ArticleAnimals : an open access journal from MDPI2021
Random Regression Analysis of Calving Interval of Japanese Black Cows.
Article in Animals : an open access journal from MDPI, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Fertility Traits in Japanese Black Cows in Farms Classified by Calving Intervals Using Epidemiological Methods.Reproduction in domestic animals = Zuchthygiene · 2025Article
- Comparing pedigree and genomic inbreeding coefficients, and inbreeding depression of reproductive traits in Japanese Black cattle.BMC genomics · 2023Article
- Single-Step Genomic Prediction of Superovulatory Response Traits in Japanese Black Donor Cows.Biology · 2023Article
- Comparing Methods to Select Candidates for Re-Genotyping to Impute Higher-Density Genotype Data in a Japanese Black Cattle Population: A Case Study.Animals : an open access journal from MDPI · 2023Article
- Genes and models for estimating genetic parameters for heat tolerance in dairy cattle.Frontiers in genetics · 2023Review
- Comparison of Random Regression Models with Different Order Legendre Polynomials for Genetic Parameter Estimation on Race Completion Speed of Arabian Horses.Animals : an open access journal from MDPI · 2022Article
- A Bayesian random regression method using mixture priors for genome-enabled analysis of time-series high-throughput phenotyping data.The plant genome · 2022Article
- Estimation of genetic parameters for superovulatory response traits in Japanese Black cows.Journal of animal science · 2021Article
- Genome-Wide Association Study on Reproduction-Related Body-Shape Traits of Chinese Holstein Cows.Animals : an open access journal from MDPI · 2021Article
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2 authors.
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Abstract
We estimated genetic parameters for the calving interval of Japanese Black cows using a random regression model and a repeatability model. We analyzed 92,019 calving interval records of 36,178 cows. Pedigree data covered 390,263 individuals. Age of cow at previous calving for each record ranged from 18 to 120 months. We used up to the second-order Legendre polynomials based on age at previous calving as sub-models for random regression analysis, and assumed a constant error variance across ages. Estimated heritability was 0.12 to 0.20 with the random regression model and 0.17 with the repeatability model. With the random regression model, the estimated genetic correlation between ages was ≥0.87, and those between 24 and 36 months, 24 and 84 months, and 36 and 84 months were 0.99, 0.95, and 0.97, respectively. Spearman's rank correlation between breeding values of 36,178 cows with their own records estimated by the random regression model with those estimated using the repeatability model was ≥0.97, and the rank correlation was ≥0.94 for 314 sires of these cows. These results support the validity of fitting a repeatability model to the records of the calving interval of Japanese Black cows for evaluation of breeding values.
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