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Random Regression Models Using Legendre Polynomials to Estimate Genetic Parameters for Test-day Milk Protein Yields in Iranian Holstein Dairy Cattle
Holstein Dairy Cattle Milk Protein Yields Random Regression Model Test-day Records
2016/12/28
The objective of this study was to estimate the genetic parameters of milk protein yields in Iranian Holstein dairy cattle. A total of 1,112,082 test-day milk protein yield records of 167,269 first la...
Estimation of Genetic Parameters for First Lactation Monthly Test-day Milk Yields using Random Regression Test Day Model in Karan Fries Cattle
Test-day Milk Yield Random Regression Model Heritability Genetic Correlation Karan Fries Cattle
2016/7/27
A single trait linear mixed random regression test-day model was applied for the first time for analyzing the first lactation monthly test-day milk yield records in Karan Fries cattle. The test-day mi...
Lactation Persistency as a Component Trait of the Selection Index and Increase in Reliability by Using Single Nucleotide Polymorphism in Net Merit Defined as the First Five Lactation Milk Yields and Herd Life
Economic Weights Milk Yield Persistency Herd Life Selection Index
2016/5/10
We first sought to clarify the effects of discounted rate, survival rate, and lactation persistency as a component trait of the selection index on net merit, defined as the first five lactation milks ...
Genetic Evaluation and Calculating Daughter Yield Deviation of Bulls in Iranian Holstein Cattle for Milk and Fat Yields
Daughter Yield Deviation Genetic Evaluation Genetic Trend Holstein Cows
2016/4/29
This study was aimed at a genetic evaluation of Iranian Holstein cattle for milk and fat yields and calculating daughter yield deviation (DYD) of bulls. The data file that was used in this research in...
Effects of Timing of Initial Cutting and Subsequent Cutting on Yields and Chemical Compositions of Cassava Hay and Its Supplementation on Lactating Dairy Cows
Cassava Hay Cutting Foliage Milk Yield and Compositions Concentrate Rumen Environment
2016/4/14
Two experiments were conducted to examine the production and quality of cassava hay and its utilization in diets for dairy cows. In experiment I, a 2횞2 Factorial arrangement in a randomized com...