Causes of variation in growth rate of reindeer calves
Weights of individual reindeer calves were registered on 3 or 4 occasions from the July roundup to the last slaughter roundup in January during each of four consecutive years (1986 to 1989). The observations were made in a tagged herd located in the southern part of the reindeer area in Sweden (63°N...
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1993
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ftdoajarticles:oai:doaj.org/article:e695a49544b144e783637cada72dfadf 2023-05-15T18:04:01+02:00 Causes of variation in growth rate of reindeer calves C. J. Petersson B. Danell 1993-12-01T00:00:00Z https://doi.org/10.7557/2.13.2.1097 https://doaj.org/article/e695a49544b144e783637cada72dfadf EN eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/1097 https://doaj.org/toc/1890-6729 doi:10.7557/2.13.2.1097 1890-6729 https://doaj.org/article/e695a49544b144e783637cada72dfadf Rangifer, Vol 13, Iss 2 (1993) live weight dressing percentage reindeer calves growth rate Animal culture SF1-1100 article 1993 ftdoajarticles https://doi.org/10.7557/2.13.2.1097 2022-12-31T02:11:54Z Weights of individual reindeer calves were registered on 3 or 4 occasions from the July roundup to the last slaughter roundup in January during each of four consecutive years (1986 to 1989). The observations were made in a tagged herd located in the southern part of the reindeer area in Sweden (63°N, 12°E). A total of 10 400 live-weight measurements were made, and the relationship between pre-slaughter weight and carcass weight was estimated using data from 109 individuals. Variation in weight and weight gain between weighing occasions was related to sex, number of days in the corral, scale and year. Non-linear growth curves were fit to the adjusted weights. For each sex, smoothed average weights and dispersions, both within and between year, as well as the coefficient of variation were calculated from data generated from the estimated functions. Individual calf weights were shown to be influenced by sex, weighing day within occasion, and by year. Reindeer calves gained between 20 and 25 kg in live body weight from two to 6-8 months of age. Male calves were heavier than female calves over the whole period and they gained in live weight on average 10 g/day more than female calves. Between year coefficient of variation was between 1.5 and 7% with the largest variation between years for July and January weights and the lowest variation for September weights. The growth curves showed that the major increase in weight was between July and September. From September to December/January the additional increase was only 5%. Dressing-percentage was influenced by live weight prior to slaughter. A positive relationship between live weight and dressing percentage was shown. Article in Journal/Newspaper Rangifer Directory of Open Access Journals: DOAJ Articles Corral ENVELOPE(-62.950,-62.950,-64.900,-64.900) Slaughter ENVELOPE(-85.633,-85.633,-78.617,-78.617) Rangifer 13 3 105 |
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Directory of Open Access Journals: DOAJ Articles |
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language |
English |
topic |
live weight dressing percentage reindeer calves growth rate Animal culture SF1-1100 |
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live weight dressing percentage reindeer calves growth rate Animal culture SF1-1100 C. J. Petersson B. Danell Causes of variation in growth rate of reindeer calves |
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live weight dressing percentage reindeer calves growth rate Animal culture SF1-1100 |
description |
Weights of individual reindeer calves were registered on 3 or 4 occasions from the July roundup to the last slaughter roundup in January during each of four consecutive years (1986 to 1989). The observations were made in a tagged herd located in the southern part of the reindeer area in Sweden (63°N, 12°E). A total of 10 400 live-weight measurements were made, and the relationship between pre-slaughter weight and carcass weight was estimated using data from 109 individuals. Variation in weight and weight gain between weighing occasions was related to sex, number of days in the corral, scale and year. Non-linear growth curves were fit to the adjusted weights. For each sex, smoothed average weights and dispersions, both within and between year, as well as the coefficient of variation were calculated from data generated from the estimated functions. Individual calf weights were shown to be influenced by sex, weighing day within occasion, and by year. Reindeer calves gained between 20 and 25 kg in live body weight from two to 6-8 months of age. Male calves were heavier than female calves over the whole period and they gained in live weight on average 10 g/day more than female calves. Between year coefficient of variation was between 1.5 and 7% with the largest variation between years for July and January weights and the lowest variation for September weights. The growth curves showed that the major increase in weight was between July and September. From September to December/January the additional increase was only 5%. Dressing-percentage was influenced by live weight prior to slaughter. A positive relationship between live weight and dressing percentage was shown. |
format |
Article in Journal/Newspaper |
author |
C. J. Petersson B. Danell |
author_facet |
C. J. Petersson B. Danell |
author_sort |
C. J. Petersson |
title |
Causes of variation in growth rate of reindeer calves |
title_short |
Causes of variation in growth rate of reindeer calves |
title_full |
Causes of variation in growth rate of reindeer calves |
title_fullStr |
Causes of variation in growth rate of reindeer calves |
title_full_unstemmed |
Causes of variation in growth rate of reindeer calves |
title_sort |
causes of variation in growth rate of reindeer calves |
publisher |
Septentrio Academic Publishing |
publishDate |
1993 |
url |
https://doi.org/10.7557/2.13.2.1097 https://doaj.org/article/e695a49544b144e783637cada72dfadf |
long_lat |
ENVELOPE(-62.950,-62.950,-64.900,-64.900) ENVELOPE(-85.633,-85.633,-78.617,-78.617) |
geographic |
Corral Slaughter |
geographic_facet |
Corral Slaughter |
genre |
Rangifer |
genre_facet |
Rangifer |
op_source |
Rangifer, Vol 13, Iss 2 (1993) |
op_relation |
https://septentrio.uit.no/index.php/rangifer/article/view/1097 https://doaj.org/toc/1890-6729 doi:10.7557/2.13.2.1097 1890-6729 https://doaj.org/article/e695a49544b144e783637cada72dfadf |
op_doi |
https://doi.org/10.7557/2.13.2.1097 |
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Rangifer |
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13 |
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3 |
container_start_page |
105 |
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1766175245400539136 |