Zobrazeno 1 - 10
of 10
pro vyhledávání: '"F. E. van Niekerk"'
Autor:
F E, van Niekerk, S W, Cloete, E W, Heine, G D, van der Merwe, A, Wellington, S S, du Plessis, D, Bekker
Publikováno v:
Journal of the South African Veterinary Association. 67(4)
The effect of selenium (Se) supplementation of ewes with blood Se concentrations ranging between 100-200 ng/ml on embryonic survival during the early post-mating period (days 15-35) was studied in 4 trials. In the 1st 2 trials 137 ewes were used in 1
Publikováno v:
Journal of the South African Veterinary Association. 66(1)
Liver and kidney copper (Cu) and selenium (Se) concentrations were studied over a 7-month period after parenteral supplementation using Cu heptonate and barium (Ba) selenate in 44 8-month-old South African (SA) Mutton Merino wethers. Responses in pla
An assessment of the toxicity of parenteral treatment with copper EDTA and copper heptonate in sheep
Publikováno v:
Journal of the South African Veterinary Association. 65(2)
The toxicity of 2 parenteral copper (Cu) supplements was investigated. Di-sodium copper ethylene diamino tetra acetate (Cu EDTA) and Cu heptonate were administered to sheep (n = 9) by a single subcutaneous injection at a concentration of 0,2, 1 and 2
Publikováno v:
Journal of the South African Veterinary Association. 65(2)
The copper (Cu) and selenium (Se) status of SA Mutton Merino ewes grazing kikuyu-ryegrass pastures was investigated by analysing blood and liver samples. The response of ewes to oral supplementation with Cu, Cobalt (Co) and Se as single elements, or
Publikováno v:
Journal of the South African Veterinary Association. 61(4)
Comprehensive blood typing (17 factors) and electrophoretic protein markers (haemoglobins, transferrins and albumins) were determined on S.A. Mutton Merino sheep (n = 275). The frequencies of these genetic markers were compared between ram lambs with
Publikováno v:
Journal of the South African Veterinary Association. 61(3)
The effect of age of the ewe and pregnancy on concentrations of plasma calcium, phosphorus and magnesium and its relationship to the bent-leg syndrome in lambs, were investigated. This study included Merino ewes (n = 74), Dohne Merino ewes (n = 127),
Publikováno v:
Cancer. 62:2635-2639
The current study tested the hypothesis that deficiencies of certain mineral elements are risk factors for esophageal cancer (EC). In rural blacks living in areas with moderate to high EC incidence rates in southern Africa, the whole blood selenium (
Publikováno v:
Journal of the South African Veterinary Association. 60(1)
Plasma calcium, phosphorus and magnesium concentrations were determined in ewes and their single and twin lambs from birth for 120 days in Merino, Dohne Merino and South African Mutton Merino sheep. Mineral concentrations as well as the plasma calciu
Autor:
F E, Van Niekerk, C H, Van Niekerk
Publikováno v:
Journal of the South African Veterinary Association. 60(1)
The macro- and microscopic changes of the testes caused by molybdenum as well as a molybdenum plus sulphate induced copper deficiency were investigated in S.A. Mutton Merino rams. Judged on testes measurements, the testes development of rams sufferin
Autor:
F E, Van Niekerk, C H, Van Niekerk
Publikováno v:
Journal of the South African Veterinary Association. 60(1)
The influence of molybdenum and molybdenum plus sulphate-induced copper deficiencies on semen quality and peripheral plasma testosterone concentrations in South African Mutton Merino rams was investigated. All animals received an identical ration, su