Holarctic Marmots as a factor of Biodiversity.
Rumiantsev V.Yu;, Nikol'skii A.A. & Brandler O.V. eds.,
Abstracts, 3d Conference on Marmots (Cheboksary, Russia, 25-30 August 1997),
Moscow ABF 1997, 216p. : 203.


WEIGHT OF KAZAKHSTAN BOBAC FELLS


B.Ye. Zarubin

Prof. Zhitkov' VNIIOZ, Kirov, Russia


A raw fell of an adult bobac flayed proptrly without a fatty and a muscular tissues and without the loss of topographic parts makes up 8% of the animal body weight in North-Kazakhstan population and 8.5% in Central-Kazkhatan population (Table). But there is fat and moisture in a fell. Dry conservation means the removal of all these components during aqueezing, scraping and drying. Marmot fells of both popnlations conserved that way make up 2.9% of an animal body weight. Therefore the ditference in raw fells weight of the animals in those populations is in the content of fat and moisture. As we can see the fells of North-Kazkhatan marmots have more moisture, and the fells of Central-Kazakhstan marmots have more fat. The moisture content in the fells of the former population exceeds the weight of s dry fell. The fat content in the fells of the latter population is twice as high as in the fells of the former one. It may be supposed that this is the result of the increase of a heat insulating function activity of a skin tissue in a hotter climate of Central Kazakhatan.

As to fingerling fells there isn't any general rule but their weight portion in both populations is higher than that of adults and it is higher in the south population than in the north one. The moisture content in the north is higher than in the sonth. A heat insulating function in fingerlings in south regions is apparently even more important than in adults.

Conclusions:

1. The weight portion or a raw fell of adalt marmots against the weight of a body is a constant value and is individual for every population studied.

2. The weight portion of dry fells against the weight of a body is the same in the marmots or either population studied.

3. The fat and moisture content in marmot fells is different and perhaps depends on a heat insulating function under certain climatic conditions.


Table.
Weight indices of marmot fells in various conditions

Region / PopulationNumber of fells studiedAge groupBody weight (g)Weight indices of fells including % o fbody weight
Raw fell weightWeight of fell degressedSkin fat contentWeight of dry fellMoisture contentWeight of wet-salted fell
g%g%g%g%g%g%
Yermentau region North-Kzakhstan population219fingerlings22732028.91597.0431.9803.5793.5--
937adults45913668.02826.1841.81352.91473.2--
15fingerlings22281828.22311.04
157adults46683758.03597.7
Krasnoznamenka region Central-Kazakhstan population10fingerlings200021210.61236.2894.4753.8482.4--
78adults50664308.52795.51513.01492.91302.6--
36fingerlings17251669.619111.1
436adults47444068.53988.4

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