scholarly journals Estimation of Genetic Parameters for Growth Traits in a Crossbred Population Derived from Piedmontese and Nanyang Cattle Using a Multi-Trait Animal Model

2012 ◽  
Vol 11 (10) ◽  
pp. 1570-1573
Author(s):  
J. Chen ◽  
H.B. Zhu ◽  
D. Wang ◽  
F.Q. Wang ◽  
H.S. Hao ◽  
...  
Keyword(s):  
Animal Model ◽  
Genetic Parameters ◽  
Growth Traits ◽  
Estimation Of Genetic Parameters

Estimation of genetic parameters for growth traits of Japanese flounder Paralichthys olivaceus using an animal model

2010 ◽  
Vol 77 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Yong-Xin Liu ◽  
Gui-Xing Wang ◽  
Yu-Fen Wang ◽  
Fei Si ◽  
Zhao-Hui Sun ◽  
...  
Keyword(s):  
Animal Model ◽  
Genetic Parameters ◽  
Growth Traits ◽  
Paralichthys Olivaceus ◽  
Japanese Flounder ◽  
Estimation Of Genetic Parameters

Estimation of genetic parameters and breeding values for growth traits in grass carp (Ctenopharyngodon idellus)

2018 ◽  
Vol 25 (1) ◽  
pp. 18
Author(s):  
Peng JIANG ◽  
Linqiang HAN ◽  
Junjie BAI ◽  
Jiajia FAN ◽  
Baixiang CHEN ◽  
...  
Keyword(s):  
Grass Carp ◽  
Genetic Parameters ◽  
Growth Traits ◽  
Ctenopharyngodon Idellus ◽  
Breeding Values ◽  
Estimation Of Genetic Parameters

Application of multivariate heavy-tailed distributions to residuals in the estimation of genetic parameters of growth traits in beef cattle1

2013 ◽  
Vol 91 (4) ◽  
pp. 1552-1561 ◽  
Author(s):  
S. O. Peters ◽  
K. Kizilkaya ◽  
D. J. Garrick ◽  
R. L. Fernando ◽  
E. J. Pollak ◽  
...  
Keyword(s):  
Genetic Parameters ◽  
Growth Traits ◽  
Heavy Tailed Distributions ◽  
Heavy Tailed ◽  
Estimation Of Genetic Parameters

Evaluation of models for estimation of genetic parameters and maternal effects for early growth traits of Iranian Baluchi sheep

2012 ◽  
Vol 104 (1-3) ◽  
pp. 62-69 ◽  
Author(s):  
M.A. Abbasi ◽  
R. Abdollahi-Arpanahi ◽  
A. Maghsoudi ◽  
R. Vaez Torshizi ◽  
A. Nejati-Javaremi
Keyword(s):  
Maternal Effects ◽  
Genetic Parameters ◽  
Growth Traits ◽  
Early Growth ◽  
Estimation Of Genetic Parameters

scholarly journals Parámetros genéticos y tendencias para características de crecimiento en el ganado criollo sanmartinero en los Llanos Orientales de Colombia

2009 ◽  
Vol 10 (2) ◽  
pp. 196 ◽  
Author(s):  
Rodrigo Martínez ◽  
Guillermo Onofre ◽  
Nelson Polanco
Keyword(s):  
Animal Model ◽  
Birth Weight ◽  
Environmental Effects ◽  
Genetic Parameters ◽  
Growth Traits ◽  
Genetic Change ◽  
Direct Effects ◽  
Creole Cattle ◽  
Maternal Heritability ◽  
Daily Gain

<p>El objetivo de este trabajo fue estimar parámetros genéticos para características de crecimiento y la tendencia de sus valores genéticos en una población de la raza bovina criolla sanmartinero, localizada en el departamento del Meta, Colombia. Se utilizó un modelo animal con efectos directos, maternos y de ambiente permanente y se analizaron las características peso al nacimiento (PN), peso al destete (PD) (ajustado a 240 d.), peso a los 16 meses (P16m), ganancia diaria de peso al destete (GPD) y ganancia diaria de peso desde el destete a los 16 meses (GP16m). Se analizaron 2.812 registros productivos de animales y se encontraron valores de heredabilidad directa moderados, variando desde 0,16 hasta 0,37 para GP16m y GPD respectivamente. Los valores de heredabilidad directa siempre fueron mayores que los de heredabilidad materna y los efectos de ambiente permanente variaron entre 0,024 ± 0,033 para PN hasta 0,067 ± 0,041 para P16m; los valores de repetibilidad fueron superiores para las características de PD (0,41) y GPD (0,37). Los valores genéticos anuales promedio para los efectos directos presentaron en general valores positivos, lo que muestra una tendencia creciente aunque con una alta variación a través de los años; por su parte, los valores genéticos maternos anuales promedio presentaron valores cercanos a cero, aunque en general su tendencia también fue creciente. A pesar de tratarse de un núcleo de conservación, donde no se ha dado selección para estas características, se encontró una tendencia genética que indica un cambio genético positivo.  </p><p> </p><p><strong>Genetic parameters and trends for growth traits in creole cattle sanmartinero in the eastern savannas in Colombia</strong>  </p><p>The aim of this work was to estimate the genetic parameters for growth traits and the tendency of their genetic values in a population of Bovine Creole cattle Sanmartinero, located in Meta, Colombia. Was used an animal model with direct and maternal effects as well as a permanent environmental effects and were analyzed birth weight, weaning weight, (adjusted at 240 d), weight at 16 months, weaning daily gain, and daily gain at 16 months. Were analyzed a total of 2812 productive records from animals and were found direct heritability moderate values, ranging between from 0.16 to 0.3 for GP16m and GP respectively. The direct heritability values always were higher than the maternal heritability values and the permanent environmental effects ranged between 0.024 ± 0.033 for PN until 0.067 ± 0.041 for P16m, but the repeatability values were higher for PD (0.41) and GPD (0.37) traits. With reference to the tendency of average yearly genetic values for direct effects, always displayed positive values and a increase tendency however a high variation between the years were found, conversely to the genetic maternal values than displayed generally values near to zero, but their tendency also was to increase. Is noteworthy than in spite of to be a conservation herd, than do not has been used for selection programs for those traits, was found a genetic tendency that suggest a positive genetic change. </p>

scholarly journals Estimation of genetic parameters for growth related traits at different stages of development in Paralichthys olivaceus (Temminck & Schlegel, 1846)

2016 ◽  
Vol 63 (3) ◽  
Author(s):  
F. Liu ◽  
S. L. Chen ◽  
L. Wang ◽  
Y. P. Zhang ◽  
Y. S. Tian ◽  
...  
Keyword(s):  
Body Weight ◽  
Growth Stage ◽  
Genetic Parameters ◽  
Developmental Stages ◽  
Growth Traits ◽  
Paralichthys Olivaceus ◽  
Correlation Coefficients ◽  
Breeding Value ◽  
Estimated Breeding Value ◽  
Estimation Of Genetic Parameters

Genetic parameters of growth traits at different growing stages of Paralichthys olivaceus (Temminck and Schlegel, 1846) were estimated using 30 families. The estimates of heritability for body weight at four developmental stages viz., 210, 450, 720 and 830 days of age, varied from 0.12 to 0.37. The heritability at 720 days of age was the lowest and that of 450 days was the highest. The maternal effect was 0.08 at 210 days, 0.03 at 450 days and almost zero (8.89 E-8 and 2.40 E-7) at 720 and 830 days. Correlation coefficients of the estimated breeding value (EBV) and phenotypic value (PV) of body weight at different developmental stages were 0.470-0.803, which were highly significant (p<0.01). Correlation of estimated breeding value (EBV) and phenotypic value (PV) was the highest at 210 days of age and the lowest at 720 days. Genetic correlation among the four stages showed large variation (0.339-0.811), which were highly significant except that of 210 and 830 days. The value and accuracy of estimating genetic parameters for growth traits at different stages was different. Therefore, the growth stage should be taken into account when designing a breeding program for growth traits in P. olivaceus.

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