Comparison of systems for estimating protein allowances for dairy cows

Author(s):  
C.J. Waters ◽  
R.J. Dewhurst ◽  
A.J.F. Webster

The proposed Agricultural Research Council (ARC 1984) protein evaluation system for ruminants provides lower nitrogen allowances than any other. (National Research Council 1985; Alderman 1987). A U.K. Interdepartmental Working Party (IDWP) was set up to consider the ARC (1980) proposals and recommend a practical protein evaluation system for ruminants for use by the advisory services. Its provisional proposals have been reported by Webster (1987). This trial was set up to provide a practical evaluation of the two systems in a commercial dairy herd.Animals. Thirty-three Friesian cows (mean livewewight 590kg, mean previous milk yield 6120 kg), in early lactation were blocked according to (a) previous treatment, (b) number of previous lactations and (c) previous milk yield. The cows were randomly allocated within blocks to one of three dietary treatments.Treatments. Dietary nitrogen allowances were calculated, according to (1) ARC(1984) and (2) IDWP (Webster, 1987) except that the ARC (1984) concept of essential amino acid nitrogen was included in the IDWP calculations. The difference in nitrogen allowances between the two systems was so great as to warrant a third intermediate treatment (INT), calculated to provide allowances mid-way between the other two.

2006 ◽  
Vol 14 (6) ◽  
pp. 36-39
Author(s):  
Shu-You Li ◽  
Vinayak P. Dravid

Resource sharing has become an absolute necessity for modern scientific research because of the increasing expense and complexity of instruments, and the ever changing funding paradigm which often requires sharing of major instrumentation resource across multiple disciplines. Many universities and even large companies have set up centralized facilities to serve researchers from different departments, divisions and units to minimize expenses and maximizing usage.Just in the materials research area alone, it is estimated that there are more than 500 mid-size facilities existing nationwide, as reported in 2005 by the Committee on Smaller Facilities of National Research Council. Resource sharing is also common in large research groups, between Principal Investigators, as well as in corporate/industrial laboratories.


1973 ◽  
Vol 27 (4) ◽  
pp. 308-319 ◽  
Author(s):  
Z. Jaksic

Under the influence of ideas from control and communication theory, new trends have developed in the design of photogrammetric data-processing systems. In this paper a number of concepts applied to the design of such systems are discussed, with emphasis on the digital man-machine systems and system components. The main characteristics of contemporary photogrammetric systems are outlined in regard to both their hardware and software, including some remarks on automation and orthophototechniques. The general descriptions are supported by examples from two systems: one predominantly digital and the other predominantly analog. These examples concern the instrumental developments in the Photogrammetric Research Laboratories of the National Research Council of Canada.


1933 ◽  
Vol 8 (1) ◽  
pp. 15-28
Author(s):  
D. C. Rose

This report contains the results from one of the three stations set up by the National Research Council of Canada to take observations on radio reflections from the ionized layers in the upper atmosphere during the total solar eclipse of August 31, 1932. The station concerned was located at Kingston, Ontario, and was approximately under the centre of totality for the upper or Appleton layer. Hence observations at this station were limited to the upper layer. The results from the other two stations at Corner Brook, Newfoundland, and at Vankleek Hill, Ontario, are reported in the paper immediately preceding (8).The method was that developed by Breit and Tuve, in which a short pulse is transmitted, the reflection being received and its time delay recorded by means of a cathode ray oscillograph.The results indicate that the ionization of the upper layer is caused by radiation (presumably ultra-violet light) from the sun. Whether or not this is the sole cause is uncertain because of the time lag in recombination of ions in the layer. A reduction in ionization of over 30% was noted.A magnetic storm which occurred a few days before the eclipse made the results more difficult to interpret but gave some information of the effect of such a storm on the upper layer. It appeared to cause considerable instability in the layer and a somewhat lower ion content.


Author(s):  
Pauline A. Lee ◽  
K.G. Mitchell

The Agricultural Research Council (1981) states the energy requiremnets for pregnant sows in terms of amounts needed per day to ensure specific net pregnancy weight gains for differing weights at service (Table 1.). An experiment was set up primarily to test the validity of these recommendations which were derived by factorial calculations and secondly to examine the relationship between condition (P2 measurement) and weight changes over the reproductive cycle.


Author(s):  
Enrico Isacco Rambaldi

The Cardano edition from the Consiglio nazionale delle ricerche has been a wasted opportunity. It shows the lack of an accurate systematic approach that led to the Cardano Project ending in fialure. The project had been fostered by the “National research council Center for the study of philosophical thought in the 16th and 17th centuries in relation to scientific questions”, set up by Mario Dal Pra. The aim had been for it to prepare a critical edition of the works of the doctor, mathematician, astrologist and philosopher Girolamo Cardano (Pavia 1501-Rome 1576).


2021 ◽  
Vol 10 (2) ◽  
pp. 56
Author(s):  
Bella Dong

Journal of Food Research wishes to acknowledge the following individuals for their assistance with peer review of manuscripts for this issue. Their help and contributions in maintaining the quality of the journal are greatly appreciated. Journal of Food Research is recruiting reviewers for the journal. If you are interested in becoming a reviewer, we welcome you to join us. Please contact us for the application form at: [email protected] Reviewers for Volume 10, Number 2 Ammar Eltayeb Ali Hassan, University of Tromsø, Norway Bernardo Pace, Institute of Science of Food Production (ISPA), National Research Council (CNR), Italy Cheryl Rosita Rock, California State University, United States Diego A. Moreno-Fernández, CEBAS-CSIC, Spain Elke Rauscher-Gabernig, Austrian Agency for Health and Food Safety, Austria Jose Maria Zubeldia, Clinical Regulatory Consultant for the HIV & Hepatitis C initiative at Drugs for Neglected Diseases Initiative, Spain Leonardo Martín Pérez, Pontifical Catholic University of Argentina, Argentina Marco Iammarino, Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Italy Marta Mesias, Spanish National Research Council, Spain Mohd Nazrul Hisham Daud, Malaysian Agricultural Research & Development Institute, Malaysia Olutosin Otekunrin, Federal University of Agriculture, Nigeria Rozilaine A. P. G. Faria, Federal Institute of Science, Education and Technology of Mato Grosso, Brazil Tanima Bhattacharya, Novel Global Community Education Foundation, Australia Teodora E. Coldea, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Romania Xingjun Li, Academy of the National Food and Strategic Reserves Administration, China


Vaccines ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 165 ◽  
Author(s):  
José de la Fuente ◽  
Marinela Contreras ◽  
Paul Kasaija ◽  
Christian Gortazar ◽  
Jose Ruiz-Fons ◽  
...  

A meeting and course supported by the Vice-Presidency for International Affairs of the Spanish National Research Council (CSIC) and the National Agricultural Research Organization of Uganda (NARO) were held at the National Livestock Resources Research Institute (NaLIRRI) in Nakyesasa, Wakiso, Uganda on September 2–9, 2019. The activities were conducted within the collaboration program between the Institute of Game and Wildlife Research (IREC, CSIC-UCLM-JCCM, Spain) and NARO for the development of vaccines and other interventions for the control of cattle ticks in Uganda.


1980 ◽  
Vol 44 (1) ◽  
pp. 53-60 ◽  
Author(s):  
P. J. Nuoranne ◽  
R. P. Raunio ◽  
P. Saukko ◽  
H. Karppanen

1. Pigs were fed on semi-purified food. The magnesium content of the experimental diet was 1·0 and that of the control diet 1·9 g/kg.2. In the low-Mg group serum triglycerides and blood lactate values were increased and base excess and standard bicarbonate values were decreased, indicating metabolic acidosis.3. A significant positive dependence was found between blood pH and serum Mg:Ca value as well as between blood pH and serum Mg, and also between body temperature and blood lactate values in the low-Mg group. None of these dependences was significant in the control group with magnesium acetate supplementation in the food.4. No specific histopathological changes were found in heart, liver or kidney of the experimental animals.5. The results indicate that an increase in serum triglycerides does not need to depend on the amount or quality of food fat.6. The present study shows that, in pigs, a low-Mg diet may cause metabolic disturbances in instances when the food Mg content is distinctly higher than the normal values recommended by the (UK) Agricultural Research Council (1966) and (US) National Research Council (1968).


1980 ◽  
Vol 60 (4) ◽  
pp. 991-1002 ◽  
Author(s):  
R. A. DRYSDALE ◽  
T. J. DEVLIN ◽  
L. E. LILLIE ◽  
W. K. FLETCHER ◽  
K. W. CLARK

Concentrations of Mo, Cu, Zn, Mn, Fe, N, Ca, P, Mg and K were determined in native and introduced grasses and legume forages from throughout northwestern Manitoba. Nutrient concentrations were compared with minimum requirements of cattle suggested by the Agricultural Research Council and the National Academy of Sciences–National Research Council. Differences in Mo concentrations were noted in forages between two geologic subareas within the study area. Cu and Mo concentrations suggested potentials for primary Cu deficiency in grasses throughout the region, and for Mo-induced Cu deficiency with grasses west of the Swan River formation and with legumes from all areas within the region. Throughout the study area, concentrations of Zn and Mn were found to be at deficient levels while those of Fe and Ca were found to be at adequate to excessive levels for cattel production. N and P concentrations in all forages were borderline to adequate, while Mg and K concentrations of grass forages were deficient to borderline with relation to the requirement of cattle.


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