scholarly journals The susceptibility of suckling lambs to zinc toxicity

1977 ◽  
Vol 38 (1) ◽  
pp. 153-156 ◽  
Author(s):  
N. T. Davies ◽  
H. S. Soliman ◽  
W. Corrigall ◽  
A. Flett
Keyword(s):  
Dry Matter ◽  
Renal Damage ◽  
Zinc Toxicity ◽  
List Type ◽  
Type Number ◽  
Milk Diet ◽  
Poor Growth ◽  
Zn Content ◽  
Milk Substitute

1.Suckling lambs maintained for 4 weeks on a milk-substitute diet containing 407 g Toprina yeast/kg dry matter of diet exhibited poor growth, low appetite and extensive renal damage.2.The batch of yeast used contained 2065 mg zinc/kg.3.The kidneys of lambs offered a milk diet supplemented with the same Zn content as the yeast-fed diet (32.1 mg Zn/1000 kJ) were similarly affected.

Effect of Level of Inclusion of Antigen-Fee Soya Protein Concentrate in a Whey-Based Milk Substitute for Calves

1984 ◽  
Vol 1984 ◽  
pp. 138-138
Author(s):  
I J F Stobo ◽  
P Ganderton ◽  
M W Perfitt
Keyword(s):  
G Protein ◽  
Dietary Protein ◽  
Soya Protein ◽  
Protein Diet ◽  
List Type ◽  
Protein Concentrate ◽  
Type Number ◽  
Bull Calves ◽  
Soya Protein Concentrate ◽  
Milk Substitute

The objectives of the experiment were:1.To assess the suitability of antigen-free soya protein concentrate (SPC) and whey products as major ingredients and the sole protein source in milk substitute diets for calves.2.To compare the effects of inclusion rates of 0, 350 and 700 g protein from SPC/kg dietary protein.3.To investigate the suitability of introducing these diets to calves at 2 or at 16 days of age.A fat-filled whey based milk substitute (diet WP1) was compared with similar diets in which SPC provided 350 g/kg protein (diet SK1J or 700 g/kg protein (diet SK2). Thirty-six Friesian bull calves were given one of these three diets reconstituted in water (1 powder:6 water w/w), offered at 38°C by bucket to appetite in two feeds daily, either at 2 days of age or after a 14-day period in which they were given a skim-based milk substitute (diet WP4).

The effects of various forms of gastrointestinal cannulation on digestive measurements in sheep

1977 ◽  
Vol 38 (1) ◽  
pp. 65-71 ◽  
Author(s):  
J. C. MacRae ◽  
S. Wilson
Keyword(s):  
Liquid Phase ◽  
Dry Matter ◽  
List Type ◽  
Type Number ◽  
Digestive Physiology ◽  
Dry Matter Digestibility ◽  
Wool Growth ◽  
Serum Aspartate Aminotransferase ◽  
Medium Quality ◽  
Voluntary Food Intake

1.There was little difference in digestive (voluntary food intake, dry matter digestibility and nitrogen balance) and blood measurements (venous concentrations of corticosteroids, serum aspartate aminotransferase (EC2.6.1.1), protein-bound iodine, urea and glucose) of intact sheep (eight animals) and of sheep prepared with rumen cannulas (sixteen animals) and subsequently with either simple 'T-shaped' (eight animals) or re-entrant cannulas (eight animals) at the duodenum and ileum, when fedad lib.a chopped, medium-quality-hay ration.2.Wool growth rates of the intact sheep were similar to those in sheep with rumen cannulas and with rumen cannulas plus simple 'T-shaped' cannulas, but higher (P < 0-01) than those with rumen cannulas plus re-entrant cannulas.3.When the sheep were subsequently given a restricted intake (800 g/d) of dried grass, retention times of solid- and liquid-phase digesta markers in the rumen and caecum were similar in all sheep.4.The use of the different preparations in digestive physiology studies is discussed.

The effect of sugar beet pulp and rolled barley as absorbents on effluent production, silage fermentation and animal performance

1991 ◽  
Vol 1991 ◽  
pp. 91-91 ◽  
Author(s):  
P N Johnson
Keyword(s):  
Sugar Beet ◽  
Dry Matter ◽  
Sugar Beet Pulp ◽  
List Type ◽  
Type Number ◽  
Grass Silage ◽  
Fresh Material ◽  
Silage Fermentation ◽  
Beet Pulp ◽  
Feeding Value

Silage effluent represents a potential pollutant and a loss of ensiled nutrients. An absorbent provides the possibility of absorbing effluent, aiding fermentation and increasing the feeding value of the silage. Sugar beet pulp (SBP) nuts and rolled barley (RB) were evaluated as absorbents with direct cut grass silage.Perennial ryegrass swards of 222 g/kg average dry matter were direct cut between 10 and 12 July 1989. Grass was ensiled with the following rates of absorbent per tonne of fresh material:1.20 kg SBP (S20).2.40 kg SBP (S40).3.40 kg RB (B40).4.Untreated (U).Production of silage effluent was measured with a tippler mechanism attached to an electronic logger and recorded daily until 22 September. The silages were individually fed through Calan Broadbent doors to 48 x 12 month old Friesian steers between 24 October and 19 December.

scholarly journals Dry matter and nitrogen in the duodenal contents of growing pigs: a discrepancy explained

1977 ◽  
Vol 38 (1) ◽  
pp. 145-147 ◽  
Author(s):  
A. G. Low ◽  
Teresa Zebrowska
Keyword(s):  
Automatic System ◽  
Dry Matter ◽  
Causative Factor ◽  
Growing Pigs ◽  
List Type ◽  
Type Number ◽  
Collection System ◽  
Manual Method ◽  
Automatic Collection

1.Discrepancies between the results obtained from experiments on pigs with re-entrant duodenal cannulas have been investigated with reference to diet, cannula site and collection procedure.2.The results obtained from a sealed automatic collection system were different from those obtained from an open manual method and it was concluded that the maintenance of gut intra-luminal pressure in the automatic system was the causative factor.

scholarly journals Effects of different levels of zinc on growth and yield of red amaranth (Amaranthus sp.) and rice (Oryza sativa, Variety-BR49)

1970 ◽  
Vol 1 (1) ◽  
pp. 79-91 ◽  
Author(s):  
NJ Malik ◽  
AS Chamon ◽  
MN Mondol ◽  
SF Elahi ◽  
SMA Faiz
Keyword(s):  
Oryza Sativa ◽  
Dry Matter ◽  
Growth And Yield ◽  
Dry Matter Production ◽  
Zinc Toxicity ◽  
Total N ◽  
Matter Production ◽  
Zn Content ◽  
Silty Loam ◽  
Zinc Levels

Two pot experiments were conducted at the Dept. of Soil, Water and Environment, University of Dhaka to examine the effects of Zn on red amaranth (Amaranthus sp.) and rice (Oryza sativa). The soil collected from Bhaluka, Mymensingh (Chandra series), had the following general characteristics; pH 6.0, E.C 134 μS cm-1, organic matter 2.20%, organic carbon 1.27%, total N, P, K 0.024, O.07 and 0.05 % respectively. The total Zn content was 20 ppm and the texture was silty loam. Four Zn levels were maintained by treating the experimental soils with 0, 200, 300 and 400 mg Zn/kg soil. Roots & shoots of red amaranth and rice were collected after 45 and 90 days of sowing respectively. A significant impact of zinc was observed on growth and yield of red amaranth and rice. The concentration of zinc increased with increasing zinc treatment in red amaranth and rice roots, shoots and grain. The length of roots and shoots, the fresh and dry matter production  decreased with increasing zinc levels for red amaranth. In case of Rice the length of roots, shoots and spikelets increased with increasing zinc levels and the highest was observed at 200 ppm Zn. The fresh and dry matter production at first decreased at 200 ppm Zn but increased at 300 and 400 ppm Zn for Rice. The results showed that zinc influenced the growth and yield of red amaranth and rice. Keywords: Zinc; Toxicity; Treatments; Yield; Uptake; Heavy metal.DOI: 10.3329/jbayr.v1i1.6836Journal of Bangladesh Association of Young Researchers Vol.1(1) 2011 pp.79-91

Solar Corona Investigation by the Coronal Line Photometer at Lomnický Peak

1994 ◽  
Vol 144 ◽  
pp. 431-434
Author(s):  
M. Minarovjech ◽  
M. Rybanský
Keyword(s):  
Solar Corona ◽  
Time Resolution ◽  
Active Regions ◽  
High Time ◽  
High Time Resolution ◽  
List Type ◽  
Type Number ◽  
Coronal Line ◽  
Global Cycle

AbstractThis paper deals with a possibility to use the ground-based method of observation in order to solve basic problems connected with the solar corona research. Namely:1.heating of the solar corona2.course of the global cycle in the corona3.rotation of the solar corona and development of active regions.There is stressed a possibility of high-time resolution of the coronal line photometer at Lomnický Peak coronal station, and use of the latter to obtain crucial observations.

The LDE-Type Flare Occurrence (1969-1993)

1994 ◽  
Vol 144 ◽  
pp. 279-282
Author(s):  
A. Antalová
Keyword(s):  
Time Series ◽  
Fourier Analysis ◽  
Sunspot Cycle ◽  
List Type ◽  
Type Number ◽  
Solar Cycles ◽  
Type Iv ◽  
Long Duration ◽  
Cycle Maximum ◽  
Flare Index

AbstractThe occurrence of LDE-type flares in the last three cycles has been investigated. The Fourier analysis spectrum was calculated for the time series of the LDE-type flare occurrence during the 20-th, the 21-st and the rising part of the 22-nd cycle. LDE-type flares (Long Duration Events in SXR) are associated with the interplanetary protons (SEP and STIP as well), energized coronal archs and radio type IV emission. Generally, in all the cycles considered, LDE-type flares mainly originated during a 6-year interval of the respective cycle (2 years before and 4 years after the sunspot cycle maximum). The following significant periodicities were found:• in the 20-th cycle: 1.4, 2.1, 2.9, 4.0, 10.7 and 54.2 of month,• in the 21-st cycle: 1.2, 1.6, 2.8, 4.9, 7.8 and 44.5 of month,• in the 22-nd cycle, till March 1992: 1.4, 1.8, 2.4, 7.2, 8.7, 11.8 and 29.1 of month,• in all interval (1969-1992):a)the longer periodicities: 232.1, 121.1 (the dominant at 10.1 of year), 80.7, 61.9 and 25.6 of month,b)the shorter periodicities: 4.7, 5.0, 6.8, 7.9, 9.1, 15.8 and 20.4 of month.Fourier analysis of the LDE-type flare index (FI) yields significant peaks at 2.3 - 2.9 months and 4.2 - 4.9 months. These short periodicities correspond remarkably in the all three last solar cycles. The larger periodicities are different in respective cycles.

Discussion following the presentation by F. Deubner

1977 ◽  
Vol 36 ◽  
pp. 69-74
Keyword(s):  
List Type ◽  
The Sun ◽  
Type Number ◽  
Harmonic Motion ◽  
Locally Excited ◽  
Long Period ◽  
Coherent Wave ◽  
Short Period ◽  
Global Modes

The discussion was separated into 3 different topics according to the separation made by the reviewer between the different periods of waves observed in the sun :1) global modes (long period oscillations) with predominantly radial harmonic motion.2) modes with large coherent - wave systems but not necessarily global excitation (300 s oscillation).3) locally excited - short period waves.

Prominences and Solar Activity

1979 ◽  
Vol 44 ◽  
pp. 357-372
Author(s):  
Z. Švestka
Keyword(s):  
Solar Activity ◽  
Solar Cycle ◽  
List Type ◽  
Type Number ◽  
Flare Loops ◽  
Filament Activation

The following subjects were discussed:(1)Filament activation(2)Post-flare loops.(3)Surges and sprays.(4)Coronal transients.(5)Disk vs. limb observations.(6)Solar cycle variations of prominence occurrence.(7)Active prominences patrol service.Of all these items, (1) and (2) were discussed in most detail and we also pay most attention to them in this report. Items (3) and (4) did not bring anything new when compared with the earlier invited presentations given by RUST and ZIRIN and therefore, we omit them.

A New System For Optomanual Semiautomatic Quantitative Image Analysis

1977 ◽  
Vol 35 ◽  
pp. 210-211
Author(s):  
H.P. Rohr
Keyword(s):  
Image Analysis ◽  
Volume Density ◽  
List Type ◽  
Distribution Analysis ◽  
Type Number ◽  
Point Counting ◽  
Human Eye ◽  
Quantitative Image ◽  
Point Density ◽  
Electronic Counting

Today, in image analysis the broadest possible rationalization and economization have become desirable. Basically, there are two approaches for image analysis: The image analysis through the so-called scanning methods which are usually performed without the human eye and the systems of optical semiautomatic analysis completely relying on the human eye.The new MOP AM 01 opto-manual system (fig.) represents one of the very promising approaches in this field. The instrument consists of an electronic counting and storing unit, which incorporates a microprocessor and a keyboard for choice of measuring parameters, well designed for easy use.Using the MOP AM 01 there are three possibilities of image analysis:the manual point counting,the opto-manual point counting andthe measurement of absolute areas and/or length (size distribution analysis included).To determine a point density for the calculation of the corresponding volume density the intercepts lying within the structure are scanned with the light pen.

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