The HABRI Foundation is calling for research proposals to investigate the health outcomes of pet ownership and/or animal-assisted activity or therapy, both for the people and the animals involved. To learn more, visit https://habri.org/grants/funding-opportunities/ close

 
You are here: Home / Tags / Grasslands and rangelands / All Categories

Tags: Grasslands and rangelands

All Categories (61-80 of 118)

  1. Ingestive behaviour in sheep under field conditions

    Contributor(s):: Bueno, L., Ruckebusch, Y.

  2. Patterns and frequency of social interactions in young grazing bulls and steers

    Contributor(s):: Hinch, G. N., Lynch, J. J., Thwaites, C. J.

    Two herds of Hereford cattle, each containing bulls and steers, were observed at ages between 10 and 18 months. Bulls showed higher frequencies of all interactions except grooming and running, but the differences between bulls and steers were significant only at ages greater than 14 months. A...

  3. Relationship between dispersion behaviour of free-ranging cattle and forage conditions

    Contributor(s):: Dudzinski, M. L., Muller, W. J., Low, W. A., Schuh, H. J.

    Distribution of cattle grazing the rangeland communities of a 170-km2 paddock in central Australia was determined by aerial survey at fortnightly intervals over 4.5 years. Cattle groups were generally more clumped than would be expected at random. Cattle aggregated into larger groups, and the...

  4. Separation of ewes from twin lambs: incidence in several sheep breeds

    Contributor(s):: Alexander, G., Stevens, D., Kilgour, R., Langen, H. de, Mottershead, B. E., Lynch, J. J.

    The ability of ewes and their lambs to keep together during the 1st and 2nd day of life, when the mother-offspring bond is consolidating, was examined in fine-wool Merino, Dorset Horn, Romney and Suffolk X (Border Leicester X Merino) sheep. 45.7% of twin-bearing Merinos became permanently...

  5. Statistical and probabilistic estimators of forage conditions from grazing behaviour of Merino sheep in a semi-arid environment

    Contributor(s):: Dudzinski, M. L., Schuh, H. J., Wilcox, D. G., Gardiner, H. G., Morrissey, J. G.

    The flock structure of Merino ewes and rams was recorded from the air in 22 surveys over 3 yr in a large semi-arid area of W. Australia. Forage production and body wt. data were collected over the same period. A dispersion index, DI (with zero value when all the sheep were in 1 group and with...

  6. The effects of maternal influences on sheep: breed differences in grazing, resting and courtship behaviour

    Contributor(s):: Key, C., Maciver, R. M.

    Clun Forest and Welsh Mountain sheep were lambed over the same period in a lowland area and half the lambs were cross-fostered by the other breed. 2 wk after lambing was over, half the female lambs with their dams were transferred to fenced upland pastures, the breeds being kept separate, until...

  7. A note on diet selection by goats on a semi-arid temperate rangeland throughout the year

    Contributor(s):: Ricardi, C., Shimada, A.

    A descriptive study and an experiment assessed the selectivity of goats on restricted grazing on a semi-arid temperate rangeland. In 1987 a mixed-breed herd was monitored once a week for 16 consecutive weeks from April to July. In April, July and October of 1989, and January of 1990, the same...

  8. A note on eating behaviour of dairy cows at different stocking systems - diurnal rhythm and effects of ambient temperature

    Contributor(s):: Taweel, H. Z., Tas, B. M., Smit, H. J., Tamminga, S., Elgersma, A.

    This experiment was aimed at studying the diurnal rhythm of dairy cows eating behaviour at different stocking systems, and quantifying the effect of daily ambient temperature on this diurnal rhythm. In two experiments carried out in the summer of 2003 in The Netherlands, eight dairy cows were...

  9. Bite mechanics of cattle and sheep grazing grass-dominant swards

    Contributor(s):: Woodward, S. J. R.

    Numerous experiments have shown that animals grazing pasture remove only a portion of the sward height offered and that bite area increases with sward height but decreases slightly as sward bulk density increases. A number of theories have been proposed to explain these patterns. One suggestion...

  10. Cattle generalise visual cues from the pen to the field to select initial feeding patches

    | Contributor(s):: Renken, W. J., Howery, L. D., Ruyle, G. B., Enns, R. M.

    Free-grazing ruminants forage in environments containing multiple levels of complexity; the forage selection process operates at the landscape scale, when selecting feeding sites, and at the plant part level when selecting actual bites. Pen trials have shown that livestock associate visual cues...

  11. Conditioning ewes and lambs to increase consumption of spotted knapweed

    | Contributor(s):: Whitney, T. R., Olson, B. E.

    Spotted knapweed (Centaurea maculosa Lam.) is an invasive plant that alters species composition and grazing value of rangelands in the northwestern United States. The spread of invasive plants may be reduced by using livestock as a biological control. We determined if mature ewes and their...

  12. Extensive ranging by sheep released onto an unfamiliar range

    | Contributor(s):: Warren, J. T., Mysterud, I.

    During radio telemetry studies of domestic sheep on open forested ranges in Hedmark County in southeastern Norway, several examples of extremely extensive ranging, either by individual sheep introduced into established flocks or by flocks turned onto unfamiliar ranges, have been recorded. In one...

  13. Free-ranging cattle water consumption in southcentral New Mexico

    | Contributor(s):: Rouda, R. R., Anderson, D. M., Wallace, J. D., Murray, L. W.

    Water-drinking behaviour of 67 beef cattle grazing on rangelands (vegetation included Hilaria mutica, Scleropogon brevifolius, Sporobolus airoides, Sporobolus contractus, Sporobolus flexuosus, Prosopis juliflora var. glandulosa, Psorothamnus scoparius and Yucca elata) without or with a protein...

  14. Grazing distribution of sheep and kangaroos in a semi-arid woodland

    | Contributor(s):: Terpstra, J. W., Wilson, A. D.

    The grazing distribution of sheep and kangaroos was studied within a semi-arid mulga [Acacia aneura] woodland in the rangelands of Australia. Observations were made on 3 occasions over 6 months on 6 plots of a grazing trial. Three of the plots were grazed by sheep and kangaroos, and 3 by sheep...

  15. Individualistic herds: individual variation in herbivore foraging behavior and application to rangeland management

    | Contributor(s):: Searle, K. R., Hunt, L. P., Gordon, I. J.

    Rangeland systems cover vast areas of the earth's surface containing great diversity of life, and contribute to the livelihoods and welfare of millions of people. The management of rangeland systems for ecological and commercial outcomes is driven by a need to understand how grazing animals...

  16. Influence of stock density and rate and temporal patterns of forage allocation on the diet mixing behavior of sheep grazing sagebrush steppe

    | Contributor(s):: Shaw, R. A., Villalba, J. J., Provenza, F. D.

    An animal's ability to select a diet depends on forage availability, the density of herbivores, and the allocation of forage resources. We hypothesized that the temporal and spatial availability of forages in sagebrush steppe vegetation both influence food selection and may encourage lambs to...

  17. Influence of weaning age and an experimental Haemonchus contortus infection on behaviour and growth rates of lambs

    | Contributor(s):: Schichowski, C., Moors, E., Gauly, M.

    Four groups of 20 lambs each, differing in weaning age (6 or 13 weeks) and infection with Haemonchus contortus (infection after weaning or simultaneous to weaning), were observed and compared regarding the behaviour before, during and after these procedures. Furthermore the influence on...

  18. Minimizing disturbance to wildlife by tourists approaching on foot or in a car: a study of kangaroos in the Australian rangelands

    | Contributor(s):: Wolf, I. D., Croft, D. B.

    Approaching wildlife to attain a closer viewing experience is common amongst visitors to natural areas. We examined how tourists approach free-living kangaroos during encounters in a popular tourism destination in South Australia. We then simulated the typical properties of approaches to...

  19. Open-field test behaviour of growing swine maintained on a concrete floor and a pasture

    | Contributor(s):: Taylor, L., Friend, T. H.

    Open-field test behaviours of 5 barrows and 5 gilts from each of two housing treatments were recorded for 5-minute periods. The pigs had been housed in their respective systems (pasture or concrete floor) for 6 weeks and averaged 18 weeks old at the time of the experiment. The 38 x 198-m pasture...

  20. The effect of early handling of foals on their reaction to handling, humans and novelty, and the foal-mare relationship

    | Contributor(s):: Sondergaard, E., Jago, J.

    The natural behaviour of horses in response to danger is to take flight, and consequently human handlers can be injured. Reducing the flight response and general reactivity of horses is therefore likely to reduce the incidence of injuries to handlers. In this experiment we investigated the effect...