1,299 research outputs found
Impact of WTO on CODEX Alimentarius and Its Implications for World Trade
International Relations/Trade,
Feeding Techniques To Increase Calf Growth In The First Two Months Of Life
End of project reportData from Cornell University and the University of Illinois in the USA suggested that average daily liveweight gains of 900 to 1000 g/calf/day could be achieved from birth to weaning provided the calf milk replacer (CMR) is formulated to meet the calfâs amino acid requirements for such a rate of gain. Their findings suggested a daily milk replacer DM allowance of 1250 to 1500 g/d with a crude protein content of 26 to 30%. A series of studies were undertaken, at ARINI with home born dairy calves and at Grange Beef Research Centre with purchased dairy calves, to determine the effect of increasing the daily milk replacer DM allowance and or increasing the crude protein content of the CMR on calf performance.The
main outcomes of these studies were
There was no growth or intake response in any of the studies to increasing the crude
protein content of the CMP from 23% to 28%.
Calf growth rates responded to increasing the dailymilk replacer allowance from 600
to 1200 g/day for both home bred and purchased calves. However, the effect was not
significant post-weaning in any of the studies.
In all of the studies (for both home reared and purchased calves) feeding a high level
of CMRdecreased concentrate DM intake. However, the calves concentrate intakes
were similar post-weaning.
The home bred calves with free access to the milk replacer feeders failed to consume
their 1200 g/day allowance. Calves offered 600 or 1200 g of CMR/day had average
consumption of 554 and 944 g/d, respectively, in the milk feeding period.
Feeding a high (1200 g/d) compared to a low level (600 g/d) CMRdiet for the first 56
days had no significant effect on carcass weight or carcass characteristics when
purchased male calves were slaughtered off an ad libitum concentrate diet after 388
days. The final carcass weights were 231 and 240 kg for the respective 600 and 1200
g/d CMR.
Reducing the fat content of the CMRfrom 18% to 12% did not have any effect on
concentrate intake or liveweight gain
Discovery of a Color-Selected Quasar at z=5.50
We present observations of RD J030117+002025, a quasar at z=5.50 discovered
from deep, multi-color, ground-based observations covering 74 square arcmin.
This is the most distant quasar or AGN currently known. The object was targeted
as an R-band dropout, with R(AB)>26.3 (3-sigma limit in a 3 arcsec diameter
region), I(AB)=23.8, and z(AB)=23.4. The Keck/LRIS spectrum shows broad
Lyman-alpha/NV emission and sharp absorption decrements from the
highly-redshifted hydrogen forests. The fractional continuum depression due to
the Lyman-alpha forest is D(A)=0.90. RD J030117+002025 is the least luminous,
high-redshift quasar known (M(B)~-22.7).Comment: 9 pages, 2 figures; to appear in the The Astrophysical Journal
Letter
Utilization of parallel processing in solving the inviscid form of the average-passage equation system for multistage turbomachinery
A procedure is outlined which utilizes parallel processing to solve the inviscid form of the average-passage equation system for multistage turbomachinery along with a description of its implementation in a FORTRAN computer code, MSTAGE. A scheme to reduce the central memory requirements of the program is also detailed. Both the multitasking and I/O routines referred to are specific to the Cray X-MP line of computers and its associated SSD (Solid-State Disk). Results are presented for a simulation of a two-stage rocket engine fuel pump turbine
Plausible responses to the threat of rapid sea-level rise for the Thames Estuary
This paper considers the perceptions and responses of selected stakeholders to a scenarion of rapid rise in sea-level due to the collapse of the West Antarctic ice sheet, which could produce a global rise in sea-level of 5 to 6 metres. Through a process of dialogue involving one-to one interviews and a one-day policy exercise, we addressed influences on decision-making when information is uncertain and our ability to plan, prepare for and implement effective ways of coping with this extreme scenario. Through these interactions we hoped to uncover plausible responses to the scenario and identify potential weaknesses in our current flood management approaches to dealing with such an occurrence. By undertaking this exploratory exercise we hoped to find out whether this was a feasible way to deal with such a low probability but high consequence scenario. It was the process of finding a solution that interested us rather than the technical merits of one solution over another. We were not intending to produce definitive set of recommendations on how to respond but to gain insights into the process of making a decision, specifically what influences it and what assumptions are made.Sea level rise, London
Information Systems and Healthcare XXXVII: When Your Employer Provides Your Personal Health RecordâExploring Employee Perceptions of an Employer-Sponsored PHR System
A growing number of employers provide electronic personal health records (PHRs) as a service to employees as part of a health benefit program. However, a variety of unique issues related to attitudes and adoption arise when a PHR is hosted by the employer, and little research has addressed this relationship. This article reports the findings from an exploratory study of factors that influence employee perceptions, concerns, and expectations related to an employerâsponsored PHR service, with data from 132 employees of a large U.S. corporation. Attitudes toward PHR systems and employee perceptions and concerns identified in prior research are evaluated. Despite studies suggesting significant demand for PHR products across the general public, especially those that are offered at no cost to the user, responses indicated unique barriers to use, as well as opportunities, for employer-sponsored PHRs. The future role of employers as sponsors of PHRs is discussed in light of obstacles and strategies to improve system use, and the need to help employees realize the potential value of employer-sponsored PHRs
Evidence for quantum confinement in the photoluminescence of porous Si and SiGe
We have used anodization techniques to process porous surface regions in p-type Czochralski Si and in p-type Si0.85Ge0.15 epitaxial layers grown by molecular beam epitaxy. The SiGe layers were unrelaxed before processing. We have observed strong near-infrared and visible light emission from both systems. Analysis of the radiative and nonradiative recombination processes indicate that the emission is consistent with the decay of excitons localized in structures of one or zero dimensions
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