scholarly journals Eigil Reimers; Body composition, mortality and population regulation of Svalbard reindeer

Rangifer ◽  
1982 ◽  
Vol 2 (2) ◽  
pp. 48
Author(s):  
Editor Editor
Rangifer ◽  
1984 ◽  
Vol 4 (2) ◽  
pp. 16 ◽  
Author(s):  
Eigil Reimers

<p>After severe winters, body weight, fat, and lean tissue of the high Arctic Svalbard reindeer may be reduced by 50, 90-97 and 30-40% respectively. Absence of harassment from predators, insects and man allows surviving animals to rapidly restore body reserves during the summer. That accumulation of large pre-winter body reserves is essential, as the reindeer's survival and population control is dependant upon use of winter forage which is resistant to grazing but poor in quality.</p><p>Kroppssammensetning og bestandsregulering hos svalbardrein.</p><p>Abstract in Norwegian / Sammendrag: Etter harde vintre kan kroppsvekt, fett og magert vev bli redusert med henholdsvis 50, 90 - 97% henholdsvis. Frav&aelig;r av forstyrrelser av rovdyr, insekter og mennesker tillater overlevende dyr &aring; fornye sine kroppsreserver raskt gjennom sommeren. Denne akkumulering av store kroppsreserver f&oslash;r vinteren er livsviktig, da reinens overlevelse og bestandskontroll er avhengig av et vinterfor som er motstandsdyktig mot beiting, men er av d&aring;rlig kvalitet.</p><p>Huippuvuorten porojen ruumiinkokoonpano ja el&auml;inkannan s&auml;&auml;t&ouml;.</p><p>Abstract in Finnish /Yhteenveto: Ankarien talvien j&auml;lkeen voi ruumiinpaino, rasva ja laiha kudos v&auml;het&auml; 50, 90-97 ja 30-40 % jokainen erikseen. Petoel&auml;inten, hy&ouml;nteisten ja ihmisten h&auml;iri&ouml;iden poisj&auml;&auml;dess&auml; on eloonj&auml;&auml;neill&auml; el&auml;imill&auml; mahdollisuus uusia nopeasti ruumiin vara-aineet kes&auml;n kuluessa. Tam&auml; suurien ruumiin vara-aineiden kasaantuma ennen talvea on elint&auml;rke&auml;, koska porojen eloonj&auml;&auml;minen ja el&auml;inkannan valvonta on riippuvainen talvilaitumesta, joka siet&auml;&auml; laiduntamisen, vaikka se on huonoa laatua.</p>


2019 ◽  
pp. 397-426
Author(s):  
R. Justin Irvine ◽  
Steve D. Albon ◽  
Audun Stien ◽  
Odd Halvorsen ◽  
Anja M. Carlsson

1995 ◽  
Vol 73 (11) ◽  
pp. 2021-2034 ◽  
Author(s):  
J. Z. Adamczewski ◽  
P. F. Flood ◽  
A. Gunn

We used data on the anatomical and chemical body composition of 22 muskoxen (7 adult females, 6 subadult females, 2 yearlings, 5 calves, and 2 near-term fetuses) from Victoria Island, Northwest Territories, to evaluate basic patterns of body composition and allometric growth in this species and to assess methods of estimating body composition from mass and index measurements. Ingesta-free body mass (IFBM) ranged from 9 kg in the 2 fetuses to 150 kg in the largest cow, and fatness from 2.0% of IFBM in a newborn calf to 29.0% in a mature cow. The proportion of fat increased most rapidly in muskoxen with IFBM ≥ 100 kg. In the fatter females, about 33% of the fat was intermuscular, 27% subcutaneous, 20% abdominal, and 13% intramuscular. In muskoxen ≥ 3 years old, ingesta accounted for 26.8 ± 1.1% of body mass and pelage for 4–4.5% of IFBM. Muscle mass was best estimated from masses of individual muscles, protein mass from IFBM, bone mass from the masses of limb bones, and ash mass from IFBM. Dissectible and total fat masses were less predictable, and were best estimated by multiple regressions combining kidney fat mass and a measure of body mass with up to three other measurements. Body composition and fat distribution in muskoxen were similar to those in cattle and sheep and the extent of fattening exceeded that reported in wild ruminants except for Svalbard reindeer (Rangifer tarandus platyrhynchus).


1982 ◽  
Vol 60 (8) ◽  
pp. 1812-1821 ◽  
Author(s):  
Eigil Reimers ◽  
Tata Ringberg ◽  
Rolf Sørumgård

Tissue and (or) chemical body composition was determined in 18 Svalbard reindeer, aged [Formula: see text] months prepartum to [Formula: see text] years, and in mainland Norway reindeer, aged [Formula: see text] months prepartum to [Formula: see text] years. At the end of the growing season, the fat content in the ingesta-free body was very high (27–40%) in Svalbard reindeer. Two mainland yearling males had 4.5% body fat as compared with 27.8% in a Svalbard male yearling. At the end of winter the weight decrease of Svalbard reindeer was close to 50%. The loss of ash, protein, water, and fat from the body was estimated at 16.8, 30.9, 34.3, and 76.3%, respectively. Animals that had starved to death showed an additional weight loss of 8% and a nearly complete loss of fat. Liver content of Fe increased from 97 mg/kg in late summer to 3463 mg/kg in late winter and 5075 mg/kg in animals that had starved to death. There were significant linear relationships between the percent water and percent fat in the ingesta-free body and between the weight of the fat-free and ingesta-free body and the weight of its components, namely water, protein, and ash.


JAMA ◽  
1966 ◽  
Vol 197 (11) ◽  
pp. 891-893 ◽  
Author(s):  
L. P. Novak

2001 ◽  
Vol 120 (5) ◽  
pp. A262-A262
Author(s):  
F FIGUEIREDO ◽  
M KONDO ◽  
M CHARLTON

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