Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Fetal development in cattle with multiple ovulations.

S E Echternkamp1

  • 1USDA, Roman L. Hruska U.S. Meat Animal Research Center, Clay Center, NE 68933.

Journal of Animal Science
|August 1, 1992
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Possible role of IGF2 receptors in regulating selection of 2 dominant follicles in cattle selected for twin ovulations and births.

Domestic animal endocrinology·2013
Same author

Effect of postweaning diet on ovarian development and fertility in replacement beef heifers.

Journal of animal science·2013
Same author

Identification of an ionotropic glutamate receptor AMPA1/GRIA1 polymorphism in crossbred beef cows differing in fertility.

Journal of animal science·2013
Same author

MicroRNA expression profile in bovine cumulus-oocyte complexes: possible role of let-7 and miR-106a in the development of bovine oocytes.

Animal reproduction science·2012
Same author

Increased abundance of aromatase and follicle stimulating hormone receptor mRNA and decreased insulin-like growth factor-2 receptor mRNA in small ovarian follicles of cattle selected for twin births.

Journal of animal science·2012
Same author

Factors affecting pregnancy rate to estrous synchronization and fixed-time artificial insemination in beef cattle.

Journal of animal science·2011
Same journal

The effects of feed intake and fiber type on apparent ileal and total tract digestibility and hindgut disappearance of energy and nutrients in growing pigs.

Journal of animal science·2026
Same journal

Effects of dietary octapeptin supplementation on growth performance, intestinal morphology, immune function, and serum metabolism of weaned piglets.

Journal of animal science·2026
Same journal

Dynamic shifts in the serum lipidome of dogs with obesity before and after weight loss: a pilot study.

Journal of animal science·2026
Same journal

Effects of a second iron injection and sire line on growth performance, hemoglobin levels, antioxidative status, and whole-body iron retention in piglets.

Journal of animal science·2026
Same journal

Supplementing Organic Zinc Enhances Growth and Blood Parameters to Preserve Ovarian Function of Awassi Lambs Raised in a High Summer Temperature Environment.

Journal of animal science·2026
Same journal

Blood cell counts and chemistry in steers with experimentally induced liver abscesses with or without ruminal acidosis.

Journal of animal science·2026
See all related articles

Increasing ovulation rates in cows enhances productivity, but higher ovulation rates decrease fetal development and calf birth weight. Cows can gestate up to five fetuses, with pregnancy terminating above this number.

Area of Science:

  • Reproductive biology
  • Animal science
  • Veterinary medicine

Background:

  • Follicle-stimulating hormone (FSH) is used to induce superovulation in cattle.
  • Ovulation rate influences pregnancy outcomes and fetal development in cows.
  • Understanding the limits of bovine gestation is crucial for improving beef cattle productivity.

Purpose of the Study:

  • To evaluate the effect of induced ovulation rate on multiple bovine fetus development.
  • To determine the impact of increased ovulation rates on fertilization, fetal viability, and calf birth characteristics.
  • To investigate the relationship between the number of fetuses and maternal hormonal and placental development.

Main Methods:

  • 379 lactating and nonlactating parous cows were treated with 12 mg of FSH-P to induce superovulation.

Related Experiment Videos

  • Ovulation and fertilization rates were assessed, and pregnancy outcomes were monitored through fetal development and calving.
  • Maternal progesterone and estrone sulfate concentrations, as well as placental weight, were measured at various gestational stages.

    • Main Results:

    • Ovulation rates ranged from 1 to 27 corpora lutea (CL); fertilization rate (80.0%) was unaffected by ovulation rate.
    • Normal fetal development decreased significantly with increasing ovulation rates (e.g., 100% for 1-2 CL, 8.9% for >10 CL).
    • Multiple births (twins to quintuplets) resulted in decreased calf birth weight and gestational length; placental weight per fetus also decreased with more fetuses.

    Conclusions:

    • Ovulation rate is a primary limiting factor for increasing beef cattle productivity.
    • Bovine females can gestate up to three fetuses per uterine horn (total of five fetuses), with pregnancy termination occurring above this threshold.
    • Superovulation protocols require careful consideration of the negative impacts on fetal development and maternal resources.