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Genetic Parameters for Linear Type Traits and Milk, Fat, and Protein Production in Holstein Cows in Brazil
Dairy Cattle Functional Trait Genetic Correlation Heritability Selection
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2016/5/18
The objective of this study was to estimate genetic and phenotypic parameters for linear type traits, as well as milk yield (MY), fat yield (FY) and protein yield (PY) in 18,831 Holstein cows reared i...
Estimation of Genetic Parameters for Real-time Ultrasound Measurements for Hanwoo Cows at Different Ages and Pregnancy Status
Real-time Ultrasound Heritability Cows Hanwoo
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2016/5/16
The purpose of this study was to estimate genetic parameters of ultrasound measurements for longissimus dorsi muscle area (LMA), backfat thickness (BFT), and marbling score (MS) in Hanwoo cows (N = 3,...
Genetic and Economic Analysis for the Relationship between Udder Health and Milk Production Traits in Friesian Cows
Somatic Cell Count Udder Traits Mastitis Genetic Parameters Economic Milk Losses
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2016/5/9
A total of 4,752 monthly lactation records of Friesian cows during the period from 2000 to 2005 were used to estimate genetic parameters and to determine the effect of udder health on milk production ...
Study on Genetic Evaluation for Linear Type Traits in Holstein Cows
Dairy Cattle Linear Type Trait Genetic Evaluation International Comparison
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2016/5/3
The objectives of this study were to i) investigate genetic performance for linear type traits of individual Holstein dairy cows, especially focusing on comparative traits, and to estimate genetic var...
Polymorphism of Bovine Lymphocyte Antigen DRB3.2 Alleles in Iranian Native Sarabi Cows
BoLA-DRB3.2 Polymerase Chain Reaction Restriction Fragment Length Polymorphism Iranian Native Sarabi Cows
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2016/4/21
Sarabi cows (n = 136) from the Sarabi Breeding Station were genotyped at bovine lymphocyte antigen (BoLA)- DRB3.2 locus by a genotyping system that used the polymerase chain reaction and restriction f...
Genetic Parameter Estimates for Ultrasonic Meat Qualities in Hanwoo Cows
Hanwoo Cows Ultrasound Beef Traits Genetic Parameters
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2016/4/21
Real time ultrasound data was generated on 10,596 live Hanwoo cows to study genetic variation on ultrasonic beef quality traits and to assess the best model to estimate genetic parameters on these tra...
Genetic Variation of Growth Hormone Gene and Its Relationship with Milk Production Traits in China Holstein Cows
China Holstein Cows Growth Hormone Gene PCR-RFLP Genetic Polymorphism Milk Production Traits
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2016/4/20
Associations were analysed between polymorphisms localized in intron 3 of the growth hormone gene (GH-MspI) and milk production traits of 543 China Holstein cows. A PCR-RFLP method was used for identi...
Genetic Parameters of Milk Yield and Milk Fat Percentage Test Day Records of Iranian Holstein Cows
Genetic Parameters TD Records Animal Model Iranian Holstein
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2016/4/20
Genetic parameters for first lactation milk production based on test day (TD) records of 56319 Iranian Holstein cows from 655 herds that first calved between 1991 and 2001 were estimated with restrict...
Heritability and Repeatability Estimates for Reproductive Traits of Japanese Black Cows
Reproductive Trait Japanese Black Cattle REML Heritability Repeatability
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2016/4/12
Reproductive data collected from more than 20,000 Japanese Black cows of Hyogo and Shimane Prefectures were analyzed. Averages of age at first calving, gestation length, days open and calving interval...
Estimation of Genetic Parameters for Calving Ease by Heifers and Cows Using Multi-trait Threshold Animal Models with Bayesian Approach
Calving Ease Genetic Parameter Multivariate Threshold Model Bayesian Method
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2016/4/11
Genetic parameters for birth weights (BWT), calving ease scores observed from calves born by heifers (CEH), and calving ease scores observed from calves born by cows (CEC) were estimated using Bayesia...