Genetic parameters of lifetime performance traits in Holstein cows

Chauhan, V. P. S.; Hayes, J. F.; Jairath, L.K.

doi:10.1111/j.1439-0388.1993.tb00724.x

Cited by 7 publications

(7 citation statements)

References 10 publications

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“…within the range (0.01 ∼ 0.10, Sasaki, 2013) of a previous study in United States and Canadian Holsteins for herd life, milking life, total productive life, and the number of lactation. In the present study, high genetic correlations (0.994 ∼ 0.998) among herd life, total productive life and milking life were found, which was consistent with the previous findings that the genetic correlations among full lifespan traits are generally higher than 0.90 (Klassen et al, 1992;Short and Lawlor, 1992;Chauhan et al, 1993;Jairath et al, 1994). For example, there were a high genetic correlation (0.986) between milking life and total productive life in Dutch Holsteins (Vollema and Groen, 1996) and high genetic correlations (0.98 ∼ 1.00) among milking life, total productive life and number of lactation in Canadian Holsteins (Jairath et al, 1994).…”

Section: Heritabilities and Correlationssupporting

confidence: 93%

Genetic Parameters and Genome-Wide Association Studies of Eight Longevity Traits Representing Either Full or Partial Lifespan in Chinese Holsteins

Zhang

Wang

et al. 2021

Front. Genet.

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Due to the complexity of longevity trait in dairy cattle, two groups of trait definitions are widely used to measure longevity, either covering the full lifespan or representing only a part of it to achieve an early selection. Usually, only one group of longevity definition is used in breeding program for one population, and genetic studies on the comparisons of two groups of trait definitions are scarce. Based on the data of eight traits well representing the both groups of trait definitions, the current study investigated genetic parameters and genetic architectures of longevity in Holsteins. Heritabilities and correlations of eight longevity traits were estimated using single-trait and multi-trait animal models, with the data from 103,479 cows. Among the cows with phenotypes, 2,630 cows were genotyped with the 150K-SNP panel. A single-trait fixed and random Circuitous Probability Unification model was performed to detect candidate genes for eight longevity traits. Generally, all eight longevity traits had low heritabilities, ranging from 0.038 for total productive life and herd life to 0.090 for days from the first calving to the end of first lactation or culling. High genetic correlations were observed among the traits within the same definition group: from 0.946 to 0.997 for three traits reflecting full lifespan and from 0.666 to 0.997 for five traits reflecting partial productive life. Genetic correlations between two groups of traits ranged from 0.648 to 0.963, and increased gradually with the extension of lactations number regarding the partial productive life traits. A total of 55 SNPs located on 25 chromosomes were found genome-wide significantly associated with longevity, in which 12 SNPs were associated with more than one trait, even across traits of different definition groups. This is the first study to investigate the genetic architecture of longevity representing both full and the partial lifespan simultaneously, which will assist the selection of an appropriate trait definition for genetic improvement of longevity. Because of high genetic correlations with the full lifespan traits and higher heritability, the partial productive life trait measured as the days from the first calving to the end of the third lactation or culling could be a good alternative for early selection on longevity. The candidate genes identified by this study, such as RPRM, GRIA3, GTF2H5, CA5A, CACNA2D1, FGF10, and DNAJA3, could be used to pinpoint causative mutations for longevity and further benefit the genomic improvement of longevity in dairy cattle.

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Section: Heritabilities and Correlationssupporting

confidence: 93%

Genetic Parameters and Genome-Wide Association Studies of Eight Longevity Traits Representing Either Full or Partial Lifespan in Chinese Holsteins

Zhang

Wang

et al. 2021

Front. Genet.

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“…A subset of the same data as used by C hauhan et al (1993) was used for this study (Table 1). Data were from Holstein cows disposed from herds for all but export or dairy purposes, and having first lactation initiated in 1979 to 1987.…”

Section: Methodsmentioning

confidence: 99%

“…Data of proven sires were also included to improve connectedness, however, proven sires were fitted as fixed effects. The model and the methodology were the same as described by C hauhan et al (1993).…”

Section: Methodsmentioning

confidence: 99%

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Relationships of first lactation yields with lifetime performance traits in Holstein cows

Chauhan

Hayes

1993

J Animal Breeding Genetics

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Genetic and phenotypic correlations between the first lactation and lifetime yields of milk, fat and protein, herdlife, productive life and number of lactations initiated in the herd were estimated from records of 24,231 progeny of 234 young and 119 proven Holstein sires in 1791 herds using a multivariate REML technique to fit a sire model with relationships among young sires. Proven sires were fitted as fixed effects. Genetic correlations between first lactation and lifetime yields were highest for milk (0.666) followed by fat (0.660) and protein (0.512). Genetic as well as phenotypic correlations of herdlife, productive life and number of lactations were higher with first lactation milk yield than with first lactation fat and protein yields. Direct selection for higher lifetime yields would not be effective because of low heritabilities. However the high, positive genetic correlations of lifetime yields of milk and fat with first lactation yields suggested that first lactation yields might be used for indirect selection for higher lifetime yields. ZUSAMMENFASSUNG: Beziehung zwischen Erstlaktations- und Lebensleistung bei Holstein-Kühen Zwischen Erstlaktations- und Lebensleistung für Milch, Fett, Protein, Verbleibedauer, produktiver Lebensdauer und Zahl von Laktationen in der Herde wurden von 24.291 Töchtern, 234 Jung- und 119 geprüften Holsteintieren in 1.791 Herden genetische Beziehungen geschätzt, wobei eine multivariate REML-Technik zur Analyse eines Stiermodells mit Verwandtschaft zwischen jungen Stieren angewendet worden ist. Die geprüften Stiere wurden als fixe Effekte angesehen. Genetische Korrelationen zwischen Erstlaktation und Lebensleistung war am höchsten für Milch (0,666), gefolgt von Fett (0,660) und Protein (0,512). Genetische und phänotypische Korrelationen mit Verbleibedauer, produktiver Lebensdauer und Zahl der Laktationen waren ebenfalls für Erstlaktations-milchmenge höher als bei Fett und Protein. Direkte Selektion auf höhere Lebensleistung würde wegen der niedrigen Heritabilität nicht wirksam sein. Allerdings könnten die hohen positiven genetischen Korrelationen des Merkmals mit Erstlaktationsleistungen diese als geeignetes indirektes Selektionskriterium für höhere Lebensleistung anzeigen.

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“…Otros autores han estimado correlaciones fenotípicas entre características de longevidad, mayores a las obtenidas en este estudio(Chauhan, Hayes & Jairath, 1993;Vollema & Groen, 1996). Las correlaciones genéticas y fenotípicas en las características de longevidad y PL estimadas, pueden ser manejadas para predecir la respuesta directa e indirecta a la selección, pudiendo desarrollar índices de selección para varias características, evaluando la importancia económica relativa para valorar su implementación en programas de mejora.En vacas de raza Holstein la mayor correlación genética se reportó entre PL y el PTAF (0.934)(Chauhan, Hayes & Jairath, 1993), siendo mayor al de la presente investigación, realizado en vacas Jersey. Las correlaciones genéticas estimadas entre algunas características de PL y producción de leche, han sido mayores en el presente trabajo en comparación con otros autores(Short & Lawlor 1992;Strandberg & Sölkner 1996) Corrales et al (2012).…”

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Estudio de las correlaciones entre valores genéticos de producción – reproducción y tipo de los toros Jersey en Ecuador

et al. 2019

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En la provincia de Chimborazo se analizaron las correlaciones entre valores genéticos de Producción, Tipo y Reproducción en toros de la raza Jersey, mediante el uso de una base de datos correspondiente a dichos toros disponible en EEUU y comercializados en Ecuador. Se seleccionaron 25 toros. Los datos fueron analizados mediante estadística descriptiva y a su vez se realizó un análisis de correlación lineal por el método de Pearson, utilizando el software SPSS versión Statistic 19. Para la correlación entre parámetros productivos y reproductivos, el 65% de las características no se correlacionan, es decir, son independientes; mientras que el parámetro tasa de preñez de las hijas (DPR) se correlaciona con la vida productiva (PL) y habitabilidad (LIV). Además, la tasa de concepción de las hijas (HCR) se correlaciona con la habilidad predicha de trasmisión de proteína (PTAP) y la tasa de concepción de la vaca (CCR) con la LIV. Con respecto a las correlaciones entre parámetros productivos y de tipo, se indica que el 88% de las características son independientes; mientras que hay correlación directa entre el temperamento lechero (DF) con la PTAP y la habilidad predicha de trasmisión de grasa (PTAF). Para la correlación entre parámetros reproductivos y de tipo, el 72% de las características son independientes, mientras que los que progresan de manera directa son: PTAT con la tasa de concepción del toro (SCR) y el índice ubre Jersey (JUI) con SCR, por lo que se recomienda a los productores, seleccionar los sementales tomando en consideración las características que se correlacionan, ya que influyen en el desarrollo del Hato.

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Genetic parameters of lifetime performance traits in Holstein cows

Cited by 7 publications

References 10 publications

Genetic Parameters and Genome-Wide Association Studies of Eight Longevity Traits Representing Either Full or Partial Lifespan in Chinese Holsteins

Genetic Parameters and Genome-Wide Association Studies of Eight Longevity Traits Representing Either Full or Partial Lifespan in Chinese Holsteins

Relationships of first lactation yields with lifetime performance traits in Holstein cows

Estudio de las correlaciones entre valores genéticos de producción – reproducción y tipo de los toros Jersey en Ecuador

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