Differences in heart rate response at feeding between stall housed and group housed sows

Author(s):  
J.N. Marchant ◽  
A.R.Rudd

The scientific assessment of farm animal welfare requires an amalgam of different measures of both physiology and behaviour. Behavioural measures are relatively easy to obtain but non-invasive measures of internal physiology are somewhat harder to achieve. An increase in the use of applied physiology in training regimes of human athletes, has led to an improved technology of heart rate monitors, making the measurement of heart rates painless and easy to record.The objective of this experiment was to use a human heart rate monitor to investigate differences in heart rate response at feeding between sows housed in three different dry sow housing conditions. Schouten et al (1991) have demonstrated differences in heart rate response at feeding between loose-housed and tethered sows. In the study reported here, stall-housed sows were compared with sows housed in small groups and sows housed in a large group with an Electronic Feeder System (EFS).

2010 ◽  
Vol 4 (1) ◽  
pp. 81-85 ◽  
Author(s):  
Steven W Su ◽  
Weidong Chen ◽  
Dongdong Liu ◽  
Yi Fang ◽  
Weijun Kuang ◽  
...  

Heart rate is one of the major indications of human cardiovascular response to exercises. This study investigates human heart rate response dynamics to moderate exercise. A healthy male subject has been asked to walk on a motorised treadmill under a predefined exercise protocol. ECG, body movements, and oxygen saturation (SpO2) have been reliably monitored and recorded by using non-invasive portable sensors. To reduce heart rate variation caused by the influence of various internal or external factors, the designed step response protocol has been repeated three times. Experimental results show that both steady state gain and time constant of heart rate response are not invariant when walking speed is faster than 3 miles/hour, and time constant of offset exercise is noticeably longer than that of onset exercise.


Diagnostics ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 391 ◽  
Author(s):  
Robert Gajda

This study describes a triathlete with effort-provoked atrioventricular nodal re-entrant tachycardia (AVNRT), diagnosed six years ago, who ineffectively controlled his training load via heart-rate monitors (HRM) to avoid tachyarrhythmia. Of the 1800 workouts recorded for 6 years on HRMs, we found 45 tachyarrhythmias, which forced the athlete to stop exercising. In three of them, AVNRT was simultaneously confirmed by a Holter electrocardiogram (ECG). Tachyarrhythmias occurred in different phases (after the 2nd–131st minutes, median: 29th minute) and frequencies (3–8, average: 6.5 times/year), characterized by different heart rates (HR) (150–227 beats per minute (bpm), median: 187 bpm) and duration (10–186, median: 40 s). Tachyarrhythmia appeared both unexpectedly in the initial stages of training as well as quite predictably during prolonged submaximal exercise—but without rigid rules. Tachyarrhythmias during cycling were more intensive (200 vs. 162 bpm, p = 0.0004) and occurred later (41 vs. 10 min, p = 0.0007) than those during running (only one noticed but not recorded during swimming). We noticed a tendency (p = 0.1748) towards the decreasing duration time of tachycardias (2014–2015: 60 s; 2016–2017: 50 s; 2018–later: 37 s). The amateur athlete tolerated the tachycardic episodes quite well and the ECG test and echocardiography were normal. In the studied case, the HRM was a useful diagnostic tool for detecting symptomatic arrhythmia; however, no change in the amount, phase of training, speed, or duration of exercise-stimulated tachyarrhythmia was observed.


1996 ◽  
Vol 1996 ◽  
pp. 193-193
Author(s):  
P.J. Baynes ◽  
K. Graham ◽  
E.J. Hunter ◽  
H.J. Guise ◽  
R.H.C. Penny

Heart rate has been successfully recorded in sheep, deer and pigs (Baldock and Sibly, (1986) Price, Sibly and Davies, (1993) Webster et al, 1995). This work has shown that resting heart rate can increase in stressful situations. Being able to record heart rates of group-housed sows would complement behavioural observations, if it could be shown that the presence of the monitor did not alter group behaviour. The aim of this study was to assess in a group of active sows, the effect of the presence of a heart rate monitor on behaviour.


1992 ◽  
Vol 24 (Supplement) ◽  
pp. S166
Author(s):  
J. C. Gonzalez ◽  
A. Oliveira ◽  
F. Cheaello ◽  
E. Grassi ◽  
J. P. Hiboiro

2013 ◽  
Vol 82 (4) ◽  
pp. 447-451 ◽  
Author(s):  
Magdaléna Fejsáková ◽  
Jana Kottferová ◽  
Zuzana Dankulincová ◽  
Eva Haladová ◽  
Raquel Matos ◽  
...  

The aim of this study was to assess the influence of various stimuli that confound interpretation of assessed indicators of horse welfare during rest and working period by the use of non-invasive methods of sampling. In total, 40 horses of different breeds and used for different purposes in Slovakia were used. The following indicators were tested: concentration of cortisol in saliva and 11,17-dioxoandrostanes in faeces measured by Elisa methods, heart rate and heart rate variability recording with the Polar Heart Rate Monitor and presence of stereotypical behaviour assessed with a horse questionnaire survey. The evaluated physiological responses were mostly affected by the type of work undertaken, especially horse movement intensity (P < 0.001) and horse equipment used during the working period (P < 0.01). Horses that showed stereotypical behaviour were less stressed during rest (P < 0.05) compared to horses without stereotypical behaviour. Horse breed, age, sex and stabling conditions affected only some of the heart rate indicators. The type of riding style had no fundamental influence on evaluated indicators. These observations highlight the difficulties in determining the welfare status in horses, since measurements can be affected by many factors that need to be investigated for achieving relevant outcomes. This is the first study in Slovakia focusing on the evaluation of horse welfare by non-invasive sampling.


Author(s):  
Lorin Weaver ◽  
Taylor Wooden ◽  
Jake Grazer

Introduction: In this day and age, technology is progressing faster than people know how to keep ahead of the advancements. The new era of technology and smartwatches can be a great benefit to healthcare systems around the world. They can be used for weight management, tracking aerobic exercise, and tracking heart rate. However, if smartwatches can be trusted to accurately help people in their everyday lives, then why aren’t doctors and trainers incorporating them into their outpatient instructions? Consequently, the purpose of this study is to observe the accuracy of Apple Watches and to assess if they are as reliable as the Polar Heart Monitors that can be found in exercise testing labs. Methods: Nine college-aged males and six females participated in the YMCA cycle submaximal test while wearing both a Polar Heart Rate Monitor (H10) and a series 3 or 4 Apple Watch to compare the accuracy of the Apple Watch device.  Heart rate and rating of perceived exertion were taken during each stage of testing. Paired sample t-tests were used to compare the heart rate readings in each stage. Results: There was no statistical difference between the Apple Watch heart rate reading and the Polar Heart Monitor (p > 0.05).Discussion: Based on the results regarding heart rate through the different stages of the YMCA submaximal test, it appears as though the Apple Watch is comparable to the chest strap monitor during cycling. Previous research has shown similar findings during exercise on a treadmill, indicating that the chest strap and Apple Watch measured similar heart rate values (Gillinov et al., 2017) . Based on the findings of this study, it appears Apple Watch heart rate technology is comparable to chest strap heart rate monitors during various modes of physical activity.


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