Effects of P.G. 600 on the onset of estrus and ovulation rate in gilts treated with Regu-mate.

@article{Estienne2001EffectsOP,
  title={Effects of P.G. 600 on the onset of estrus and ovulation rate in gilts treated with Regu-mate.},
  author={M. Estienne and A. Harper and B. Horsley and C. E. Estienne and J. Knight},
  journal={Journal of animal science},
  year={2001},
  volume={79 11},
  pages={
          2757-61
        }
}
Three experiments assessed the onset of estrus and ovulation rate in gilts treated with gonadotropins after the withdrawal of an orally active progestin. In Exp. 1, all cycling gilts received the progestin (Regu-mate; Intervet America Inc., Millsboro, DE) at a rate of 15 mg/d for 18 d. Twenty-four hours after the last feeding of Regu-mate, 32 gilts received an i.m. injection of 400 I.U. PMSG and 200 I.U. hCG (P.G. 600, Intervet America, Inc.), and 32 gilts received an i.m. injection of… Expand
Case Study: Synchronization of Estrus and Fertility in Gilts Administered P.G. 600® After Treatment with Regu-mate® for 14 or 18 Days
TLDR
In summary, the precision of estrus synchronization and reproduction was greater in gilts given P.G. 600® after 18 d compared with 14-d Regu-mate® treatment. Expand
Effect of P.G. 600 on the timing of ovulation in gilts treated with altrenogest.
TLDR
Mating gilts 12 and 24 h after first detection of estrus, as is common in the swine industry, may not have been the optimal breeding regimen, and as a consequence, pregnancy rate and litter size were not altered. Expand
Characteristics of estrous cycles in gilts treated with gonadotropins after estrus or treatment with a progestogen.
TLDR
The results of these experiments suggest that P.G. 600 administered to gilts that have already obtained puberty may cause abnormal estrous cycles and demonstrate to swine producers the need to correctly classify replacement gilts as prepubertal or cycling before administering the product. Expand
Effects of estrus synchronization using Matrix® followed by treatment with the GnRH agonist triptorelin to control ovulation in mature gilts.
TLDR
The results indicate that gilts receiving 100-400μg of triptorelin at 120h after LMF had the greatest ovulation synchrony 24-48h following treatment, which provides important information for developing a procedure for a single insemination in synchronized gilts. Expand
Synchronization of estrus and ovulation in sows not conceiving in a scheduled fixed-time insemination program.
TLDR
A treatment with 20mg altrenogest per day per animal, followed by 800 IU eCG and 50 microg the GnRH-analogue D-Phe(6)-LHRH is appropriate to synchronize estrus and ovulation of sows diagnosed as non-pregnant to reintegrate them back into a scheduled fixed-time insemination program. Expand
Improving ovulation in gilts using anti-inhibin serum treatment combined with fixed-time artificial insemination.
TLDR
An improved high-yield FTAI protocol for sexually mature gilts using AIS was devised; this protocol had a greater superovulation efficiency than the FTAI using PMSG. Expand
Study on the oestrous synchronization in gilts by using progestin altrenogest and hCG: its effect on the follicular development, ovulation time and subsequent reproductive performance.
  • K. Kaeoket
  • Biology, Medicine
  • Reproduction in domestic animals = Zuchthygiene
  • 2008
TLDR
Using progestin altrenogest alone can be used to synchronize the oestrous cycle in gilts without unenthusiastic effect on the follicular development, ovulation time and subsequent reproductive performances. Expand
Effect of different estrus synchronization systems on embryo quality in multiparous sows and prepuberal gilts.
TLDR
It can be suggested that the differences in the number of embryos isolated from both ovaries after these two treatments systems in prepuberal gilts and multiparous sows may be a result of age-dependent different response to gonadotropins and the reproductive competence of these females. Expand
Fertility of gilts with prolonged preinsemination anestrus after progestagen-eCG treatment
TLDR
Results demonstrate that progestagen treatment may be an effective tool for increasing gilts’ reproductive efficiency and reducing the number of gilts culled from the breeding herd due to prolonged preinsemination anestrus. Expand
Design and biological effects of a vaginally administered gel containing the GnRH agonist, triptorelin, for synchronizing ovulation in swine.
TLDR
A novel gel formulation was selected for intravaginal delivery of the GnRH agonist (triptorelin) for synchronizing ovulation in pigs and the optimum time to give a single fixed time AI (SFT-AI) after administration of 200 μg of triptorelin in 1.2% gel (OvuGel®) at 96 h after weaning was tested. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 13 REFERENCES
Effects of progesterone pretreatment on fertility of gilts mated at an induced pubertal estrus.
TLDR
Results indicate that pretreatment with progesterone up to the day before PMSG might improve follicular development and ovulation rate at the pubertal estrus with a dose of 750 IU of PMSG but not with the 400 IU (PG600). Expand
Influence of norgestomet in combination with gonadotropins on induction of estrus and ovulation in prepubertal gilts.
TLDR
Results indicated that norgestomet before PG600 did not enhance estrus expression or ovulation compared with PG600 alone, but use of PG600 increased the proportions of gilts that expressed estrus and ovulated compared with controls. Expand
Induction of fertile estrus in prepuberal gilts by treatment with a combination of pregnant mare's serum gonadotropin and human chorionic gonadotropin.
TLDR
Gilts that were heavier than the median for each farm were in heat sooner and more were detected in heat, but no other reproductive traits differed between heavy and light gilts. Expand
Effect of nutrition on embryonal mortality in gilts: association with progesterone.
TLDR
The timing of the change in feed allowance after mating is crucial for demonstrating effects of nutrition on embryonal survival in gilts, and progesterone may mediate these effects. Expand
Synchronization of estrus in swine with allyl trenbolone (RU-2267).
TLDR
The dose range of the orally active progestin, allyl trenbolone (RU-2267), for effective synchronization of estrus in swine was determined, and the percentage of animals displaying a post-treatment estrus (estrous response) and the average number of corpora were calculated. Expand
Differences in follicular morphology, steroidogenesis and oocyte maturation in naturally cyclic and PMSG/hCG-treated prepubertal gilts.
TLDR
The results indicate that the pattern of follicular development in naturally cyclic and in PMSG/hCG-treated gilts is dissimilar and suggests that the ovaries of gonadotrophin-treated prepubertal gilts are functionally different from the ovary of mature females. Expand
Effect of intrauterine position of conceptus development, placental and endometrial release of progesterone and estrone in vitro, and concentration of steroid hormones in fetal fluids throughout gestation in swine.
TLDR
It is indicated that intrauterine position in swine has a limited effect on conceptus development and on placental and endometrial steroidogenic activity. Expand
RECOVERY OF IMMATURE EGGS PENETRATED BY SPERMATOZOA FOLLOWING INDUCED OVULATION IN THE PIG
TLDR
In the pig, as in most mammalian species examined, the eggs are normally ovulated as secondary oocytes, but on rare occasions, primary oocytes have also been recovered from the Fallopian tubes of rats and mice, but these immature eggs do not appear to be fertilizable even though spermatozoa may pass through the fallopian tubes. Expand
Controlled reproduction in pigs
TLDR
The artificial control of oestrous and ovulation in pigs pregnancy testing in pigs control of farrowing more frequent farrowing in pigs increasing litter size in pigs embryo transfer and in vitro fertilization in pigs breeding pigs at younger ages. Expand
10 – THE CONTROL OF OVULATION
...
1
2
...