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Histochemical and enzymatic differences in skeletal muscle from Svalbard reindeer during the summer and winter

Kiessling, Anders and Kiessling, Karl-Heinz and Nilssen, K and Andersson, IL (1986). Histochemical and enzymatic differences in skeletal muscle from Svalbard reindeer during the summer and winter. Rangifer. 6 , 2-8
[Journal article]

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Official URL: http://septentrio.uit.no/index.php/rangifer

Abstract

Enzyme activities and fibre properties in four muscles from Svalbard reindeer, collected during the summer, have been compared with corresponding muscles during the winter. In two muscles, gluteobiceps and semimembranosus, oxidative capacity is higher in winter than in summer; in the other two muscles, semitendinosus and longissimus dorsi, there is no difference with time of the year. The capacity to oxidize fatty acids is low in winter compared with summer, especially in semitendinosus and longissimus. These changes are similar in both sexes. Histochemical studies of the three main fibre types, I (BetaR), HA (°cR) and IIB (aW), from the four muscles show that in male reindeers the muscle fibres are narrower at the end of the winter season than during the summer. The decrease of muscle tissue amounts to about one third of the total volume (33%), of which I accounts for 5%, IIA for 2% and IIB for 26%. The results indicate that the Svalbard reindeer use lean tissue in general, and IIB fibres in particular, in order to survive the hostile arctic winter period at Svalbard.

Authors/Creators:Kiessling, Anders and Kiessling, Karl-Heinz and Nilssen, K and Andersson, IL
Title:Histochemical and enzymatic differences in skeletal muscle from Svalbard reindeer during the summer and winter
Alternative abstract:
LanguageAbstract
Swedish

Sammandrag: Enzymaktiviteter och fiberegenskaper i fyra av
Svalbardrenens muskler, insamlade under sommaren, har jåmforts med
motsvarande muskler insamlade under vintern. I två muskler, gluteobiceps
och semimembranosus, år oxidativa kapaciteten hogre under vintern an
under sommaren; i de andra två musklerna, semitendinosus och longissimus
dorsi, foreligger ingen skillnad i detta avseende. Kapaciteten att
oxidera fettsyror år låg under vintern jåmfort med sommaren, speciellt i
semitendinosus och longissimus. Inga konsskillnader foreligger i dessa
avseenden. Histokemiska studier av de tre huvudtyperna av muskelfibrer,
fiR (I), ocR (IIA) och (IIB), från de fyra musklerna visar att hos
handjuren år fibrerna tunnare vid slutet av vintersåsongen jåmfort med
sommaren. Denna minskning i muskelvåvnad uppgår till en tredjedel av
totala volymen (33%). Harav svarar ftR for 5%, ^R tor 2% och for 26%.
Resultaten antyder att Svalbardrenen anvånder muskelvåvnad, speciellt
QcW fibrer, for att overleva undri den hårda arktiska vinterperioden på
Svalbard.<p><br /></p>

Series/Journal:Rangifer (0333-256X)
Year of publishing :1986
Volume:6
Page range:2-8
Number of Pages:6
Publisher:Swedish University of Agricultural Sciences, Dept. of Animal Nutrition and Management, Reindeer Husbandry Unit
ISSN:0333-256X
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Zoology
Agrovoc terms:reindeer, wintering, muscle fibres, enzymes, starvation
Keywords:Svalbard reindeer, starvation, muscle fibres, muscle enzyme activity
URN:NBN:urn:nbn:se:slu:epsilon-e-4902
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-4902
ID Code:15475
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Institutionen för husdjurens utfodring och vård
Deposited By: SLUpub Connector
Deposited On:28 May 2018 10:14
Metadata Last Modified:09 Sep 2020 14:17

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