Plasma progesterone and blood metabolite profiles in post-partum small East African Zebu cows
Plasma progesterone profiles were used to monitor post-partum reproductive activity in 12 Small East African Zebu (Bos indicus) cows allocated to either supplementary or no supplementary feeding (control) with continious or restricted (twice daily) suckling regimes. Intact bulls were used for breedi...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Springer
1993
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/29742 |
| _version_ | 1855534223189868544 |
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| author | Tegegne, Azage Entwistle, K.W. Mukasa-Mugerwa, E. |
| author_browse | Entwistle, K.W. Mukasa-Mugerwa, E. Tegegne, Azage |
| author_facet | Tegegne, Azage Entwistle, K.W. Mukasa-Mugerwa, E. |
| author_sort | Tegegne, Azage |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Plasma progesterone profiles were used to monitor post-partum reproductive activity in 12 Small East African Zebu (Bos indicus) cows allocated to either supplementary or no supplementary feeding (control) with continious or restricted (twice daily) suckling regimes. Intact bulls were used for breeding. Blood samples were collected 3 times a week for 33 weeks to determine blood metabolite concentrations. Plasma progesterone levels remained below 1 ng/ml until week 12 post-partum. Only 5 cows showed ovarian activity over the 33 week period. Cows that cycled expressed irregular and short-lived progesterone rises lasting 8 to 12 days prior to establishment of normal patterns of progesterone secretion where progesterone levels ranged from 8 to 10 ng/ml in cows with normal cycles. Plasma total protein, albumin, globulin, blood urea nitrogen and glucose levels varied over time without consistent trends, and were not influenced by either supplementary feeding of suckling regimes, nor differed between cyclic and acyclic cows. It was concluded that extended post-partum anoestrus, conception failure and early embryonic mortality were responsible for lowered reproductive efficiency in zebu cows. Blood metabolite concentrations were not good indicators of nutritional status and were not related to post-partum ovarian activity. |
| format | Journal Article |
| id | CGSpace29742 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1993 |
| publishDateRange | 1993 |
| publishDateSort | 1993 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace297422024-04-25T06:01:28Z Plasma progesterone and blood metabolite profiles in post-partum small East African Zebu cows Tegegne, Azage Entwistle, K.W. Mukasa-Mugerwa, E. cows zebu cattle small east african zebu progesterone plasma reproductive performance metabolites oestrous cycle supplementary feeding Plasma progesterone profiles were used to monitor post-partum reproductive activity in 12 Small East African Zebu (Bos indicus) cows allocated to either supplementary or no supplementary feeding (control) with continious or restricted (twice daily) suckling regimes. Intact bulls were used for breeding. Blood samples were collected 3 times a week for 33 weeks to determine blood metabolite concentrations. Plasma progesterone levels remained below 1 ng/ml until week 12 post-partum. Only 5 cows showed ovarian activity over the 33 week period. Cows that cycled expressed irregular and short-lived progesterone rises lasting 8 to 12 days prior to establishment of normal patterns of progesterone secretion where progesterone levels ranged from 8 to 10 ng/ml in cows with normal cycles. Plasma total protein, albumin, globulin, blood urea nitrogen and glucose levels varied over time without consistent trends, and were not influenced by either supplementary feeding of suckling regimes, nor differed between cyclic and acyclic cows. It was concluded that extended post-partum anoestrus, conception failure and early embryonic mortality were responsible for lowered reproductive efficiency in zebu cows. Blood metabolite concentrations were not good indicators of nutritional status and were not related to post-partum ovarian activity. 1993-06 2013-06-11T09:24:42Z 2013-06-11T09:24:42Z Journal Article https://hdl.handle.net/10568/29742 en Limited Access Springer Tropical Animal Health and Production;25(2): 101-110 |
| spellingShingle | cows zebu cattle small east african zebu progesterone plasma reproductive performance metabolites oestrous cycle supplementary feeding Tegegne, Azage Entwistle, K.W. Mukasa-Mugerwa, E. Plasma progesterone and blood metabolite profiles in post-partum small East African Zebu cows |
| title | Plasma progesterone and blood metabolite profiles in post-partum small East African Zebu cows |
| title_full | Plasma progesterone and blood metabolite profiles in post-partum small East African Zebu cows |
| title_fullStr | Plasma progesterone and blood metabolite profiles in post-partum small East African Zebu cows |
| title_full_unstemmed | Plasma progesterone and blood metabolite profiles in post-partum small East African Zebu cows |
| title_short | Plasma progesterone and blood metabolite profiles in post-partum small East African Zebu cows |
| title_sort | plasma progesterone and blood metabolite profiles in post partum small east african zebu cows |
| topic | cows zebu cattle small east african zebu progesterone plasma reproductive performance metabolites oestrous cycle supplementary feeding |
| url | https://hdl.handle.net/10568/29742 |
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