Genetic and environmental relationships between body condition score and milk production traits in Canadian Holsteins

Loker, S.; Bastin, Catherine; Miglior, F.; Sewalem, A.; Schaeffer, L.R.; Jamrozik, J.; Ali, Aadil; Osborne, V.R.

doi:10.3168/jds.2011-4497

Cited by 57 publications

(81 citation statements)

References 35 publications

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“…As in the studies by Negussie et al (2008b), Bastin et al (2010a), and Loker et al (2012), within-animal environmental covariance among traits was modeled by the PE effect. This effect allowed for a cow-specific, nongenetic link between BCS and health traits.…”

Section: Body Condition Score and Healthmentioning

confidence: 99%

“…Body condition score meets all the criteria to be considered a useful indicator trait for health and fertility status in dairy cattle. Several studies have found that BCS has a moderate heritability, ranging between 0.20 and 0.51, with the majority of studies estimating heritability between 0.20 and 0.30 [Jones et al, 1999;Veerkamp et al, 2001;Berry et al, 2003b;Loker et al, 2011Loker et al, , 2012; S. Loker, C. Bastin, F. Miglior, A. Sewalem, L. R. Schaeffer, J. Jamrozik, V. Osborne (Centre for Nutrition Modelling, University of Guelph, Guelph, ON, Canada), and A. Ali (Department of Mathematics and Statistics, University of Guelph, Guelph, ON, Canada), unpublished data], which indicates that the trait can be recorded consistently with less environmental influence relative to traits with low heritability. Body condition score possesses ample genetic variation throughout lactation to allow for successful selection Berry et al, 2003b;Mao et al, 2004;Loker et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Recent Canadian research on BCS (Bastin et al, 2010a,b;Neuenschwander, 2010;Loker et al, 2011Loker et al, , 2012Neuenschwander et al, 2012;) used data provided by Valacta, a Canadian milk recording agency based in Sainte-Anne-de-Bellevue, Québec, Canada. The research supported the development of a genetic evaluation of BCS in Canada by using a random regression animal model, which would allow each animal to be ranked according to a unique BCS lactation curve.…”

Section: Introductionmentioning

confidence: 99%

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Relationship between body condition score and health traits in first-lactation Canadian Holsteins

Loker

Miglior

Koeck

et al. 2012

Journal of Dairy Science

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The objective of this research was to estimate daily genetic correlations between longitudinal body condition score (BCS) and health traits by using a random regression animal model in first-lactation Holsteins. The use of indicator traits may increase the rate of genetic progress for functional traits relative to direct selection for functional traits. Indicator traits of interest are those that are easier to record, can be measured early in life, and are strongly genetically correlated with the functional trait of interest. Several BCS records were available per cow, and only 1 record per health trait (1 = affected; 0 = not affected) was permitted per cow over the lactation. Two bivariate analyses were performed, the first between BCS and mastitis and the second between BCS and metabolic disease (displaced abomasum, milk fever, and ketosis). For the first analysis, 217 complete herds were analyzed, which included 28,394 BCS records for 10,715 cows and 6,816 mastitis records for 6,816 cows. For the second analysis, 350 complete herds were analyzed, which included 42,167 BCS records for 16,534 cows and 13,455 metabolic disease records for 13,455 cows. Estimation of variance components by a Bayesian approach via Gibbs sampling was performed using 400,000 samples after a burn-in of 150,000 samples. The average daily heritability (posterior standard deviation) of BCS was 0.260 (0.026) and the heritabilities of mastitis and metabolic disease were 0.020 (0.007) and 0.041 (0.012), respectively. Heritability estimates were similar to literature values. The average daily genetic correlation between BCS and mastitis was −0.730 (0.110). Cows with a low BCS during the lactation are more susceptible to mastitis, and mastitic cows are likely to have low BCS. Daily estimates of genetic correlations between BCS and mastitis were moderate to strong throughout the lactation, becoming stronger as the lactation progressed. The average daily genetic correlation between BCS and metabolic disease was −0.438 (0.125), and was consistent throughout the lactation. A lower BCS during the lactation is genetically associated with the occurrence of mastitis and metabolic disease.

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Section: Body Condition Score and Healthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Relationship between body condition score and health traits in first-lactation Canadian Holsteins

Loker

Miglior

Koeck

et al. 2012

Journal of Dairy Science

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“…Dicha proporción, posiblemente, pudo haber sido mayor si las vacas se hubieran monitoreado en los últimos días previos al parto. Los resultados obtenidos en el presente estudio son similares a los observados por otros; donde las relaciones entre CC y PL fueron no significativas (Ruegg y Milton, 1995;Berry et al 2007); o débiles (Locker et al 2012;Green et al 2014). Por el contrario, otros estudios demostraron relaciones mayores y positivas entre CC y PL Sheehy et al 2017) cuando se consideraron vacas lecheras en la transición del parto a la lactancia.…”

Section: Resultsunclassified

Relaciones entre calcio, ácidos grasos no esterificados, e insulina sanguínea en preparto y leche bovina perdida en el inicio de la lactancia

Ordaz

Pérez

Martínez

et al. 2017

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Relaciones entre calcio, ácidos grasos no esterificados, e insulina sanguínea en preparto y leche bovina perdida en el inicio de la lactancia Calcium, non-esterified fatty acids, and insulin in blood in prepartum and their relationships with milk yield losses at early lactation Resumen IntroducciónEl objetivo fue determinar la relación entre las concentraciones séricas de calcio (Ca 2+ ), ácidos grasos no esterificados (AGNE) e insulina preparto con pérdidas en la producción de leche (PL) en el inicio de la lactancia. MétodoDoscientas cuarenta y tres vacas Holstein-Friesian (780 ± 36 kg PV; con más de dos lactancias) fueron muestreadas por punción coccígea varias veces antes, durante y después del parto. Para cada muestreo y cada metabolito, las concentraciones séricas se estratificaron con umbrales y se relacionaron con la PL. ResultadosCuando los niveles de Ca 2+ fueron bajos 10 días antes del parto y se relacionaron con la PL a los ConclusiónEn conclusión, niveles bajos de calcio, AGNE alto e insulina baja en sangre, obtenidos 10 días antes de parto fueron asociados con pérdidas en producción de leche en los días 10 y 20 después del parto. También se observó que los niveles bajos de calcio podrían causar mayores pérdidas de leche que los niveles altos de ácidos grasos no esterificados y las concentraciones bajas de insulina preparto. Abstract Introduction

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“…Hence, cows that produced less milk and weaned lighter calves with poor conformation and later finishing accumulated greater body reserves and, consequently, exhibited better body conditions (Vieira et al, 2005). In a dairy cattle study, Loker et al (2012) found an unfavourable genetic correlation between BCS and milk production that increased as the lactation period progressed: the higher the milk production, the worse the body condition of the cow. Conversely, Lake et al (2005) found no significant effect of cow BCS on the calf weaning weight.…”

Section: Discussionmentioning

confidence: 99%

Body condition score of Nellore beef cows: a heritable measure to improve the selection of reproductive and maternal traits

Fernandes

Neves

Carvalheiro

et al. 2015

Animal

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Despite the economic importance of beef cattle production in Brazil, female reproductive performance, which is strongly associated with production efficiency, is not included in the selection index of most breeding programmes due to low heritability and difficulty in measure. The body condition score (BCS) could be used as an indicator of these traits. However, so far little is known about the feasibility of using BCS as a selection tool for reproductive performance in beef cattle. In this study, we investigated the sources of variation in the BCS of Nellore beef cows, quantified its association with reproductive and maternal traits and estimated its heritability. BCS was analysed using a logistic model that included the following effects: contemporary group at weaning, cow weight and hip height, calving order, reconception together with the weight and scores of conformation and early finishing assigned to calves at weaning. In the genetic analysis, variance components of BCS were estimated through Bayesian inference by fitting an animal model that also included the aforementioned effects. The results showed that BCS was significantly associated with all of the reproductive and maternal variables analysed. The estimated posterior mean of heritability of BCS was 0.24 (highest posterior density interval at 95%: 0.093 to 0.385), indicating an involvement of additive gene action in its determination. The present findings show that BCS can be used as a selection criterion for Nellore females.

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Genetic and environmental relationships between body condition score and milk production traits in Canadian Holsteins

Cited by 57 publications

References 35 publications

Relationship between body condition score and health traits in first-lactation Canadian Holsteins

Relationship between body condition score and health traits in first-lactation Canadian Holsteins

Relaciones entre calcio, ácidos grasos no esterificados, e insulina sanguínea en preparto y leche bovina perdida en el inicio de la lactancia

Body condition score of Nellore beef cows: a heritable measure to improve the selection of reproductive and maternal traits

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