Associations between annual and seasonal variations in body mass and reproductive success and blood biochemical parameters in semi-domesticated reindeer
The main objective of the study was to follow reproductive performance and blood biochemical parameters associated with fat and carbohydrate metabolism in a herd of free-ranging, semi-domesticated reindeer (Rangifer tarandus tarandus) over a two-year period, with extreme between-year variation in fo...
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Septentrio Academic Publishing
2009
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Online Access: | https://doi.org/10.7557/2.29.1.210 https://doaj.org/article/622e831fa48f4dbf8043b13d9eecdf87 |
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ftdoajarticles:oai:doaj.org/article:622e831fa48f4dbf8043b13d9eecdf87 2023-05-15T18:04:02+02:00 Associations between annual and seasonal variations in body mass and reproductive success and blood biochemical parameters in semi-domesticated reindeer Ingrid H. Holmøy Øystein Holand Stein I. Thoresen Ellen Dahl Erik Ropstad 2009-12-01T00:00:00Z https://doi.org/10.7557/2.29.1.210 https://doaj.org/article/622e831fa48f4dbf8043b13d9eecdf87 EN eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/210 https://doaj.org/toc/1890-6729 doi:10.7557/2.29.1.210 1890-6729 https://doaj.org/article/622e831fa48f4dbf8043b13d9eecdf87 Rangifer, Vol 29, Iss 1 (2009) body condition calf survival luteal function nutritional status pasture condition Rangifer Animal culture SF1-1100 article 2009 ftdoajarticles https://doi.org/10.7557/2.29.1.210 2022-12-31T00:26:14Z The main objective of the study was to follow reproductive performance and blood biochemical parameters associated with fat and carbohydrate metabolism in a herd of free-ranging, semi-domesticated reindeer (Rangifer tarandus tarandus) over a two-year period, with extreme between-year variation in forage availability. The effects of climatic factors on reindeer reproductive performance were investigated by analysing whether time of onset of luteal function in autumn and calf survival were associated with changes in body mass and weather conditions, such as snow depth, precipitation, and temperature. Considerable between-year variation in the onset of luteal activity was found. In 1997, 4.2% of the female reindeer were either cycling or pregnant in the second week of October, whilst in 1998, in the same week, 100% were cycling or pregnant. Although energy balance was important for timing of the onset of luteal activity, delayed conception had no apparent effect on calf survival. The results indicated that maternal body mass (BM) in spring was of primary importance for calf survival, and the productivity of the herd. Since climatic factors influence the availability of forage, and hence female BM, it also has an indirect impact on calf survival. Females with low BM demonstrated greater seasonal variation in BM than heavier females. Plasma concentrations of free fatty acids and β-hydroxy butyric acid responded to changes in forage availability, but the initial condition of the reindeer and their fat reserves also seemed to have a major influence on these parameters. Abstract in Norwegian / Sammendrag: Sammenheng mellom års- og sesongvariasjon i kroppsvekt og henholdsvis reproduksjonssuksess og biokjemiske blodparametre hos tamrein Hovedformålet med studien var å følge reproduksjonen og blodparametre knyttet til fett og karbohydratmetabolismen hos en tamreinflokk (Rangifer tarandus tarandus) gjennom en toårs periode med stor årlig variasjon i næringstilgang. Effekten av klima på reinens reproduksjonssuksess ble ... Article in Journal/Newspaper Rangifer Rangifer tarandus Directory of Open Access Journals: DOAJ Articles Rangifer 29 1 51 61 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
body condition calf survival luteal function nutritional status pasture condition Rangifer Animal culture SF1-1100 |
spellingShingle |
body condition calf survival luteal function nutritional status pasture condition Rangifer Animal culture SF1-1100 Ingrid H. Holmøy Øystein Holand Stein I. Thoresen Ellen Dahl Erik Ropstad Associations between annual and seasonal variations in body mass and reproductive success and blood biochemical parameters in semi-domesticated reindeer |
topic_facet |
body condition calf survival luteal function nutritional status pasture condition Rangifer Animal culture SF1-1100 |
description |
The main objective of the study was to follow reproductive performance and blood biochemical parameters associated with fat and carbohydrate metabolism in a herd of free-ranging, semi-domesticated reindeer (Rangifer tarandus tarandus) over a two-year period, with extreme between-year variation in forage availability. The effects of climatic factors on reindeer reproductive performance were investigated by analysing whether time of onset of luteal function in autumn and calf survival were associated with changes in body mass and weather conditions, such as snow depth, precipitation, and temperature. Considerable between-year variation in the onset of luteal activity was found. In 1997, 4.2% of the female reindeer were either cycling or pregnant in the second week of October, whilst in 1998, in the same week, 100% were cycling or pregnant. Although energy balance was important for timing of the onset of luteal activity, delayed conception had no apparent effect on calf survival. The results indicated that maternal body mass (BM) in spring was of primary importance for calf survival, and the productivity of the herd. Since climatic factors influence the availability of forage, and hence female BM, it also has an indirect impact on calf survival. Females with low BM demonstrated greater seasonal variation in BM than heavier females. Plasma concentrations of free fatty acids and β-hydroxy butyric acid responded to changes in forage availability, but the initial condition of the reindeer and their fat reserves also seemed to have a major influence on these parameters. Abstract in Norwegian / Sammendrag: Sammenheng mellom års- og sesongvariasjon i kroppsvekt og henholdsvis reproduksjonssuksess og biokjemiske blodparametre hos tamrein Hovedformålet med studien var å følge reproduksjonen og blodparametre knyttet til fett og karbohydratmetabolismen hos en tamreinflokk (Rangifer tarandus tarandus) gjennom en toårs periode med stor årlig variasjon i næringstilgang. Effekten av klima på reinens reproduksjonssuksess ble ... |
format |
Article in Journal/Newspaper |
author |
Ingrid H. Holmøy Øystein Holand Stein I. Thoresen Ellen Dahl Erik Ropstad |
author_facet |
Ingrid H. Holmøy Øystein Holand Stein I. Thoresen Ellen Dahl Erik Ropstad |
author_sort |
Ingrid H. Holmøy |
title |
Associations between annual and seasonal variations in body mass and reproductive success and blood biochemical parameters in semi-domesticated reindeer |
title_short |
Associations between annual and seasonal variations in body mass and reproductive success and blood biochemical parameters in semi-domesticated reindeer |
title_full |
Associations between annual and seasonal variations in body mass and reproductive success and blood biochemical parameters in semi-domesticated reindeer |
title_fullStr |
Associations between annual and seasonal variations in body mass and reproductive success and blood biochemical parameters in semi-domesticated reindeer |
title_full_unstemmed |
Associations between annual and seasonal variations in body mass and reproductive success and blood biochemical parameters in semi-domesticated reindeer |
title_sort |
associations between annual and seasonal variations in body mass and reproductive success and blood biochemical parameters in semi-domesticated reindeer |
publisher |
Septentrio Academic Publishing |
publishDate |
2009 |
url |
https://doi.org/10.7557/2.29.1.210 https://doaj.org/article/622e831fa48f4dbf8043b13d9eecdf87 |
genre |
Rangifer Rangifer tarandus |
genre_facet |
Rangifer Rangifer tarandus |
op_source |
Rangifer, Vol 29, Iss 1 (2009) |
op_relation |
https://septentrio.uit.no/index.php/rangifer/article/view/210 https://doaj.org/toc/1890-6729 doi:10.7557/2.29.1.210 1890-6729 https://doaj.org/article/622e831fa48f4dbf8043b13d9eecdf87 |
op_doi |
https://doi.org/10.7557/2.29.1.210 |
container_title |
Rangifer |
container_volume |
29 |
container_issue |
1 |
container_start_page |
51 |
op_container_end_page |
61 |
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1766175283478528000 |