Different reticuloruminal pH metrics of high-yielding dairy cattle during the transition period in relation to metabolic health, activity, and feed intake
ABSTRACT: The measurement of pH in the reticulorumen in combination with a time–pH threshold has been widely applied in research to diagnose subacute ruminal acidosis. However, other pH metrics also have biological value. In this study, 44 animals were monitored during the transition period using re...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-08-01
|
| Series: | Journal of Dairy Science |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0022030222003526 |
| _version_ | 1818512243706298368 |
|---|---|
| author | S. Heirbaut D. Børge Jensen X.P. Jing B. Stefańska P. Lutakome L. Vandaele V. Fievez |
| author_facet | S. Heirbaut D. Børge Jensen X.P. Jing B. Stefańska P. Lutakome L. Vandaele V. Fievez |
| author_sort | S. Heirbaut |
| collection | DOAJ |
| description | ABSTRACT: The measurement of pH in the reticulorumen in combination with a time–pH threshold has been widely applied in research to diagnose subacute ruminal acidosis. However, other pH metrics also have biological value. In this study, 44 animals were monitored during the transition period using reticuloruminal pH boluses. Traditional and more complex pH characteristics were calculated to characterize the reticuloruminal pH profile: time pH <6, slope of a logistic cumulative pH curve (β0), and deviations [squared error (SqEr)] from pH predictions based on a harmonic static model. In this study, we aimed to examine the associations between those pH metrics and metabolic health parameters, feed intake, and activity. Finally, to describe the reticuloruminal pH dynamically, we also constructed a dynamic linear model. The results of this model were studied in relation to feed intake. All pH parameters were mutually correlated (particularly β0 and SqEr; mean Pearson correlation of −0.52). pH patterns, rather than time pH <6, were associated with metabolic health and feed intake: high variation in daily pH (β0 parameter) was reflected in higher blood concentrations of nonesterified fatty acids. Moreover, pH deviations of the harmonic model were negatively associated with feed intake and rumination behavior. This research confirms the biological importance of pH metrics focusing on pH variation and pH deviations and provides deeper insight into its associations with metabolic health status, feed intake, and activity during early lactation. |
| first_indexed | 2024-12-10T23:44:08Z |
| format | Article |
| id | doaj.art-7dd7e2d92893435a8b426fcecb25e859 |
| institution | Directory Open Access Journal |
| issn | 0022-0302 |
| language | English |
| last_indexed | 2024-12-10T23:44:08Z |
| publishDate | 2022-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Dairy Science |
| spelling | doaj.art-7dd7e2d92893435a8b426fcecb25e8592022-12-22T01:28:58ZengElsevierJournal of Dairy Science0022-03022022-08-01105868806894Different reticuloruminal pH metrics of high-yielding dairy cattle during the transition period in relation to metabolic health, activity, and feed intakeS. Heirbaut0D. Børge Jensen1X.P. Jing2B. Stefańska3P. Lutakome4L. Vandaele5V. Fievez6Laboratory for Animal Nutrition and Animal Product Quality, Department of Animal Sciences and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, 9000 Gent, BelgiumDepartment of Veterinary and Animal Sciences, Production, Nutrition and Health, Faculty of Health and Medical Sciences, University of Copenhagen, Grønnegårdsvej 2, DK-1870 Frederiksberg C, DenmarkLaboratory for Animal Nutrition and Animal Product Quality, Department of Animal Sciences and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, 9000 Gent, Belgium; State Key Laboratory of Grassland and Agro-Ecosystems, International Centre for Tibetan Plateau Ecosystem Management, School of Life Sciences, Lanzhou University, Lanzhou 730000, ChinaDepartment of Grassland and Natural Landscape Sciences, Poznań University of Life Sciences, Dojazd 11 Street, 60-632 Poznań, PolandLaboratory for Animal Nutrition and Animal Product Quality, Department of Animal Sciences and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, 9000 Gent, Belgium; School of Agricultural and Environmental Sciences, Mountains of the Moon University, PO Box 837, Fort Portal, UgandaILVO, Scheldeweg 68, 9090 Melle, BelgiumLaboratory for Animal Nutrition and Animal Product Quality, Department of Animal Sciences and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, 9000 Gent, Belgium; Corresponding authorABSTRACT: The measurement of pH in the reticulorumen in combination with a time–pH threshold has been widely applied in research to diagnose subacute ruminal acidosis. However, other pH metrics also have biological value. In this study, 44 animals were monitored during the transition period using reticuloruminal pH boluses. Traditional and more complex pH characteristics were calculated to characterize the reticuloruminal pH profile: time pH <6, slope of a logistic cumulative pH curve (β0), and deviations [squared error (SqEr)] from pH predictions based on a harmonic static model. In this study, we aimed to examine the associations between those pH metrics and metabolic health parameters, feed intake, and activity. Finally, to describe the reticuloruminal pH dynamically, we also constructed a dynamic linear model. The results of this model were studied in relation to feed intake. All pH parameters were mutually correlated (particularly β0 and SqEr; mean Pearson correlation of −0.52). pH patterns, rather than time pH <6, were associated with metabolic health and feed intake: high variation in daily pH (β0 parameter) was reflected in higher blood concentrations of nonesterified fatty acids. Moreover, pH deviations of the harmonic model were negatively associated with feed intake and rumination behavior. This research confirms the biological importance of pH metrics focusing on pH variation and pH deviations and provides deeper insight into its associations with metabolic health status, feed intake, and activity during early lactation.http://www.sciencedirect.com/science/article/pii/S0022030222003526subacute ruminal acidosisreticuloruminal pH bolusmetabolic health statusdiurnal pH patterns |
| spellingShingle | S. Heirbaut D. Børge Jensen X.P. Jing B. Stefańska P. Lutakome L. Vandaele V. Fievez Different reticuloruminal pH metrics of high-yielding dairy cattle during the transition period in relation to metabolic health, activity, and feed intake Journal of Dairy Science subacute ruminal acidosis reticuloruminal pH bolus metabolic health status diurnal pH patterns |
| title | Different reticuloruminal pH metrics of high-yielding dairy cattle during the transition period in relation to metabolic health, activity, and feed intake |
| title_full | Different reticuloruminal pH metrics of high-yielding dairy cattle during the transition period in relation to metabolic health, activity, and feed intake |
| title_fullStr | Different reticuloruminal pH metrics of high-yielding dairy cattle during the transition period in relation to metabolic health, activity, and feed intake |
| title_full_unstemmed | Different reticuloruminal pH metrics of high-yielding dairy cattle during the transition period in relation to metabolic health, activity, and feed intake |
| title_short | Different reticuloruminal pH metrics of high-yielding dairy cattle during the transition period in relation to metabolic health, activity, and feed intake |
| title_sort | different reticuloruminal ph metrics of high yielding dairy cattle during the transition period in relation to metabolic health activity and feed intake |
| topic | subacute ruminal acidosis reticuloruminal pH bolus metabolic health status diurnal pH patterns |
| url | http://www.sciencedirect.com/science/article/pii/S0022030222003526 |
| work_keys_str_mv | AT sheirbaut differentreticuloruminalphmetricsofhighyieldingdairycattleduringthetransitionperiodinrelationtometabolichealthactivityandfeedintake AT dbørgejensen differentreticuloruminalphmetricsofhighyieldingdairycattleduringthetransitionperiodinrelationtometabolichealthactivityandfeedintake AT xpjing differentreticuloruminalphmetricsofhighyieldingdairycattleduringthetransitionperiodinrelationtometabolichealthactivityandfeedintake AT bstefanska differentreticuloruminalphmetricsofhighyieldingdairycattleduringthetransitionperiodinrelationtometabolichealthactivityandfeedintake AT plutakome differentreticuloruminalphmetricsofhighyieldingdairycattleduringthetransitionperiodinrelationtometabolichealthactivityandfeedintake AT lvandaele differentreticuloruminalphmetricsofhighyieldingdairycattleduringthetransitionperiodinrelationtometabolichealthactivityandfeedintake AT vfievez differentreticuloruminalphmetricsofhighyieldingdairycattleduringthetransitionperiodinrelationtometabolichealthactivityandfeedintake |