Studies on the induction of parturition in ewes by a dexamethasone injection
نویسندگان
چکیده
منابع مشابه
Induction of parturition in ewes with dexamethasone or dexamethasone and cloprostenol.
Darturition is believed to be initiated when adrenocorticotropic hormone (ACTH) from the fetal pituitary gland causes a release of cortisol from the fetal adrenal cortex (1). The fetal cortisol reduces placental progesterone production and increases placental estrogen production, resulting in release of prostaglandin F2, (PGF) from the uterus (1). Consequently, uterine activity increases, the c...
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15-Ketodihydro-PGF2α, Progesterone and Cortisol Profiles in Heifers after Induction of Parturition by Injection of Dexamethasone
In order to study rapid changes in 15-ketodihydro-PGF2 alpha, cortisol and progesterone in the period preceding parturition in cattle, pre-term parturition was induced in 4 late pregnant heifers. Parturitions were induced by 2 intramuscular injections of 20 mg dexamethasone with a 24-h interval. The first injection was made on days 254, 258, 264 and 265 in gestation, respectively. Twenty-four h...
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ژورنال
عنوان ژورنال: Japanese Journal of Sheep Science
سال: 1985
ISSN: 0389-1305,2186-1013
DOI: 10.11595/jpnjsheepsci1964.1984.26