Growth
Our approach to growth focuses on maximising the advantages of rapid early development while maintaining the efficiency of moderate adult weights and great wool yield.
By integrating muscle depth into our growth selection process, we effectively manage adult weights, achieving a balance that promotes high reproductive success, increased fleece production, better ewe lamb joinings, earlier readiness for market, higher lean meat yield, and controlled adult weight.
Exceptional Growth Performance
Our flock’s performance is well above the industry average, particularly in key growth metrics. For Yearling Weight (YWT), our lambs are 7.85 kilograms heavier than the industry standard when they reach one year old, reflecting their superior growth rate and overall health. Additionally, their Post-Weaning Weight (PWT) is equally impressive, with an average of 6.1 kilograms above the industry average at weaning. These figures underscore the exceptional quality and robustness of our flock, ensuring that our lambs consistently outperform the competition in terms of weight and growth.
Traits
Yearling Weight
Yearling Weight (YWT) for HR Polls is 10% above the industry average, demonstrating the early-growth ability of HR progeny, whilst maintaining wool quality and cut
Correlations of increased growth:
- Genetic differences in live weight reflect the growth potential of an animal
- Higher reproductive performance
- Marketable at earlier ages
- Higher fleece weight
- Higher lean meat yield
Post Weaning Weight
Weight (kg) WT
Estimates the genetic difference between animals in live weight.
Post Weaning: PWT estimates the genetic difference between animals in live weight at 225 days of age.
- HR has seen a 10% increase in Post Weaning Weight (PWT) since 2013
- 20% increase in Yearling Eye Muscle Depth (YEMD). Rams with more positive ASBVs for EMD will produce progeny that have more muscle, independent of weight, and a higher lean meat yield.
- 10% increase in Weaning Rate (WR). WR calculates the predicted number of lambs weaned per ewes joined for maternal and Merino animals.
Sustainable Merino
The Sustainable Merino (SM) trait reflects Haddon Rig’s dedication to breeding resilient, high-performing merinos that excel in both wool and meat production, while supporting long-term sustainability.
Our SM index consistently surpasses the breed average, as shown by significant improvements since 2020. This progress highlights our focus on breeding sheep with superior adaptability, welfare, and environmental resilience. At Haddon Rig, we are committed to producing merinos that thrive in diverse conditions, ensuring sustainable outcomes for woolgrowers and contributing to a more eco-friendly future for the merino industry.
