Sylvie Vanderick
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Single-step genome-wide association analyses for milk urea concentration in Walloon Holstein cows Open
The aims of this study were to conduct a single-step genome-wide association to identify genomic regions associated with milk urea (MU) and to estimate genetic correlations between MU and milk yield (MY), milk composition (calcium content …
Validating genomic prediction for nitrogen efficiency index and its composition traits of Holstein cows in early lactation Open
Nitrogen (N) use efficiency (NUE) is an economically important trait for dairy cows. Recently, we proposed a new N efficiency index (NEI), that simultaneously considers both NUE and N pollution. This study aimed to validate the genomic pre…
Single-step genome-wide association analyses for selected infrared-predicted cheese-making traits in Walloon Holstein cows Open
This study aimed to perform genome-wide association study to identify genomic regions associated with milk production and cheese-making properties (CMP) in Walloon Holstein cows. The studied traits were milk yield, fat percentage, protein …
Single-step genome-wide association for selected milk fatty acids in Dual-Purpose Belgian Blue cows Open
The aim of this study was to estimate genetic parameters and identify genomic regions associated with selected individual and groups of milk fatty acids (FA) predicted by milk mid-infrared spectrometry in Dual-Purpose Belgian Blue cows. Th…
Genome-wide association study and functional annotation analyses for nitrogen efficiency index and its composition traits in dairy cattle Open
The aims of this study were (1) to identify genomic regions associated with a N efficiency index (NEI) and its composition traits and (2) to analyze the functional annotation of identified genomic regions. The NEI included N intake (NINT1)…
Genome-wide association study for selected cheese-making properties in Dual-Purpose Belgian Blue cows Open
This study aimed to estimate genetic parameters and identify genomic region(s) associated with selected cheese-making properties (CMP) in Dual-Purpose Belgian Blue (DPBB) cows. Edited data were 46,301 test-day records of milk yield, fat pe…
Defining a nitrogen efficiency index in Holstein cows and assessing its potential effect on the breeding program of bulls Open
The purposes of this study were (1) to explore the relationship between 3 milk mid-infrared predicted features including nitrogen intake (NINT), milk true protein N (MTPN), and milk urea-N yield (MUNY); (2) to integrate these 3 features in…
Genomic prediction and genetic correlations estimated for milk production and fatty acid traits in Walloon Holstein cattle using random regression models Open
The aims of this study were to: (1) estimate genetic correlation for milk production traits (milk, fat and protein yields and fat and protein contents) and fatty acids (FA: C16:0, C18:1 cis -9, LCFA, SFA, and UFA) over days in milk, (2) in…
Genetic analysis of milk urea concentration and its genetic relationship with selected traits of interest in dairy cows Open
The aim of this study was to estimate genetic parameters of milk urea concentration (MU) and its genetic correlations with milk production traits, longevity, and functional traits in the first 3 parities in dairy cows. The edited data set …
Genetic parameters for milk urea concentration in Dual-Purpose Belgian Blue cattle Open
Milk urea (MU) is a common tool used for evaluation of diet composition and feeding disorders and is related as well to reproductive performances, longevity, health and product quality (e.g. cheese making ability). In addition, the apparen…
Estimation of genetic parameters for predicted nitrogen use efficiency and losses in early lactation of Holstein cows Open
The objective of this study was to estimate genetic parameters of predicted N use efficiency (PNUE) and N losses (PNL) as proxies of N use and loss for Holstein cows. Furthermore, we have assessed approximate genetic correlations between P…
Predicting milk mid-infrared spectra from first-parity Holstein cows using a test-day mixed model with the perspective of herd management Open
The use of test-day models to model milk mid-infrared (MIR) spectra for genetic purposes has already been explored; however, little attention has been given to their use to predict milk MIR spectra for management purposes. The aim of this …
Exploiting opportunities in dairy cattle breeding using mid-infrared spectral data associated to novel traits in the Walloon Region of Belgium Open
peer reviewed
Linking first lactation survival to milk yield and components and lactation persistency in Tunisian Holstein cows Open
Genetic parameters were estimated for first lactation survival defined as a binary trait (alive or dead to second calving) and the curve shape traits of milk yield, fat and protein percentages using information from 25 981 primiparous Tuni…
<i>Corrigendum to</i> : Consequences of genetic selection for environmental impact traits on economically important traits in dairy cows Open
Methane (CH4) emission is an important environmental trait in dairy cows. Breeding aiming to mitigate CH4 emissions require the estimation of genetic correlations with other economically important traits and the prediction of their selecti…
First study into the temporal relationship between metabolic disorders and lameness events over the course of a lactation Open
Lameness in dairy cows is an issue that can vary greatly in severity, and is of concern for both producers and consumers. Metabolic disorders are a major problem in themselves, and, next to this, can cause lameness. Indeed, lameness is an …
Defining and using novel milk composition based heat stress resilience traits in the context of genomic selection for more robust dairy cows in Wallonia Open
Recent research showed the usefulness of using estimated breeding values (EBV) for mid-infrared (MIR) based biomarkers in genetic improvement. A novel class of biomarkers was defined based on modelling responses of milk composition (e.g., …
Milk mid-infrared spectra based biomarkers contributing to genetic improvement for udder health, fertility and longevity Open
Recent research showed the usefulness of using estimated breeding values (EBV) for midinfrared (MIR) based biomarkers in genetic improvement. Similarly, research has also shown that genetic variation is contained in the absorbance traits a…
Bayesian single-step genomic evaluations combining local and foreign information in Walloon Holsteins Open
Most dairy cattle populations found in different countries around the world are small to medium sized and use many artificial insemination bulls imported from different foreign countries. The Walloon population in the southern part of Belg…
Consequences of genetic selection for environmental impact traits on economically important traits in dairy cows Open
Methane (CH4) emission is an important environmental trait in dairy cows. Breeding aiming to mitigate CH4 emissions require the estimation of genetic correlations with other economically important traits and the prediction of their selecti…
Capitalizing on fine milk composition for breeding and management of dairy cows Open
The challenge of managing and breeding dairy cows is permanently adapting to changing production circumstances under socio-economic constraints. If managing and breeding address different timeframes of action, both need relevant phenotypes…