AustralieFrV1, Istex, Curation, bibRecord, 000C61

The induction of oestrus and ovulation in seasonally anovular ewes by exposure to rams

Identifieur interne : 000C61 ( Istex/Curation ); précédent : 000C60; suivant : 000C62

The induction of oestrus and ovulation in seasonally anovular ewes by exposure to rams

Auteurs : Graeme B. Martin [Australie, France] ; Rex J. Scaramuzzi [Australie]

Source :

Journal of Steroid Biochemistry [ 0022-4731 ] ; 1983.

RBID : ISTEX:43948B536ABB97D44E79C758489F61B8758D2AD0

Descripteurs français

Wicri :
- topic : Production animale.

English descriptors

KwdEn :
- Active immunization, Anim, Animal production, Anoestrous ewes, Anoestrus, Anoestrus ewes, Anoestrus season, Anovular, Anovular ewes, Corpora lutea, Direct effect, Ewe, Fecundity, First oestrus, First ovulation, Follicular phase, High rate, Implant, Inhibitory effects, Luteinizing hormone, Merino, Merino ewes, Multiple ovulations, Oestradiol, Oestrous, Oestrous cycle, Oestrus, Oldham, Ovariectomized, Ovariectomized ewes, Ovulate, Ovulation, Pergamon press, Photoperiod, Poindron, Positive feedback, Proc, Progesterone, Pulsatile secretion, Ram, Reprod, Scaramuzzi, Second ovulation, Secretion, Short cycles, Steroid, Third ovulation, Tonic, Tonic secretion, Western australia.
Teeft :
- Active immunization, Anim, Animal production, Anoestrous ewes, Anoestrus, Anoestrus ewes, Anoestrus season, Anovular, Anovular ewes, Corpora lutea, Direct effect, Ewe, Fecundity, First oestrus, First ovulation, Follicular phase, High rate, Implant, Inhibitory effects, Luteinizing hormone, Merino, Merino ewes, Multiple ovulations, Oestradiol, Oestrous, Oestrous cycle, Oestrus, Oldham, Ovariectomized, Ovariectomized ewes, Ovulate, Ovulation, Pergamon press, Photoperiod, Poindron, Positive feedback, Proc, Progesterone, Pulsatile secretion, Ram, Reprod, Scaramuzzi, Second ovulation, Secretion, Short cycles, Steroid, Third ovulation, Tonic, Tonic secretion, Western australia.

Abstract

Abstract: In anoestrus ewes of many breeds, the introduction of rams will evoke an increase in the tonic secretion of LH, pre-ovulatory surges of LH and FSH, and ovulation, provided the ewes have been preconditioned by a period of complete isolation from the rams. The “ram effect” is apparently mediated by a pheromone which seems to inhibit or reverse the effects of photoperiod on the secretion of LH pulses. In the absence of progesterone “priming” the ewes rarely show oestrus behaviour around the time of the first ovulation. In some of the ewes, the corpus luteum formed at the first ovulation is apparently normal, and the second ovulation and first oestrus is observed about one oestrus cycle later. In the remainder of the ewes, the first corpus luteum regresses prematurely, a second ovulation is seen about 6 days after the first, and the third ovulation and first oestrus are seen after a further 17 days. Progesterone treatment prior to the introduction of rams prevents the occurrence of short cycles, apparently by delaying the LH surge. The combination of the ram effect and progesterone treatments can provide useful synchrony of oestrus for artificial insemination, and also some gains in fecundity. There is considerable potential for using the effect in intensive breeding programmes.

Url:

https://api.istex.fr/document/43948B536ABB97D44E79C758489F61B8758D2AD0/fulltext/pdf

DOI: 10.1016/0022-4731(83)90026-2

Links toward previous steps (curation, corpus...)

to stream Istex, to step Corpus: Pour aller vers cette notice dans l'étape Curation :000C61

Links to Exploration step

ISTEX:43948B536ABB97D44E79C758489F61B8758D2AD0

Le document en format XML

<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title>The induction of oestrus and ovulation in seasonally anovular ewes by exposure to rams</title>
<author><name sortKey="Martin, Graeme B" sort="Martin, Graeme B" uniqKey="Martin G" first="Graeme B." last="Martin">Graeme B. Martin</name>
<affiliation wicri:level="1"><mods:affiliation>Department of Animal Science and Production, University of Western Australia, Nedlands 6009 Australia</mods:affiliation>
<country xml:lang="fr">Australie</country>
<wicri:regionArea>Department of Animal Science and Production, University of Western Australia</wicri:regionArea>
</affiliation>
<affiliation wicri:level="1"><mods:affiliation>‡ Present address: INRA Station de Physiologie de la Reproduction, Nouzilly, 37380 Monnaie, France.</mods:affiliation>
<country xml:lang="fr">France</country>
<wicri:regionArea>‡ Present address: INRA Station de Physiologie de la Reproduction, Nouzilly, 37380 Monnaie</wicri:regionArea>
</affiliation>
</author>
<author><name sortKey="Scaramuzzi, Rex J" sort="Scaramuzzi, Rex J" uniqKey="Scaramuzzi R" first="Rex J." last="Scaramuzzi">Rex J. Scaramuzzi</name>
<affiliation wicri:level="1"><mods:affiliation>CSIRO Division of Animal Production, P.O. Box 239, Blacktown, New South Wales 2148, Australia</mods:affiliation>
<country xml:lang="fr">Australie</country>
<wicri:regionArea>CSIRO Division of Animal Production, P.O. Box 239, Blacktown, New South Wales 2148</wicri:regionArea>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">ISTEX</idno>
<idno type="RBID">ISTEX:43948B536ABB97D44E79C758489F61B8758D2AD0</idno>
<date when="1983" year="1983">1983</date>
<idno type="doi">10.1016/0022-4731(83)90026-2</idno>
<idno type="url">https://api.istex.fr/document/43948B536ABB97D44E79C758489F61B8758D2AD0/fulltext/pdf</idno>
<idno type="wicri:Area/Istex/Corpus">000C61</idno>
<idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000C61</idno>
<idno type="wicri:Area/Istex/Curation">000C61</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title level="a">The induction of oestrus and ovulation in seasonally anovular ewes by exposure to rams</title>
<author><name sortKey="Martin, Graeme B" sort="Martin, Graeme B" uniqKey="Martin G" first="Graeme B." last="Martin">Graeme B. Martin</name>
<affiliation wicri:level="1"><mods:affiliation>Department of Animal Science and Production, University of Western Australia, Nedlands 6009 Australia</mods:affiliation>
<country xml:lang="fr">Australie</country>
<wicri:regionArea>Department of Animal Science and Production, University of Western Australia</wicri:regionArea>
</affiliation>
<affiliation wicri:level="1"><mods:affiliation>‡ Present address: INRA Station de Physiologie de la Reproduction, Nouzilly, 37380 Monnaie, France.</mods:affiliation>
<country xml:lang="fr">France</country>
<wicri:regionArea>‡ Present address: INRA Station de Physiologie de la Reproduction, Nouzilly, 37380 Monnaie</wicri:regionArea>
</affiliation>
</author>
<author><name sortKey="Scaramuzzi, Rex J" sort="Scaramuzzi, Rex J" uniqKey="Scaramuzzi R" first="Rex J." last="Scaramuzzi">Rex J. Scaramuzzi</name>
<affiliation wicri:level="1"><mods:affiliation>CSIRO Division of Animal Production, P.O. Box 239, Blacktown, New South Wales 2148, Australia</mods:affiliation>
<country xml:lang="fr">Australie</country>
<wicri:regionArea>CSIRO Division of Animal Production, P.O. Box 239, Blacktown, New South Wales 2148</wicri:regionArea>
</affiliation>
</author>
</analytic>
<monogr></monogr>
<series><title level="j">Journal of Steroid Biochemistry</title>
<title level="j" type="abbrev">JSTEB</title>
<idno type="ISSN">0022-4731</idno>
<imprint><publisher>ELSEVIER</publisher>
<date type="published" when="1983">1983</date>
<biblScope unit="volume">19</biblScope>
<biblScope unit="issue">1</biblScope>
<biblScope unit="supplement">P3</biblScope>
<biblScope unit="page" from="869">869</biblScope>
<biblScope unit="page" to="875">875</biblScope>
</imprint>
<idno type="ISSN">0022-4731</idno>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><idno type="ISSN">0022-4731</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Active immunization</term>
<term>Anim</term>
<term>Animal production</term>
<term>Anoestrous ewes</term>
<term>Anoestrus</term>
<term>Anoestrus ewes</term>
<term>Anoestrus season</term>
<term>Anovular</term>
<term>Anovular ewes</term>
<term>Corpora lutea</term>
<term>Direct effect</term>
<term>Ewe</term>
<term>Fecundity</term>
<term>First oestrus</term>
<term>First ovulation</term>
<term>Follicular phase</term>
<term>High rate</term>
<term>Implant</term>
<term>Inhibitory effects</term>
<term>Luteinizing hormone</term>
<term>Merino</term>
<term>Merino ewes</term>
<term>Multiple ovulations</term>
<term>Oestradiol</term>
<term>Oestrous</term>
<term>Oestrous cycle</term>
<term>Oestrus</term>
<term>Oldham</term>
<term>Ovariectomized</term>
<term>Ovariectomized ewes</term>
<term>Ovulate</term>
<term>Ovulation</term>
<term>Pergamon press</term>
<term>Photoperiod</term>
<term>Poindron</term>
<term>Positive feedback</term>
<term>Proc</term>
<term>Progesterone</term>
<term>Pulsatile secretion</term>
<term>Ram</term>
<term>Reprod</term>
<term>Scaramuzzi</term>
<term>Second ovulation</term>
<term>Secretion</term>
<term>Short cycles</term>
<term>Steroid</term>
<term>Third ovulation</term>
<term>Tonic</term>
<term>Tonic secretion</term>
<term>Western australia</term>
</keywords>
<keywords scheme="Teeft" xml:lang="en"><term>Active immunization</term>
<term>Anim</term>
<term>Animal production</term>
<term>Anoestrous ewes</term>
<term>Anoestrus</term>
<term>Anoestrus ewes</term>
<term>Anoestrus season</term>
<term>Anovular</term>
<term>Anovular ewes</term>
<term>Corpora lutea</term>
<term>Direct effect</term>
<term>Ewe</term>
<term>Fecundity</term>
<term>First oestrus</term>
<term>First ovulation</term>
<term>Follicular phase</term>
<term>High rate</term>
<term>Implant</term>
<term>Inhibitory effects</term>
<term>Luteinizing hormone</term>
<term>Merino</term>
<term>Merino ewes</term>
<term>Multiple ovulations</term>
<term>Oestradiol</term>
<term>Oestrous</term>
<term>Oestrous cycle</term>
<term>Oestrus</term>
<term>Oldham</term>
<term>Ovariectomized</term>
<term>Ovariectomized ewes</term>
<term>Ovulate</term>
<term>Ovulation</term>
<term>Pergamon press</term>
<term>Photoperiod</term>
<term>Poindron</term>
<term>Positive feedback</term>
<term>Proc</term>
<term>Progesterone</term>
<term>Pulsatile secretion</term>
<term>Ram</term>
<term>Reprod</term>
<term>Scaramuzzi</term>
<term>Second ovulation</term>
<term>Secretion</term>
<term>Short cycles</term>
<term>Steroid</term>
<term>Third ovulation</term>
<term>Tonic</term>
<term>Tonic secretion</term>
<term>Western australia</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Production animale</term>
</keywords>
</textClass>
<langUsage><language ident="en">en</language>
</langUsage>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">Abstract: In anoestrus ewes of many breeds, the introduction of rams will evoke an increase in the tonic secretion of LH, pre-ovulatory surges of LH and FSH, and ovulation, provided the ewes have been preconditioned by a period of complete isolation from the rams. The “ram effect” is apparently mediated by a pheromone which seems to inhibit or reverse the effects of photoperiod on the secretion of LH pulses. In the absence of progesterone “priming” the ewes rarely show oestrus behaviour around the time of the first ovulation. In some of the ewes, the corpus luteum formed at the first ovulation is apparently normal, and the second ovulation and first oestrus is observed about one oestrus cycle later. In the remainder of the ewes, the first corpus luteum regresses prematurely, a second ovulation is seen about 6 days after the first, and the third ovulation and first oestrus are seen after a further 17 days. Progesterone treatment prior to the introduction of rams prevents the occurrence of short cycles, apparently by delaying the LH surge. The combination of the ram effect and progesterone treatments can provide useful synchrony of oestrus for artificial insemination, and also some gains in fecundity. There is considerable potential for using the effect in intensive breeding programmes.</div>
</front>
</TEI>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Wicri/Asie/explor/AustralieFrV1/Data/Istex/Curation

HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000C61 | SxmlIndent | more

HfdSelect -h $EXPLOR_AREA/Data/Istex/Curation/biblio.hfd -nk 000C61 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/Asie
   |area=    AustralieFrV1
   |flux=    Istex
   |étape=   Curation
   |type=    RBID
   |clé=     ISTEX:43948B536ABB97D44E79C758489F61B8758D2AD0
   |texte=   The induction of oestrus and ovulation in seasonally anovular ewes by exposure to rams
}}

This area was generated with Dilib version V0.6.33.
Data generation: Tue Dec 5 10:43:12 2017. Site generation: Tue Mar 5 14:07:20 2024

	Serveur d'exploration sur les relations entre la France et l'Australie
	Attention, ce site est en cours de développement ! Attention, site généré par des moyens informatiques à partir de corpus bruts. Les informations ne sont donc pas validées.

Serveur d'exploration sur les relations entre la France et l'Australie

The induction of oestrus and ovulation in seasonally anovular ewes by exposure to rams

The induction of oestrus and ovulation in seasonally anovular ewes by exposure to rams

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri