Effect of timing of prostaglandin administration, controlled internal drug release removal and gonadotropin releasing hormone administration on pregnancy rate in fixed-time AI protocols in crossbred Angus cows

Author:

Kasimanickam R.,Collins J.C.,Wuenschell J.,Currin J.C.,Hall J.B.,Whittier D.W.

Publisher

Elsevier BV

Subject

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

Reference38 articles.

1. Patterson DJ, Kojima FN, Smith MF. A review of methods to synchronize estrus in replacement beef heifers and postpartum cows. J Anim Sci 81 (E. Suppl. 2):E166-77. Available from: http://www.asas.org/symposia/03esupp2/jas2402.pdf.

2. NAHMS, National Animal Health Monitoring Service. Sparse use of reproductive management technology for beef heifers and cows. USDA-APHIS Centre for epidemiology and Animal Health, Fort Collins, CO; 1994.

3. NAHMS, National Animal Health Monitoring Service. Changes in US beef cow-calf producers. Part IV. USDA-APHIS Centre for epidemiology and Animal Health, Fort Collins, CO; 1998.

4. Synchronization of ovulation in dairy cows using PGF2a and GnRH;Pursley;Theriogenology,1995

5. Effect of time of artificial insemination on pregnancy rates, calving rates, pregnancy loss, and gender ratio after synchronization of ovulation in lactating dairy cows;Pursley;J Dairy Sci,1998

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