Factors influencing infections in Rhipicephalus appendiculatus ticks fed on cattle infected with Theileria parva
A large database on the transmission of a stabilate of the Theileria parva Muguga stock from one breed of cattle using two stocks of Rhipicephalus appendiculatus, Muguga and O1 Pejeta was developed and analysed. Factors associated with the ticks and cattle, and the infections developing in cattle we...
| Autores principales: | , , , , , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Cambridge University Press
1996
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/29387 |
| _version_ | 1855525613177143296 |
|---|---|
| author | Young, A.S. Dolan, T.T. Morzaria, S.P. Mwakima, F.N. Norval, R.A.I. Scott, J. Sherriff, A. Gettinby, George |
| author_browse | Dolan, T.T. Gettinby, George Morzaria, S.P. Mwakima, F.N. Norval, R.A.I. Scott, J. Sherriff, A. Young, A.S. |
| author_facet | Young, A.S. Dolan, T.T. Morzaria, S.P. Mwakima, F.N. Norval, R.A.I. Scott, J. Sherriff, A. Gettinby, George |
| author_sort | Young, A.S. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A large database on the transmission of a stabilate of the Theileria parva Muguga stock from one breed of cattle using two stocks of Rhipicephalus appendiculatus, Muguga and O1 Pejeta was developed and analysed. Factors associated with the ticks and cattle, and the infections developing in cattle were studied in relation to the infection variables in the ticks batches harvested daily from cattle. Generalized Linear Interactive Modelling (GLIM) was used to determine the importance of factors and interactions in influencing the levels of tick infection variables using Type I and Type III sums of squares analyses. Analysis of the 6 varables, prevalence (percentage of ticks infected), abundance (mean number of infected salivary gland acini per tick examined) and intensity (mean number of infected salivary gland acini per infected tick) in batches of 30 male and 30 female ticks showed that 24 covariates, factors or interactions had a significant effect (P<0.05). Certain covariates and factors were particularly important for all 6 tick infection variables; parasitaemia of animal on the day of tick harvest, stabilate dilution administered to animal, month in which tick batch was harvested, minimum packed cell volume of animal over the sampling period, age of animal, and the minimum leukocyte count of the animal over the sampling period. The GLIM analyses were found to be a useful tool in identifying factors that influence infection levels and in devising methods of producing tick batches with more predictable infections. |
| format | Journal Article |
| id | CGSpace29387 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1996 |
| publishDateRange | 1996 |
| publishDateSort | 1996 |
| publisher | Cambridge University Press |
| publisherStr | Cambridge University Press |
| record_format | dspace |
| spelling | CGSpace293872024-11-15T08:52:31Z Factors influencing infections in Rhipicephalus appendiculatus ticks fed on cattle infected with Theileria parva Young, A.S. Dolan, T.T. Morzaria, S.P. Mwakima, F.N. Norval, R.A.I. Scott, J. Sherriff, A. Gettinby, George theileria parva rhipicephalus appendiculatus cattle metastigmata models database disease transmission A large database on the transmission of a stabilate of the Theileria parva Muguga stock from one breed of cattle using two stocks of Rhipicephalus appendiculatus, Muguga and O1 Pejeta was developed and analysed. Factors associated with the ticks and cattle, and the infections developing in cattle were studied in relation to the infection variables in the ticks batches harvested daily from cattle. Generalized Linear Interactive Modelling (GLIM) was used to determine the importance of factors and interactions in influencing the levels of tick infection variables using Type I and Type III sums of squares analyses. Analysis of the 6 varables, prevalence (percentage of ticks infected), abundance (mean number of infected salivary gland acini per tick examined) and intensity (mean number of infected salivary gland acini per infected tick) in batches of 30 male and 30 female ticks showed that 24 covariates, factors or interactions had a significant effect (P<0.05). Certain covariates and factors were particularly important for all 6 tick infection variables; parasitaemia of animal on the day of tick harvest, stabilate dilution administered to animal, month in which tick batch was harvested, minimum packed cell volume of animal over the sampling period, age of animal, and the minimum leukocyte count of the animal over the sampling period. The GLIM analyses were found to be a useful tool in identifying factors that influence infection levels and in devising methods of producing tick batches with more predictable infections. 1996-09 2013-06-11T09:23:23Z 2013-06-11T09:23:23Z Journal Article https://hdl.handle.net/10568/29387 en Limited Access Cambridge University Press Parasitology;113: 255-266 |
| spellingShingle | theileria parva rhipicephalus appendiculatus cattle metastigmata models database disease transmission Young, A.S. Dolan, T.T. Morzaria, S.P. Mwakima, F.N. Norval, R.A.I. Scott, J. Sherriff, A. Gettinby, George Factors influencing infections in Rhipicephalus appendiculatus ticks fed on cattle infected with Theileria parva |
| title | Factors influencing infections in Rhipicephalus appendiculatus ticks fed on cattle infected with Theileria parva |
| title_full | Factors influencing infections in Rhipicephalus appendiculatus ticks fed on cattle infected with Theileria parva |
| title_fullStr | Factors influencing infections in Rhipicephalus appendiculatus ticks fed on cattle infected with Theileria parva |
| title_full_unstemmed | Factors influencing infections in Rhipicephalus appendiculatus ticks fed on cattle infected with Theileria parva |
| title_short | Factors influencing infections in Rhipicephalus appendiculatus ticks fed on cattle infected with Theileria parva |
| title_sort | factors influencing infections in rhipicephalus appendiculatus ticks fed on cattle infected with theileria parva |
| topic | theileria parva rhipicephalus appendiculatus cattle metastigmata models database disease transmission |
| url | https://hdl.handle.net/10568/29387 |
| work_keys_str_mv | AT youngas factorsinfluencinginfectionsinrhipicephalusappendiculatusticksfedoncattleinfectedwiththeileriaparva AT dolantt factorsinfluencinginfectionsinrhipicephalusappendiculatusticksfedoncattleinfectedwiththeileriaparva AT morzariasp factorsinfluencinginfectionsinrhipicephalusappendiculatusticksfedoncattleinfectedwiththeileriaparva AT mwakimafn factorsinfluencinginfectionsinrhipicephalusappendiculatusticksfedoncattleinfectedwiththeileriaparva AT norvalrai factorsinfluencinginfectionsinrhipicephalusappendiculatusticksfedoncattleinfectedwiththeileriaparva AT scottj factorsinfluencinginfectionsinrhipicephalusappendiculatusticksfedoncattleinfectedwiththeileriaparva AT sherriffa factorsinfluencinginfectionsinrhipicephalusappendiculatusticksfedoncattleinfectedwiththeileriaparva AT gettinbygeorge factorsinfluencinginfectionsinrhipicephalusappendiculatusticksfedoncattleinfectedwiththeileriaparva |