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Rangifer
Article . 1982 . Peer-reviewed
License: CC BY
Data sources: Crossref
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Rangifer
Article
License: CC BY
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Rangifer
Article . 1982
Data sources: DOAJ
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The diagnosis of early pregnancy and missed abortion in European and Svalbard reindeer (Rangifer tarandus tarandus and Rangifer tarandus platyrhyncus

Authors: Ringberg, Tata; Aakvaag, Asbjørn;

The diagnosis of early pregnancy and missed abortion in European and Svalbard reindeer (Rangifer tarandus tarandus and Rangifer tarandus platyrhyncus

Abstract

<p>Progesterone levels in peripheral plasma from a total of 38 pregnant an non-pregnant Norwegian and Svalbard reindeer (R. tarandus tarandus and R. t. platyrhyncbus, respectively), were measured 5 to 6 times between November and May, and the size of 18 corresponding fetuses determined. The serum levels of progesterone were similar in the two subspecies, and increased from 1.5 nmol/1 (non-pregnant level) to 10&mdash;30 nmol/1 in November in pregnant animals. A maximum of 40&mdash;80 nmol/1 was reached in April whereafter the levels declined as time of delivery (beginning of June) approached. Animals with &laquo;missed&raquo; abortions had progesterone levels in serum of 5&mdash;6 nmol/1 in November. The size of the fetuses in November (average 3.7 and 30.7 mm) makes delayed implantation in reindeer unlikely.</p><p>Tidlig diagnostisering av drektighet og skjult abort i europeisk rein og Svalbardrein (Rangifer tarandus tarandus og Rangifer tarandus platyrhuncus).</p><p>Abstract in Norwegian / Sammendrag: Progesteron er det viktigste drektighetshormon hos pattedyr, og allerede tidlig i drektighetsperioden kan man hos en rekke arter p&aring;vise en &oslash;kning i konsentrasjonen av dette hormon i blodet. Det har v&aelig;rt diskutert om det samme var tilfelle hos rein. Hvis det var s&aring;, ville det v&aelig;re mulig ved hjelp av en enkelt blodpr&oslash;ve p&aring; h&oslash;sten &aring; bestemme om dyret var drektig eller ei, og s&aring;ledes ha et bedre grunnlag for &aring; velge ut simler for slakt. Form&aring;let med de fors&oslash;kene som er beskrevet i denne artikkel var derfor &aring; m&aring;le progesteron-verdiene i blodet hos drektige og ikke-drektige simler for &aring; se om de f&oslash;rstnevnte hadde h&oslash;yere niv&aring;, og dernest &aring; se om det var en sammenheng mellom fosterets st&oslash;rrelse og progesteron-niv&aring;et. Til fors&oslash;kene ble det brukt tretti V2&mdash;2V2 &aring;r gamle simler fra reineier John Nordfjells flokk p&aring; R&oslash;ros, samt &aring;tte Svalbard-rein simler. Fra de norske rein ble blodpr&oslash;ver og fostre samlet under slaktning d. 26. november 1979, og fra Svalbard-reinen ble det tatt blodpr&oslash;ver 5&mdash;6 ganger mellom januar og mai 1980. Svalbard-reinen ble ikke slaktet, og i begynnelsen av juni nedkom 3 av dem med kalv. Fostrene fra de norske rein ble veiet og m&aring;lt etter fixering i formalin. Blodpr&oslash;vene av samtlige dyr ble analysert for innhold av progesteron p&aring; Sentrallaboratoriet Aker Sykehus, Oslo. Det ble funnet at progesteron-verdiene &oslash;kte fra 1.5 nmol/lhos ikke-drektige dyr til 10&mdash;30 nmol i november og 40&mdash;80 nmol/1 i april hos drektige dyr. Hos simler, som hadde mistet kalven (abortert) var verdiene 5&mdash;6 nmol i november. Det ble ogs&aring; funnet at det ikke var noen sammenheng mellom fosterets st&oslash;rrelse og simlas progesteron-niv&aring; i blodet. Den gjennomsnittlige (antall fostre = 18) fosterlengde i november var 30.7 mm og fostervekt 3.7 g.</p><p>Tiineyden ja sikion varhaiskuoleman varhaisesta diagnostisoimisesta eurooppalaisella porolla ja Huippuvuorten peuralla (Rangifer tarandus tarandus ja Rangifer tarandus platyrhynchus).</p><p>Abstract in Finnish / Yhteenveto: Progesteroni on nisakk&auml;iden t&auml;rkein raskaushormoni ja jo heti raskauden alussa voidaan monilla lajeilla osoittaa veress&auml; t&auml;m&auml;n hormonin konsentraation kohoaminen. On pohdittu, olisiko tilanne sama my&ouml;s poron suhteen. Jos niin olisi, olisi mahdollista yksinkertaisen syksyll&auml; otettavan verin&auml;ytteen perusteella m&auml;&auml;ritt&auml;&auml; onko el&auml;in tiineen&auml; vai ei ja siten hankkia paremmat perusteet teurasvaadinten valinnalle. Nyt t&auml;ss&auml; artikkelissa selostettavien kokeiden tarkoituksena oli mitata tiineiden ja mahojen vaadinten veren progesteroni-arvo, jotta voitaisiin havaita, olisiko ensiksimainitun arvo korkeampi kuin viimeksimainitun ja edelleen olisiko progesteronitason ja siki&ouml;n koon v&auml;lill&auml; mahdollisesti tietty riippuvuus. Kokeissa k&auml;ytettiin 30, i&auml;lt&auml;&auml;n 0,5&mdash;2,5 vuotiasta R&oslash;rosilaisen poronomistaja John Nordfjellin laumaan kuuluvaa vaadinta sek&auml; kahdeksan Huippuvuorten peura-vaadinta. Norjalaisista poroista otettiin verin&auml;ytteet ja siki&ouml;t, kun el&auml;imet teurastettiin 26. marraskuuta 1979. Huippuvuorten peuroista verin&auml;ytteit&auml; otettiin 5&mdash;6 kertaa tammikuun ja toukokuun v&auml;lisen&auml; aikana 1980. Peuroja ei teurastettu ja kes&auml;kuun alussa kolme niist&auml; synnytti vasan. Norjalaisten porojen siki&ouml;t punnittiin ja mitattiin formaliinifikseerauksen j&auml;lkeen. Kaikkien el&auml;inten verin&auml;ytteet analysoitiin progesteronin m&auml;&auml;ritt&auml;miseksi Aker-sairaalan keskuslaboratoriossa Oslossa. Poroilla, jotka eiv&auml;t olleet tiinein&auml;, havaittiin progesteronitason kohoaminen 1.5nmol/l-arvostalukemaan 10-30 nmol marraskuussa ja tiineill&auml; arvoon 40-80 nmol/1 huhtikuussa. Vaatimilla, jotka olivat luoneet siki&ouml;ns&auml;, arvo oli 5-6 nmol/1 marraskuussa. Kokeissa todettiin edelleen, ett&auml; siki&ouml;n koon ja vaatimen veren progesteroni-tason v&auml;lill&auml; ei ollut yhteytt&auml;. Keskim&auml;&auml;r&auml;inen siki&ouml;n pituus (18 siki&ouml;t&auml;) marraskuussa oli 30.7 mm ja paino 3.7 g.</p>

Related Organizations
Keywords

early pregnancy; abortion; reindeer;, early pregnancy, Physiology; Reindeer Pregnancy; Abortion, reindeer, abortion, SF1-1100, Animal culture

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
6
Average
Average
Average
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