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1949 Onderstepoort Journal of Veterinary Science and Animal Industry, Volume 22, Number 2, 1949
Contentes Pages: Onderstepoort Journal of Veterinary Research, Vol ??, 19??
CONTENTS |
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Volume 22: Number 2
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Section I: Virus Diseases
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Investigation
into immunization of cattle against rinderpest in Tanganyika territory
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Mitchell, DT & Mansvelt, PR |
231 |
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Section II: Parasitology
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Zoological
survey of the Union of South Africa : Tick survey. Part II. Distribution
of Boophilus (Palpoboophilus) decoloratus, the blue tick
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Theiler, G |
255 |
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Zoological
survey of the Union of South Africa : Tick survey. Part III. Distribution
of Rhipicephalus appendiculatus, the brown tick
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Theiler, G |
269 |
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D.D.T.
for the protection of sheep against blowfly strike
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Du Toit, R & Goosen, PJ |
285 |
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Section III: Toxicology
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The
alkaloids of Senecio bupleuroides D.C. |
Sapiro, ML |
291 |
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The
alkaloids of Senecio paucicalyculatus Platt
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Pretorius, TP |
297 |
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A
chemical investigation of the constituents of Nicotiana glauca R. Grah.
(Solanaceae) (Wild tobacco)
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Rindl, M & Sapiro, ML |
301 |
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The
cardiac glycoside from Urginea rubella Baker. Part. I. Isolation and properties
of rubellin
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Louw, PGJ |
313 |
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Lantadene
A. The active principle of Lantana camara L. Part III. Pyrolytic distillation
of lantadene A
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Louw, PGJ |
321 |
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Lantadene
A. The active principle of Lantana camara L. Part IV. Dehydrogenation of
Lantadene A and Lantadene B
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Louw, PGJ |
329 |
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Section IV: Physiology
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Studies
on the water requirements of farm animals in South Africa. I. The effect
of intermittent watering on Merino sheep
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Clark, R & Quin, JI |
335 |
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Studies
on the water requirements of farm animals in South Africa. II. The relation
between water consumption, food consumption and atmospheric temperature
as studied on merino sheep
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Clark, R & Quin, JI |
345 |
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Studies
on the alimentary tract of the merino sheep in South Africa. XVI. The fate
of nitrate in ruminal ingesta as studied in vitro
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Sapiro, ML, Hoflund, S, Clark, R & Quin, JI |
357 |
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The
carbohydrate content of lucerne under different meteorological and physiological
conditions
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Henrici, M |
373 |
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Section V: Reproduction
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The
sperm picture of rams of different breeds as an indication of their fertility.
II. The rate of sperm travel in the genital tract of the ewe
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Starke, NC |
415 |
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Author
index
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526 |
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Subject
index
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528 |
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Recent Submissions
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Starke, N.C.; De Kock, G.v.d.W.
(Pretoria : The Government Printer, 1949)
Part I. 1. The sperm picture of rams of different breeds has been studied.
2. Semen was collected by Gunn’s electrical method.
3. The Ronderib Afrikaners were superior to the Merinos in semen
characteristics . This may ...
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Anonymous; De Kock, G.v.d.W.
(Pretoria : The Government Printer, 1949)
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Anonymous; De Kock, G.v.d.W.
(Pretoria : The Government Printer, 1949)
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Henrici, Marguerite; De Kock, G.v.d.W.
(Pretoria : The Government Printer, 1949)
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Sapiro, M.L.; Hoflund, S.; Clark, R.; Quin, J.I.; De Kock, G.v.d.W.
(Pretoria : The Government Printer, 1949)
1. In vitro experiments have been conducted on the disappearance of
potassium nitrate in ruminal ingesta from sheep on different diets.
2. Nitrate disappears more rapidly from ingesta of lucerne-fed sheep
than from that ...
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Clark, R.; Quin, J.I.; De Kock, G.v.d.W.
(Pretoria : The Government Printer, 1949)
1. The consumption of lucerne hay and water by merino sheep has
been recorded in two separate but identically concluded experiments under
the following conditions:
(i) Both food and water given ad lib.
(ii) Water ...
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Clark, R.; Quin, J.I.; De Kock, G.v.d.W.
(Pretoria : The Government Printer, 1949)
(1) On a ration of poor quality grass hay sheep were found to maintain
their normal intake of water when allowed to drink for one hour only every
second clay.
(2) When given water at 72 and 96 hour intervals the total ...
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Louw, P.G.J.; De Kock, G.v.d.W.
(Pretoria : The Government Printer, 1949)
1. Dehydrogenation of Lantadene A with selenium yielded sapotalene
and 1, 2, 6-trimethylphenanthrene, along with a C₁₇H₁₆O compound.
2. Dehydrogenation of Lantadene A-resin and Lantadene B similarly
yielded sapotalene ...
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Louw, P.G.J.; De Kock, G.v.d.W.
(Pretoria : The Government Printer, 1949)
1. Lantadene A was subjected to dry distillation yielding:
(a) A lactone, C₆H₈O₂, B.P. 200°C./650 mm. Hg, probably
"Terelactone".
(b) A crystalline product, M.P. 125°C. which has not yet been
investigated further.
...
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Louw, P.G.J.; De Kock, G.v.d.W.
(Pretoria : The Government Printer, 1949)
1. The active cardiac principle of Urginea rubella Baker has been isolated.
Analysis points to the empirical formula C₃₆H₁₈O₁₆. The name suggested for this compound is "rubellin". Rubellin melts at 261-3°C. with decomposition ...
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Rindl, M.; Sapiro, M.L.; De Kock, G.v.d.W.
(Pretoria : The Government Printer, 1949)
1. The alkaloid contained in Nicotiana glauca has been extracted and found to consist largely of optically inactive anabasine. It is of interest to note that anabasine from Anabasis aphylla is strongly laevo-rotatory, and ...
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Pretorius, T.P.; De Kock, G.v.d.W.
(Pretoria : The Government Printer, 1949)
1. Senecio paucicalyculatus has been examined for toxic alkaloids.
2. Three alkaloids, viz. retrorsine, isatidine and a new alkaloid,
paucicaline, have been isolated.
3. Paucicaline, probably C₁₈H₂₇O₈N, melts at ...
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Sapiro, M.L.; De Kock, G.v.d.W.
(Pretoria : The Government Printer, 1949)
1. Senecio bupleuroides contains the same two alkaloids as Senecio
retrorsus and Senecio isatideus, viz. retrorsine and isatidine.
2. The quantities of these alkaloids extractable from the dried plant,
collected in the ...
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Du Toit, R.; Goosen, P.J.; De Kock, G.v.d.W.
(Pretoria : The Government Printer, 1949)
Sheep treated at Onderstepoort with emulsions containing 5 per cent.
and 2•5 per cent. para para isomer of D.D.T. on selected sites on the
fleece, and subsequently tested on these treated sites by artificially induced ...
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Theiler, Gertrud; De Kock, G.v.d.W.
(Pretoria : The Government Printer, 1949)
1. The distribution of R. appendiculatus has been given in terms of
political divisions as well as in terms of vegetational coverage.
2. R. appendiculatus is seen to be present in areas with a rainfall above 15 in. per ...
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Theiler, Gertrud; De Kock, G.v.d.W.
(Pretoria : The Government Printer, 1949)
1. The distribution of B. decoloratus has been given in terms of political divisions as well as in terms of vegetational coverage.
2. The factor playing the most important role in limiting the spread
of B. decoloratus ...
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Mitchell, D.T.; Mansvelt, P.R.; De Kock, G.v.d.W.
(Pretoria : The Government Printer, 1949)
Experiments were done at Mbosi, in Southern Tanganyika, to determine
the efficiency and safety of formalinized spleen vaccine and attenuated goat
virus as agents of conferring immunity to cattle in the area. The ...