Short communication (Scientific journals)
Investigation of the temporal relationships between milk mid-infrared predicted biomarkers and lameness events in later lactation
Mineur, Axelle; Hammami, Hedi; Grelet, Clément et al.
2020In Journal of Dairy Science, 103 (5), p. 4475-4482
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Keywords :
mid-infrared spectrometry; Fisher transformation; polynomic smoothing; metabolic disorder
Abstract :
[en] This study reports on the exploration of temporal relationships between milk mid-infrared predicted biomarkers and lameness events. 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 often associated with lameness. However, lameness can arise weeks or even months after the metabolic disorder, making the detection of causality difficult. We already use mid-infrared technology to predict major milk components, such as fat or protein, during routine milk recording and for milk payment. It was recently shown that this technology can also be used to predict novel biomarkers linked to metabolic disorders in cows, such as oleic acid (18:1 cis-9), β-hydroxybutyrate, acetone, and citrate in milk. We used these novel biomarkers as proxies for metabolic issues. Other studies have explored the possibility of using mid-infrared spectra to predict metabolic diseases and found it (potentially) usable for indicating classes of metabolic problems. We wanted to explore the possible relationship between mid-infrared-based metabolites and lameness over the course of lactation. In total, data were recorded from 6,292 cows on 161 farms in Austria. Lameness data were recorded between March 2014 and March 2015 and consisted of 37,555 records. Mid-infrared data were recorded between July and December 2014 and consisted of 9,152 records. Our approach consisted of fitting preadjustments to the data using fixed effects, computing pair-wise correlations, and finally applying polynomial smoothing of the correlations for a given biomarker at a certain month in lactation and the lameness events scored on severity scale from sound or non-lame (lameness score of 1) to severely lame (lameness score of 5) throughout the lactation. The final correlations between biomarkers and lameness scores were significant, but not high. However, for the results of the present study, we should not look at the correlations in terms of absolute values, but rather as indicators of a relationship through time. When doing so, we can see that metabolic problems occurring in mo 1 and 3 seem more linked to longterm effects on hoof and leg health than those in mo 2. However, the quantity (only 1 pair-wise correlation exceeded 1,000 observations) and the quality (due to limited data, no separation according to more metabolic-related diseases could be done) of the data should be improved.
Research center :
IPAN - Gembloux Agro-Bio Tech - Université de Liège
Disciplines :
Animal production & animal husbandry
Author, co-author :
Mineur, Axelle ;  Université de Liège - ULiège > Département GxABT > Ingénierie des productions animales et nutrition
Hammami, Hedi ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions animales et nutrition
Grelet, Clément 
Egger-Danner, Christa
Sölkner, Johann
Gengler, Nicolas  ;  Université de Liège - ULiège > Département GxABT > Ingénierie des productions animales et nutrition
Language :
English
Title :
Investigation of the temporal relationships between milk mid-infrared predicted biomarkers and lameness events in later lactation
Alternative titles :
[fr] Etude des relations temporelles entre les biomarqueurs du lait prédit par moyen-infrarouge et les événements de boiterie futures
Publication date :
May 2020
Journal title :
Journal of Dairy Science
ISSN :
0022-0302
eISSN :
1525-3198
Publisher :
American Dairy Science Association, Champaign - IL, United States
Volume :
103
Issue :
5
Pages :
4475-4482
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 11 February 2020

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