Age at First Calving in Angus Cows Bred in Hungary
Author Information
Author(s): Márton Judit, Bene Szabolcs Albin, Szabó Ferenc
Primary Institution: Hungarian Hereford, Angus and Galloway Breeders Association
Hypothesis
What are the heritability estimates and correlation factors affecting the age at first calving in Angus cows?
Conclusion
The study found that environmental factors significantly influence the age at first calving, with higher heritability estimates suggesting potential for genetic selection.
Supporting Evidence
- The average age at first calving was found to be 28.1 months.
- Significant effects were observed from the birth season, herd, and sire on the age at first calving.
- Direct heritability estimates for age at first calving were higher than previously reported.
Takeaway
This study looks at how old Angus cows are when they have their first calf and finds that things like the season they were born in can really affect that age.
Methodology
The study analyzed data from 2955 registered cows and 200 breeding bulls using general linear models and best linear unbiased prediction to evaluate heritability and genetic trends.
Limitations
The study did not account for all potential environmental influences and focused on a specific breed in Hungary.
Participant Demographics
The study included Angus cows and breeding bulls from Hungary, with data spanning from 1998 to 2021.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
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