Physiological changes during feeding and rumination in cows

Tokushi Komatsu, Yumi Higashiyama, Michiru Fukasawa, Kazuo Katoh, Akinori Oshibe

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    1 Citation (Scopus)

    Abstract

    In this study, we investigated the physiological changes in cattle during feeding and rumination. We collected blood samples every 5min by using an automated blood sampling system and simultaneously recorded feeding, ruminating, and other behaviors using a video camera. Plasma non-esterified fatty acid (NEFA) concentrations continuously decreased during feeding and decreased temporarily during rumination. Plasma glucose concentration continuously decreased during feeding and remained stable during rumination. During feeding and rumination, there were no characteristic increases and subsequent decreases in plasma insulin and growth hormone (GH) concentrations, although insulin concentrations were positively correlated with glucose concentration. NEFA concentrations were not correlated with GH and insulin concentrations. In terms of chewing behavior, feeding and rumination are similar; therefore, the changes in metabolites such as NEFA might have been the same. Combination of behavioral observations and application of an automated blood sampling system could contribute to new findings on behavioral and physiological changes regarding the temporary decrease in plasma NEFA concentration during rumination in ruminants.

    Original languageEnglish
    Pages (from-to)271-276
    Number of pages6
    JournalAnimal Science Journal
    Volume85
    Issue number3
    DOIs
    Publication statusPublished - 2014 Mar 1

    Keywords

    • Cows
    • Feeding
    • Growth hormone
    • Non-esterified fatty acids
    • Rumination

    ASJC Scopus subject areas

    • Agricultural and Biological Sciences(all)

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