{"title":"Absorption of phenothiazine from the rumen of sheep, and its estimation in blood serum.","authors":"R. P. Harpur, O. F. Denstedt, W. Swales","doi":"10.1139/CJR50D-012","DOIUrl":"https://doi.org/10.1139/CJR50D-012","url":null,"abstract":"Under the conditions described, phenothiazine is shown to be soluble in human and sheep serum. Ultraviolet examination of serum containing phenothiazine indicates that the compound is unchanged by solution in serum. After preliminary experiments with ultraviolet analysis the visual spectra of the free radicals were found to be more suitable for the analysis of sheep serum. A method is described, which makes use of free-radical absorption spectra, for the detection and approximate estimation of phenothiazine in serum when it is present with phenothiazone. The method also allows for the detection of diphenylamine o-sulphoxide. Experiments with lambs which had been dosed with phenothiazine showed that while the peripheral circulation contained leucophenothiazone, the blood draining the rumen contained phenothiazine also.","PeriodicalId":309372,"journal":{"name":"Canadian Journal of Research. Section D. Zoological Sciences","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1950-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129580387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"THE FATE OF PHENOTHIAZINE IN THE GASTROINTESTINAL TRACT OF THE SHEEP","authors":"R. P. Harpur, W. Swales, O. F. Denstedt","doi":"10.1139/CJR50D-011","DOIUrl":"https://doi.org/10.1139/CJR50D-011","url":null,"abstract":"The methods for estimating phenothiazine and phenothiazone in biological materials have been investigated. It has been shown that when phenothiazine, or phenothiazone is treated with bromine (under the conditions described), a red color is produced which has absorption maxima at the following wavelengths: 240, 282, 291, 375, and 510 mμ. Phenothiazone, in 95% ethanol, has a spectrum with absorption maxima at 237, 273, 280, 288, 369, and 508 mμ. Thus the bromine method is not applicable for distinguishing between these two compounds. It is shown also that phenothiazine may interfere with the estimation of phenothiazone when the latter is measured by the light absorption of its free radical. The ultraviolet absorption spectra of phenothiazine and diphenylamine o-sulphoxide have been determined. The spectrum of the former compound has a maximum at 254 mμ (with a small maximum at 318 mμ), and that of the latter has maxima at 227, 272, 302, and 335 mμ. Leucophenothiazone also has a maximum at 254 mμ.While excre...","PeriodicalId":309372,"journal":{"name":"Canadian Journal of Research. Section D. Zoological Sciences","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1950-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114675023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Studies on cestodes of the genus Triaenophorus from fish of Lesser Slave Lake, Alberta. IV. The life of Triaenophorus crassius Forel in the second intermediate host.","authors":"R. B. Miller","doi":"10.1139/CJR45D-004","DOIUrl":"https://doi.org/10.1139/CJR45D-004","url":null,"abstract":"The plerocercoids of Triaenophorus crassus encyst normally in the flesh of fishes of the genus Leucichthys; the whitefishes, Coregonus clupeaformis and Prosopium oregonium, are common alternative hosts in Lesser Slave Lake. Elsewhere lake trout, Cristivomer namaycush, and possibly the inconnu, Stenodus leucichthys, may occasionally serve as hosts.The procercoids arrive in the stomach of their second intermediate host while in the body cavity of Cyclops bicuspidatus. When they are liberated by digestion, the majority apparently enter pyloric caeca, penetrate these, cross the body cavity, and enter the flesh, where encystment as the plerocercoid takes place. The evidence for these movements is only partial. The plerocercoids encyst in the flesh in July each year. They remain three or four years and then disappear by drying up or being reduced to small calcareous nodules.The number of plerocercoids per fish increases with the age of the fish up to five or six years.","PeriodicalId":309372,"journal":{"name":"Canadian Journal of Research. Section D. Zoological Sciences","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1945-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129119130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dried whole egg powder. 5. Definition and properties of low grade egg powders.","authors":"M. Thistle, M. Reid, N. Gibbons","doi":"10.1139/CJR43D-020","DOIUrl":"https://doi.org/10.1139/CJR43D-020","url":null,"abstract":"The point at which 50% of tasters regarded dried whole egg preparations as unsuitable for human consumption coincided with a rating of 2.7 on a scale ranging from 10 for excellent, fresh egg to 0 for repulsive material. The protein fraction of these low grade samples had deteriorated badly, as shown by fluorescence measurements. The fat fraction showed no evidence of peroxide oxygen formation.","PeriodicalId":309372,"journal":{"name":"Canadian Journal of Research. Section D. Zoological Sciences","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1943-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134382040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"CONTINUED STUDIES ON CERCARIAL DERMATITIS AND THE TREMATODE FAMILY SCHISTOSOMATIDAE IN MANITOBA: PART I","authors":"J. A. Mcleod, G. Little","doi":"10.1139/CJR42D-015","DOIUrl":"https://doi.org/10.1139/CJR42D-015","url":null,"abstract":"The life cycle of Pseudobilharziella querquedulae McLeod, 1937 has been completed experimentally and the relationship of the adult to Cercaria physella Talbot, 1936 has been definitely established. The female of the species and the eggs were recovered and are described for the first time. A report is given on the exposure of a number of species of molluscs to the miracidia of this schistosome and notes on the life cycle and adult stage of Cercaria dermolestes McLeod, 1940 are included. A case of hypersensitiveness in man to the proteins of schistosome cercariae is reported.","PeriodicalId":309372,"journal":{"name":"Canadian Journal of Research. Section D. Zoological Sciences","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1942-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123555007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Studies on the bionomics and control of the bursate nematodes of horses and sheep. VIII. Comparisons of the lethal effects of some chemicals containing sulphur on the free-living stages of sclerostomes.","authors":"I. Parnell","doi":"10.1139/CJR40D-035","DOIUrl":"https://doi.org/10.1139/CJR40D-035","url":null,"abstract":"The effect on the free-living stages of sclerostomes of 14 common chemicals containing sulphur is discussed. Potassium xanthogenate in weak solution will sterilize about 160 times its weight of fresh faeces; in a strong solution, less than a quarter of the weight. Carbon disulphide will sterilize only about 32 times its weight under the conditions imposed by this technique. In solutions of medium strength the sulphates of zinc will sterilize 32 times, and those of iron (ferrous), copper, and manganese, 13 times their weight; lesser quantities, however, might be effective in practice, because the larvae from cultures so treated die comparatively rapidly after reaching the third stage. Dry ferric sulphate will sterilize 20 times its weight. Sodium sulphide, sodium sulphite, and sodium sulphate are all so ineffective that only when applied dry or as strong solutions are they lethal; they sterilized from eight to five times their weight. Magnesium sulphate will sterilize only four times and zinc sulphide twic...","PeriodicalId":309372,"journal":{"name":"Canadian Journal of Research. Section D. Zoological Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1940-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128361664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"STUDIES ON THE BIONOMICS AND CONTROL OF THE BURSATE NEMATODES OF HORSES AND SHEEP: VII. THE EFFECT OF SOME SUBSTANCES, USED IN THE CONTROL OF FARM AND HOUSEHOLD PESTS, ON THE FREE-LIVING STAGES OF SCLEROSTOMES","authors":"I. Parnell","doi":"10.1139/CJR39D-021","DOIUrl":"https://doi.org/10.1139/CJR39D-021","url":null,"abstract":"The effect on the free-living stages of Sclerostomes caused by the addition to fresh horse faeces of some substances used in the control of household and farm pests, is discussed. Under the conditions of these experiments para- and orthodichlorbenzene will sterilize about 400 times their weight of faeces. Sodium fluoride will sterilize, on an average, approximately 150 times its weight of faeces, but it is almost twice as effective if applied as a very weak solution. Sodium silicofluoride, which also is most effective as a very weak solution, probably has an approximately equal value. Naphthalene, when mixed in the faeces, will sterilize about 270 times its own weight. Dichloropentanes will sterilize about 185 times their weight of faeces. 40% nicotine sulphate will, on an average, sterilize approximately 14 times its weight of faeces, but as a weak solution may be five or six times as effective. Ethylenedichloride, chloroform and carbon tetrachloride will sterilize about 21, 18 and 12 times their weight ...","PeriodicalId":309372,"journal":{"name":"Canadian Journal of Research. Section D. Zoological Sciences","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1939-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123920002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"RAPHIDASCARIS LAURENTIANUS SP. N. (ASCAROIDEA) FROM SALVELINUS FONTINALIS (MITCHILL) IN QUEBEC","authors":"L. R. Richardson","doi":"10.1139/CJR37D-010","DOIUrl":"https://doi.org/10.1139/CJR37D-010","url":null,"abstract":"A new Raphidascarid nematode, Raphidascaris laurentianus is described from material collected from the intestine of the speckled trout. The specimens were obtained from Labelle County, Quebec. R. laurentianus is of moderate size and is characterized by having delicate caudal alae, parallel uteri, and only five to twelve pairs of preanal papillae. This is the first definite record of such a nematode from speckled trout.","PeriodicalId":309372,"journal":{"name":"Canadian Journal of Research. Section D. Zoological Sciences","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1937-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123614170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Studies on the endoparasitic fauna of Trinidad mammals. II. Additional parasites from Trinidad deer.","authors":"T. Cameron","doi":"10.1139/CJR36D-001","DOIUrl":"https://doi.org/10.1139/CJR36D-001","url":null,"abstract":"Setaria bidentata (Molin) and Eucyathostomum longesubulatum Molin, are recorded from Mazama simplicicornis and are re-described together with a species of Oxyurid from the same host.","PeriodicalId":309372,"journal":{"name":"Canadian Journal of Research. Section D. Zoological Sciences","volume":"232 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123002560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}