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: Dag Lenvik, Esben Bø, Anders Fjellheim
Format: Article in Journal/Newspaper
Language:English
Published: Septentrio Academic Publishing 1988
Subjects:
Online Access:https://doi.org/10.7557/2.8.1.733
https://doaj.org/article/a3c431cd6f04493590a1f65ceebfd34d
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spelling ftdoajarticles:oai:doaj.org/article:a3c431cd6f04493590a1f65ceebfd34d 2023-05-15T18:04:02+02:00 Relationship between the weight of reindeer calves in autumn and their mother's age and weight in the previous spring Dag Lenvik Esben Bø Anders Fjellheim 1988-06-01T00:00:00Z https://doi.org/10.7557/2.8.1.733 https://doaj.org/article/a3c431cd6f04493590a1f65ceebfd34d EN eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/733 https://doaj.org/toc/1890-6729 doi:10.7557/2.8.1.733 1890-6729 https://doaj.org/article/a3c431cd6f04493590a1f65ceebfd34d Rangifer, Vol 8, Iss 1 (1988) reindeer husbandry slaughtering strategy breeding breeding methods selection strategy Animal culture SF1-1100 article 1988 ftdoajarticles https://doi.org/10.7557/2.8.1.733 2022-12-30T21:57:36Z 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 ... Article in Journal/Newspaper Rangifer reindeer husbandry Directory of Open Access Journals: DOAJ Articles Kalvenes ENVELOPE(21.980,21.980,69.948,69.948) Rangifer 8 1 20
institution Open Polar
collection Directory of Open Access Journals: DOAJ Articles
op_collection_id ftdoajarticles
language English
topic reindeer husbandry
slaughtering strategy
breeding
breeding methods
selection strategy
Animal culture
SF1-1100
spellingShingle reindeer husbandry
slaughtering strategy
breeding
breeding methods
selection strategy
Animal culture
SF1-1100
Dag Lenvik
Esben Bø
Anders Fjellheim
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
Animal culture
SF1-1100
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 ...
format Article in Journal/Newspaper
author Dag Lenvik
Esben Bø
Anders Fjellheim
author_facet Dag Lenvik
Esben Bø
Anders Fjellheim
author_sort Dag Lenvik
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://doi.org/10.7557/2.8.1.733
https://doaj.org/article/a3c431cd6f04493590a1f65ceebfd34d
long_lat ENVELOPE(21.980,21.980,69.948,69.948)
geographic Kalvenes
geographic_facet Kalvenes
genre Rangifer
reindeer husbandry
genre_facet Rangifer
reindeer husbandry
op_source Rangifer, Vol 8, Iss 1 (1988)
op_relation https://septentrio.uit.no/index.php/rangifer/article/view/733
https://doaj.org/toc/1890-6729
doi:10.7557/2.8.1.733
1890-6729
https://doaj.org/article/a3c431cd6f04493590a1f65ceebfd34d
op_doi https://doi.org/10.7557/2.8.1.733
container_title Rangifer
container_volume 8
container_issue 1
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