Effect of initial GnRH and time of insemination on reproductive performance in cyclic and acyclic beef heifers subjected to a 5-d Co-synch plus progesterone protocol

Author:

Helguera I. López,Whittaker P.,Behrouzi A.,Mapletoft R.J.,Colazo M.G.

Funder

Livestock Research Branch

Alberta Agriculture and Forestry

Publisher

Elsevier BV

Subject

Equine,Animal Science and Zoology,Food Animals,Small Animals

Reference26 articles.

1. A review of current timed-AI (TAI) programs for beef and dairy cattle;Colazo;Can Vet J,2014

2. Page 18 in Part II: reference of beef cow-calf management practices;NAHMS. National Animal Health Monitoring Systems,2007

3. Decreasing the interval between GnRH and PGF2α from 7 to 5 days and lengthening proestrus increases timed-AI pregnancy rates beef cows;Bridges;Theriogenology,2008

4. Two doses of prostaglandin improve pregnancy rates to timed-AI in a 5-day progesterone-based synchronization protocol in beef cows;Kasimanickam;Theriogenology,2009

5. Application of one injection of prostaglandin F2α in the five-day Co-synch + CIDR protocol for estrous synchronization and resynchronization of dairy heifers;Rabaglino;J Dairy Sci,2010

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