[Nycterohemeral patterns of ingestive behavior of sheep]
(1998) Sociedade Brasileira de Zootecnia. Revista — Vol. 27, n° 2, p. 362-369 (1998)
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- Nycterohemeral patterns of sheep ingestive behavior were evaluated for six months, from October to April, in Belgium. Sheeps were maintained indoors and fed hay nd libitum, at 9 h and 16 h. Spectral analysis of the time series of chewing time every 15 minutes was performed using the finite Fourier transformation, allowing the decomposition of 96 times series into 48 frequencies. During the six periods of observation, the nycterohemeral distribution of eating or ruminating time of the sheep followed mainly periodicity of 24, 8 and 6 hours. The intake of sheep tended to be positively related to the relative importance of a 3,4-hours periodicity for the spent eating time and it was negatively related to the relative importance of a 24-hours periodicity for the spent ruminating time. Sheep with larger voluntary intake tended to distribute consistently their ingestion time during the day.
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Fischer, V., Deswysen, A. G., Despres, L., Dutilleul, P., & Lobato, J. (1998). [Nycterohemeral patterns of ingestive behavior of sheep]. Sociedade Brasileira de Zootecnia. Revista, 27(2), 362-369. https://hdl.handle.net/2078.5/56341 (Original work published 1998)