Results 251 to 260 of about 1,139,197 (299)
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The importance of scale of patchiness for selectivity in grazing herbivores
Oecologia, 1999The notion that spatial scale is an important determinant of foraging selectivity and habitat utilization has only recently been recognized. We predicted and tested the effects of scale of patchiness on movements and selectivity of a large grazer in a controlled field experiment.
M F, WallisDeVries +2 more
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In situ degradabilities of forages selected and not selected by grazing cattle
Canadian Journal of Animal Science, 1996The degradation properties of forages may affect the selective grazing behaviour of cattle. Differences in ruminal degradation characteristics were observed between samples of a 50:50 alfalfa:bromegrass mixture which were sampled from selected and not selected portions of the same pasture by grazing cattle.
E. K. Okine +4 more
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Seasonal diet selection by ewes grazing within contrasting grazing systems
Animal Production Science, 2017Grazing management systems seek to control the relationship among animals, plants and soil by regulating the number of animals and the duration and location of animals. A greater understanding of the diet selection and activity of livestock within grazing systems will assist producers to make informed management decisions about their management within ...
Felicity Cox +3 more
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Selection of grazing‐tolerant lucerne cultivars
Grass and Forage Science, 2008AbstractImprovement of grazing‐tolerance in lucerne (Medicago sativa L.) is an objective of interest worldwide for the acknowledged potential of this species in pastures. A breeding programme applied standard methods of the selection for this trait, which implies continuous stocking and intensive grazing, to germplasm preliminarily selected for ...
L. Pecetti +3 more
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Grazing behaviour and diet selection by Dorper sheep
Small Ruminant Research, 2000The grazing behaviour and diet selection by Dorper sheep, as well as other related aspects (pasture intake, walking habits and trampling) is reviewed. It was clear that Dorper sheep are less-selective grazers, compared to Merino-type breeds. Dorpers utilised shrubs and bushes to a greater extent, but grass to a lesser extent in relation to Merino sheep.
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Selective grazing by zooplankton populations in Southampton Water
Marine Biology, 1979Experiments were made with natural populations of both zooplankton and phytoplankton from Southampton Water (England), using an electronic particle counter to measure grazing effects. What appear to have been large differences within and between experiments in size of particles selected are shown to have been mainly a result of variations in total ...
J. P. Barlow, J. D. C. Monteiro
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Microzooplankton grazing and selectivity of phytoplankton in coastal waters
Marine Biology, 1987Microzooplankton grazing activity in the Celtic Sea and Carmarthen Bay in summer 1983 and autumn 1984 was investigated by applying a dilution technique to high-performance liquid chromatographic (HPLC) analysis of photosynthetic pigments in phytoplankton present within natural microplankton communities.
P. H. Burkill +3 more
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Grazing behavior and diet selection of goats
Small Ruminant Research, 1988Abstract Goats possess characteristics including versatility in harvesting forage and ability to survive under adverse foraging conditions which set them apart from other species of livestock. Classification of goats as grazers or browsers is equivocal especially when grazing patterns are examined over a variety of environmental conditions.
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The role of incisors in selective grazing by cattle and horses
The Journal of Agricultural Science, 2003To clarify the role of the incisors in selective grazing by cattle and horses, experiments were conducted in July 1999, using three Holstein cattle and three thoroughbred horses to investigate bite weight and bite force using hand-constructed swards with 15 loadcells spaced 6×12 cm apart.
A. HONGO, M. AKIMOTO
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Even Repeated Grazing May Select for Overcompensation
Ecology, 19960 0 0 EWif0 0 E 0 00 00 g 0 0 00 00 0 0 0 00 00 0 0 CELEELEiLE iLLEREEDiEREDRELREDEEDiERELD!iDiSiESlliELSiSS0iE i! : i... .. ......... . . .. . ....... ... .. ... . . . ..:ESESiEiiEdiEiEf 00 E 0 :: t0j04:40 i:EA:4:40 WA040 WAW 0 0 iA: iAg E 0 0 E i :0 WAg 0 0 0 g 0 0 itE it!
Patric Nilsson +2 more
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