Embryonic Mortality in Farm Animals: A Seminar in the CEC Programme of Coordination of Research on Livestock Productivity and Management [held in Brussels on the 11th and 12th of December 1984]J.M. Sreenan, M.G. Diskin Springer Science & Business Media, 1986 - 280 pages Reproductive wastage is a major inefficiency in all livestock production with embryonic mortality accounting for a major portion of this loss. Accordingly the Commission of the European Communities encouraged the organisation of a seminar on embryonic mortality in farm animals which was held in Brussels on the 11th and 12th of December 1984. This book contains the text of the papers, discussions and final summary presented at that Seminar. As a background to the Seminar, the extent and timing of embryonic loss was described for farm animals. Particular consideration was then given to the various mechanisms and signals, both embryonic and uterine in origin, that are so far known to be involved in the establishment of pregnancy. Possible causes of embryonic death including physiological, endocrinological, genetic and immunological components were outlined and discussed. The final summary contains general conclusions from the Seminar and recommendations for future research work on this topic. J.M. Sreenan M.G. Diskin July 1985. ******************** THE EXTENT AND TIMING OF EMBRYONIC MORTALITY IN THE COW J. M. Sreenan & M. G. Diskin, The Agricultural Institute, Belclare, Tuam, Galway, Ireland ABSTRACT The extent and timing of embryonic mortality in heifers, normal cows and repeat breeder cows has been reviewed. |
Contents
| 1 | |
| 12 | |
| 44 | |
| 46 | |
| 74 | |
| 93 | |
ACCUMULATION OF SEX STEROIDS IN PREIMPLANTATION PIG BLASTOCYSTS AND THEIR IMPORTANCE FOR AN UNDISTURBED EA... | 109 |
PERIOVULATORY HORMONE PROFILES IN RELATION TO EMBRYONIC DEVELOPMENT AND MORTALITY IN PIGS | 119 |
EMBRYONIC MORTALITY IN STEROID IMMUNIZED SHEEP | 171 |
EMBRYO LOSS FOLLOWING EMBRYO TRANSFER IN CATTLE AND SWINE | 179 |
THE ROLE OF THE MALE IN EMBRYONIC MORTALITY Cattle and Sheep | 195 |
GENETIC CONSTITUTION OF EARLY STAGE PIG EMBRYOS AND EMBRYO MORTALITY | 207 |
CYTOLOGICAL PARAMETERS FOR RATING BOVINE EMBRYO QUALITY | 216 |
EMBRYONIC LOSSES AND THE ROLE OF NUTRITION STATISTICAL CONSIDERATIONS | 223 |
NUTRITION AND EMBRYO LOSS IN FARM ANIMALS | 235 |
UTERINE PATHOGENS AND EMBRYONIC MORTALITY | 249 |
DISCUSSION | 126 |
THE INFLUENCE OF PROGESTERONE PROFILE ON EMBRYO SURVIVAL IN EWES | 135 |
PROGESTERONE AND EMBRYO SURVIVAL IN THE COW | 142 |
PREGNANCY DIAGNOSIS AND EMBRYONIC MORTALITY IN THE COW | 159 |
DISCUSSION | 168 |
PORCINE EMBRYO AND FETAL LOSS RELATED TO INFECTION | 259 |
DISCUSSION | 267 |
GENERAL CONCLUSIONS AND OUTLOOK | 275 |
LIST OF PARTICIPANTS | 278 |
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Common terms and phrases
androstenedione Bazer Beier Biol blastocyst bovine embryos breeds cattle cells chromosomal abnormalities corpus luteum cows culture cycle dairy detection Diskin early pregnancy factor effect egg transfer embryo survival embryo transfer embryonic death embryonic development embryonic loss embryonic mortality embryonic mortality rate endometrium EPF-activity ewes farm animals Fert fertilisation rate fertilization fetal genetic gestation gilts goats groups Heap heifers hormone implantation increase infection insemination interval J.Reprod.Fert karyotype LH peak litter luteal phase mating Merino mice Morton morulae mouse non-pregnant non-surgical normal oestrogen oestrus onset of oestrus oviduct ovulation rate oxytocin pig embryos polyploidy pregnancy diagnosis pregnancy rate preimplantation progesterone progesterone concentration progesterone levels prolificacy prostaglandin proteins rabbit recipients repeat breeder Reprod reproductive rosette inhibition test Rowson semen serum sheep sows species spermatozoa Sreenan stage steroids studies superovulation survival rate swine Table Theriogenology translocation trophoblast twin uptake uterine environment uterine horn uterus vitro Wilmut
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