Endocrine causes of seasonal and lactational anestrus in farm animals

Directorate-General For Translation European Commission

Description

Proceedings of a seminar held at Mariensee (D) on 2-3 October 1984
Medical and biological research
Veterinary sector and animal health

Informations

• Publié par: EUROPEAN-COMMISSION
• Nombre de lectures: 160
• Langue: English
• Poids de l'ouvrage: 3 Mo

Extrait

F. ELLENDORFF/F. ELSAESSER
(EDITORS)
ENDOCRINE CAUSES OF
SEASONAL AND LACTATIONAL
ANESTRUS IN FARM ANIMALS ENDOCRINE CAUSES OF SEASONAL AND LACTATIONAL ANESTRUS
IN FARM ANIMALS CURRENT TOPICS IN VETERINARY MEDICINE AND ANIMAL SCIENCE
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Cow, edited by J.M. Sreenan G. Wittman and S.A. Hall
Patterns of Growth and Develop­ Transport of Animals Intended for
ment in Cattle, edited by H. de Boer and Breeding, Production and Slaughter, edited by
J. Martin R. Moss
Respiratory Diseases in Cattle, Welfare and Husbandry of Calves,
edited by W.B. Martin edited by J.P. Signoret
Calving Problems and Early Factors Influencing Fertility in the
Viability of the Calf, edited by B. Hoffmann, Postpartum Cow, edited by H. Karg and
I.L. Mason and J. Schmidt E. Schallenberger
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the European Community, edited by J.C. Dairy Breeds and Dairy Beef Crosses, edited
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M. Ristic and I. Mclntyre and Diagnosis, edited by R.C. Wardley and
J.R. Crowther
Control of Reproductive Functions
in Domestic Animals, edited by W. Jochle and Indicators Relevant to Farm
D.R. Lamond Animal Welfare, edited by D. Smidt
The Laying Hen and its Environ­ Farm Animal Housing and
ment, edited by R. Moss Welfare, edited by S.H. Baxter, M.R. Baxter
and J.A.D. MacCormack
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R.J. Jorgensen and E.J.L. Soulsby edited by G. Eikelenboom
The Problem of Dark-Cutting in Manipulation of Growth in Farm
Beef, edited by D.E. Hood and P.V. Tarrant Animals, edited by J.F. Roche and
D. O'Callaghan
The Welfare of Pigs, edited by
W. Sybesma Latent Herpes Virus Infections in
Veterinary Medicine, edited by G. Wittmann,
The Mucosal Immune System,
R.M. Gaskell and H.-J. Rziha
edited by F.J. Bourne
Grassland Beef Production, edited
Laboratory Diagnosis in Neonatal
by W. Holmes
Calf and Pig Diarrhoea, edited by P.W. de
Leeuw and P.A.M. Guinee Recent Advances in Virus
Diagnosis, edited by M.S. McNulty and J.B.
Advances in the Control of
McFerran
Theileriosis, edited by A.D. Irvin,
M.P. Cunningham and A.S. Young The Male in Farm Animal Repro­
duction, edited by M. Courot
Fourth International Symposium on
Bovine Leukosis, edited by O.C. Straub Endocrine Causes of Seasonal and
Lactational Anestrus in Farm Animals, edited
Muscle Hypertrophy of Genetic
by F. Ellendorff and F. Elsaesser
Origin and its Use to Improve Beef Produc­
tion, edited by J.W.B. King and F. Menissier ENDOCRINE CAUSES
OF SEASONAL AND
LACTATIONAL ANESTRUS
IN FARM ANIMALS
A Seminar in the CEC Programme of Co-ordination of Research
on Livestock Productivity and Management, held at the Institut
fur Tierzucht und Tierverhalten, Mariensee,
Bundesforschungsanstalt fur Landwirtschaft (FAL),
October 2-3, 1984
Sponsored by the Commission of the European Communities,
Directorate-General for Agriculture, Co-ordination of Agricultural
Research
Edited by
F. Ellendorff, F. Elsaesser
Institut fur Tierzucht und Tierverhalten, Mariensee
Federal Republic of Germany
1985 MARTINUS NIJHOFF PUBLISHERS WJ
a member of the KLUWER ACADEMICS GROUP BB
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Library of Congress Cataloging in Publication Data
Main entry under title:
Endocrine causes of seasonal and lactational anestrus
in farm animals.
(Current topics in veterinary medicine and animal
sc ience)
1. Anestrus—Congresses. 2. Veterinary
endocrinology—Congresses. 1. Ellendorff, F.
II. Elsaesser, F. III. C.E.C. Programme of Coordination
of Research on Livestock Productivity and Management.
IV. Commission of the European Communities.n
of Agricultural Research. V. Series.
SF768.3.E54 1985 636.089'8172 85-10646
ISBN 0-89838-738-8
ISBN8
EUR 9554 EN
Book information
Publication arranged by: Commission of the European Communities, Direc­
torate-General Information Market and Innovation, Luxembourg
Copyright/legal notice
© 1985 by ECSC, EEC, EAEC, Brussels-Luxembourg.
All rights reserved. No part of this publication may be reproduced, stored in a
retrieval system, or transmitted in any form or by any means, mechanical,
photocopying, recording, or otherwise, without prior written permission of the
publishers,
Martinus Nijhoff Publishers, P.O. Box 163, 3300 AD Dordrecht,
The Netherlands.
Neither the Commission of the European Communities nor any person acting on
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following information.
PRINTED IN THE NETHERLANDS CONTENTS Page
PREFACE 1
SESSION I: SEASONAL ANESTRUS IN THE EWE
SEASONAL ANESTRUS - PROBLEMS AND PERSPECTIVES 3
G.E. Lamming
ENDOCRINE BASIS OF SEASONAL ANESTRUS IN SHEEP 6
W. Haresign, B.J. McLeod, G.M. Webster, K. Worthy
GENETICS AND PHYSIOLOGY OF FOLLICLE RECRUITMENT 19
AND MATURATION DURING SEASONAL ANESTRUS
R. Webb, I.K. Gauld
BREED DIFFERENCES IN THE BREEDING SEASON IN SHEEP 2
J.F. Quirke, J.P. Hanrahan
LIGHT CONTROL OF REPRODUCTION IN THE EWE 44
J. Thimmonier, R. Ortavant
EFFECTS OF MELATONIN ON THE TIME OF ONSET OF THE 55
BREEDING SEASON IN DIFFERENT BREEDS OF SHEEP
J.F. Roche, J.P. Hanrahan, J.F. Quirke, E. Ronayne
INDUCTION OF OVULATION IN ANESTROUS EWES 66
USING GONADOTROPHINS
A.A. McNeilly, J.M. Wallace and D.T. Baird
INDUCED BREEDING IN ANESTROUS MILKING EWES OF DAIRY 7
BREEDS: COMPARISON OF NORGESTOMET, MEDROXYPROGESTERONE
AND FLUOROGESTONE IN TWO REGIMES OF PMSG
T. AliFakiotis
DISCUSSION 83
SESSION II: SEASONAL ANESTRUS IN THE SOW AND MARE
STIMULATION OF OVARIAN ACTIVITY IN THE PONY MARE 85
DURING WINTER ANESTRUS
B. Bour, E. Palmer, M.A. Driancourt
PRACTICAL CONTROL OF ANESTRUS IN THOROUGHBRED 98
BROODMARES
W.A. Allen
SEASONAL ANESTRUS IN WILD SOWS 10
R. Mauget
PHOTOPERIOD AND FERTILITY IN THE PIG 119
C. Claus, U. Weiler, R. Hahn
DISCUSSION 131 VI
Page
SESSION III: LACTATIONAL ANESTRUS IN THE PIG
HYPOTHALAMIC-PITUITARY-OVARIAN RESPONSES TO WEANING - 133
RETROSPECTIVE EVIDENCE EOR THE CAUSE OF LACTATIONAL
ANESTRUS?
G.R. Foxcroft
ENDOCRINE INTERACTIONS DURING LACTATIONAL 145
ANESTRUS IN SOWS
F. Ellendorff, F. Elsaesser, N. Parvizi,
D. Smidt
RELEVANCE OF PROLACTIN TO LACTATIONAL AND POST- 154
WEANING ANESTRUS IN THE SOWS
D.F.M. van de Wiel, P. Booman, A.H. Willemse and
M.M. Bevers
EFFECTS OF BROMOCRIPTINE TREATMENT DURING 165
LACTATIONAL ANESTRUS IN PIGS
E. Mattioli, E. Seren
DISCUSSION 179
SESSION IV: POST PARTUM ANESTRUS
POST PARTUM ANESTRUS, PROBLEMS AND PERSPECTIVES 181
H. Karg
COMPARATIVE ASPECTS OF THE POSTPARTUM PERIOD IN6
DOMESTIC ANIMALS
M. Vandeplassche
REPRODUCTIVE POTENTIAL DURING THE POST PARTUM 19
PERIOD IN COWS
M. Terqui
ENDOCRINE MECHANISMS CONTRIBUTING TO POST PARTUM 206
ANESTRUS IN DAIRY AND BEEF CATTLE
E. Schallenberger, D.L. Walters
STUDIES ON THE ENDOCRINE AND ENVIRONMENTAL FACTORS 221
INFLUENCING POST PARTUM ACYCLICITY IN DAIRY COWS
BASED ON PROGESTERONE PROFILES
J. Henriksen, A. Mikel Jensen
DISCUSSION 233
GENERAL CONCLUSIONS4
LIST OF PARTICIPANTS6