The composition of hooded seal ( Cystophora cristata ) milk: an adaptation for postnatal fattening
We obtained milk from 22 hooded seals on pack ice off the southeast coast of Labrador. Milk composition was not affected by degree of mammary evacuation or method of milk collection (drug immobilization vs. postmortem collection). Lactation stage exerted relatively little influence on milk compositi...
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Language: | English |
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Canadian Science Publishing
1988
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Online Access: | http://dx.doi.org/10.1139/z88-047 http://www.nrcresearchpress.com/doi/pdf/10.1139/z88-047 |
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crcansciencepubl:10.1139/z88-047 2023-12-17T10:29:20+01:00 The composition of hooded seal ( Cystophora cristata ) milk: an adaptation for postnatal fattening Oftedal, Olav T. Boness, Daryl J. Bowen, W. Don 1988 http://dx.doi.org/10.1139/z88-047 http://www.nrcresearchpress.com/doi/pdf/10.1139/z88-047 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 66, issue 2, page 318-322 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1988 crcansciencepubl https://doi.org/10.1139/z88-047 2023-11-19T13:39:41Z We obtained milk from 22 hooded seals on pack ice off the southeast coast of Labrador. Milk composition was not affected by degree of mammary evacuation or method of milk collection (drug immobilization vs. postmortem collection). Lactation stage exerted relatively little influence on milk composition over the course of the 4-day lactation period, but colostrum was higher in crude protein content. At mid to late lactation (2 – 4 days postpartum), hooded seal milk contains the highest dry matter (70%), fat (61%), and gross energy (5.9 kcal/g) contents that have been reported for any mammalian milk. This high fat content may be essential to achievement of the extremely rapid rate of fat deposition (about 4 kg/d) by suckling pups. The relatively low protein content (4.9%) at mid to late lactation is consistent with the small proportion of postnatal weight gain that is lean body mass. The proportion of milk energy contributed by protein is the lowest known for any mammal. Article in Journal/Newspaper Cystophora cristata hooded seal Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 66 2 318 322 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Oftedal, Olav T. Boness, Daryl J. Bowen, W. Don The composition of hooded seal ( Cystophora cristata ) milk: an adaptation for postnatal fattening |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
We obtained milk from 22 hooded seals on pack ice off the southeast coast of Labrador. Milk composition was not affected by degree of mammary evacuation or method of milk collection (drug immobilization vs. postmortem collection). Lactation stage exerted relatively little influence on milk composition over the course of the 4-day lactation period, but colostrum was higher in crude protein content. At mid to late lactation (2 – 4 days postpartum), hooded seal milk contains the highest dry matter (70%), fat (61%), and gross energy (5.9 kcal/g) contents that have been reported for any mammalian milk. This high fat content may be essential to achievement of the extremely rapid rate of fat deposition (about 4 kg/d) by suckling pups. The relatively low protein content (4.9%) at mid to late lactation is consistent with the small proportion of postnatal weight gain that is lean body mass. The proportion of milk energy contributed by protein is the lowest known for any mammal. |
format |
Article in Journal/Newspaper |
author |
Oftedal, Olav T. Boness, Daryl J. Bowen, W. Don |
author_facet |
Oftedal, Olav T. Boness, Daryl J. Bowen, W. Don |
author_sort |
Oftedal, Olav T. |
title |
The composition of hooded seal ( Cystophora cristata ) milk: an adaptation for postnatal fattening |
title_short |
The composition of hooded seal ( Cystophora cristata ) milk: an adaptation for postnatal fattening |
title_full |
The composition of hooded seal ( Cystophora cristata ) milk: an adaptation for postnatal fattening |
title_fullStr |
The composition of hooded seal ( Cystophora cristata ) milk: an adaptation for postnatal fattening |
title_full_unstemmed |
The composition of hooded seal ( Cystophora cristata ) milk: an adaptation for postnatal fattening |
title_sort |
composition of hooded seal ( cystophora cristata ) milk: an adaptation for postnatal fattening |
publisher |
Canadian Science Publishing |
publishDate |
1988 |
url |
http://dx.doi.org/10.1139/z88-047 http://www.nrcresearchpress.com/doi/pdf/10.1139/z88-047 |
genre |
Cystophora cristata hooded seal |
genre_facet |
Cystophora cristata hooded seal |
op_source |
Canadian Journal of Zoology volume 66, issue 2, page 318-322 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z88-047 |
container_title |
Canadian Journal of Zoology |
container_volume |
66 |
container_issue |
2 |
container_start_page |
318 |
op_container_end_page |
322 |
_version_ |
1785581688031543296 |