IMPROVING DAIRY CATTLE FERTILITY: THE ROLE OF ASPIRIN ON PROSTAGLANDIN SECRETION AND THE USE OF AN ALTERNATIVE RESYNCHRONIZATION PROTOCOL TO IMPROVE PREGNANCY RATES IN LACTATING DAIRY COWS
Spencer, Jennifer Ann. (2014). IMPROVING DAIRY CATTLE FERTILITY: THE ROLE OF ASPIRIN ON PROSTAGLANDIN SECRETION AND THE USE OF AN ALTERNATIVE RESYNCHRONIZATION PROTOCOL TO IMPROVE PREGNANCY RATES IN LACTATING DAIRY COWS. Theses and Dissertations Collection, University of Idaho Library Digital Collections. https://www.lib.uidaho.edu/digital/etd/items/spencer_idaho_0089n_10449.html
- Title:
- IMPROVING DAIRY CATTLE FERTILITY: THE ROLE OF ASPIRIN ON PROSTAGLANDIN SECRETION AND THE USE OF AN ALTERNATIVE RESYNCHRONIZATION PROTOCOL TO IMPROVE PREGNANCY RATES IN LACTATING DAIRY COWS
- Author:
- Spencer, Jennifer Ann
- Date:
- 2014
- Keywords:
- 5-day CIDR-Cosynch Aspirin Dairy Cows Non-Steroidal Anti-Inflammatory Drugs Prostaglandin F2a Resynchronization
- Program:
- Animal and Veterinary Science
- Subject Category:
- Animal sciences
- Abstract:
-
In cattle, early embryonic loss may occur due to the premature secretion of prostaglandin F2α (PGF2α) during days 14-16 after fertilization. The objective of the first experiment in this study was to determine aspirin's effects on PGF2α during the luteal phase of the estrous cycle in lactating dairy cows by characterizing blood plasma prostaglandin metabolites (PGFM) and progesterone (P4) concentrations. Aspirin decreased PGFM for 30 hours after last bolus administration and increased the day to luteolysis. The objective of the second experiment was to determine the effectiveness of the initial gonadotropin-releasing hormone (GnRH) in a 5-day CIDR (controlled internal drug releasing inserts)-Cosynch resynchronization protocol on fertility to second insemination in lactating dairy cows. No differences in pregnancy rate per artificial insemination (PR/AI) were observed between no GnRH (treatment) and GnRH (control) for the second insemination. Indicating that GnRH may not be necessary at the initiation of a CIDR-Cosynch resynchronization protocol.
- Description:
- masters, M.S., Animal and Veterinary Science -- University of Idaho - College of Graduate Studies, 2014
- Major Professor:
- Ahmadzadeh, Amin
- Committee:
- Dalton, Joseph; Shafii, Bahman
- Defense Date:
- 2014
- Identifier:
- Spencer_idaho_0089N_10449
- Type:
- Text
- Format Original:
- Format:
- application/pdf
- Rights:
- In Copyright - Educational Use Permitted. For more information, please contact University of Idaho Library Special Collections and Archives Department at libspec@uidaho.edu.
- Standardized Rights:
- http://rightsstatements.org/vocab/InC-EDU/1.0/