%0 Journal Article
%T Statistical Evaluations of Variations in Dairy CowsĄŻ Milk Yields as a Precursor of Earthquakes
%A Masashi Hayakawa
%A Mitsuaki Ohta
%A Nobuyo Ohtani
%A Tomokazu Asano
%J Archive of "Animals : an Open Access Journal from MDPI".
%D 2017
%R 10.3390/ani7030019
%X There are many reports of abnormal changes occurring in various natural systems prior to earthquakes. Unusual animal behavior is one of these abnormalities; however, there are few objective indicators and to date, reliability has remained uncertain. We found that milk yields of dairy cows decreased prior to an earthquake in our previous case study. In this study, we examined the reliability of decreases in milk yields as a precursor for earthquakes using long-term observation data. In the results, milk yields decreased approximately three weeks before earthquakes. We have come to the conclusion that dairy cow milk yields have applicability as an objectively observable unusual animal behavior prior to earthquakes, and dairy cows respond to some physical or chemical precursors of earthquakes
%K dairy cows
%K earthquake precursors
%K unusual animal behavior
%K milk yields
%K subionospheric very low frequency/low frequency (VLF/LF) propagation
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5366838/