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- Dunkley, C.S.; Kim, W.K.; James, W.D.; Ellis, W.C.; McReynolds, J.L.; Kubena, L.F.; Nisbet, D.J.; Ricke, S.C.
- Journal of radioanalytical and nuclear chemistry 2008 v.276 no.1 pp. 35
- gastrointestinal transit, etc ; chickens; stable isotopes; hafnium; digestion; corn; alfalfa; digesta; Show all 8 Subjects
- ... A method has been developed for the study of passage rates and mean residence times (MRT) of test rations through the gastrointestinal tracts of layer hens. The use of rare earth elements as stable indigestible markers monitored by neutron activation analysis has been previously demonstrated in numerous species. In this study hafnium was used to mark corn and alfalfa rations as well as a combinati ...
- Hughes, R.J.
- British poultry science 2008 v.49 no.6 pp. 716-720
- gastrointestinal transit, etc ; feed grains; broiler chickens; xylanases; males; wheat; gender differences; digesta; dosage; feed rations; energy balance; metabolizable energy; feed supplements; broiler feeding; females; Show all 15 Subjects
- ... 1. This study tested the hypotheses that: (a) apparent metabolisable energy (AME) values and whole tract transit time (WTTT) were related, and that (b) the relationship between AME and WTTT differed between male and female Ross broiler chickens. 2. Enzyme products with xylanase activity were added to a basal diet to provide 4 dietary treatments comprising control (no enzyme), Avizyme 1300 (1 kg/to ...
- Oshita, T.; Sudo, K.; Nonaka, K.; Kume, S.; Ochiai, K.
- Livestock science 2008 v.113 no.2-3 pp. 243-250
- gastrointestinal transit, etc ; dairy cows; ingestion; eating habits; pastures; dry matter intake; rotational grazing; feces; digesta; particle size distribution; Holstein; rumen fluids; ad libitum feeding; mastication; feed rations; Show all 15 Subjects
- ... The objective of this study was to evaluate the effect of feeding regimen on chewing activity and ruminal passage of digesta in non-lactating cows fed pasture ad libitum. Six ruminally fistulated Holstein dry cows (mean±SD; parity=3.7±0.5, length of pregnancy=28±2 W, BW=692±75 kg) were assigned randomly to two dietary treatments using a crossover design; three cows were rotationally grazed pasture ...