Your search for keyword(s) "digestion" resulted in 8 record(s).

Title: Effect of ruminal incubation on perennial pepperweed germination: Journal: Rangeland Ecology & Management; Authors: M. F. Carpinelli, C. S. Schauer, D. W. Bohnert, S. P. Hardegree, S. J. Falck, and T. J. Svejcar; Date: 2005; Summary: Cannulated steers were used in a short-term pen study to determine the effects of rumen digestion on pepperweed seed germination in two experiments. Experiment 1: examined seed germination following ruminal incubation for 48, and 96 hours. Experiment 2: measured seed germination following incubation in water for 48 hours, and complete digestive tract incubation. ...; Agrovoc Control Words: Riparian zones, Rangelands, Weeds; View more details about this article

Title: Seed recovery and germination of reseeded species fed to cattle: Journal: Journal of Range Management; Authors: K. M. Doucette, K. M. Wittenberg, and W. P. McCaughey; Date: 2001; Summary: Doucette et al measured the effects of cattle digestion on the viability of 7 plant species to determine if cattle could be used as rangeland seed dispersal agents for these species. Seed characteristics (weight, size, smoothness, hardness) varied by species, and therefore, effects of digestion also varied by species. This included decreased viability, physical damage, and different passage rates. Woods rose (Rosa woodsii) and snowberry (Symphoricarpos albus) had the greatest recovery of viable seeds due to their increased seed hardness, size, and w ...; Agrovoc Control Words: Riparian zones, Rangelands, Wildlife; View more details about this article

Title: Effects of ruminant digestion on germination of Lehmann lovegrass seed: Journal: Journal of Range Management; Authors: E. L. Fredrickson, R. E. Estell, K. M. Havstad, T. Ksiksi, J. Van Tol, and M. D. Remmenga; Date: 1997; Summary: Fredrickson et al. measured the effects of sheep mastication and digestion on germination of Lehmann lovegrass (Eragrostis lehmanniana) seed in a series of experiments using cannulated sheep. Sheep mastication damaged 65% of seeds before they entered the rumen, but of the undamaged seeds that enter the rumen, most will pass in the feces within 72 hours and 32-49% of these seeds will germinate. In sacco and in vitro digestion trials indicated that germinability of seeds decreased as time spent in the rumen increased, however, seeds were somewhat resistant to ruminal diges ...; Agrovoc Control Words: Riparian zones, Rangelands, Wildlife; View more details about this article

Title: Adaptations to and consequences of an herbivorous diet in grouse and waterfowl: Journal: The Condor; Authors: J. S. Sedinger; Date: 1997; Summary: This review looks at diet selection in grouse and waterfowl in the context of their herbivorous diets and discusses adaptations to herbivory in these groups. Grouse eat plant foods containing lower concentrations of protein than foods of waterfowl, especially during the breeding season. Several species of grouse and small waterfowl (ducks) eat invertebrates during periods of high protein requirement, such as growth or egg production. Grouse and waterfowl differ little from each other in the morphology of digestive structures. The principal exception is the ceca, which are 5 times as long i ...; Agrovoc Control Words: Riparian zones, Rangelands, Wildlife; View more details about this article

Title: Post-harvest seed dormancy effects on kleingrass germination following simulated digestion by cattle: Journal: Crop Science; Authors: W. R. Ocumpaugh, C. R. Tischler, and L. S. Valle; Date: 1995; Summary: Grass seed germinability declines linearly with increased exposure to in vivo and in virto digestions, but the factors that regulate loss of seed germinability are unknown. One potential mechanism of seed dispersal is seed dormancy. A laboratory study at Texas A & M hypothesized that 'Selection 75' kleingrass (Panicum coloratum) seed with a high level of post-dormancy would withstand the negative effects of digestion better then TEM-LD1 kleingrass seed with a low level of post-harvest dormancy. When germinated immediately following digestion, Selection 75 seed maint ...; Agrovoc Control Words: Riparian zones, Rangelands, Wildlife; View more details about this article

Title: Recovery, germinability and viability of leafy spurge (Euphorbia esula) seeds ingested by sheep and goats: Journal: Weed Technology; Authors: J. R. Lacey, R. Wallander, and K. Olson-Rutz; Date: 1992; Summary: In a short term study, sheep and goats were fed alfalfa and barley mixed with leafy spurge seeds (3000, or 1500) to determine the recovery, germinability and viability of the weed seeds after passage through the gastrointestinal tract. Fecal material from sheep and goats was collected for 6 to 11 days after seeds were fed, respectively or until no seeds were recovered for two consecutive days. Samples were washed through a 0.99 mm screen to separate out the leafy spurge seeds. Sub-samples of the seeds were then tested for viability and germination rates. ...; Agrovoc Control Words: Weeds, Grazing, Seed dispersal; View more details about this article

Title: Viability, germination, and emergence of cattle-fed jointed goatgrass seed: Journal: Journal of Production Agriculture; Authors: D. J. Lyon, D. D. Baltensperger, and I. G. Rush; Date: 1992; Summary: Fistulated steers were fed jointed goatgrass (Aegilops cylindrica Host.) seed at three rates (0.64 1.28 and 2.56 lbs/steer) in a short term pen study to determine the viability, germination and emergence of the seed after cattle digestion. Samples were taken from the rumen and the feces of the cattle 24, 36 and 48 hours after feeding. ...; Agrovoc Control Words: Weeds, Feedstuffs, Seed dispersal; View more details about this article

Title: The germination and viability of excreted common crupina (Crupina vulgaris) achenes: Journal: Weed Science; Authors: D. C. Thill, D. L. Zamora, and D. L. Kambitsch; Date: 1986; Summary: Common crupina (Crupina vulgaris) seed germination and recovery rates were examined after passing through the digestive tracts of sheep, cattle, deer, horses and Chinese pheasants in a short term pen study in Moscow, Idaho. Seeds were collected, and percent germination was determined prior to feeding trails. Fecal material was collected during each feeding trial to determine rate of recovery and viability of recovered seeds. ...; Agrovoc Control Words: Weeds, Rangelands, Seed dispersal; View more details about this article