Relationship between the weight of reindeer calves in autumn and their mother's age and weight in the previous spring

Age and weight in dams aged less than 5 years old together explain 29% of variation in calves' weight in autumn. Each alone explains 22%. In dams aged 5 to 12 years, weight alone explains 22% while age alone explains only 0.4%. Weight followed by age does not significantly improve the fit in th...

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Published in:Rangifer
Main Authors: Lenvik, Dag, Bø, Esben, Fjellheim, Anders
Format: Article in Journal/Newspaper
Language:English
Published: Septentrio Academic Publishing 1988
Subjects:
Online Access:https://septentrio.uit.no/index.php/rangifer/article/view/733
https://doi.org/10.7557/2.8.1.733
id ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/733
record_format openpolar
spelling ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/733 2023-05-15T18:03:54+02:00 Relationship between the weight of reindeer calves in autumn and their mother's age and weight in the previous spring Lenvik, Dag Bø, Esben Fjellheim, Anders 1988-06-01 application/pdf https://septentrio.uit.no/index.php/rangifer/article/view/733 https://doi.org/10.7557/2.8.1.733 eng eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/733/694 https://septentrio.uit.no/index.php/rangifer/article/view/733 doi:10.7557/2.8.1.733 Copyright (c) 2015 Dag Lenvik, Esben Bø, Anders Fjellheim http://creativecommons.org/licenses/by/3.0/ CC-BY Rangifer; Årg 8 Nr 1 (1988); 20-24 Rangifer; Vol 8 No 1 (1988); 20-24 1890-6729 reindeer husbandry slaughtering strategy breeding breeding methods selection strategy info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1988 ftunitroemsoe https://doi.org/10.7557/2.8.1.733 2021-08-16T14:36:09Z Age and weight in dams aged less than 5 years old together explain 29% of variation in calves' weight in autumn. Each alone explains 22%. In dams aged 5 to 12 years, weight alone explains 22% while age alone explains only 0.4%. Weight followed by age does not significantly improve the fit in these. The implication of this regarding selection strategy is that the aim should be to ensure that the female populationof a herd should include that smallest possible proportion of 1 to 4 year olds. This age structure can be achieved by slaughtering as many calves (0.5 yr) and young females (1.5 yr) as possible. The lifespan of female recruits and the mean age of the female population of the herd are thus increased. This will also result in an increase in the mean weight of the female population, given that animals aged 5 to 10 years are heavier than 2 to 4 years olds.Reinkalvenes høstvekt relatert til mødrenes vårvekt og alder.Abstract in Norwegian / Sammendrag: For mødre yngre enn 5 år forklarer vekten og alderen sammen 29% av variasjonen i kalvenes høstvekt. Alene forklarer hver 22%. Fra 5 til 12 år forklarer vekten alene 19% mens alderen alene bare forklarer 0,4%. Her gir alder etter vekt ikke signifikant tillegg til forklaringen. For utvalgsstrategien har dette som konsekvns at aldersklassene ett til fire år skal utgjøre en minst mulig andel av hunndyrflokken samlet. Denne aldersstrukturen når man ved å konsentrere hovedslakteuttaket til kalve- og ungsimleårgangene (= 1/2 og 1 1/2 år). Omløpstiden forlenges og gjennomsnittsalderen heves derved innen simleflokken. Ved at aldersklassene mellom fem og ti år er tyngre enn aldersklassene to til fire år, leder dette også til en hevning av gjennomsnittsvekten innen simleflokken.Poronvasojen syksypainon riippuvuus emä n kevät-painosta ja iästä.Abstract in Finnish / Yhteenveto: Alle 5-vuotiaiden vaatimien paino ja ikä yhdessä selittävät 29% vasan syksypainon vaihtelusta. Kumpikin selittää erikseen 22%. 5-12 vuoden ikäisilla vaatimilla paino selittää yksistään 19%, mutta ikä vain 0,4%. Iän riippuvuus painosta ei selittänyt tätä merkisevästi. Valinnan kannalta on tärkeää, että lau-massa om pienin mahdollinen määrä 1-4 - vuotiaita naarasporoja tämä ikäjakautuma saavutetaan teuresta-malla syksyllä mahdollisimman paljon vasoja (0,5 - vuotiaita) ja nuoria naaraita 1,5 - vuotiaita). Naaraiden elinikä pitenee ja keski-ikä laumassa kasvaa. Tämä lisää myös naaraiden keskipainoa, sillä 5-10 vuotiaat naaraat ovat painavampia kuin 2-4 - vuoitaat. Article in Journal/Newspaper Rangifer reindeer husbandry University of Tromsø: Septentrio Academic Publishing Kalvenes ENVELOPE(21.980,21.980,69.948,69.948) Malla ENVELOPE(20.233,20.233,68.826,68.826) Rangifer 8 1 20
institution Open Polar
collection University of Tromsø: Septentrio Academic Publishing
op_collection_id ftunitroemsoe
language English
topic reindeer husbandry
slaughtering strategy
breeding
breeding methods
selection strategy
spellingShingle reindeer husbandry
slaughtering strategy
breeding
breeding methods
selection strategy
Lenvik, Dag
Bø, Esben
Fjellheim, Anders
Relationship between the weight of reindeer calves in autumn and their mother's age and weight in the previous spring
topic_facet reindeer husbandry
slaughtering strategy
breeding
breeding methods
selection strategy
description Age and weight in dams aged less than 5 years old together explain 29% of variation in calves' weight in autumn. Each alone explains 22%. In dams aged 5 to 12 years, weight alone explains 22% while age alone explains only 0.4%. Weight followed by age does not significantly improve the fit in these. The implication of this regarding selection strategy is that the aim should be to ensure that the female populationof a herd should include that smallest possible proportion of 1 to 4 year olds. This age structure can be achieved by slaughtering as many calves (0.5 yr) and young females (1.5 yr) as possible. The lifespan of female recruits and the mean age of the female population of the herd are thus increased. This will also result in an increase in the mean weight of the female population, given that animals aged 5 to 10 years are heavier than 2 to 4 years olds.Reinkalvenes høstvekt relatert til mødrenes vårvekt og alder.Abstract in Norwegian / Sammendrag: For mødre yngre enn 5 år forklarer vekten og alderen sammen 29% av variasjonen i kalvenes høstvekt. Alene forklarer hver 22%. Fra 5 til 12 år forklarer vekten alene 19% mens alderen alene bare forklarer 0,4%. Her gir alder etter vekt ikke signifikant tillegg til forklaringen. For utvalgsstrategien har dette som konsekvns at aldersklassene ett til fire år skal utgjøre en minst mulig andel av hunndyrflokken samlet. Denne aldersstrukturen når man ved å konsentrere hovedslakteuttaket til kalve- og ungsimleårgangene (= 1/2 og 1 1/2 år). Omløpstiden forlenges og gjennomsnittsalderen heves derved innen simleflokken. Ved at aldersklassene mellom fem og ti år er tyngre enn aldersklassene to til fire år, leder dette også til en hevning av gjennomsnittsvekten innen simleflokken.Poronvasojen syksypainon riippuvuus emä n kevät-painosta ja iästä.Abstract in Finnish / Yhteenveto: Alle 5-vuotiaiden vaatimien paino ja ikä yhdessä selittävät 29% vasan syksypainon vaihtelusta. Kumpikin selittää erikseen 22%. 5-12 vuoden ikäisilla vaatimilla paino selittää yksistään 19%, mutta ikä vain 0,4%. Iän riippuvuus painosta ei selittänyt tätä merkisevästi. Valinnan kannalta on tärkeää, että lau-massa om pienin mahdollinen määrä 1-4 - vuotiaita naarasporoja tämä ikäjakautuma saavutetaan teuresta-malla syksyllä mahdollisimman paljon vasoja (0,5 - vuotiaita) ja nuoria naaraita 1,5 - vuotiaita). Naaraiden elinikä pitenee ja keski-ikä laumassa kasvaa. Tämä lisää myös naaraiden keskipainoa, sillä 5-10 vuotiaat naaraat ovat painavampia kuin 2-4 - vuoitaat.
format Article in Journal/Newspaper
author Lenvik, Dag
Bø, Esben
Fjellheim, Anders
author_facet Lenvik, Dag
Bø, Esben
Fjellheim, Anders
author_sort Lenvik, Dag
title Relationship between the weight of reindeer calves in autumn and their mother's age and weight in the previous spring
title_short Relationship between the weight of reindeer calves in autumn and their mother's age and weight in the previous spring
title_full Relationship between the weight of reindeer calves in autumn and their mother's age and weight in the previous spring
title_fullStr Relationship between the weight of reindeer calves in autumn and their mother's age and weight in the previous spring
title_full_unstemmed Relationship between the weight of reindeer calves in autumn and their mother's age and weight in the previous spring
title_sort relationship between the weight of reindeer calves in autumn and their mother's age and weight in the previous spring
publisher Septentrio Academic Publishing
publishDate 1988
url https://septentrio.uit.no/index.php/rangifer/article/view/733
https://doi.org/10.7557/2.8.1.733
long_lat ENVELOPE(21.980,21.980,69.948,69.948)
ENVELOPE(20.233,20.233,68.826,68.826)
geographic Kalvenes
Malla
geographic_facet Kalvenes
Malla
genre Rangifer
reindeer husbandry
genre_facet Rangifer
reindeer husbandry
op_source Rangifer; Årg 8 Nr 1 (1988); 20-24
Rangifer; Vol 8 No 1 (1988); 20-24
1890-6729
op_relation https://septentrio.uit.no/index.php/rangifer/article/view/733/694
https://septentrio.uit.no/index.php/rangifer/article/view/733
doi:10.7557/2.8.1.733
op_rights Copyright (c) 2015 Dag Lenvik, Esben Bø, Anders Fjellheim
http://creativecommons.org/licenses/by/3.0/
op_rightsnorm CC-BY
op_doi https://doi.org/10.7557/2.8.1.733
container_title Rangifer
container_volume 8
container_issue 1
container_start_page 20
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