Genetic association between longevity and linear type traits of Holstein cows

Kern, Elisandra Lurdes; Cobuci, Jaime Araújo; Costa, C. N.; McManus, Concepta; Neto, José Braccini

doi:10.1590/0103-9016-2014-0007

Cited by 47 publications

(37 citation statements)

References 21 publications

(26 reference statements)

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“…In their study du Toit et al (2012) reported a similar value of -0.19 for genetic correlations between body depth and number of lactations in Jerseys. Higher genetic correlations between longevity and body depth than in the present study were -0.23 for Czech Holstein by Zavadilova and Stipkova (2012), -0.26 for Holstein by Kern et al (2015), and 0.28 for Austrian Fleckvieh (Fuerst et al 2013). For Aosta Red Pied, Mazza et al (2016) found medium negative genetic correlations between test-day milk, fat and protein yield, and muscularity conformation score in dual-purpose cattle, values of -0.42, -0.37, -0.34, respectively.…”

Section: Resultscontrasting

confidence: 45%

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2022

Czech J. Anim. Sci.

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Novotný L., Frelich J., Beran J., Zavadilová L. (2017): Genetic relationship between type traits, number of lactations initiated, and lifetime milk performance in Czech Fleckvieh cattle. Czech J. Anim. Sci., 62, 501-510.Genetic relationship was analyzed between type traits and longevity measures in dual-purpose cattle. Data from 91 486 Czech Fleckvieh cows first calved between 2003 and 2009 were used. Longevity was defined as the actual number of lactations initiated per cow and also as functional longevity, which incorporated an adjustment to account for variation in voluntary culling based upon milk production. Lifetime performance was defined as cumulative milk production through the 6 th parity. All cows were scored for conformation traits during their first lactation. Genetic correlations between these traits and longevity measures were estimated by bivariate analysis using the DMU variance component program package. Type trait heritabilities ranged from 0.30 to 0.59, while heritabilities for longevity and functional longevity were 0.06 and 0.05, respectively. Heritability of lifetime performance was 0.08. Genetic correlations between type traits and longevity measures ranged from low to intermediate values. Genetic correlations of the measured body size traits to the real and functional longevity ranged from -0.06 to -0.29, for udder traits from -0.02 to 0.33, and for foot and leg traits from -0.03 to 0.17. Genetic correlations between the measured body size traits and lifetime performance ranged from -0.03 to -0.30, for udder traits from 0.05 to 0.47, for foot and leg traits from -0.07 to 0.15. Genetic correlations of composite trait scores for frame, muscularity, feet and legs, and udder with longevity traits ranged from -0.20 to 0.41 and for lifetime performance -0.14 to 0.51. The highest genetic correlations between a type trait and functional longevity were for composite udder score (0.25), feet and legs (0.26), and udder depth (0.33), suggesting that these traits could serve as indicators of functional longevity. We conclude that selection based upon easily and inexpensively measured type traits could improve functional longevity of cows as well as lifetime milk production.

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Section: Resultscontrasting

confidence: 45%

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2022

Czech J. Anim. Sci.

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“…The final score showed a value above the minimum established as ideal, indicating certain harmony between linear-type traits in Brazilian Holsteins as also highlighted by Kern et al (2015).…”

Section: Resultsmentioning

confidence: 69%

“…The higher heritability values were observed for stature, rump width, and teat length traits. These higher heritability values indicate that genetic gains of these type Kern et al (2015) also reported that foot angle and udder texture were the traits that showed the lowest heritability in Holstein cows in Brazil, using a multi-trait model, including production and longevity traits, respectively. The residual correlations were next to nullity (Table 4).…”

Section: Resultsmentioning

confidence: 79%

Genetic associations between reproductive and linear-type traits of Holstein cows in Brazil

et al. 2017

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-This study aimed to estimate heritability, genetic, and residual correlations between reproductive traits such as age at first calving, calving interval, dry period, and first service period and linear type traits measured in Holstein cows born between the years 1990 and 2008 in Brazil. The (co)variance components were estimated by restricted maximum likelihood, using the MTDFREML software. The heritability for reproductive traits and linear-type traits ranged from 0.02 to 0.03 and from 0.07 to 0.40, respectively. Estimates of genetic correlations between reproductive and linear-type traits ranged from -0.23 (top line) to 0.28 (angularity) to age at first calving, from -0.54 (final score) to 0.34 (foot angle) to calving interval, from -0.23 (angularity) to 0.56 (stature) to dry period, and from -0.52 (final score) to 0.36 (height udder) to first service period. Direct selection for any of the reproductive traits implies low genetic gains by virtue of their low heritabilities. Among the linear-type traits, the final score, chest width, top line, angularity, teat length, udder attachment, rear teat placement were highlighted as good auxiliary traits to improve reproductive efficiency of Holstein cows in Brazil. The simultaneous selection for reproductive and linear-type traits can lead a higher genetic progress in the reproductive traits.Key Words: age at first calving, dairy cattle, genetic parameters, reproductive efficiency Revista Brasileira de Zootecnia

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“…Linear type traits have been used extensively to characterize conformation in both dairy [1][2][3] and beef cattle [4,5]. Muscularity linear type traits have previously been documented as moderate to highly heritable traits in beef cattle [5][6][7] and are known to be genetically associated with carcass merit [8,9] and with both animal live weight and price [4].…”

Section: Introductionmentioning

confidence: 99%

Genomic regions associated with muscularity in beef cattle differ in five contrasting cattle breeds

et al. 2020

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Background: Linear type traits, which reflect the muscular characteristics of an animal, could provide insight into how, in some cases, morphologically very different animals can yield the same carcass weight. Such variability may contribute to differences in the overall value of the carcass since primal cuts vary greatly in price; such variability may also hinder successful genome-based association studies. Therefore, the objective of our study was to identify genomic regions that are associated with five muscularity linear type traits and to determine if these significant regions are common across five different breeds. Analyses were carried out using linear mixed models on imputed whole-genome sequence data in each of the five breeds, separately. Then, the results of the within-breed analyses were used to conduct an across-breed meta-analysis per trait. Results:We identified many quantitative trait loci (QTL) that are located across the whole genome and associated with each trait in each breed. The only commonality among the breeds and traits was a large-effect pleiotropic QTL on BTA2 that contained the MSTN gene, which was associated with all traits in the Charolais and Limousin breeds. Other plausible candidate genes were identified for muscularity traits including PDE1A, PPP1R1C and multiple collagen and HOXD genes. In addition, associated (gene ontology) GO terms and KEGG pathways tended to differ between breeds and between traits especially in the numerically smaller populations of Angus, Hereford, and Simmental breeds. Most of the SNPs that were associated with any of the traits were intergenic or intronic SNPs located within regulatory regions of the genome. Conclusions:The commonality between the Charolais and Limousin breeds indicates that the genetic architecture of the muscularity traits may be similar in these breeds due to their similar origins. Conversely, there were vast differences in the QTL associated with muscularity in Angus, Hereford, and Simmental. Knowledge of these differences in genetic architecture between breeds is useful to develop accurate genomic prediction equations that can operate effectively across breeds. Overall, the associated QTL differed according to trait, which suggests that breeding for a morphologically different (e.g. longer and wider versus shorter and smaller) more efficient animal may become possible in the future. © The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article' s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article'

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Genetic association between longevity and linear type traits of Holstein cows

Cited by 47 publications

References 21 publications

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Genetic associations between reproductive and linear-type traits of Holstein cows in Brazil

Genomic regions associated with muscularity in beef cattle differ in five contrasting cattle breeds

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