Browsing 1941 Onderstepoort Journal of Veterinary Science and Animal Industry, Volume 17, 1941 by Issue Date
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- Browsing 1941 Onderstepoort Journal of Veterinary Science and Animal Industry, Volume 17, 1941 by Issue Date
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Browsing 1941 Onderstepoort Journal of Veterinary Science and Animal Industry, Volume 17, 1941 by Issue Date
Now showing items 1-20 of 23
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(Pretoria : The Government Printer, 1941)1. Neumann's (1913) description of the male of Ixodes alluaudi is enlarged upon and the female, nymph and larva described for the first time. 2. It is shown that it is essentially a parasite of the shrew, which may, faut ...
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(Pretoria : The Government Printer, 1941)(1) The pH of the vaginal secretion of mature merino ewes, measured during oestrus, gave a mean value of 6·648, with a range of 5·85 to 7·40. During mid-dioestrus the mean value was 6·694, with a range of 6·00 to 7·60. ...
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(Pretoria : The Government Printer, 1941)(1) Ten female native goats were mated to, or artificially inseminated with semen from a number of highly fertile sheep-rams during four breeding seasons. (2) There was great difficulty in obtaining fertilisation, but ...
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(Pretoria : The Government Printer, 1941)The structural constituents, natural cellulose, hemicelluloses and lignin, in graminaceous food materials, faeces, and the crude fibre isolated from these have been determined. The results showed that: (1) crude fibre ...
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(Published by The Government Printer, Pretoria, 1941)The toxicity of fourteen plants was investigated. According to the available literature the following plants, viz., Mesembryanthemum angulatum Thunb., Kalanchoe rotundifolia Harv. and Urginea rubella Baker have for the ...
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(Pretoria : The Government Printer, 1941)1. The effect of sunlight on sheep artificially photosensitised with eosin and phylloerythrin was investigated. Glass filters were used to ascertain whether any of those rays readily absorbed by these dye-stuffs produced ...
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(Published by The Government Printer, Pretoria, 1941)
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(Published by The Government Printer, Pretoria, 1941)The analysis of the fleece densities of a group of extremely plainbodied stud rams is given. The number of fibres growing per square inch of skin (shoulder) varies from 29,100 to 53,200 with a mean of 40,900. The fleece ...
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(Published by The Government Printer, Pretoria, 1941)The ferret fits in immediately with its new environment as regards its sexual cycle, when taken from the northern to the southern hemisphere. The animals that were in anoestrum in England started breeding shortly after ...
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(Pretoria : The Government Printer, 1941)1. The temperature of the scrotal surface has been recorded at various air-temperatures within the range 10°C. to 40°C. (50°F. to 104°F.). 2. At low air-temperatures (10°C. to 25°C.) the temperature on areas I, II, and ...
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(Published by The Government Printer, Pretoria, 1941)The tensile strength of the wool grown on six regions on each of eight sheep was determined. Significant differences between the regions were obtained. In all eases the tensile strength of the belly wool was considerably ...
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(Published by The Government Printer, Pretoria, 1941)After giving a description of two instances of cervical ribs in bovines, these cases are considered in the light of various theories that have been advanced in explanation of such anomalies. It is concluded that both of ...
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(Published by The Government Printer, Pretoria, 1941)Undoubted cases of Domsiekte have been produced by suddenly cutting the ration of good conditioned heavily pregnant ewes. An identical condition has been set up in non-pregnant ewes but a much longer period on the poor ...
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Treatment and control of chronic streptococcus mastitis in bovines : results obtained in two herds (Pretoria : The Government Printer, 1941)1. An account is given of the results obtained over periods of 14 and 12 months respectively from a scheme applied to two South African Friesland herds and aiming at the eradication of chronic streptococcus mastitis from ...
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(Pretoria : The Government Printer, 1941)(1) A technique is described for the preservation and counting of ruminal infusoria. (2) Reactions of specific infusoria as well as total infusorial populations to changes in the diet of stable fed sheep were ...
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(Published by The Government Printer, Pretoria, 1941)The available literature is reviewed and where possible conclusions are drawn. References are listed which deal either directly or indirectly with the question of Pregnancy Disease of sheep.
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(Pretoria : The Government Printer, 1941)Details have been given of the construction of thermocouples suitable for temperature measurements on skin surfaces and in living tissue. The sources of error have been discussed, and tests of the accuracy of the method ...
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(Published by The Government Printer, Pretoria, 1941)
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(Published by The Government Printer, Pretoria, 1941)
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(Pretoria : The Government Printer, 1941)(1) Senecio sceleratus sp. nov. 'Schweickerdt is an extremely toxic Senecio species. It contains at least three more or less toxic alkaloids, viz., isatidine, retrorsine and a new alkaloid, sceleratine, (2) Sceleratine, ...
Now showing items 1-20 of 23