Effects of castration on growth and food intake cycles in young male reindeer ( Rangifer tarandus tarandus )
To establish whether testicular factors are essential for the regulation of the growth cycle of reindeer, we investigated changes in food intake and body weight in intact and castrated males from March to December. The castrates gained less weight than the intact animals during summer, and during la...
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Canadian Science Publishing
1982
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crcansciencepubl:10.1139/z82-128 2023-12-17T10:49:08+01:00 Effects of castration on growth and food intake cycles in young male reindeer ( Rangifer tarandus tarandus ) Ryg, Morten Jacobsen, Endre 1982 http://dx.doi.org/10.1139/z82-128 http://www.nrcresearchpress.com/doi/pdf/10.1139/z82-128 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 60, issue 5, page 942-945 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1982 crcansciencepubl https://doi.org/10.1139/z82-128 2023-11-19T13:39:03Z To establish whether testicular factors are essential for the regulation of the growth cycle of reindeer, we investigated changes in food intake and body weight in intact and castrated males from March to December. The castrates gained less weight than the intact animals during summer, and during late summer food intake was lower in the castrates. During late September and early October, coinciding with testosterone peaks, the intact animals lost weight, whereas the weight of the castrates was stable. In spite of these differences, cyclic changes in food intake and rate of weight gain was seen also in the castrates. The regulation of the growth cycle in male reindeer can therefore only partly be dependent on testicular factors. Article in Journal/Newspaper Rangifer tarandus Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 60 5 942 945 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Ryg, Morten Jacobsen, Endre Effects of castration on growth and food intake cycles in young male reindeer ( Rangifer tarandus tarandus ) |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
To establish whether testicular factors are essential for the regulation of the growth cycle of reindeer, we investigated changes in food intake and body weight in intact and castrated males from March to December. The castrates gained less weight than the intact animals during summer, and during late summer food intake was lower in the castrates. During late September and early October, coinciding with testosterone peaks, the intact animals lost weight, whereas the weight of the castrates was stable. In spite of these differences, cyclic changes in food intake and rate of weight gain was seen also in the castrates. The regulation of the growth cycle in male reindeer can therefore only partly be dependent on testicular factors. |
format |
Article in Journal/Newspaper |
author |
Ryg, Morten Jacobsen, Endre |
author_facet |
Ryg, Morten Jacobsen, Endre |
author_sort |
Ryg, Morten |
title |
Effects of castration on growth and food intake cycles in young male reindeer ( Rangifer tarandus tarandus ) |
title_short |
Effects of castration on growth and food intake cycles in young male reindeer ( Rangifer tarandus tarandus ) |
title_full |
Effects of castration on growth and food intake cycles in young male reindeer ( Rangifer tarandus tarandus ) |
title_fullStr |
Effects of castration on growth and food intake cycles in young male reindeer ( Rangifer tarandus tarandus ) |
title_full_unstemmed |
Effects of castration on growth and food intake cycles in young male reindeer ( Rangifer tarandus tarandus ) |
title_sort |
effects of castration on growth and food intake cycles in young male reindeer ( rangifer tarandus tarandus ) |
publisher |
Canadian Science Publishing |
publishDate |
1982 |
url |
http://dx.doi.org/10.1139/z82-128 http://www.nrcresearchpress.com/doi/pdf/10.1139/z82-128 |
genre |
Rangifer tarandus |
genre_facet |
Rangifer tarandus |
op_source |
Canadian Journal of Zoology volume 60, issue 5, page 942-945 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z82-128 |
container_title |
Canadian Journal of Zoology |
container_volume |
60 |
container_issue |
5 |
container_start_page |
942 |
op_container_end_page |
945 |
_version_ |
1785573499377549312 |