Browsing 1941 Onderstepoort Journal of Veterinary Science and Animal Industry, Volume 16, 1941 by Type "Article"
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Browsing 1941 Onderstepoort Journal of Veterinary Science and Animal Industry, Volume 16, 1941 by Type "Article"
Now showing items 1-20 of 20
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(Pretoria : The Government Printer, 1941)(a) To obtain information concerning the sexual activity of cattle under the environmental conditions prevailing in the north western, semi-arid, summer rainfall areas of the Union of South Africa, a series of sex-physiological ...
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(Pretoria : The Government Printer, 1941)1. Carotene values were determined by analysing veldgrass samples, collected monthly in the areas, Onderstepoort (Pretoria district), Ermelo (Transvaal Highlands) and Vryburg (Bechuanaland). 2. From the values for Carotene ...
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(Pretoria : The Government Printer, 1941)A new species of tick from domestic stock is described and figured belonging to the genus Rhipicephalus. It closely resembles R. oculatus, Neumann, a common species on hares in South Africa from which it may be distinguished ...
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(Pretoria : The Government Printer, 1941)(1) An account is given of the abnormal conditions which may be encountered in the bovine udder and its secretion in chronic streptococcus mastitis. It is pointed out that, on account of these different manifestations of ...
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(Pretoria : The Government Printer, 1941)1. By means of a modified form of the moving boundary method of electrophoresis of Tiselius, it was found possible to measure the rate of migration as well as the isoelectric points of viruses and their neutralizing ...
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(Pretoria : The Government Printer, 1941)The endogenous nitrogen metabolism of pigs have been measured and an equation evolved for the estimation of the maintenance protein requirements of pigs. The equation obtained is P=0.79 W·⁷³⁴, where P=protein in grams, and ...
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(Pretoria : The Government Printer, 1941)Three new species of Salmonella are described. 1. S. durban was obtained from an adult native woman suffering from dysentery. The antigenic formula allocated to it was IX-a, enx. 2. S. reading var. kaapstad was isolated ...
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(Pretoria : The Government Printer, 1941)Observations were made on Albino rats over a period of four years (1933-37); 238 litters were obtained comprising 2043 young at birth; 1789 (872 males and 917 females) were reared and weighed weekly. PRENATAL GROWTH. (a) ...
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(Pretoria : The Government Printer, 1941)Results are presented showing the effect of dietary bloodmeal on the porphyrin excretion of four mature normal steers. Bloodmeal causes a higher excretion in the faeces of copro- and chloroform soluble porphyrins. The ...
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(Pretoria : The Government Printer, 1941)By means of nitrogen metabolism experiments, the biological values of 94 for white fishmeal, 81 for crayfishmeal, 71 for fishmeal, 67 for meatmeal, 67 for meat and bonemeal and 63 for whale and fishmeal were determined. ...
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(Pretoria : The Government Printer, 1941)(1) One hundred and ninety-six merino sheep, maintained under dry lot conditions, were submitted to artificial insemination with fresh and stored semen obtained from highly fertile merino rams. The resulting pregnancies ...
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(Pretoria : The Government Printer, 1941)(1) Details of the technique employed for the preparation of gradocol membranes are given together with the technique employed in the filtration of neurotropic horsesickness virus. (2) From data collected from the ...
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(Pretoria : The Government Printer, 1941)(1) The scrotal, skin, and body temperatures of a Sussex bull have been measured in the open during the period 7.1.41 to 27.3.41, at a range of air temperature of 26.4°F., i.e., from 64.8°F. to 91.2°F. (2) There was a ...
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(Pretoria : The Government Printer, 1941)The toxicity of sixteen plants was investigated. According to the available literature the following three plants were proved for the first time to be toxic: Senecio pterophorus DC; Kalanchoe paniculata Harv., Kalanchoe ...
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(Pretoria : The Government Printer, 1941)1. Ninety-nine maiden Merino ewes, between the ages of 27 and 33 months, kept in an enforced environment in "dry lot" were submitted to a 3 hourly test for oestrus, from 6 p.m. to 6 a.m., at the commencement of the usual ...
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(Pretoria : The Government Printer, 1941)1. Isatinecine has a pyrrole nucleus and has no tertiary nitrogen atom. It must, therefore have a secondary aminogroup. The pyrrollizidine structure applicable to the two senecio bases retronecine and platynecine is, ...
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(Pretoria : The Government Printer, 1941)A study of the scaliness of South African Merino wool samples showed that the percentage differences in friction between the two directions varied from 3.0 per cent. to 130 per cent. At 70 per cent. relative humidity ...
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(Pretoria : The Government Printer, 1941)1. At birth the serum of foals from immune dams contained no antibodies to neurotropic attenuated horsesickness virus demonstrable by the intracerebral protection test in mice. 2. Less than 30 hours after birth, that is ...
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(Pretoria : The Government Printer, 1941)By means of metabolism experiments on rats it was shown that the biological value of the rumen ingesta is better than that of lucerne. When rumen ingesta are supplemented by cystine their biological value is significantly ...
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(Pretoria : The Government Printer, 1941)1. The technique adopted for the feeding of ticks on guinea-pigs in investigations into the tick transmission of South African tick-bite fever is described. 2. Since the reactions produced in guinea-pigs by the intraperitoneal ...
Now showing items 1-20 of 20