Automatic Determination of Grazing and Feeding Behavior of Horse in Paddock and Stall

Matsui, Kanji; Shiose, E.; Okubo, Tadakatu

doi:10.2508/chikusan.61.648

Nihon Chikusan Gakkaiho

1990

DOI: 10.2508/chikusan.61.648

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Automatic Determination of Grazing and Feeding Behavior of Horse in Paddock and Stall

Kanji Matsui¹,

E. Shiose²,

Tadakatu Okubo³

Abstract: Using a set of the data logger system developed to automatically record the number of jaw movements and steps, posture, head position and heart rate of cattle on pasture, the grazing and feeding behavior of a horse in the paddock and stall were analyzed.

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1994

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Cited by 3 publications

(6 citation statements)

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“…A telemetry system for monitoring the heart rate is not well suited to large fields, because the range of a standard medical telemetry system in Japan is limited [8]. The Holter electrocardio graph is used for monitoring the electrocardio gram or heart rate in the field of veterinary medicine [13], but the data-analysis is expensive , and the data-analyzing software is not necessarily suited to various kinds of domestic animals.…”

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confidence: 99%

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An Ambulatory Data-logger Apparatus for Determining Heart Rate of Horses Grazed on Pastures.

Matsui

1994

JES

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An ambulatory data-logging system for recording heart rate and/or the R-R interval in horses was developed. This system consisted o f a pulse generator for detecting heart beats and a data memory apparatus. The pulse signal generated by the pulse generator was fed to the data memory apparatus, and the heart rate and/or R-R interval was measured . The heart rate o f a riding horse was recorded for over 24 h and the accuracy in determining heart beats was monitored with an ambulatory EGG recorder. False beat counts were 0 .04% of total heart beats during the housed period and 1.6% during the grazing period in a paddock . It was thought that this system might become a useful tool to use in studying behavior and physiology based on the heart rate and/or R-R intervals in free-ranging horses. Keywords: ambulatory data-logger, heart rate, horse, R-R intervalIn the field of animal management, pasture management and animal behavior, a continuous recording of the heart rate is important in estimat ing heat production [12], daily energy intake [7], physiological adaptation and behavior [3,4,10,11,15]. A telemetry system for monitoring the heart rate is not well suited to large fields, because the range of a standard medical telemetry system in Japan is limited [8]. The Holter electrocardio graph is used for monitoring the electrocardio gram or heart rate in the field of veterinary medicine [13], but the data-analysis is expensive , and the data-analyzing software is not necessarily suited to various kinds of domestic animals. In recent years portable heart rate meters have been developed, and used in studies of exercising horses [1,2,14], but they cannot measure the R-R interval, and also cannot be connected to another measuring apparatus. In the present study, there fore, an ambulatory data-logging system for re cording the heart rate and/or R-R intervals in horses was developed.The heart rate memory apparatus (standard type or 64 K byte type, T.K.K. 1850a,1876a, Takei Scientific Instruments, Tokyo) used as a data memory apparatus in the present study was developed for human subjects, but it can measure the heart rate in cattle as well as in humans accurately [6] because the heart rate and ampli tude of the QRS complex are in the same range. The properties of this apparatus mean that it is capable of determining heart beats accurately when a QRS complex ranging from about 0.6 mV to 1.4 mV is input into the apparatus and the heart rate ranges from about 40 beats to 255 beats per min.The heart rate in horses could not be measured accurately using this apparatus, because the ampli tude of the QRS complex in horses is generally greater than in the human and cattle, and the heart rate is markedly lower than that in human and cattle [5,6]. In the present study, therefore, a pulse generator (Takei Scientific Instruments, Tokyo; made for a trial) for detecting heart beats in horses was developed. The pulse generator generates pulse signals of heart beats, these signals are fed into a heart rate memory apparatus and the number of ...

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“…As the pulse generator and heart rate memory apparatus are portable and stored in a plastic case (9 cm X 12 cm x 5cm), this system can be mounted on the back of an animal, as shown in a previous paper [8]. It is therefore used on free-ranging horses.…”

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An Ambulatory Data-logger Apparatus for Determining Heart Rate of Horses Grazed on Pastures.

Matsui

1994

JES

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“…The variation of the R-R intervals can be analyzed by continuous measurement with the electrocardiogram and it is used to assess the effects of autonomic nervous activity on the cardiac function [1, 3,9]. We developed ambulatory data-logging systems for recording heart rate, R-R intervals [6] and the number of jaw movements per min [5,7,8]. Feeding behavior is characterized automatically by the number of jaw movements [5][6][7][8].…”

mentioning

confidence: 99%

“…We developed ambulatory data-logging systems for recording heart rate, R-R intervals [6] and the number of jaw movements per min [5,7,8]. Feeding behavior is characterized automatically by the number of jaw movements [5][6][7][8].…”

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confidence: 99%

“…It is therefore necessary to load down the data into a computer once before the data storage capacity is exceeded, that is, within about 12-h, if the average heart rate in the horse is about 40 beats per min [6]. with a multi-channel data logger (Takei Scientific Instruments, Tokyo) [8]. Animal and experimental conditions: A riding horse (Anglo Arab, 5 years old, gelding) was used under ordinary conditions at the Animal Husbandry Experiment Station of the University of Tokyo.…”

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Relationships between Diurnal Variation in R-R Interval and Feeding Behavior in the Horse.

Matsui

Sugano

Sawasaki

1994

JES

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Heart rate, R-R intervals and the number of jaw movements were measured simultaneously for a 24-h period in an adult horse in a housed free-moving state. Feeding behavior was characterized by the number of jaw movements. Dropped beats could be monitored from a series o f R-R intervals, and these dropped beats were regarded as second-degree A-V blocks. Thirty-eight dropped beats occurred during a 24-h period. Second-degree A-V blocks frequently occurred in the night (p<0.001) and scarcely occurred in the active feeding periods (p<0 .001). Moreover, the R-R interval periodically fluctuated at rest in the night. It was speculated that this periodical fluctuation in R-R interval is a respiratory sinus arrhythmia. This arrhythmia was not observed during feeding periods. A periodic violent fluctuation in the R-R intervals persisting for about 10 min was observed in the interval between feeding periods in the middle o f the night, and this episode might occur during paradoxical sleep (REM sleep).

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Polygraphic Recordings of Body Temperature, Heart Rate, Respiratory Rate and Grazing and Rumination Behavior of Cattle by an Ambulatory Data-logger Method

寛二¹

1995

Nihon Chikusan Gakkaiho

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Using an ambulatory data-logging system, 1) rectal temperature, 2) vaginal temperature, 3) skin temperature, 4) air temperature at 5cm above the chest band (5cm temperature), 5) heart rate, 6) respiratory rate, 7) number of jaw movements and 8) number of pauses between jaw movements longer than 3sec were recorded simultaneously for grazing adult Holstein cow in a hot summer environment.The apparatus was mounted on the back of the cow. Grazing and rumination periods were distinguished from jaw movements or jaw movements and pauses vaginal temperature. Twenty four-hour relationships among rectal, vaginal, skin and 5cm temperature, heart rate, respiratory rate and grazing and rumination behavior in a hot environment were considered. It was estimated from the 5cm temperature whether the animal sheltered in the shade during the day or returned into the sun. The present ambulatory data-logging system is a useful tool for analyzing the physiological and behavioral variables of free-ranging cattle for over 24 hours in a hot environment.

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Automatic Determination of Grazing and Feeding Behavior of Horse in Paddock and Stall

Abstract: Using a set of the data logger system developed to automatically record the number of jaw movements and steps, posture, head position and heart rate of cattle on pasture, the grazing and feeding behavior of a horse in the paddock and stall were analyzed.

Cited by 3 publications

References 4 publications

An Ambulatory Data-logger Apparatus for Determining Heart Rate of Horses Grazed on Pastures.

An Ambulatory Data-logger Apparatus for Determining Heart Rate of Horses Grazed on Pastures.

Relationships between Diurnal Variation in R-R Interval and Feeding Behavior in the Horse.

Polygraphic Recordings of Body Temperature, Heart Rate, Respiratory Rate and Grazing and Rumination Behavior of Cattle by an Ambulatory Data-logger Method

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