Reproductive performance of ewes after 5-day treatment with intravaginal inserts containing progesterone in combination with injection of prostaglandin f2alpha

Reproduction in Domestic Animals = Zuchthygiene
A B DixonE K Inskeep

Abstract

Three experiments were conducted with a total of 1579 ewes to examine reproductive performance in response to synchronization of oestrus during the breeding season, using controlled internal drug releasing (CIDR-G) inserts in regimens designed to provide high concentrations of circulating progesterone. In experiment 1, treatment with two CIDR-G inserts for 12 days produced conception rate (79%) and prolificacy (1.9) to first service equivalent to breeding at natural oestrus (56% and 2.0, respectively). Pregnancy rates to two service periods were 90 and 79%, respectively. In experiments 2 and 3, progesterone was delivered by a single CIDR-G insert for 5 days in combination with prostaglandin F2alpha (PGF2alpha; 5 mg i.m., twice, 3 h apart) the day before (experiment 2), or at insert removal (experiment 3). The combined treatments improved rates of synchronization of oestrus (p<0.01) by 23 and 20% points, respectively, and pregnancy rates to the first service period by 19 (p<0.05) and 13 (p<0.01) percentage points, respectively, compared to treatment with PGF2alpha alone. It is concluded that the combination of treatment for 5 days with a CIDR-G insert and two injections of 5 mg PGF2alpha, the day before, or the day of insert rem...Continue Reading

References

Jan 1, 1978·Journal of Agricultural and Food Chemistry·P R Reeves
Sep 1, 1991·Journal of Reproduction and Fertility·M A DriancourtR C Fry
Jun 1, 1974·Journal of Animal Science·P E LewisE K Inskeep
Jun 1, 1969·Journal of Reproduction and Fertility·T D Quinlivan, T J Robinson
Oct 1, 1973·Journal of Animal Science·R H Douglas, O J Ginther
Apr 1, 1972·Journal of Animal Science·H W Hawk, H H Conley
Jan 1, 1980·Journal of Reproduction and Fertility·S Acritopoulou, W Haresign
Jul 1, 1995·Journal of Animal Science·J A HoughtonE K Inskeep
Nov 1, 1993·Biology of Reproduction·F N SchrickE K Inskeep
Jan 1, 1996·Domestic Animal Endocrinology·S K JohnsonP E Lewis
Jun 22, 2001·Journal of Dairy Science·M C Lucy
May 20, 2003·Animal Reproduction Science·E RubianesB Carbajal
Jun 24, 2003·Animal Reproduction Science·A C O Evans
May 1, 1980·Theriogenology·A J Hackett, H A Robertson
Sep 1, 1983·Theriogenology·J S Ottobre, E K Inskeep
Aug 1, 1993·Theriogenology·F N Schrick, E K Inskeep

❮ Previous
Next ❯

Citations

Apr 4, 2009·Tropical Animal Health and Production·Hayatu AwelS K Khar
Nov 9, 2011·Tropical Animal Health and Production·Massoud Talebkhan GaroussiMehrdad Mohri
Dec 17, 2008·Animal Reproduction Science·Ignacio Contreras-SolisA Gonzalez-Bulnes
Aug 4, 2009·Journal of Veterinary Pharmacology and Therapeutics·J D RoweD C Wagner
Nov 11, 2010·Journal of Veterinary Pharmacology and Therapeutics·J D RoweD Hallford
May 19, 2016·Animal Science Journal = Nihon Chikusan Gakkaihō·Marlon Knights, Doolarie Singh-Knights
Jun 21, 2018·Animal Science Journal = Nihon Chikusan Gakkaihō·Gabriela Azenha Milani SorianoCaliê Castilho
Jun 18, 2015·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·D J CottleA G Fahey

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.