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Estimation of Genetic Parameters for Milk Production Traits Using a Random Regression Test-day Model in Holstein Cows in Korea
Random Regression Model Heritability Test-day Milk Production Traits Heterogeneity
2009/4/29
This study was conducted to compare three models: two random regression models with and without considering heterogeneity in the residual variances and a lactation model (LM) for evaluating the geneti...
Association of Leptin Polymorphism with Production, Reproduction and Plasma Glucose Level in Iranian Holstein Cows
Holstein Cows Leptin Polymorphism Milk Yield Reproductive Performance
2006/4/21
The objective of this study was to evaluate the association of genetic differences in the bovine leptin gene and milk yield, reproduction, body condition score (BCS), and plasma glucose level in Irani...
Study on Milkability Traits in Holstein Cows
Milkability Holstein Cow Correlation Milking Time Milking Speed
2006/4/20
The present investigation was undertaken to study the milkability characteristics of Holstein cows. Out of 6,660 initial records 4,607 records were finally included in the analysis after deleting some...