Grassland in a changing world. Proceedings of the 23rd General Meeting of the European Grassland Federation, Kiel, Germany, 29th August - 2nd September 2010, 2010
SummaryChenopodium album became a problem weed in sugar beet production, due to resistance to met... more SummaryChenopodium album became a problem weed in sugar beet production, due to resistance to metamitron, a key herbicide in this crop. Dispersal of the seeds from resistant biotypes may occur due to spread by wind, animals, agricultural machinery or manure. This study examined the effect of ensiling, digestion by cattle and storage in slurry and farmyard manure on the germination and viability of the seeds of one susceptible and three resistant C. album populations. After 4 weeks in a maize silo, seed viability of C. album populations was reduced drastically to 0–5%. Incubation for 24 h in the rumen followed by a post‐ruminal digestion in vitro of intact seeds only resulted in a small reduction in viability in one C. album population. Storage in a slurry cellar for 16 weeks reduced the viability of intact seeds of the C. album populations to 25–60%. Only 0–1% of the seeds remained viable after storage in a farmyard manure heap for 4 weeks. An accelerated ageing experiment showed se...
... DepartmentAGROSELVITER, University of Turin, Italy; 3Research Centre for Fodder Crops and Dai... more ... DepartmentAGROSELVITER, University of Turin, Italy; 3Research Centre for Fodder Crops and Dairy Production, Agricultural Research Council, Lodi, Italy; marta. ... oils (5.0 mg/incubation) were incubated in vitro with rumen fluid collected from 2 non-lactating Holstein dairy cows ...
Hassim, H. A., Lourenço, M., Goh, Y. M., Baars, J. J. P. and Fievez, V. 2012. Rumen degradation o... more Hassim, H. A., Lourenço, M., Goh, Y. M., Baars, J. J. P. and Fievez, V. 2012. Rumen degradation of oil palm fronds is improved through pre-digestion with white rot fungi but not through supplementation with yeast or enzymes. Can. J. Anim. Sci. 92: 79–87. Rumen fermentation kinetics of oil palm fronds (OPF) supplemented or not with enzymes (Hemicell® or Allzyme SSF®) or yeasts (Levucell®SC or Yea-Sacc®) were studied through an in vitro gas production test (96 h) (exp. 1). In exp. 2, enzymes were supplemented to OPF pre-treated during 3 or 9 wk with either one of five white rot fungi strains. Yeasts and enzymes were tested both in active and inactive forms, which revealed the most appropriate set-up to distinguish between the rate of supplements as direct contributors to the fermentation substrate vs. stimulators of the fermentation of the basal substrate. In exp 1, addition of active and inactive Yea-Sacc® increased the apparently rumen degradable carbohydrates (ARDC) by 11%, whereas...
Grassland in a changing world. Proceedings of the 23rd General Meeting of the European Grassland Federation, Kiel, Germany, 29th August - 2nd September 2010, 2010
SummaryChenopodium album became a problem weed in sugar beet production, due to resistance to met... more SummaryChenopodium album became a problem weed in sugar beet production, due to resistance to metamitron, a key herbicide in this crop. Dispersal of the seeds from resistant biotypes may occur due to spread by wind, animals, agricultural machinery or manure. This study examined the effect of ensiling, digestion by cattle and storage in slurry and farmyard manure on the germination and viability of the seeds of one susceptible and three resistant C. album populations. After 4 weeks in a maize silo, seed viability of C. album populations was reduced drastically to 0–5%. Incubation for 24 h in the rumen followed by a post‐ruminal digestion in vitro of intact seeds only resulted in a small reduction in viability in one C. album population. Storage in a slurry cellar for 16 weeks reduced the viability of intact seeds of the C. album populations to 25–60%. Only 0–1% of the seeds remained viable after storage in a farmyard manure heap for 4 weeks. An accelerated ageing experiment showed se...
... DepartmentAGROSELVITER, University of Turin, Italy; 3Research Centre for Fodder Crops and Dai... more ... DepartmentAGROSELVITER, University of Turin, Italy; 3Research Centre for Fodder Crops and Dairy Production, Agricultural Research Council, Lodi, Italy; marta. ... oils (5.0 mg/incubation) were incubated in vitro with rumen fluid collected from 2 non-lactating Holstein dairy cows ...
Hassim, H. A., Lourenço, M., Goh, Y. M., Baars, J. J. P. and Fievez, V. 2012. Rumen degradation o... more Hassim, H. A., Lourenço, M., Goh, Y. M., Baars, J. J. P. and Fievez, V. 2012. Rumen degradation of oil palm fronds is improved through pre-digestion with white rot fungi but not through supplementation with yeast or enzymes. Can. J. Anim. Sci. 92: 79–87. Rumen fermentation kinetics of oil palm fronds (OPF) supplemented or not with enzymes (Hemicell® or Allzyme SSF®) or yeasts (Levucell®SC or Yea-Sacc®) were studied through an in vitro gas production test (96 h) (exp. 1). In exp. 2, enzymes were supplemented to OPF pre-treated during 3 or 9 wk with either one of five white rot fungi strains. Yeasts and enzymes were tested both in active and inactive forms, which revealed the most appropriate set-up to distinguish between the rate of supplements as direct contributors to the fermentation substrate vs. stimulators of the fermentation of the basal substrate. In exp 1, addition of active and inactive Yea-Sacc® increased the apparently rumen degradable carbohydrates (ARDC) by 11%, whereas...
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