Characterization of Mineral Element Profiles in Animal Waste and Tissues from Cattle Fed Waste. II. Steers Fed Cattle Feedlot Waste

1985 ◽  
Vol 61 (3) ◽  
pp. 682-691 ◽  
Author(s):  
T. W. Westing ◽  
J. P. Fontenot ◽  
K. E. Webb
1985 ◽  
Vol 61 (3) ◽  
pp. 670-681 ◽  
Author(s):  
T. W. Westing ◽  
J. P. Fontenot ◽  
W. H. McClure ◽  
R. F. Kelly ◽  
K. E. Webb

Livestock management practices have evolved considerably in the E. E. C. during the last two decades. The development of intensive confined rearing without using litter results in the production of vast quantities of animal waste slurries, which create serious disposal problems. Yet these wastes possess a fertilizing value that should be used as much as possible to replace increasingly expensive chemical fertilizers. The Commission of the European Communities sponsored a coordinated research programme on livestock effluents to assess the levels of fertilizing elements in slurries and to establish mathematical models aimed at predicting environmental effects as well as specifying the economic aspects of the land spreading of slurries, and to enable livestock production management to be included in the context of planning and regional policies. The main results obtained on the characterization of slurry and on its use for arable crops, grassland and forage crops are presented, together with some recommendations for administrative action.


2009 ◽  
Vol 43 (38) ◽  
pp. 6091-6099 ◽  
Author(s):  
Ralf M. Staebler ◽  
Sean M. McGinn ◽  
Brian P. Crenna ◽  
Thomas K. Flesch ◽  
Katherine L. Hayden ◽  
...  

Planta Medica ◽  
1978 ◽  
Vol 33 (04) ◽  
pp. 377-378 ◽  
Author(s):  
J. Templeton ◽  
R. Audette ◽  
F. Zunza ◽  
H. Godavari ◽  
E. Waygood

Author(s):  
B. L. Soloff ◽  
T. A. Rado

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.


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