Alternatively, the pH-measuring device can be inserted orally into the rumen in a bolus form, which is also a transmitter sending the pH data continuously to a computer. The latter method is very promising for clinical practice, but, unfortunately, is currently too expensive. It is easier and...
An electronic bolus (ebolus by eCow limited, Glasgow, UK) was also placed in the rumen of each animal to monitor rumen pH in real-time with pH measurements taken every 15 min. Throughout the study, 3 eboluses failed to operate and 4 were replaced due to mechanical malfunction and failur...
subacute ruminal acidosis reticuloruminal pH bolus metabolic health status diurnal pH patterns INTRODUCTION The early lactation period of dairy cows is often characterized by feed intake depression in combination with increasing demands of energy for milk production (Ingvartsen, 2006). Hence, the energy...
The objective of this study was to validate the efficacy of a radiotelemetric bolus (RTB) to detect changes in ruminal temperature resulting from (1) systemic illnesses that are associated with febrile responses and (2) subacute ruminal acidosis (SARA). Eight rumen-fistulated, lactating Holstein ...
acidosis, bovine, datalogger, rumen.This paper describes the performance of a prototype telemetric intraruminal bolus that measures and records pH continuously, can be delivered orally to the reticulum via bolling gun, has no external attachments and allows unrestricted activity of the animal. When ...
Bolus readings for ruminal pH (RpH) and ruminal temperature (RT) were recorded every minute for 72 h after dosing and compiled in 3 h increments for repeated measure analysis. Rumen pH was taken manually every 3 h for 72 h after dosing and analyzed with a repeated measures analysis. There...
475 observations of reticuloruminal pH values obtained from 75 cattle in three herds (one beef and two twice-daily milking herds) to assess sampling strategies for the diagnosis of subacute rumen acidosis (SARA), and to evaluate the ability of different numbers of bolus devices to accurately ...
acidosiscowsdairy cattledairy cowsdiagnosisdiagnostic techniquespHrumentelemetryAustraliaThis paper describes the performance of a prototype telemetric intraruminal bolus that measures and records pH continuously, can be delivered orally to the reticulum via bolling gun, has no external attachments and allows...
AcidosisBolusCattleDiagnosisReticulorumenThe application of pH observations to clinical practice in dairy cattle is based on criteria derived primarily from single time-point observations more than 20 years ago. The aims of this study were to evaluate these criteria using data collected using continuous...