Use of farmer recall versus direct measurement in gathering lactation data: Lessons from Kenyan smallholder dairy systems
The use of farmer-recall in field data collection typically allows for relatively quick and low-cost information gathering. Such data can often be gathered using a simple cross-sectional survey, in many cases requiring only a single farm visit. In return, however, there may be an increase in measure...
| Autores principales: | , |
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| Formato: | Conference Paper |
| Lenguaje: | Inglés |
| Publicado: |
British Society of Animal Science
1998
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/51291 |
| _version_ | 1855514112014942208 |
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| author | Staal, Steven J. Omore, Amos O. |
| author_browse | Omore, Amos O. Staal, Steven J. |
| author_facet | Staal, Steven J. Omore, Amos O. |
| author_sort | Staal, Steven J. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The use of farmer-recall in field data collection typically allows for relatively quick and low-cost information gathering. Such data can often be gathered using a simple cross-sectional survey, in many cases requiring only a single farm visit. In return, however, there may be an increase in measurement error and a decrease in the quality of the data in general, due to recall-error and lack of an established relationship between enumerator and respondent. More accurate data can only be gathered by direct measurement methods, and may require repeated farm visits to capture effects of seasonality or periodicity. The cost of using recall data in terms of reduced reliability of research results, however, may be reduced when there is a high degree of natural variability in the data. Under such circumstances, for example when gathering data for the estimation of lactation curves of cows on smallholder tropical farms where feed resources are poor and highly variable, the additional effort and cost of recording milk yields over a substantial portion of the lactation period may not be justified. The authors compare smallholder dairy lactation curves estimated from data gathered by two studies in Kiambu District in the Kenyan highlands to determine whether estimation of lactation curves from recall data necessarily yields less useful results compared to estimation using directly recorded longitudinally-gathered data. |
| format | Conference Paper |
| id | CGSpace51291 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1998 |
| publishDateRange | 1998 |
| publishDateSort | 1998 |
| publisher | British Society of Animal Science |
| publisherStr | British Society of Animal Science |
| record_format | dspace |
| spelling | CGSpace512912023-02-15T09:29:21Z Use of farmer recall versus direct measurement in gathering lactation data: Lessons from Kenyan smallholder dairy systems Staal, Steven J. Omore, Amos O. small farms lactation data collection dairy industry milk yield The use of farmer-recall in field data collection typically allows for relatively quick and low-cost information gathering. Such data can often be gathered using a simple cross-sectional survey, in many cases requiring only a single farm visit. In return, however, there may be an increase in measurement error and a decrease in the quality of the data in general, due to recall-error and lack of an established relationship between enumerator and respondent. More accurate data can only be gathered by direct measurement methods, and may require repeated farm visits to capture effects of seasonality or periodicity. The cost of using recall data in terms of reduced reliability of research results, however, may be reduced when there is a high degree of natural variability in the data. Under such circumstances, for example when gathering data for the estimation of lactation curves of cows on smallholder tropical farms where feed resources are poor and highly variable, the additional effort and cost of recording milk yields over a substantial portion of the lactation period may not be justified. The authors compare smallholder dairy lactation curves estimated from data gathered by two studies in Kiambu District in the Kenyan highlands to determine whether estimation of lactation curves from recall data necessarily yields less useful results compared to estimation using directly recorded longitudinally-gathered data. 1998 2014-10-31T06:22:22Z 2014-10-31T06:22:22Z Conference Paper https://hdl.handle.net/10568/51291 en Limited Access British Society of Animal Science |
| spellingShingle | small farms lactation data collection dairy industry milk yield Staal, Steven J. Omore, Amos O. Use of farmer recall versus direct measurement in gathering lactation data: Lessons from Kenyan smallholder dairy systems |
| title | Use of farmer recall versus direct measurement in gathering lactation data: Lessons from Kenyan smallholder dairy systems |
| title_full | Use of farmer recall versus direct measurement in gathering lactation data: Lessons from Kenyan smallholder dairy systems |
| title_fullStr | Use of farmer recall versus direct measurement in gathering lactation data: Lessons from Kenyan smallholder dairy systems |
| title_full_unstemmed | Use of farmer recall versus direct measurement in gathering lactation data: Lessons from Kenyan smallholder dairy systems |
| title_short | Use of farmer recall versus direct measurement in gathering lactation data: Lessons from Kenyan smallholder dairy systems |
| title_sort | use of farmer recall versus direct measurement in gathering lactation data lessons from kenyan smallholder dairy systems |
| topic | small farms lactation data collection dairy industry milk yield |
| url | https://hdl.handle.net/10568/51291 |
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