Climate-influenced performance and offspring development of merino sheep in a dry temperate-cold valley
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View abstract on PubMed
Summary
This summary is machine-generated.Relocating aged Merino sheep to a temperate valley improved maternal weight slightly. Their offspring showed significantly enhanced growth, reaching a higher asymptotic weight, indicating better development in the new environment.
Area Of Science
- Animal Science
- Environmental Science
- Agricultural Science
Background
- Merino sheep performance is influenced by environmental conditions.
- Relocation from arid, cold regions to temperate valleys presents adaptation challenges.
- Understanding climate impacts on sheep growth is crucial for livestock management.
Purpose Of The Study
- To assess the effects of climate change on Merino sheep performance and offspring development.
- To model sheep growth curves using dynamic, non-autonomous differential equations.
- To compare maternal and offspring growth patterns post-relocation.
Main Methods
- Utilized time series data from Merino sheep in southern Argentina.
- Developed a dynamic growth model based on the Brody model.
- Incorporated variables: temperature, age, sex, origin, and pregnancy status.
Main Results
- Relocated sheep gained an average of 1 kg.
- Offspring achieved an asymptotic weight of 65 kg, 17 kg more than mothers.
- Optimal temperature for growth rate: 15.7°C; for asymptotic weight: 8.7°C.
Conclusions
- Environmental shifts significantly impact sheep growth dynamics.
- Offspring exhibit greater growth potential in improved pasture conditions.
- Climate and environmental factors are key determinants of livestock productivity.
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