 50g/head/day quicker than those sired by low PWT rams.”— Central NSW trial, 2000 crossbred ewes