Value of early weight measurements as predictors of body weight at later ages in reindeer
Phenotypic variances in live weight in a reindeer population and repeatabilities of the weights were estimated. The population consisted of 1847 and 1878 unselected male and female calves respectively, for which data from weighings at 2 and 7 months of age were available. All individuals in a select...
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Language: | English |
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Septentrio Academic Publishing
1993
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Online Access: | https://septentrio.uit.no/index.php/rangifer/article/view/1115 https://doi.org/10.7557/2.13.4.1115 |
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ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/1115 2023-05-15T18:03:54+02:00 Value of early weight measurements as predictors of body weight at later ages in reindeer Petersson, C.J. Danell, B. 1993-12-01 application/pdf https://septentrio.uit.no/index.php/rangifer/article/view/1115 https://doi.org/10.7557/2.13.4.1115 eng eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/1115/1060 https://septentrio.uit.no/index.php/rangifer/article/view/1115 doi:10.7557/2.13.4.1115 Copyright (c) 2015 C.J. Petersson, B. Danell http://creativecommons.org/licenses/by/3.0/ CC-BY Rangifer; Årg 13 Nr 4 (1993); 191-201 Rangifer; Vol 13 No 4 (1993); 191-201 1890-6729 selection repeatability reindeer weight selection info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1993 ftunitroemsoe https://doi.org/10.7557/2.13.4.1115 2021-08-16T14:50:25Z Phenotypic variances in live weight in a reindeer population and repeatabilities of the weights were estimated. The population consisted of 1847 and 1878 unselected male and female calves respectively, for which data from weighings at 2 and 7 months of age were available. All individuals in a selected population, consisting of 469 of the heaviest females, were weighed at 2, 7 and 19 months of age. The data were colleted during four successive years, 1986 - 1989. An indirect selection model for improving female weight at 19 months of age was proposed. Variance in the unselected population was higher between animals than within animals. Repeatability was estimated to be 0.636 for the male calves and 0.609 for the female calves. In the selected population, within-individual variance was higher than between-animal variance. Repeatabilities were, after correction for the effect of selection, 0.316 (between 2 and 19 months) and 0.548 (between 7 and 19 months). The aim of the selection model was to increase the average weight in the primiparous group to improve their calf production ability. Using the model, the number of animals weighing equal to or more than a certain threshold weight and the number needed for recruitment at 19 months of age could be determined. Article in Journal/Newspaper Rangifer University of Tromsø: Septentrio Academic Publishing Rangifer 13 5 191 |
institution |
Open Polar |
collection |
University of Tromsø: Septentrio Academic Publishing |
op_collection_id |
ftunitroemsoe |
language |
English |
topic |
selection repeatability reindeer weight selection |
spellingShingle |
selection repeatability reindeer weight selection Petersson, C.J. Danell, B. Value of early weight measurements as predictors of body weight at later ages in reindeer |
topic_facet |
selection repeatability reindeer weight selection |
description |
Phenotypic variances in live weight in a reindeer population and repeatabilities of the weights were estimated. The population consisted of 1847 and 1878 unselected male and female calves respectively, for which data from weighings at 2 and 7 months of age were available. All individuals in a selected population, consisting of 469 of the heaviest females, were weighed at 2, 7 and 19 months of age. The data were colleted during four successive years, 1986 - 1989. An indirect selection model for improving female weight at 19 months of age was proposed. Variance in the unselected population was higher between animals than within animals. Repeatability was estimated to be 0.636 for the male calves and 0.609 for the female calves. In the selected population, within-individual variance was higher than between-animal variance. Repeatabilities were, after correction for the effect of selection, 0.316 (between 2 and 19 months) and 0.548 (between 7 and 19 months). The aim of the selection model was to increase the average weight in the primiparous group to improve their calf production ability. Using the model, the number of animals weighing equal to or more than a certain threshold weight and the number needed for recruitment at 19 months of age could be determined. |
format |
Article in Journal/Newspaper |
author |
Petersson, C.J. Danell, B. |
author_facet |
Petersson, C.J. Danell, B. |
author_sort |
Petersson, C.J. |
title |
Value of early weight measurements as predictors of body weight at later ages in reindeer |
title_short |
Value of early weight measurements as predictors of body weight at later ages in reindeer |
title_full |
Value of early weight measurements as predictors of body weight at later ages in reindeer |
title_fullStr |
Value of early weight measurements as predictors of body weight at later ages in reindeer |
title_full_unstemmed |
Value of early weight measurements as predictors of body weight at later ages in reindeer |
title_sort |
value of early weight measurements as predictors of body weight at later ages in reindeer |
publisher |
Septentrio Academic Publishing |
publishDate |
1993 |
url |
https://septentrio.uit.no/index.php/rangifer/article/view/1115 https://doi.org/10.7557/2.13.4.1115 |
genre |
Rangifer |
genre_facet |
Rangifer |
op_source |
Rangifer; Årg 13 Nr 4 (1993); 191-201 Rangifer; Vol 13 No 4 (1993); 191-201 1890-6729 |
op_relation |
https://septentrio.uit.no/index.php/rangifer/article/view/1115/1060 https://septentrio.uit.no/index.php/rangifer/article/view/1115 doi:10.7557/2.13.4.1115 |
op_rights |
Copyright (c) 2015 C.J. Petersson, B. Danell http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.7557/2.13.4.1115 |
container_title |
Rangifer |
container_volume |
13 |
container_issue |
5 |
container_start_page |
191 |
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1766175009370275840 |