Effect of testosterone on antler growth in yearling male reindeer

1. The effect of exogenous testosterone on ander growth in yearling male reindeer (Rangifer tarandus tarandus) was tested. 2. Testosterone (33 mg/kg) inhibited antler growth, and in one animal induced cleaning and subsequent casting of the antlers. This animal grew a new set of antlers, which were...

Full description

Bibliographic Details
Main Author: Morten Ryg
Format: Article
Language:English
Published: Septentrio Academic Publishing 1983-05-01
Series:Rangifer
Subjects:
Online Access:https://septentrio.uit.no/index.php/rangifer/article/view/475
id doaj-9eb5da564e1246fb8adb231571383ddb
record_format Article
spelling doaj-9eb5da564e1246fb8adb231571383ddb2020-11-24T21:26:58ZengSeptentrio Academic PublishingRangifer1890-67291983-05-013210.7557/2.3.2.475430Effect of testosterone on antler growth in yearling male reindeerMorten Ryg0Institute of Zoophysiology, P.O.Box 1051 Blindern, Oslo 3, Norway 1. The effect of exogenous testosterone on ander growth in yearling male reindeer (Rangifer tarandus tarandus) was tested. 2. Testosterone (33 mg/kg) inhibited antler growth, and in one animal induced cleaning and subsequent casting of the antlers. This animal grew a new set of antlers, which were cleaned at the normal time. 3. During treatment, there was an inverse relationship between peak testosterone levels and antler growth rate. 4. There was no effect of treatment on body weight or food intake. 5. It is concluded that the effects of testosterone on antler growth are qualitatively the same in reindeer as in other deer. However, because high testosterone doses were necessary to produce effects, it is questionable whether this hormone normally is responsible for the cessation of antler growth in reindeer. Virkningen av testosteron på gevirvekst hos ettårige reinbukker. Abstract in Norwegian / Sammendrag: 1. Virkningen av testosteron på gevirvekst hos ett-årige reinbukker (Rangifer tarandus tarandus) ble undersøkt. 2. Testosteron (33 mg/kg) hemmet gevirveksten, og hos ett dyr førte behandlingen til at geviret ble feiet og deretter felt. Deretter vokste det ut ett nytt gevir, som ble feiet til vanlig tid. 3. Det var en negativ korrelasjon mellom maksimale testosteronnivåer og gevirvekst under behandlingen. 4. Det var ingen effekt på forinntak eller vektutvikling. 5. Det blir konkludert med at virkningen av testosteron på gevirvekst er kvalitativt den samme hos rein som hos andre hjortedyr. Det er likevel tvilsomt om testosteron normalt er ansvarlig for avslutningen av gevirvekst hos rein, fordi store testosterondoser måtte til for å få noen virkning. Testosteronin vaikutus vuodenikåisten urosporojen sarvien kasvuun. Abstract in Finnish / Tiivistelmä: 1. Tutkimuksessa seurattiin ruiskeena annetun testosteronin vaikutusta vuodenikåisten urosporojen (Rangifer tarandus tarandus) sarvien kasvuun. 2. Testosteron! (33 mg/kg) hidasti sarvien kasvua, aiheuttaen yhdesså elåimesså sarvien kelomisen ja pudottamisen. Talle elåimelle kasvoi uudestaan sarvet, jotka se keloi normaaliin aikaan. 3. Testosteronin huipputaso veresså oli kåsittelyaikana kååntåen verrannollinen sarvien kasvunopeuteen. 4. Kåsittely ei vaikuttanut elåinten ruumiinpainoon eikå niiden ruokahaluun. 5. Voidaan pååtellå testosteronin vaikutuksien sarvien kasvuun olevan porossa laadullisesti yhtålåiset kuin muissakin hirvielåimisså. Koska vaikutuksen aikaansaamiseksi vaadittiin korkeita testosteroniannoksia, voidaan kuitenkin pitåå kyseenalaisena, onko kyseinen hormoni normaalisti vastuussa poronsarven kasvun keskeytymisestå. https://septentrio.uit.no/index.php/rangifer/article/view/475testosteronereindeerantler growth
collection DOAJ
language English
format Article
sources DOAJ
author Morten Ryg
spellingShingle Morten Ryg
Effect of testosterone on antler growth in yearling male reindeer
Rangifer
testosterone
reindeer
antler growth
author_facet Morten Ryg
author_sort Morten Ryg
title Effect of testosterone on antler growth in yearling male reindeer
title_short Effect of testosterone on antler growth in yearling male reindeer
title_full Effect of testosterone on antler growth in yearling male reindeer
title_fullStr Effect of testosterone on antler growth in yearling male reindeer
title_full_unstemmed Effect of testosterone on antler growth in yearling male reindeer
title_sort effect of testosterone on antler growth in yearling male reindeer
publisher Septentrio Academic Publishing
series Rangifer
issn 1890-6729
publishDate 1983-05-01
description 1. The effect of exogenous testosterone on ander growth in yearling male reindeer (Rangifer tarandus tarandus) was tested. 2. Testosterone (33 mg/kg) inhibited antler growth, and in one animal induced cleaning and subsequent casting of the antlers. This animal grew a new set of antlers, which were cleaned at the normal time. 3. During treatment, there was an inverse relationship between peak testosterone levels and antler growth rate. 4. There was no effect of treatment on body weight or food intake. 5. It is concluded that the effects of testosterone on antler growth are qualitatively the same in reindeer as in other deer. However, because high testosterone doses were necessary to produce effects, it is questionable whether this hormone normally is responsible for the cessation of antler growth in reindeer. Virkningen av testosteron på gevirvekst hos ettårige reinbukker. Abstract in Norwegian / Sammendrag: 1. Virkningen av testosteron på gevirvekst hos ett-årige reinbukker (Rangifer tarandus tarandus) ble undersøkt. 2. Testosteron (33 mg/kg) hemmet gevirveksten, og hos ett dyr førte behandlingen til at geviret ble feiet og deretter felt. Deretter vokste det ut ett nytt gevir, som ble feiet til vanlig tid. 3. Det var en negativ korrelasjon mellom maksimale testosteronnivåer og gevirvekst under behandlingen. 4. Det var ingen effekt på forinntak eller vektutvikling. 5. Det blir konkludert med at virkningen av testosteron på gevirvekst er kvalitativt den samme hos rein som hos andre hjortedyr. Det er likevel tvilsomt om testosteron normalt er ansvarlig for avslutningen av gevirvekst hos rein, fordi store testosterondoser måtte til for å få noen virkning. Testosteronin vaikutus vuodenikåisten urosporojen sarvien kasvuun. Abstract in Finnish / Tiivistelmä: 1. Tutkimuksessa seurattiin ruiskeena annetun testosteronin vaikutusta vuodenikåisten urosporojen (Rangifer tarandus tarandus) sarvien kasvuun. 2. Testosteron! (33 mg/kg) hidasti sarvien kasvua, aiheuttaen yhdesså elåimesså sarvien kelomisen ja pudottamisen. Talle elåimelle kasvoi uudestaan sarvet, jotka se keloi normaaliin aikaan. 3. Testosteronin huipputaso veresså oli kåsittelyaikana kååntåen verrannollinen sarvien kasvunopeuteen. 4. Kåsittely ei vaikuttanut elåinten ruumiinpainoon eikå niiden ruokahaluun. 5. Voidaan pååtellå testosteronin vaikutuksien sarvien kasvuun olevan porossa laadullisesti yhtålåiset kuin muissakin hirvielåimisså. Koska vaikutuksen aikaansaamiseksi vaadittiin korkeita testosteroniannoksia, voidaan kuitenkin pitåå kyseenalaisena, onko kyseinen hormoni normaalisti vastuussa poronsarven kasvun keskeytymisestå.
topic testosterone
reindeer
antler growth
url https://septentrio.uit.no/index.php/rangifer/article/view/475
work_keys_str_mv AT mortenryg effectoftestosteroneonantlergrowthinyearlingmalereindeer
_version_ 1725977165492649984