The relative effectiveness of two expanding bullet designs in young harp seals (Pagophilus groenlandicus): A randomised controlled field study in the Norwegian harp seal hunt
Abstract The aim of this study was to investigate the relative effectiveness of a rapidly expanding Bonded hunting bullet and an explosively expanding Varmint bullet in young harp seals ( Pagophilus groenlandicus ). The study was conducted as an open, controlled and randomised parallel-group designe...
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Cambridge University Press (CUP)
2021
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Online Access: | http://dx.doi.org/10.7120/09627286.30.2.155 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0962728600009271 |
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crcambridgeupr:10.7120/09627286.30.2.155 2024-05-12T08:04:40+00:00 The relative effectiveness of two expanding bullet designs in young harp seals (Pagophilus groenlandicus): A randomised controlled field study in the Norwegian harp seal hunt Ryeng, KA Larsen, SE 2021 http://dx.doi.org/10.7120/09627286.30.2.155 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0962728600009271 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Animal Welfare volume 30, issue 2, page 155-167 ISSN 0962-7286 2054-1538 General Veterinary General Biochemistry, Genetics and Molecular Biology Animal Science and Zoology journal-article 2021 crcambridgeupr https://doi.org/10.7120/09627286.30.2.155 2024-04-18T06:54:11Z Abstract The aim of this study was to investigate the relative effectiveness of a rapidly expanding Bonded hunting bullet and an explosively expanding Varmint bullet in young harp seals ( Pagophilus groenlandicus ). The study was conducted as an open, controlled and randomised parallel-group designed field trial. The animals were pre-randomised (1:1) into one explosively expanding (Varmint) and one expanding (Bonded) bullet type group, with 75 animals in each. The study sample consisted of young, weaned harp seals, 2-7 weeks of age, of both sexes, from the Greenland Sea harp seal population. The study was conducted during the regular hunt. Instantaneous death rate (IDR) and time to death (TTD) were the main variables. The observed IDR was 84% in both bullet groups. Correcting for Weather Condition Index, the IDR for the Varmint bullet was significantly higher compared to the Bonded. The mean TTD was shortest in the Varmint group, but the difference did not reach significance. Compared to the Bonded, a significantly higher total cranial damage score and bleeding intensity, and significantly lower frequencies of bullet exit wounds were detected in the Varmint group. The post mortem reflex movements caused by the Varmint bullet were significantly more powerful with longer duration and higher frequencies of clonic contractions. In conclusion, the results indicate a higher effectiveness of the Varmint bullet relative to the Bonded. The Varmint bullet may thus improve animal welfare in the hunt of young harp seals. Article in Journal/Newspaper Greenland Greenland Sea Harp Seal Pagophilus groenlandicus Cambridge University Press Greenland Animal Welfare 30 2 155 167 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
General Veterinary General Biochemistry, Genetics and Molecular Biology Animal Science and Zoology |
spellingShingle |
General Veterinary General Biochemistry, Genetics and Molecular Biology Animal Science and Zoology Ryeng, KA Larsen, SE The relative effectiveness of two expanding bullet designs in young harp seals (Pagophilus groenlandicus): A randomised controlled field study in the Norwegian harp seal hunt |
topic_facet |
General Veterinary General Biochemistry, Genetics and Molecular Biology Animal Science and Zoology |
description |
Abstract The aim of this study was to investigate the relative effectiveness of a rapidly expanding Bonded hunting bullet and an explosively expanding Varmint bullet in young harp seals ( Pagophilus groenlandicus ). The study was conducted as an open, controlled and randomised parallel-group designed field trial. The animals were pre-randomised (1:1) into one explosively expanding (Varmint) and one expanding (Bonded) bullet type group, with 75 animals in each. The study sample consisted of young, weaned harp seals, 2-7 weeks of age, of both sexes, from the Greenland Sea harp seal population. The study was conducted during the regular hunt. Instantaneous death rate (IDR) and time to death (TTD) were the main variables. The observed IDR was 84% in both bullet groups. Correcting for Weather Condition Index, the IDR for the Varmint bullet was significantly higher compared to the Bonded. The mean TTD was shortest in the Varmint group, but the difference did not reach significance. Compared to the Bonded, a significantly higher total cranial damage score and bleeding intensity, and significantly lower frequencies of bullet exit wounds were detected in the Varmint group. The post mortem reflex movements caused by the Varmint bullet were significantly more powerful with longer duration and higher frequencies of clonic contractions. In conclusion, the results indicate a higher effectiveness of the Varmint bullet relative to the Bonded. The Varmint bullet may thus improve animal welfare in the hunt of young harp seals. |
format |
Article in Journal/Newspaper |
author |
Ryeng, KA Larsen, SE |
author_facet |
Ryeng, KA Larsen, SE |
author_sort |
Ryeng, KA |
title |
The relative effectiveness of two expanding bullet designs in young harp seals (Pagophilus groenlandicus): A randomised controlled field study in the Norwegian harp seal hunt |
title_short |
The relative effectiveness of two expanding bullet designs in young harp seals (Pagophilus groenlandicus): A randomised controlled field study in the Norwegian harp seal hunt |
title_full |
The relative effectiveness of two expanding bullet designs in young harp seals (Pagophilus groenlandicus): A randomised controlled field study in the Norwegian harp seal hunt |
title_fullStr |
The relative effectiveness of two expanding bullet designs in young harp seals (Pagophilus groenlandicus): A randomised controlled field study in the Norwegian harp seal hunt |
title_full_unstemmed |
The relative effectiveness of two expanding bullet designs in young harp seals (Pagophilus groenlandicus): A randomised controlled field study in the Norwegian harp seal hunt |
title_sort |
relative effectiveness of two expanding bullet designs in young harp seals (pagophilus groenlandicus): a randomised controlled field study in the norwegian harp seal hunt |
publisher |
Cambridge University Press (CUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.7120/09627286.30.2.155 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0962728600009271 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland Sea Harp Seal Pagophilus groenlandicus |
genre_facet |
Greenland Greenland Sea Harp Seal Pagophilus groenlandicus |
op_source |
Animal Welfare volume 30, issue 2, page 155-167 ISSN 0962-7286 2054-1538 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.7120/09627286.30.2.155 |
container_title |
Animal Welfare |
container_volume |
30 |
container_issue |
2 |
container_start_page |
155 |
op_container_end_page |
167 |
_version_ |
1798846898436571136 |