搜索结果: 1-15 共查到“农学 genetic parameters”相关记录36条 . 查询时间(0.115 秒)
Genetic parameters for residual feed intake in a random population of Pekin duck
Genetic Parameters Residual Feed Intake Pekin Duck
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2017/3/8
The feed intake (FI) and feed efficiency are economically important traits in ducks. To obtain insight into this economically important trait, we designed an experiment based on the residual feed inta...
Genetic Parameters of Milk β-Hydroxybutyric Acid and Acetone and Their Genetic Association with Milk Production Traits of Holstein Cattle
Ketosis Milk β-Hydroxybutyrate Milk Acetone Milk Composition Genetic Parameters
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2016/11/10
This study was conducted to estimate the genetic parameters of β-hydroxybutyrate (BHBA) and acetone concentration in milk by Fourier transform infrared spectroscopy along with test-day milk production...
Estimation of Genetic Parameters and Trends for Length of Productive Life and Lifetime Production Traits in a Commercial Landrace and Yorkshire Swine Population in Northern Thailand
Genetic Parameters Length of Productive Life Lifetime Production Traits Swine Tropics
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2016/11/10
The objective of this research was to estimate genetic parameters and trends for length of productive life (LPL), lifetime number of piglets born alive (LBA), lifetime number of piglets weaned (LPW), ...
Comparison of models to estimate genetic parameters for scores of competitive sport horse events in the Czech Republic
show jumping sport horses breeding value random regression model multi-trait model
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2015/10/9
The objective of the present study was to estimate genetic parameters and predict breeding values of sport horses in the Czech Republic using animal model variations. The data set for the evaluation w...
Estimation of genetic parameters for reproductive traits in Mehraban sheep
heritability genetic correlation
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2015/7/7
Studied traits were litter size at birth (LSB), litter size at weaning (LSW), litter mean weight per lamb born
(LMWLB), litter mean weight per lamb weaned (LMWLW), total litter weight at birth (TLWB...
Changes over time in genetic parameters for growth in bulls and assessment of suitability of test methods
gain genetic analysis progeny test
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2015/7/3
Objectives of the study were to examine alternative measures of growth potential of bulls in testing stations, determine whether genetic parameter estimates of such traits changed over time, and exami...
Comparison of models for estimating genetic parameters and predicting breeding values for birth weight and calving ease in Czech Charolais cattle
beef cattle dystocia data transformation
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2015/7/2
The most appropriate model for genetic parameters estimation for calving ease and birth weight in beef cattle was selected. A total of 27 402 field records were available from the Czech Charolais bree...
Simultaneous estimation of genetic parameters for production and litter size traits in Czech Large White and Czech Landrace pigs
total number of piglets born number of piglets weaned lean meat content average daily gain heritability genetic correlation REML
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2015/6/24
Genetic parameters for total number of piglets born per litter, number of piglets weaned per litter, lean meat content, and average daily gain from birth till the end of the field test were estimated ...
Genetic parameters for female fertility and milk production traits in first-parity Czech Holstein cows
dairy cattle reproduction production
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2015/6/23
The aim of this study was to estimate genetic parameters for female fertility and production
traits in first-parity Czech Holstein cows and to quantify the effect of using this information on the ac...
Estimation of genetic parameters for melanoma in the Old Kladruber horse
melanoma linear model threshold model
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2015/6/23
The aim of this study was to assess the prevalence of melanoma to investigate a possible genetic
variation of this trait in the Old Kladruber horse. A total of 564 grey varieties of the Old Kladrube...
Genetic parameters including the service sire effect for the sow traits stillbirth and piglet losses in Czech Large White and Landrace
pig reproduction
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2015/6/23
Genetic parameters including the proportion of variance for the service sire effect were estimated
for number of piglets stillborn (including piglets died until 24 h after birth) and number of pigle...
Estimation of genetic parameters of reproductive traits in Zandi sheep using linear and threshold models
reproductive traits genetic parameters
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2015/6/23
Genetic parameters were estimated for four basic and two composite traits. Year of lambing
and age of ewe were used as fixed effects. Due to repeated record of ewe animal direct genetic effect...
Estimation of genetic parameters and evaluation of test-day milk production in sheep
dairy heritability model selection
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2015/6/23
The fixed effects
were estimated by the least-squares method, while the genetic parameters were estimated by the REML
method. The data were tested by 49 models, but on the basis of the coefficient...
Genetic parameters of test-day somatic cell scores for the first three lactations of Polish Holstein-Friesian cattle
heritability genetic correlation somatic cell count dairy cattle
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2015/6/9
Genetic parameters for somatic cell score in the first three lactations of Polish Holstein-Friesian cattle were estimated. A multiple-lactation model was applied with random herd-test-day effect, fixe...
Linear and linear-threshold model for genetic parameters for SEUROP carcass traits in Czech beef cattle
genetic parameters heritability genetic correlation REML EUROP
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2015/6/9
The objective of this study was to estimate genetic parameters for the results of classifying of carcass traits by the SEUROP method in beef cattle in the Czech Republic using linear and linear-thresh...