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Browsing 1939 Onderstepoort Journal of Veterinary Science and Animal Industry, Volume 12, 1939 by Type "Article"
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Kellermann, J.H.; Du Toit, P.J.
(Pretoria : Government Printer, 1939)
Data are presented on the effects of short intermittent fasts on bone calcification, food utilization and tissue composition. No significant differences were found between the percentage ash of femurs of males versus females ...
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Smuts, D.B.; Marais, J.S.C.; Du Toit, P.J.
(Pretoria : Government Printer, 1939)
By means of the paired feeding method it was shown that methionine supplemented lucerne significantly better than cystine. If lucerne is supplemented by methionine plus cystine and compared with lucerne supplemented by ...
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Hirzel, R.; Du Toit, P.J.
(Pretoria : Government Printer, 1939)
On the basis of measurements taken at Smithfield Fatstock Show between 1921 and 1932 the subject is discussed under the following heads: mutton: quality as af fected by the proportions of muscle, fat and bone in the carcase; ...
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Bedford, G.A.H.; Du Toit, P.J.
(Pretoria : Government Printer, 1939)
Werneck (Mem. do lnstit. Oswaldo Cruz, XXXI, iii, pp. 496-589, 1936) recently reduced the family Trichodectidae to a single genus, but such a procedure is unwarrantable. If one examines casually the figures of species in ...
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Bosman, V.; Botha, M.L.; Du Toit, P.J.
(Pretoria : Government Printer, 1939)
The importance of length as a characteristic of the merino fleece has often been stressed. It has been shown (Bosman 1937) that, in a stud ram producing 40,000 fibres per square inch of skin, every half an inch increase ...
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Bedford, G.A.H.; Du Toit, P.J.
(Pretoria : Government Printer, 1939)
The family Menoponidae has recently been split up into several new genera, but the characters used for separating these genera have not always been of generic significance. For instance, as Ferris (Bern. P. Bishop Mus. ...
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Bonsma, H.C.; Rose, P.D.; Quinlan, John; Claassens, C.C.; Du Toit, P.J.
(Pretoria : Government Printer, 1939)
Very little is known of the origin of the Ronderib-Afrikaner sheep, but it is generally believed to have been developed by selection from the indigenous sheep of the fat-tailed type which were in the posession of the ...
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Ortlepp, R.J.; Du Toit, P.J.
(Pretoria : Government Printer, 1939)
1. Eggs passed in the faeces of sheep or goats or obtained from the uteri or gravid females are able to hatch in from 24 to 36 hours under suitable conditions of aeration, temperature and moisture.
2. The larvae have three ...
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Sterne, Max; Robinson, E.M.; Du Toit, P.J.
(Pretoria : The Government Printer, 1939)
Anthrax spore vaccines have been used in South Africa for the past seventeen years with, on the whole, very satisfactory results. In the course of time the original methods of preparing the vaccine have been somewhat ...
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Van der Walt, S.J.; Steyn, Douw G.; Du Toit, P.J.
(Pretoria : Government Printer, 1939)
The toxicity of thirty-three plants was investigated. According to the available literature the following ten plants were proved for the first time to be toxic: Lotononis laxa, Cotyledon coruscans, Cotyledon campanulata, ...
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Roux, Lucien L.; Van Aswegen, W.G.; Quinlan, John; Du Toit, P.J.
(Pretoria : Government Printer, 1939)
1. Twenty-eight high grade Sussex X Afrikander heifers, maintained in an artificial environment, enforcing dry rations and restricted exercise, has been observed regarding (1) the length of the period between birth and ...
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De Waal, H.L.; Du Toit, P.J.
(Pretoria : Government Printer, 1939)
Isatidine has been isolated not only from S. isatideus D.C. but also from S. retrorsus D.C., not hitherto observed by other workers. S. retrorsus contains as its main alkaloid retrorsine, accompanied by isatidine in lesser ...
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Malan, J.R.; Du Toit, P.J.
(Pretoria : The Government Printer, 1939)
The helminths of South African lizards collected by Malan show a high degree of host-specificity. Among the species recorded the following are new: Paradistomum zonuri n. sp. and Thubunaea impar n. sp. from Zonurus cordylus; ...
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Ortlepp, R.J.; Du Toit, P.J.
(Pretoria : Government Printer, 1939)
Of 10 new species of helminths described 7 are from rodents, 2 from antelopes and I from the rock rabbit, viz., Paralibyostrongylus vondioei gen. and sp. nov. from the cane rat; Longistrongylus schrenki sp. nov. from the ...
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Sterne, Max; Nicol, J.; Robinson, E.M.; Du Toit, P.J.
(Pretoria : Government Printer, 1939)
(1) Virulent anthrax strains incorporated in saponin retained much of their virulence, and could not be used in vaccines.
(2) Italian and American commercial saponin vaccines examined by us did not contain virulent ...
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Steyn, Douw G.; Reinach, Norman; Du Toit, P.J.
(Pretoria : Government Printer, 1939)
Points concerning the harmful effects of drinking water upon man and animal are discussed:
(a) Poisoning with excessive quantities of "normal or wholesome water" (Ill A).
(b) Poisoning due to the drinking of excessively ...