Estimates of Parameters for Genetic Relationship between Reproductive Performances and Body Condition Score of Hanwoo Cows

Choi, Seong Bok; Lee, J. W.; Choy, Yun Ho; Na, K. J.; Kim, N. S.

doi:10.5713/ajas.2005.909

Cited by 7 publications

(15 citation statements)

References 6 publications

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“…The observed direct and maternal heritability estimates for BW of 0.22 ± 0.02 ( Table 3 ) and 0.12 ± 0.01, respectively, were comparable to 0.20 and 0.09 obtained by Choi et al [ 15 ] in Hanwoo calves using a model similar to this study, except only for a non-zero covariance assumption between the additive genetic and maternal effects. Contrastingly, numerous researchers including Kars et al [ 16 ] (0.41, Nguni cattle stud), Mujibi et al [ 17 ] (0.46, Charolais), Martínez-González et al [ 18 ] (0.59, Nellore), and Tawah et al [ 19 ] (0.39, Gudali; 0.65, Wakwa Cattle) reported higher direct heritability estimates compared with our findings.…”

Section: Discussionsupporting

confidence: 89%

Genetic Parameters of Birth Weight and Weaning Weight and Their Relationship with Gestation Length and Age at First Calving in Hanwoo (Bos taurus coreanae)

Lopez

Santiago

Seo

et al. 2020

Animals

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Hanwoo is one of the most economically important animal species in Korea due to its significant contribution to nutrition. However, the current selection index only focuses to improve carcass traits of Hanwoo. Thus, this study aimed to estimate the genetic parameters of birth weight (BW) and weaning weight (WW) and their genetic and phenotypic relationship to the age at first calving (AFC) and gestation length (GL) of Hanwoo. The genetic parameters for birth weight (BW) and weaning weight (WW) were estimated using the data obtained from 52,173 and 35,800 Hanwoo calves born from February 1998 to March 2017, respectively. Further, these data were used to determine their genetic and phenotypic correlation to age at first calving (AFC) and gestation length (GL). The heritability estimates of BW and WW and correlation coefficients were obtained using the average information restricted maximum likelihood (AIREML) procedure, fit in single and two-trait linear animal models. The estimated direct heritability for BW and WW was moderate (0.22 ± 0.02) and high (0.51 ± 0.03), respectively, while the maternal heritability for both traits was 0.12 ± 0.01 and 0.17 ± 0.01, respectively. The genetic correlation of BW and reproductive traits (AFC and GL) showed a moderate and high positive correlation coefficient of 0.33 ± 0.06 and 0.53 ± 0.02, respectively, while close to zero and low positive phenotypic correlations of 0.06 ± 0.01 and 0.21 ± 0.06 were also observed between the correlated traits, respectively. For the correlation analysis between WW and AFC, both the genetic and phenotypic correlation showed close to zero values of 0.04 ± 0.06 and −0.01 ± 0.01, respectively. Meanwhile, the genetic and phenotypic correlation between WW and GL showed low and negative correlations of −0.09 ± 0.06 and −0.09 ± 0.01, respectively. These obtained estimated variances for BW and WW and their corresponding genetic and phenotypic correlation to AFC and GL can be used as information for genetic improvement and subsequent economic improvement of Hanwoo farming.

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Section: Discussionsupporting

confidence: 89%

Genetic Parameters of Birth Weight and Weaning Weight and Their Relationship with Gestation Length and Age at First Calving in Hanwoo (Bos taurus coreanae)

Lopez

Santiago

Seo

et al. 2020

Animals

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“…(2004) have reported 0.31 for Chinese Simmental cattle at 3 months of age, which is slightly higher than the estimate in the present study at 4‐mo. In our study, the estimated maternal heritabilities for body weight at 0‐mo and 4‐mo (0.33 ± 0.07 and 0.33 ± 0.06, respectively) were higher than the estimate of 0.09 and 0.14 at birth and 0.06 and 0.05 at weaning reported by Choi et al . (2005) and Intaratham et al .…”

Section: Resultscontrasting

confidence: 97%

“…In our study, the estimated maternal heritabilities for body weight at 0-mo and 4-mo (0.33 Ϯ 0.07 and 0.33 Ϯ 0.06, respectively) were higher than the estimate of 0.09 and 0.14 at birth and 0.06 and 0.05 at weaning reported by Choi et al (2005) and Intaratham et al (2008), respectively, indicating that milking ability of cows and suckling performance of calves are also responsible at different ages for these traits. The estimates of direct ¥ maternal genetic correlations were close to zero for most of the traits, negative and high for CD (-0.86 Ϯ 0.13) and PBW (-0.77 Ϯ 0.12) at 0-mo and negative and moderate for RL (-0.48 Ϯ 0.26) at 4-mo.…”

Section: Resultscontrasting

confidence: 91%

“…The estimated direct and maternal heritabilities for BW were moderate at both ages. The estimated direct heritability for body weight at 4-mo (0.24) was much higher than the estimate of 0.14 reported by Choi et al (2000) and 0.08 by Choi et al (2005) for Korean cattle at weaning. The direct heritabilities of body weight with the use of bivariate analysis for Northeastern Thai indigenous cattle at birth and weaning have been reported as 0.40 Ϯ 0.08 and 0.27 Ϯ 0.06, respectively (Intaratham et al 2008).…”

Section: Resultscontrasting

confidence: 63%

“…The estimated direct heritability for body weight at 4‐mo (0.24) was much higher than the estimate of 0.14 reported by Choi et al . (2000) and 0.08 by Choi et al . (2005) for Korean cattle at weaning.…”

Section: Resultsmentioning

confidence: 90%

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Genetic variability of maternal effect on body measurements and its intra‐ and inter‐genetic relationship with direct effect in Japanese Black calves

Munim

Oikawa

Ibi

et al. 2011

Animal Science Journal

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This study was conducted to evaluate the importance of maternal effect on body measurement traits at an early stage of growth, and to estimate the genetic relationships between direct and maternal effects and among body measurement traits at 0 month (0-mo) and 4 months (4-mo) of age in a population of Japanese Black calves. Body measurements and body weight of 889 Japanese Black calves were estimated with the use of an animal model by the Residual Maximum Likelihood procedure. Direct heritabilities were low to moderate, ranging between 0.17 ± 0.09 and 0.48 ± 0.13 at 0-mo, and slightly lower, ranging between 0.15 ± 0.07 and 0.33 ± 0.13 at 4-mo. Estimated maternal heritabilities were low to moderate, ranging between 0.08 ± 0.07 and 0.33 ± 0.07 at 0-mo and 0.13 ± 0.06 to 0.33 ± 0.06 at 4-mo. The direct genetic correlations between 0-mo and 4-mo were moderate to highly positive, ranging from 0.53 ± 0.23 to 0.96 ± 0.09. The estimated direct genetic correlation of chest width with other width traits was low and positive at both ages, whereas with hip width it was high and positive (0.80 ± 0.09) at 0-mo, suggesting that simultaneous improvement of body width of the front and back parts is possible. Maternal genetic effects were relatively independent of direct genetic effects for body measurement traits and can be considered in genetic evaluation.

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Evaluation of animal models to explore the influence of maternal genetic and maternal permanent environment effect on reproductive performance of Jersey crossbred cattle

Kumar

Mandal

2021

Reprod Domestic Animals

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The present study was conducted on 1,002 reproductive records of 430 Jersey crossbred cattle, descended from 57 sires and 198 dams, maintained at the Eastern Regional Station of ICAR‐National Dairy Research Institute, Kalyani, Nadia, West Bengal, India to investigate the influence of direct genetic, maternal genetic and maternal permanent environmental effect on three most important reproductive traits viz., number of service per conception (NSPC), days open (DO) and calving interval (CI) of Jersey crossbred cattle. Six single‐trait animal models (including or excluding maternal genetic or permanent environmental effects) were fitted to analyse these traits, and the best model was chosen after testing the significant increase in the log‐likelihood values when additional parameters were added in the model. Direct heritability estimates for NSPC, DO and CI from the best model were 0.10, 0.14 and 0.20, respectively. The maternal permanent environmental (c2) effects on reproductive traits accounted for almost negligible fraction of the total phenotypic variance in this study. The maternal genetic effects (m2) also contributed very little (0%–3%) to the total phenotypic variance except for CI where it was important and accounted for 20% of phenotypic variance. A significantly large negative genetic correlation was observed between direct and maternal genetic effects for all traits, suggesting the presence of antagonistic relationship between dam's direct additive component and daughter's additive genetic component. Results suggest that both direct and maternal effects were important only for CI but not for other traits. Therefore, both direct additive effects and maternal genetic effect need to be considered for improving this trait by selection.

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Estimates of Parameters for Genetic Relationship between Reproductive Performances and Body Condition Score of Hanwoo Cows

Cited by 7 publications

References 6 publications

Genetic Parameters of Birth Weight and Weaning Weight and Their Relationship with Gestation Length and Age at First Calving in Hanwoo (Bos taurus coreanae)

Genetic Parameters of Birth Weight and Weaning Weight and Their Relationship with Gestation Length and Age at First Calving in Hanwoo (Bos taurus coreanae)

Genetic variability of maternal effect on body measurements and its intra‐ and inter‐genetic relationship with direct effect in Japanese Black calves

Evaluation of animal models to explore the influence of maternal genetic and maternal permanent environment effect on reproductive performance of Jersey crossbred cattle

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