Test 1: 12 obstetrics Flashcards
difficult birth, extended labor
dystocia
normal, safe labor and birth
eutocia
successive fertilization of two or more ova by different sires
Superfecundation
successive fertilization of two or more ova of different ovulations at different times resulting in the presence of embryos of unlike ages
Superfetation
inhibition of uterine contractions
Tocolytic
inducing contractions of the uterus resulting in expulsion of a fetus
ecbolic
signs of approaching parturition in cow
24-48 hrs prepartum
relaxation of pelvic, especially sacrosciatic ligaments, “springer”, vulvar relaxation and lengthening, cervical relaxation, vulvar mucus discharge from liquification of cervical mucus, udder enlargement/edema, +/- ventral edema, udder secretion changes from honey-like to yellowish, cloudy, viscous colostrum; restlessness, anorexia in the last several hours prepartum.
signs of approaching parturition in mare
relaxation of sacrosciatic ligaments and vulva, udder development 0-6 weeks prepartum, udder edema, oozing of colostrum (“waxing”) 0-48 hours prepartum, restlessness, sweating, anorexia, vulvar discharge not evident; udder secretion becomes “sticky”, cloudy, milky.
in sow, bitch and queen signs of partuition
privacy-seeking, nesting, vulva flaccid, enlarged, and edematous, mammary gland enlargement.
gestation length of cow
280
gestation length of mare
340
gestation length of ewe
146
gestation length of doe
146
gestation length of sow
114
gestation length of bitch
63
gestation length of queen
64
which females have corpus luteum throughout preg
cow
doe
sow
bitch
which females do not have CL throughout all of preg
ewe
mare
queen
how is parturition initiated
- fetus makes cortisol, this causes progesterone to convert into estrogen in the ewe, mare and queen, in the cow, doe, sow and bitch the placenta will make estrogen
- this will lead to PGF2a production
- causes luteolysis of CL and/or uterine contrations
- oxytocin is released
- ferguson’s reflex
- fetal expulsion