Titre : | Ultrasonography of the conceptus development from days 15 to 60 of pregnancy in non-cyclic recipient mares (2015) |
Auteurs : | E. Sant Anna Monteiro Da Silva ; J.C. De Figueiredo Pantoja ; J.N.P. Puoli Filho ; C. Meira |
Type de document : | Article : texte imprimé |
Dans : | CIENCIA RURAL (vol.45(3), 2015-03-01) |
Article en page(s) : | p.512-518 |
Langues: | Anglais |
Mots-clés : |
Equivoc Activité Ovarienne ; Alimentation Du Jeune ; Développement ; Embryon ; Foetus ; Gestation ; Jument ; Pharmacologie ; Transfert D'Embryon ; Trouble Génital |
Résumé : | The present study evaluated the development of equine conceptus transferred to non-cyclic recipient mares treated with altrenogest. Twenty four mares were used as embryo recipients during the ovulatory phase (Control group; n=8) or anestrus/transitional phases (Altrenogest group; n=16) and were evaluated by transrectal ultrasonography, at five day intervals, to monitor the development of embryonic vesicles from 15 to 45 days of pregnancy and embryo proper/fetus from 20 to 60 days. Embryonic vesicle's features such as shape, embryo location within the vesicle and umbilical cord development were similar between cyclic and non-cyclic recipient mares. The embryonic vesicle and embryo proper/fetus growth was significant (P<0.05) between 15 and 60 days of gestation in Altrenogest and Control groups, except for days 20 to 30, where embryonic vesicle growth decrease was observed (P>0.05). The embryonic vesicle and embryo proper/fetus growth was similar (P>0.05) when gestational days were compared between groups. The similarity in conceptus growth between cyclic and non-cyclic recipient mares during early pregnancy indicates that the uterine environment of non-cyclic recipient mares treated with progestins provides similar conditions for the development of transferred embryos. |
Cote du document numérique : | 16758 |
Classement cheval : | C03 |