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Effect of long-term and short-term progestagen treatment on follicular development and pregnancy rate in cyclic ewes.
The aim of this study was to evaluate the effect of the length of a progestagen treatment (12 d vs. 6 d) on follicular dynamics, estrus synchronization and pregnancy rate using medroxyprogesterone… Expand
Ovarian dynamics, serum estradiol and progesterone concentrations during the interovulatory interval in goats.
Ovarian changes determined by daily transrectal ultrasonic scanning, and its correlation with serum progesterone (P4) and estradiol (E2) concentrations were studied in seven cyclic Saanen goats.… Expand
New treatments associated with timed artificial insemination in small ruminants.
Timed artificial insemination (TAI) is a very important tool in production systems, as it has a direct impact on cost-efficiency by reducing labour resulting from oestrus detection. However, to make… Expand
The effect of subluteal levels of exogenous progesterone on follicular dynamics and endocrine patterns during early luteal phase of the ewe.
Nineteen Corriedale ewes were treated with an im dose of a PGF2alpha during the luteal phase to synchronize estrus. After ovulation had been detected by using ultrasonography (Day 0); the ewes were… Expand
Short term primings with different progestogen intravaginal devices (MAP, FGA and CIDR) for eCG-estrous induction in anestrus ewes
Abstract Two experiments with 260 ewes compared the effectiveness of different progestogens and the amount of medroxyprogesterone acetate (MAP) contained in the intravaginal devices with short term… Expand
Re-use of intravaginal progesterone devices associated with the Short-term Protocol for timed artificial insemination in goats.
Because intravaginal devices impregnated with 0.3 g of progesterone (i.e., CIDR-G) contain remaining hormone after their use in a Short-term Protocol (5 to 7 d of treatment), the reuse of these… Expand
Relation between progesterone concentrations during the early luteal phase and follicular dynamics in goats.
We studied the relationship between progesterone (P4) concentrations early in the estrus cycle and follicular dynamics in dairy goats. We used seven untreated goats (control group) and six… Expand
Endocrine, luteal and follicular responses after the use of the short-term protocol to synchronize ovulation in goats.
- A. Menchaca, V. Miller, V. Salveraglio, E. Rubianes
- Biology, Medicine
- Animal reproduction science
- 1 November 2007
The effect of the so-called Short-Term Protocol (5-day progesterone treatment+PGF(2)alpha) on ovarian activity and LH surge was studied in goats. The goats received 250IU eCG at the time of device… Expand
The pattern and manipulation of ovarian follicular growth in goats.
The understanding of the dynamics and regulation of follicle development in the goat has increased in recent years due to the use of ultrasonography. Previous findings observed in other ruminants… Expand
Follicular recruitment and ovulatory response to FSH treatment initiated on day 0 or day 3 postovulation in goats.
The present study evaluates the effect of the presence of a large growing follicle at the onset of superovulatory treatment on follicular recruitment and ovulatory response in dairy goats. The… Expand