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Titolo:
MATERNAL AND CONCEPTUS FACTORS AFFECTING HISTOTROPHIC NUTRITION AND SURVIVAL OF EMBRYOS
Autore:
ASHWORTH CJ;
Indirizzi:
ROWEN RES INST ABERDEEN AB2 9SB SCOTLAND
Titolo Testata:
Livestock production science
fascicolo: 2, volume: 44, anno: 1995,
pagine: 99 - 105
SICI:
0301-6226(1995)44:2<99:MACFAH>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
RETINOL-BINDING-PROTEIN; OVINE TROPHOBLAST PROTEIN-1; EARLY-PREGNANCY; PROGESTERONE CONCENTRATION; SHEEP CONCEPTUS; UTERINE FLUIDS; OVULATION RATE; HEAT-STRESS; ENDOMETRIUM; EWE;
Keywords:
SHEEP; GOAT; NUTRITION; EMBRYO SURVIVAL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
43
Recensione:
Indirizzi per estratti:
Citazione:
C.J. Ashworth, "MATERNAL AND CONCEPTUS FACTORS AFFECTING HISTOTROPHIC NUTRITION AND SURVIVAL OF EMBRYOS", Livestock production science, 44(2), 1995, pp. 99-105

Abstract

It is well established that embryo survival in sheep is influenced bya range of factors including maternal nutrition, maternal age, stage of the breeding season, number of oocytes shed at the time of mating and maternal endocrinology. However, the impact of these factors on thefinely balanced relationship between the embryo and the uterus is less well understood. Ovine and caprine conceptuses secrete a range of proteins during the second and third weeks after mating, which are believed to be involved in overcoming luteolytic mechanisms, and in stimulating biochemical changes in the endometrium to facilitate the maintenance of pregnancy. Furthermore, endometrial secretory products are involved in the nutrition and growth of the developing conceptus. Endometrial secretory activity is modulated by changes in levels of ovarian steroids, which in turn are affected by extrinsic factors including maternal feed intake and the stage of the breeding season, and by intrinsic factors such as ovulation rate.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 12:53:04