Pregledni rad
SPECIAL FEATURES OF THE HORMONAL STATUS OF MARES DURING PREGNANCY
Marija Zaninović
; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Jelena Ramljak
; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Ante Ivanković
orcid.org/0000-0002-2523-8694
Sažetak
Hormonal status of the mares during pregnancy is significantly different in relation to other domestic animals. Throughout the pregnancy the mare and fetus hormonal interacts with each other. During early pregnancy developing embryo signals its presence to the maternal organism to prolong the lifespan of the primary corpus luteum. Also, the production of placental estrogen and progestagens in later stages of pregnancy, dependes on the precursors synthesized in increased fetal gonads and in adrenal glands of the fetus. In the last stage of pregnancy, it is fetus who initiates parturition. Mechanism of parturation is not fully understood, but is considered to be associated with increased amounts of corticosteroids in the amniotic fluid produced by the adrenal glands of the fetus. Fully understanding of the hormonal features of pregnancy in mares is vital, because only than man could inhance fertility rate in a horse wich is currently very low.
Ključne riječi
Hrčak ID:
68075
URI
Datum izdavanja:
10.3.2011.
Posjeta: 3.160 *