The Postpartum Reproductive Status of Dairy Cows in Two Areas in Iceland(*)
The paper describes the postpartum (pp) reproductive performance of 252 dairy cows in 2 areas in Iceland, in the north (Eyjafjörður) and in the south (Skeið), during a 12 months period. First pp ovulation occurred significantly earlier in primiparous cows, in cows in Skeið and in cows that calved in...
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1986
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8189366/ http://www.ncbi.nlm.nih.gov/pubmed/3565203 https://doi.org/10.1186/BF03548156 |
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ftpubmed:oai:pubmedcentral.nih.gov:8189366 2023-05-15T16:47:50+02:00 The Postpartum Reproductive Status of Dairy Cows in Two Areas in Iceland(*) Eldon, Jón Ólafsson, Thorsteinn 1986-09-01 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8189366/ http://www.ncbi.nlm.nih.gov/pubmed/3565203 https://doi.org/10.1186/BF03548156 en eng BioMed Central http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8189366/ http://www.ncbi.nlm.nih.gov/pubmed/3565203 http://dx.doi.org/10.1186/BF03548156 © The Author(s) 1986 Acta Vet Scand Article Text 1986 ftpubmed https://doi.org/10.1186/BF03548156 2021-06-13T00:46:32Z The paper describes the postpartum (pp) reproductive performance of 252 dairy cows in 2 areas in Iceland, in the north (Eyjafjörður) and in the south (Skeið), during a 12 months period. First pp ovulation occurred significantly earlier in primiparous cows, in cows in Skeið and in cows that calved in September—November. The average time of first pp artificial insemination (ai) was 72 days in both areas. Conception rate to first ai in these cows was 58 % in Eyjafjörður and 53 % in Skeið and the number of ai per conception was 1.6 and 1.8, respectively. In Eyjafjörður, 23 % of the cows were inseminated at the time of first pp ovulation. Sixtytwo percent of these cows conceived. In Skeið, 20 cows were inseminated at the time of first pp ovulation, and 9 or 45 % of these cows conceived. The interval from calving to conception was, on the average, 92 days in Eyjafjörður and 100 days in Skeið. Comparison of results from individual farms showed increase in number of conceptions to first pp ai (35–72 %) and decrease in number of services per conception (2.0–1.3) with increased mean number of days from calving to first ai (62–82 days). Text Iceland PubMed Central (PMC) Eyjafjörður ENVELOPE(-18.150,-18.150,65.500,65.500) Acta Veterinaria Scandinavica 27 3 421 439 |
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Article Eldon, Jón Ólafsson, Thorsteinn The Postpartum Reproductive Status of Dairy Cows in Two Areas in Iceland(*) |
topic_facet |
Article |
description |
The paper describes the postpartum (pp) reproductive performance of 252 dairy cows in 2 areas in Iceland, in the north (Eyjafjörður) and in the south (Skeið), during a 12 months period. First pp ovulation occurred significantly earlier in primiparous cows, in cows in Skeið and in cows that calved in September—November. The average time of first pp artificial insemination (ai) was 72 days in both areas. Conception rate to first ai in these cows was 58 % in Eyjafjörður and 53 % in Skeið and the number of ai per conception was 1.6 and 1.8, respectively. In Eyjafjörður, 23 % of the cows were inseminated at the time of first pp ovulation. Sixtytwo percent of these cows conceived. In Skeið, 20 cows were inseminated at the time of first pp ovulation, and 9 or 45 % of these cows conceived. The interval from calving to conception was, on the average, 92 days in Eyjafjörður and 100 days in Skeið. Comparison of results from individual farms showed increase in number of conceptions to first pp ai (35–72 %) and decrease in number of services per conception (2.0–1.3) with increased mean number of days from calving to first ai (62–82 days). |
format |
Text |
author |
Eldon, Jón Ólafsson, Thorsteinn |
author_facet |
Eldon, Jón Ólafsson, Thorsteinn |
author_sort |
Eldon, Jón |
title |
The Postpartum Reproductive Status of Dairy Cows in Two Areas in Iceland(*) |
title_short |
The Postpartum Reproductive Status of Dairy Cows in Two Areas in Iceland(*) |
title_full |
The Postpartum Reproductive Status of Dairy Cows in Two Areas in Iceland(*) |
title_fullStr |
The Postpartum Reproductive Status of Dairy Cows in Two Areas in Iceland(*) |
title_full_unstemmed |
The Postpartum Reproductive Status of Dairy Cows in Two Areas in Iceland(*) |
title_sort |
postpartum reproductive status of dairy cows in two areas in iceland(*) |
publisher |
BioMed Central |
publishDate |
1986 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8189366/ http://www.ncbi.nlm.nih.gov/pubmed/3565203 https://doi.org/10.1186/BF03548156 |
long_lat |
ENVELOPE(-18.150,-18.150,65.500,65.500) |
geographic |
Eyjafjörður |
geographic_facet |
Eyjafjörður |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Acta Vet Scand |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8189366/ http://www.ncbi.nlm.nih.gov/pubmed/3565203 http://dx.doi.org/10.1186/BF03548156 |
op_rights |
© The Author(s) 1986 |
op_doi |
https://doi.org/10.1186/BF03548156 |
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Acta Veterinaria Scandinavica |
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27 |
container_issue |
3 |
container_start_page |
421 |
op_container_end_page |
439 |
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1766037931867242496 |