Publisher : Asian Australasian Association of Animal Production Societies
DOI : 10.5713/ajas.2002.745
Title & Authors
The Effects of Recording Interval on the Estimation of Grazing Behavior of Cattle in a Daytime Grazing System Hirata, M.; Iwamoto, T.; Otozu, W.; Kiyota, D.;
The effects of recording interval (1, 2, 3, 4, 5, 10, 15, 20 and 30 min) on the estimation of some grazing behavior variables in beef cows and calves (<4 months old) were investigated in a daytime grazing (7 h) system utilizing a bahiagrass (Paspalum notatum Flugge) pasture (a 1.1 ha paddock and a 0.4 ha resting area). Recording intervals of 10-30 min tended to underestimate the time spent grazing and ruminating and overestimate the time spent resting by animals, whereas intervals of 1-5 min resulted in almost constant estimates. In all grazing activities, the errors of estimation became larger when the recording interval exceeded 5 min. The accuracy of estimation was higher for grazing time>rumination time>resting time. An increase in recording interval always decreased estimates of the distance walked by animals. It was concluded that recording intervals of 1-5 min provide reliable estimates of the time spent grazing, ruminating and resting. It was also concluded that positioning of animals at 1 min intervals may provide estimates of walking distance with acceptable bias toward underestimation.
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Allden, W. G. and I. A. M. Whittaker. 1970. The determinants of herbage intake by grazing sheep: the interrelationship of factors influencing herbage intake and availability. Aust. J. Agric. Res. 21:755-766.
Chacon, E. and T. H. Stobbs. 1976. Influence of progressive defoliation of a grass sward on the eating behaviour of cattle. Aust. J. Agric. Res. 27:709-727.
Gary, L. A., G. W. Sherritt and E. B. Hale. 1970. Behavior of Charolais cattle on pasture. J. Anim. Sci. 30:203-206.
Hasegawa, N. and H. Hidari. 2001. Relationships among behavior, physiological states and body weight gain in grazing Holstein
Hendricksen, R. and D. J. Minson. 1980. The feed intake and grazing behaviour of cattle grazing a crop of Lablab purpureus cv. Rongai. J. Agric. Sci. Camb. 95:547-554.
Higashiyama, M. and M. Hirata. 1995. Analysis of a Japanese Black Cattle rearing system utilizing a bahiagrass (Paspalum notatum Flügge) pasture. 2. Relationships between the factors considered to affect animal production. Grassl. Sci. 41:114-121.
Hodgson, J. 1982. Ingestive behaviour. In: Herbage Intake Handbook (Ed. J. D. Leaver). British Grassland Society, Hurley, UK, pp. 113-138.
Matsui, K., M. Shindo, Y. Sei and M. Hirasawa. 1996. A system for recording steps by grazing cattle and estimation of distances walked. Grassl. Sci. 42(ext):370-371.
Quinn, J. A. and D. F. Hervey. 1970. Trampling losses and travel by cattle on sandhills range. J. Range Manage. 23:50-55.
Sato, S., A. Nishiwaki, Y. Yashima and K. Sugawara. 1996. Travelling distances to grazing sites and resting sites in cattle. In: Proc. 8th AAAP Anim. Sci. Congr. Japanese Society of Zootechnical Science, Tokyo. pp. 930-931.
Sneva, F. A. 1970. Behavior of yearling cattle on eastern Oregon range. J. Range Manage. 23:155-157.
Standing Committee on Agriculture. 1990. Feeding Standards for Australian Livestock. Ruminants. CSIRO, East Melbourne, Australia. pp. 1-76.
Vallentine, J. F. 1990. Grazing Management. Academic Press, San Diego, pp. 154-156.