Cobalt deficiency in illthriven lambs

2018 ◽  
Vol 182 (3) ◽  
pp. 71-74
Keyword(s):  
Cobalt Deficiency

Inflammation, Oxidative Stress and Cobalt Deficiency in Acute Childhood Leukemia

2019 ◽  
Vol 4 (1) ◽  
Author(s):  
Moses O Akiibinu ◽  
Bashiru S Oseni ◽  
Adekunle A Adesiyan ◽  
Susanah O Akiibinu ◽  
John I Anetor
Keyword(s):  
Oxidative Stress ◽  
Childhood Leukemia ◽  
Cobalt Deficiency

Effects of cobalt deficiency in the pregnant ewe on neonatal lamb survival

1992 ◽  
Vol 15 ◽  
pp. 169-171 ◽  
Author(s):  
G. E. J. Fisher ◽  
A. MacPherson
Keyword(s):  
Reproductive Performance ◽  
Dry Matter ◽  
Methylmalonic Acid ◽  
Milk Powder ◽  
Vitamin B ◽  
Deficient Diet ◽  
Cobalt Deficiency ◽  
Acid Status ◽  
Pregnant Ewe ◽  
Skimmed Milk Powder

It has been suggested (Mills, 1981) that there was a lack of research on the effects of cobalt (Co) deficiency on the reproductive performance of sheep. Duncan, Morrison and Garton (1981) reported that clinically Co-deficient ewes produced fewer lambs with a higher incidence of stillbirths and neonatal mortalities than Co-sufficient animals. Garton, Duncan and Fell (1981) related these findings to the vitamin B12 and methylmalonic acid status of dams. However, their investigations used few animals and were therefore inconclusive. The objectives of this work were to investigate the effects of subclinical Co deficiency in pregnant hill sheep on reproductive performance and neonatal lamb viability.Experiment 1 (1985/86) comprised 60 Scottish Blackface × Swaledale ewes, while experiment 2 (1986/87) included 30 of these animals plus 30 pure Scottish Blackface sheep. In both experiments the ewes were housed and bedded on sawdust and a Co-deficient diet of timothy hay, micronized maize, maize gluten, dibasic calcium phosphate and sodium chloride was offered. Skimmed milk powder was introduced to the diet during lactation. The Co content of the diet was 0.06 mg Co per kg dry matter.

scholarly journals Cobalt Deficiency in Cattle in the North Eastern Region of Wisconsin

1945 ◽  
Vol 28 (4) ◽  
pp. 291-296 ◽  
Author(s):  
R.P. Geyer ◽  
I.W. Rupel ◽  
E.B. Hart
Keyword(s):  
Eastern Region ◽  
The North ◽  
North Eastern ◽  
Cobalt Deficiency

Effect of Cobalt Deficiency on the Immune Function of Ruminants

1988 ◽  
pp. 397-398 ◽  
Author(s):  
Allan MacPherson ◽  
George Fisher ◽  
Jessie E. Paterson
Keyword(s):  
Immune Function ◽  
Cobalt Deficiency

Cobalt Deficiency in Sheep

1981 ◽  
pp. 386-389 ◽  
Author(s):  
G. J. Judson ◽  
R. J. Hannam ◽  
T. H. Benson ◽  
D. J. Reuter
Keyword(s):  
Cobalt Deficiency

The Effect of Cobalt Deficiency in the Pregnant Ewe on Lamb Viability

1988 ◽  
Vol 1988 ◽  
pp. 27-27
Author(s):  
G.E.J. Fisher ◽  
A. MacPherson
Keyword(s):  
Methylmalonic Acid ◽  
Clinical Symptoms ◽  
Post Partum ◽  
Acquired Immunity ◽  
Vitamin B ◽  
Treatment Groups ◽  
Turbidity Test ◽  
Term Trial ◽  
Cobalt Deficiency ◽  
Pregnant Ewe

Experiments were designed to investigate the effect of sub-clinical cobalt deficiency in pregnant hill sheep, on lamb viability. This form of the deficiency is not characterised by clinical symptoms. The disease is therefore difficult to detect, and may be of economic importance to farms on land of marginal cobalt status.In each of two trials, both with sixty Scottish Blackface x Swaledale ewes, animals were randomly assigned to three treatment groups: A. Cobalt-deficient intake throughout pregnancy; B. Initially cobalt-sufficient intake, but deficient from mid-pregnancy (Trial 1) or initially cobalt-deficient intake, but repleted from mid-term (Trial 2); C. Cobalt-sufficient intake throughout pregnancy. A cobalt-deficient ration (<0.06 mg Co/kg DM) of Timothy hay, micronised maize and maize gluten, was fed from tupping in Trial 1, and from two months before tupping in Trial 2. Treated animals received a weekly oral dose of 0.7 mg Co/head.Vitamin B12 (microbiological and radio-immuno assays) and methylmalonic acid (capillary gas chromatography) were analysed in ewe and lamb sera, as indicators of cobalt status. Levels of passively acquired immunity were measured by analysis of lamb sera, sampled at two and four weeks post-partum, for immunoglobulin G (IgG) and by the zinc sulphate turbidity test (ZSTT).

Effect of cobalt supplementation on performance of Mehraban lambs

2009 ◽  
Vol 2009 ◽  
pp. 167-167
Author(s):  
H Aliarabi ◽  
S Bisheh Sari ◽  
M M Tabatabaei ◽  
A Ahmadi ◽  
P Zamani ◽  
...  
Keyword(s):  
Protein Metabolism ◽  
Physiological Effect ◽  
The Body ◽  
Methionine Synthase ◽  
Vitamin B ◽  
Deficient Animal ◽  
Metabolism Enzymes ◽  
Cobalt Deficiency ◽  
Loss Of Appetite ◽  
Micro Organisms

A major physiological effect of cobalt deficiency is loss of appetite (Smith, 1997). Rumen micro-organisms require cobalt for the synthesis of Vitamin B12, which acts as a cofactor for protein and energy metabolism enzymes, namely methylmalonyl coenzyme A mutase and methionine synthase (Kennedy et, al. 1992). Cobalt deficiency, therefore, impairs the energy and protein metabolism and thus growth and development of the deficient animal, which can be defined as changes in the weight, shape and size of the body. Sheep tend to be extremely susceptible to Co deficiency and develop a normocytic and normochromic anaemia, anorexia, reduced weight gains and photosensitivity (Vellema et al., 1996). The present study was designed to evaluate the effects of dietary Co level on performance of Mehraban male lambs.

A Study of Cobalt Deficiency in New Hampshire with Sheep

1948 ◽  
Vol 7 (1) ◽  
pp. 16-25 ◽  
Author(s):  
H. A. Keener ◽  
G. P. Percival ◽  
K. S. Morrow
Keyword(s):  
New Hampshire ◽  
Cobalt Deficiency

Detection of cobalt deficiency in lactating heifers and their calves

1988 ◽  
Vol 110 (3) ◽  
pp. 465-470 ◽  
Author(s):  
M. F. Quirk ◽  
B. W. Norton
Keyword(s):  
Milk Production ◽  
Serum Vitamin ◽  
Live Weight ◽  
Experimental Period ◽  
Reliable Indicator ◽  
Vitamin B ◽  
Lower Growth ◽  
Poor Growth ◽  
Calf Growth ◽  
Cobalt Deficiency

SummaryResponses in live weight, milk production and calf growth to cobalt supplementation of groups of three and four pregnant heifers were measured to assess the value of serum vitamin B12 concentrations and the urinary concentrations of methylmalonic acid (MMA) and formiminoglutamic acid (FIGLU) for the detection of cobalt deficiency in cattle.The administration of cobalt bullets to pregnant heifers, grazing pastures containing between 0·03 and 0·05 mg/kg cobalt, had no effect on either their live-weight change or milk production, or on the birth weight of their calves. MMA and FIGLU concentrations in the urine of unsupplemented heifers were low for the majority of the experimental period, although the concentrations of vitamin B12 in their serum (< 100 pg/ml) were in the range usually considered indicative of cobalt deficiency.Calves from unsupplemented heifers had lower growth rates during the first 3 months of life and this was associated with intakes of 0·24–0·46 μg/day of vitamin B12 from milk, only 1–3% of those received by calves from supplemented heifers. Poor growth was associated with high urinary FIGLU concentrations, which increased from 500 to 2000 μmol/l between 1 and 3 months of age but decreased to less than 100 μmol/l between 3 and 4·5 months of age. Urinary FIGLU was a more reliable indicator of vitamin B12 deficiency in suckled calves than was urinary MMA, elevated levels of which were observed only at 3 months of age. The concentration of vitamin B12 in the serum of calves from unsupplemented heifers was consistently less than 100 pg/ml, but was not a reliable indicator of their functional vitamin B12 status, as judged by urinary concentrations of FIGLU and/or MMA.

COBALT DEFICIENCY IN LAMBS

2009 ◽  
Vol 10 (6) ◽  
pp. 177-178
Keyword(s):  
Cobalt Deficiency
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