1933 Onderstepoort Journal of Veterinary Science and Animal Industry, Volume 1, 1933

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Contentes Pages: Onderstepoort Journal of Veterinary Research, Vol ??, 19??

CONTENTS

*Volume 1: Number 1*

Section I: Protozoal Diseases

Mortality in fowls due to Aegyptianella pullorum	Coles, JDWA	9

The transmission of Aegyptianella pullorum, Carpano, to fowls by means of ticks belonging to the genus Argas	Bedford, GAH & Coles, JDWA	15

Section II: Virus Diseases

The immunization of mules with formalised horsesickness virus. Part II	Du Toit, PJ, Alexander, RA & Neitz, WO	21

The immunization of horses against horsesickness by the use of formalised virus. Part II	Du Toit, PJ, Alexander, RA & Neitz, WO	25

Rabies in South Africa. Occurrence and distribution of cases during 1932	Neitz, WO & Thomas, AD	51

Section III: Parasitology

The administration of anthelminthics to horses in bran	Monnig, HO & Marais, IP	59

The cause of nodular enteritis in cattle	Monnig, HO	63

The chemotherapy of oesophagostomiasis in sheep	Monnig, HO	67

Wild antelopes as carriers of nematode parasites of domestic ruminants. Part III	Monnig, HO	77

Ozolaimus megatyphlon (Rud., 1819) a little known helminth from Iguana tuberculata	Ortlepp, RJ	93

Joyeuxia fuhrmanni Baer, 1924, a hitherto unrecorded cestode parasite of the domesticated cat in South Africa	Ortlepp, RJ	97

On some South African reptilian oxyurids	Ortlepp, RJ	99

Section IV: Physiology

Studies on the alimentary tract of the Merino sheep in South Africa. I. Investigations into the physiology of deglutition	Monnig, HO	117

A study of the duration of motility of spermatozoa in the different divisions of the reproductive tract of the Merino ewe	Quinlan, J, Mare, GS & Roux, LL	135

Section V: Poisonous Plants

Plant poisoning in stock and the development of tolerance	Steyn, DG	149

The toxicity of sodium chlorate	Steyn, DG	157

Lathyrus sativus L. (chickling vetch; khesari; Indian pea) as a stock food	Steyn, DG	163

Recent investigations into the toxicity of known and unknown poisonous plants in the Union of South Africa	Steyn, DG	173

Fungi in relation to health in man and animal	Steyn, DG	183

A short summary on our botanical knowledge of Lolium temulentum L.	Leemann, AC	213

Poisoning of human beings by weeds contained in cereals (bread poisoning)	Steyn, DG	219

Section VI: Chemical Blood Studies

Chemical blood studies. I. Comparative studies on blood,"laked" and "unlaked" blood filtrates of animals in health and disease, with particular reference to methods and technique employed	Graf, H	269

Chemical blood studies. II. A contribution to the determination of urea in animal blood filtrates ("laked" and "unlaked")	Wilken Jorden, TJ & Graf, H	279

Chemical blood studies. III. Comparative studies on "laked" and "unlaked" blood filtrates of sheep in health and during "heartwater" (Rickettsia ruminantium infection) and bluetongue (catarrhal fever)	Graf, H	285

Chemical blood studies. IV. Comparative studies on "laked" and "unlaked" blood filtrates of horses in health and during horsesickness (Pestis equorum)	Graf, H	335

Chemical blood studies. V. Comparative studies on "laked" and "unlaked" blood filtrates of bovines in health and during anaplasmosis (A. marginale infection) and piroplasmosis (P. bigeminum infection)	Graf, H	371


*Volume 1: Number 2*

Section I: Protozoal Diseases

Blood parasites of game in Zululand. Further report	Neitz, WO	411

Section II: Mineral Metabolism and Deficiency

Studies in mineral metabolism XXVII. The effect of two different calcium phosphorus ratios upon the growth of calves	Du Toit, PJ, Malan, AI, & Groenewald, JW	421

The colorimetric determination of sodium in vegetation	Louw, JG	425

Section III: Plant Studies and Poisonous Plants

Psilocaulon absimile N.E.Br. as a stock poison. I. Determination of oxalic, malic, tartaric acids, etc.	Rimington, C & Steyn, DG	439

Section IV: Studies on Photosensitisation

Studies on the photosensitisation of animals in South Africa. I. The action of various fluorescent dyestuffs	Quin, JI	459

Studies on the photosensitisation of animals in South Africa. II. The presence of a lethal factor in certain members of the plant genus Tribulus	Quin, JI	469

Studies on the photosensitisation of animals in South Africa. III. The photodynamic action of Hypericum ethiopicum var. glaucescens Sond. and Hypericum leucoptychodes (Syn. H. lanceolatum) Lam.	Quin, JI	491

Studies on the photosensitisation of animals in South Africa. IV. The toxicity of Lopholaena coriifolia (Harv.) Phill. & C. A. Sm. (= L. randii sp. Moore)	Quin, JI	497

Studies on the photosensitisation of animals in South Africa. V. The toxicity of Lippia rehmanni (Pears) and Lippia pretoriensis (Pears)	Quin, JI	501

Studies on the photosensitisation of animals in South Africa. VI. The effect of surgical obstruction of the normal bile flow	Quin, JI	505

Section V: Animal Husbandry

Watery whites of eggs : report of preliminary investigations	Canham, AS	529

Influence of regular dipping on the Merino sheep and its fleece	Deurden, JK, Mare, GS & Bosman, V	567

A study of wool from Merino stud rams	Bosman, V & Botha, PS	581

The effect of barley, millet (a Yati-Pennisetum sp.) and lucerne meal in bacon production	Murray, GN, Schutte, DJ & Du Plessis, JA	595

Studies in native animal husbandry. 6. A note on Ovambo cattle	Groenewald, JW & Curson, HH	601

Studies in native animal husbandry. 7. Makalanga cattle - a representative described	Bisschop, JHR & Curson, HH	621

Section VI: Miscellaneous

Keratosis of the skin in cattle	Curson, HH	631

Anatomical studies. No. 38: On an urethral diverticulum in a kid	Curson, HH & Thiel, AR	633

Anatomical studies. No. 39: A congenital meningeal lipoma in a sheep	Curson, HH	637

Anatomical studies. No. 40: On two anomalies associated with the 1st branchial arch	Curson, HH	641

Author index		647

Subject index		651

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Now showing 1 - 20 of 48

Rabies in South Africa : occurrance and distribution of cases during 1932
(Pretoria : Union of South Africa, Dept. of Agriculture, 1933) Neitz, W.O.; Thomas, A.D.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
No abstract available.
The immunization of horses against horsesickness by the use of formalised virus. Part II
(Pretoria : Union of South Africa, Dept. of Agriculture, 1933) Du Toit, P.J.; Alexander, R.A.; Neitz, W.O.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
(1) The antigenic value of individual spleens varies greatly. (2) The product of several pooled spleens is more potent than that obtained from a single spleen. (3) The potency of different batches of pooled spleens varies. (4) The keeping quality of formalized vaccines for four months is good. After that time there is evidence of decrease in value (not tested after seven months). (5) The addition of phenol as a bactericide has no detrimental effect. (6) Filtration through a Seitz filter is contra-indicated. (7) The lowest concentration of formaldehyde required to produce a safe vaccine is 1 : 1000. (8) The lowest concentration of formaldehyde able to produce a solid immunity to 0-virus is 1 : 4000. (9) It is not safe to proceed from a 1 : 1000 vaccine to a 1 : 4000 vaccine in less than two intermediate steps. (10) The best results have been obtained with four injections of 1: 1000, 1 : 2000, 1 : 3000 and 1 : 4000 vaccine. (11) The interval between injections should not be less than 14 days, or greater than 21 days. (12) The dose of vaccine should not be smaller than 20 c.c. A dose of 30 c.c. has given the most constant results. (13) The immunity produced by the vaccine may last for as long as six months. Usually it is transient and on occasion has markedly decreased in 28 days. (14) It is necessary to complete immunization by a dose of fully virulent virus. (15) The margin of safety of the method is narrow. (16) The application of the method to the field cannot be recommended in the present state of our knowledge.
Keratosis of the skin in cattle
(Pretoria : Union of South Africa, Dept. of Agriculture, 1933) Curson, H.H.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
No abstract available.
A study of wool from Merino stud rams
(Pretoria : Union of South Africa, Dept. of Agriculture, 1933) Bosman, V.; Botha, P.S.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
Author index
(Pretoria : Union of South Africa, Dept. of Agriculture, 1933) Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
Subject index
(Pretoria : Union of South Africa, Dept. of Agriculture, 1933) Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
Studies on the photosensitisation of animals in South Africa. VI. The effect of surgical obstruction of the normal bile flow
(Pretoria : Union of South Africa, Dept. of Agriculture, 1933) Quin, J.I.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
1. The object in undertaking bile duct obstruction experiments in sheep, was to throw further light on the genesis of icterus and photosensitisation in true geeldikkop as caused by Tribulus spp. and also by other plants in South Africa. 2. The operative procedure as described for the ligation and obstruction of the extra-hepatic bile tracts in the sheep. 3. The ensuing clinical symptoms and the blood of operated animals were studied from day to day. (a) A progressive bilirubinaemia was noted within one hour after operation. Clinical icterus, however, only presented itself several days afterwards and then persisted throughout the course of the condition. Within 24 hours the blood, and later also the urine, showed a strong direct van den Bergh reaction. (b) Practically every animal, with the head and back closely shorn, when exposed to sunlight, developed symptoms of photosensitisation within one week of the operation. This was shown by the animals flinching, shaking the head and licking the lips. Soon afterwards oedema of the subcutis of the affected skin set in, e.g. the ears became thick and pendulous and the face swollen. Photosensitisation usually persisted for several days and in some cases lasted throughout the course of the condition. This was followed by hardening of the affected skin and sloughing of the superficial layers. Skin protected by a coat of wool remained normal. (c) Animals with the biliary tract obstructed showed a progressive loss of condition up to the point of extreme emaciation. 4. On post-mortem the lesions found were those of intense generalised icterus, enlargement of the liver with marked bile stasis, dilatation of all the biliary tracts above the point of obstruction, enlargement and bile pigmentation of the kidneys, and frequently stasis in the large intestine. 5. Various modifications of the above operation were also attempted. The resultant symptoms and post-mortem lesions, however, were not altered or intensified to any extent.
Studies on the photosensitisation of animals in South Africa. V. The toxicity of Lippia rehmanni (Pears) and Lippia pretoriensis (Pears)
(Pretoria : Union of South Africa, Dept. of Agriculture, 1933) Quin, J.I.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
Studies on the photosensitisation of animals in South Africa. IV. The toxicity of Lopholaena coriifolia (Harv.) Phill. & C. A. Sm. (= L. randii sp. Moore)
(Pretoria : Union of South Africa, Dept. of Agriculture, 1933) Quin, J.I.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
Lathyrus sativus L. (chickling vetch; khesari; Indian pea) as a stock food
(Pretoria : Union of South Africa, Dept. of Agriculture, 1933) Steyn, D.G.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
Lathyrus sativus grown at Onderstepoort and fed without any additional ration in the fresh state and in the preflowering and flowering stages proved to be poisonous to horses. Cattle, sheep and rabbits, although having consumed relatively larger amounts of the plant, suffered no ill-effects. No definite results with regard to the active principle of Lathyrus sativus have been achieved by the various investigators.
Watery whites of eggs : report of preliminary investigations
(Pretoria : Union of South Africa, Dept. of Agriculture, 1933) Canham, A.S.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
Anatomical studies, no. 40 : on two anomalies associated with the 1st branchial arch
(Pretoria : Union of South Africa, Dept. of Agriculture, 1933) Curson, H.H.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
No abstract available.
Anatomical studies, no. 38 : on an urethral diverticulum in a kid
(Pretoria : Union of South Africa, Dept. of Agriculture, 1933) Curson, H.H.; Thiel, A.R.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
No abstract available.
Recent investigations into the toxicity of known and unknown poisonous plants in the Union of South Africa
(Union of South Africa : Dept. of Agriculture, 1933) Steyn, D.G.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
The toxicity of twenty-seven plant specimens was investigated and of these the following were found poisonous:- (a) Psilocaulon absimile N.E. Br. (b) Adromishcus umbraticolus C.A. Sm. (slightly toxic). (c) Equisetum ramossissimum Desf. (d) Chironia transvaalensis Gilg. (e) Scilla sp. (Nat. Herb. No. 13397). (f) Ornithoglossum glaucum Salisb. Equisetum ramossissimum Desf. administered in the fresh state produced symptoms in sheep closely resembling those attributed to this plant. No previous records of toxicity of the following plants could be found in the available literature:- Psilocaulon absimile N.E. Br. Chironia Transvaalensis Gilg.
Poisoning of human beings by weeds contained in cereals (bread poisoning)
(Union of South Africa : Dept. of Agriculture, 1933) Steyn, D.G.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
A.- Poisonous weeds, which are liable to find their way into wheat and cause poisoning in human beings are discussed. B.- Circumstances favouring bread poisoning, the effect of the process of preparing and baking bread of the toxicity of weeds contained in the meal, and the cause of death in Senecio poisoning are discussed. C.- It would seem advisable to proclaim species of Senecio growing on cultivated lands as noxious weeds in addition to enforcing Regulation 12 (7) of the Food, Drugs, and Disinfectants Act, No. 13 of 1929.
Anatomical studies, no. 39 : a congenital meningeal lipoma in a sheep
(Union of South Africa : Dept. of Agriculture, 1933) Curson, H.H.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
No abstract available.
The effect of barley, millet (a Yati-Pennisetum sp.) and lucerne meal in bacon production
(Union of South Africa : Dept. of Agriculture, 1933) Murray, G.N.; Schutte, D.J.; Du Plessis, J.A.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
Three rations were compared with the standard maize-meat meal ration when fed to baconers. Excellent gains were made on all the rations, the pigs on the millet and barley rations, however, making the best gains, but these lots also consumed the largest amounts of food daily. The difference in rate of growth slightly influenced the degree of fatness of the pigs, otherwise there were no significant differences in the carcase measurements of the pigs in the four lots. The fat appeared to be firmer than that of pigs of previous trials which had similar rations. Type of pig may have caused this difference. The grading was good and the rate of gain had no adverse influence, so that it appears that different types of pigs have different optimum growth rates for the production of first grade bacon. The standard maize-meat meal ration again proved to be the most economical in bacon production.
Studies in native animal husbandry : 6. A note on Ovambo cattle
(Union of South Africa : Dept. of Agriculture, 1933) Groenewald, J.W.; Curson, H.H.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
Chemical blood studies, V. Comparative studies on "laked" and "unlaked" blood filtrates of bovines in health and during anaplasmosis (A. marginale infection) and piroplasmosis (P. bigeminum infection)
(Union of South Africa : Dept. of Agriculture, 1933) Graf, H.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture
Only one case being available no general deductions as to the changes in the blood resulting from a P. bigeminhum infection are permissive. Summarising the above case one notices marked increases in nearly all the nitrogenous fractions and in sugar, associated with the period of maximum erythrocyte destruction. The efficacy of the kidneys renders a rapid excretion of all "free" haemoglobin possible, but apparently the excretion of urea is retarded temporarily, leading to an increase in the blood for 2-3 days. The rise in A.A.N. is peculiar, particularly if it be remembered that the animal ceased feeding just during the period in which the A.A.N. was highest. Conceivably the increase is due to the protein decomposition rather than an interference with the absorption from the intestines and deaminisation of amino-acids in the liver. On the other hand the liver has a severe strain placed on it by the secretion of abnormally large amounts of bile pigments as a result of the excessive erythrocyte destruction and deaminosation may thereby be temporarily interferred with. If this is the correct interpretation the increase in urea would find its explanation not in increased formation, but in retention or retarded excretion through the kidneys, possibly due to degenerative changes. More research is necessary before any definite modus vivendi for the various observations can be formulated and substantiated. In the meantime the case is of interest in so far as it indicates some of the changes in composition resulting during a fulminant severe erythrolysis.
A study of the duration of motility of spermatozoa in the different divisions of the reproductive tract of the Merino ewe
(Union of South Africa : Dept. of Agriculture, 1933) Quinlan, J.; Mare, G.S.; Roux, L.L.; Du Toit, P.J.; Union of South Africa. Dept. of Agriculture

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