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  • Applicability of polar sport tester for cattle heart rate measurements
    Janžekovič, Marjan, 1959- ...
    The goal of the study was to find out the influence of the speed of consumption and the consumed amount of concentrate on cows in milking parlour during effective milking. By measuring the heart rate ... (HR) without direct intervention on animal body it was investigated, if too short time for consumption concentrate induces stress in dairy cows. Design/methodology/approach: During milking of cows of black-white breed the measurements were carried out to investigate the following features: the HR, duration of effective milking and consumption of concentrate, amount of consumed concentrate as well as the amount of milk in kg within milking period. Findings: During milking at 162 measurements, approximately 82.38 min-1 HR was established. The highest HR was established in the first 30 seconds (84.70 min-1), in middle of milking period a decrease of HR was observed (82.18 min-1) and thereafter it remained stable in the last 30 seconds (82.20 min-1). Between the speed of consumption and the amount of concentrate consumed, a significantly high correlation coefficient was established (rP = 0.85; P 0.001). An average speed of consumption was 249.7 gper minute. Up to 2.5 kg of consumed concentrate, no increase in HR was observed. But the increase in the consumed amount of concentrate over 2.5 kg resulted in a noticeable elevation of HR. Research limitations/implications: Studies to assess the efficacy of measuring the HR without direct interventionon animal body are currently under way. Practical implications: The suitability of HR as a physiological indicator of stress was proved by accidental fall down of cow in the milking canal. In this case the HR reached 218 % of normal average value for HR of other milking periods of this animal. Originality/value: For HR measurements, a special equipment, PST Profi, which is normally used by top-level athletes was applied. This instrument was altered and tested in preliminary test period on different cattle categories.
    Vir: Proceedings of the Twelfth International Scientific Conference CAM3S'2006, Gliwice-Zakopane, [27th - 30th November] 2006 [Elektronski vir] (4 str.)
    Vrsta gradiva - prispevek na konferenci
    Leto - 2006
    Jezik - angleški
    COBISS.SI-ID - 10947606

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