Fertility and twinning in Canadian reindeer
This study was carried out from 1976 to 1981 on the Mackenzie Delta reindeer herd with the co-operation of the owners, Canadian Reindeer Ltd., Tuktoyaktuk, Northwest Territories. The reproductive organs of 4050 female reindeer (Rangifer tarandus) were collected at slaughter. The pregnancy rates aver...
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Language: | English |
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Septentrio Academic Publishing
1986
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Online Access: | https://septentrio.uit.no/index.php/rangifer/article/view/639 https://doi.org/10.7557/2.6.2.639 |
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ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/639 2023-05-15T15:03:59+02:00 Fertility and twinning in Canadian reindeer Godkin, G. F. 1986-06-01 application/pdf https://septentrio.uit.no/index.php/rangifer/article/view/639 https://doi.org/10.7557/2.6.2.639 eng eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/639/608 https://septentrio.uit.no/index.php/rangifer/article/view/639 doi:10.7557/2.6.2.639 Copyright (c) 2015 G. F. Godkin http://creativecommons.org/licenses/by/3.0/ CC-BY Rangifer; Vol 6 (1986): Special Issue No. 1; 145-150 1890-6729 reindeer pregnancy rates twinning Canada fawn survival recruitment Arctic info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1986 ftunitroemsoe https://doi.org/10.7557/2.6.2.639 2021-08-16T14:32:20Z This study was carried out from 1976 to 1981 on the Mackenzie Delta reindeer herd with the co-operation of the owners, Canadian Reindeer Ltd., Tuktoyaktuk, Northwest Territories. The reproductive organs of 4050 female reindeer (Rangifer tarandus) were collected at slaughter. The pregnancy rates averaged 99.5% of the females examined. In the years 1978 and 1981, 24.7% (713) of the animals were carrying twins, as compared to a twinning rate of 0.4%) observed for the intervening years. Nineteen animals were not pregnant. Of these, 14 were emaciated with no gross pathology* of the reproductive tract. Five females had either a mummified fetus or uterine adhesions preventing a viable pregnancy. Estimated fawn survival rates from birth to June varied from 51.7 to 95.7%. Fawn survival from June to yearlings of June the next year varied from 51 to 86.4% as determined by count at roundup. Increment averaged 15.8% per year after a slaughter of 13.4% of the herd yearly. Article in Journal/Newspaper Arctic Mackenzie Delta Northwest Territories Rangifer Rangifer tarandus Tuktoyaktuk University of Tromsø: Septentrio Academic Publishing Arctic Canada Mackenzie Delta ENVELOPE(-136.672,-136.672,68.833,68.833) Northwest Territories Slaughter ENVELOPE(-85.633,-85.633,-78.617,-78.617) Tuktoyaktuk ENVELOPE(-133.006,-133.006,69.425,69.425) Rangifer 6 2 145 |
institution |
Open Polar |
collection |
University of Tromsø: Septentrio Academic Publishing |
op_collection_id |
ftunitroemsoe |
language |
English |
topic |
reindeer pregnancy rates twinning Canada fawn survival recruitment Arctic |
spellingShingle |
reindeer pregnancy rates twinning Canada fawn survival recruitment Arctic Godkin, G. F. Fertility and twinning in Canadian reindeer |
topic_facet |
reindeer pregnancy rates twinning Canada fawn survival recruitment Arctic |
description |
This study was carried out from 1976 to 1981 on the Mackenzie Delta reindeer herd with the co-operation of the owners, Canadian Reindeer Ltd., Tuktoyaktuk, Northwest Territories. The reproductive organs of 4050 female reindeer (Rangifer tarandus) were collected at slaughter. The pregnancy rates averaged 99.5% of the females examined. In the years 1978 and 1981, 24.7% (713) of the animals were carrying twins, as compared to a twinning rate of 0.4%) observed for the intervening years. Nineteen animals were not pregnant. Of these, 14 were emaciated with no gross pathology* of the reproductive tract. Five females had either a mummified fetus or uterine adhesions preventing a viable pregnancy. Estimated fawn survival rates from birth to June varied from 51.7 to 95.7%. Fawn survival from June to yearlings of June the next year varied from 51 to 86.4% as determined by count at roundup. Increment averaged 15.8% per year after a slaughter of 13.4% of the herd yearly. |
format |
Article in Journal/Newspaper |
author |
Godkin, G. F. |
author_facet |
Godkin, G. F. |
author_sort |
Godkin, G. F. |
title |
Fertility and twinning in Canadian reindeer |
title_short |
Fertility and twinning in Canadian reindeer |
title_full |
Fertility and twinning in Canadian reindeer |
title_fullStr |
Fertility and twinning in Canadian reindeer |
title_full_unstemmed |
Fertility and twinning in Canadian reindeer |
title_sort |
fertility and twinning in canadian reindeer |
publisher |
Septentrio Academic Publishing |
publishDate |
1986 |
url |
https://septentrio.uit.no/index.php/rangifer/article/view/639 https://doi.org/10.7557/2.6.2.639 |
long_lat |
ENVELOPE(-136.672,-136.672,68.833,68.833) ENVELOPE(-85.633,-85.633,-78.617,-78.617) ENVELOPE(-133.006,-133.006,69.425,69.425) |
geographic |
Arctic Canada Mackenzie Delta Northwest Territories Slaughter Tuktoyaktuk |
geographic_facet |
Arctic Canada Mackenzie Delta Northwest Territories Slaughter Tuktoyaktuk |
genre |
Arctic Mackenzie Delta Northwest Territories Rangifer Rangifer tarandus Tuktoyaktuk |
genre_facet |
Arctic Mackenzie Delta Northwest Territories Rangifer Rangifer tarandus Tuktoyaktuk |
op_source |
Rangifer; Vol 6 (1986): Special Issue No. 1; 145-150 1890-6729 |
op_relation |
https://septentrio.uit.no/index.php/rangifer/article/view/639/608 https://septentrio.uit.no/index.php/rangifer/article/view/639 doi:10.7557/2.6.2.639 |
op_rights |
Copyright (c) 2015 G. F. Godkin http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.7557/2.6.2.639 |
container_title |
Rangifer |
container_volume |
6 |
container_issue |
2 |
container_start_page |
145 |
_version_ |
1766335825829691392 |