Why shorten calving intervals on smallholder dairy farms in East Africa?
In European dairy herds lactation curves are conventionally described by a gamma function such as that of Wood (1969). High yields in early lactation mean that more frequent calving leads to increased annual milk production (AMP) per cow. Thus, the optimum calving interval in the UK is 365 days (Ess...
| Autores principales: | , , |
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| Formato: | Conference Paper |
| Lenguaje: | Inglés |
| Publicado: |
British Society of Animal Science
1998
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| Acceso en línea: | https://hdl.handle.net/10568/51319 |
| _version_ | 1855542958554611712 |
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| author | Tanner, J.C. McCarthy, N.A. Omore, Amos O. |
| author_browse | McCarthy, N.A. Omore, Amos O. Tanner, J.C. |
| author_facet | Tanner, J.C. McCarthy, N.A. Omore, Amos O. |
| author_sort | Tanner, J.C. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | In European dairy herds lactation curves are conventionally described by a gamma function such as that of Wood (1969). High yields in early lactation mean that more frequent calving leads to increased annual milk production (AMP) per cow. Thus, the optimum calving interval in the UK is 365 days (Esslemont et al, 1985) Studies on smallholder dairy farms in E. Africa (e.g. Omore, 1996; Staal et al., 1997) indicate that a large proportion of high-grade exotic dairy cows display lactations which collapse to a prolonged, but stable profile described by a logarithmic function. Extension services in Kenya recommend that farmers shorten their calving interval (CI) from a current average of 590 days (Staal et al., 1997) to a target of 365 days. Given the absence of high early lactation yields what benefits can be gained from the greater investment required to reduce CI on smallholdings? |
| format | Conference Paper |
| id | CGSpace51319 |
| 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 | CGSpace513192021-08-09T07:57:21Z Why shorten calving intervals on smallholder dairy farms in East Africa? Tanner, J.C. McCarthy, N.A. Omore, Amos O. small farms calving interval lactation dairy industry In European dairy herds lactation curves are conventionally described by a gamma function such as that of Wood (1969). High yields in early lactation mean that more frequent calving leads to increased annual milk production (AMP) per cow. Thus, the optimum calving interval in the UK is 365 days (Esslemont et al, 1985) Studies on smallholder dairy farms in E. Africa (e.g. Omore, 1996; Staal et al., 1997) indicate that a large proportion of high-grade exotic dairy cows display lactations which collapse to a prolonged, but stable profile described by a logarithmic function. Extension services in Kenya recommend that farmers shorten their calving interval (CI) from a current average of 590 days (Staal et al., 1997) to a target of 365 days. Given the absence of high early lactation yields what benefits can be gained from the greater investment required to reduce CI on smallholdings? 1998 2014-10-31T06:22:24Z 2014-10-31T06:22:24Z Conference Paper https://hdl.handle.net/10568/51319 en Limited Access British Society of Animal Science |
| spellingShingle | small farms calving interval lactation dairy industry Tanner, J.C. McCarthy, N.A. Omore, Amos O. Why shorten calving intervals on smallholder dairy farms in East Africa? |
| title | Why shorten calving intervals on smallholder dairy farms in East Africa? |
| title_full | Why shorten calving intervals on smallholder dairy farms in East Africa? |
| title_fullStr | Why shorten calving intervals on smallholder dairy farms in East Africa? |
| title_full_unstemmed | Why shorten calving intervals on smallholder dairy farms in East Africa? |
| title_short | Why shorten calving intervals on smallholder dairy farms in East Africa? |
| title_sort | why shorten calving intervals on smallholder dairy farms in east africa |
| topic | small farms calving interval lactation dairy industry |
| url | https://hdl.handle.net/10568/51319 |
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