Theoretical basis and computational methods for different test-day genetic evaluation methods.

Abstract excerpt

In test-day (TD) models, records from individual test days are used to determine lactation production instead of aggregating records. Test-day models have recently gained considerable interest because they are more flexible in handling records from different recording schemes. Compared with only using records of complete lactations, they can reduce the generation interval through frequent genetic evaluations with...

Topics

• Animals
• Cattle
• Environment
• Female
• Genetic Variation
• Lactation
• Models, Biological
• Models, Statistical
• Records
• Regression Analysis
• Time Factors