The Holstein Association USA has revised the stature scale that serves as a tool for measuring the size of Holstein cows in the Classification program. The changes ensure a fair representation of cow stature across the population, aligning the scale with average sizes in current herds and enhancing the precision of genetic and conformation evaluations.
The old stature scale of 51 to 61 inches has now been updated to 55 to 65 inches. The Classification program offers an unbiased evaluation of cattle based on conformation and genetic merit which assesses 17 individual traits, providing a comprehensive look at each animal’s strengths and weaknesses.
Source: Bullvine, November 27, 2024. Link. While larger Holsteins can potentially lead to higher milk yields, the implications for housing, feeding, and overall health cannot be ignored. Here are key points of consideration:
- Increased height can strain barn facilities that are not designed for larger animals
- Larger cows may face more skeletal and mobility issues, impacting longevity
- A balance between stature and health should guide future breeding programs
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