Efficacy of different protocols of ovulation synchronization and resynchronization in Argentinian buffalo herds

Authors

  • Gustavo Crudeli Catedra de Teriogenologia, Facultad de Ciencias Veterinarias, Universidad Nacional del Nordeste, Corrientes, Argentina
  • Jose Luis Konrad Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Argentina
  • Rodolfo Luzbel de la Sota Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, Buenos Aires, Argentina
  • Roberto Yuponi Catedra de Teriogenologia, Facultad de Ciencias Veterinarias, Universidad Nacional del Nordeste, Corrientes, Argentina
  • Natalia Vallejos Catedra de Teriogenologia, Facultad de Ciencias Veterinarias, Universidad Nacional del Nordeste, Corrientes, Argentina
  • Walter Dario Cardona-Maya BIOGEM Grupo de Investigacion. Facultad de Ciencias Agrarias. Universidad Nacional de Colombia, Sede Medellin, Colombia
  • Jesus Alfredo Berdugo Grupo de Reproduccion, Sede de Investigacion Universitaria, Universidad de Antioquia, Medellin, Colombia

Keywords:

Bubalus bubalis, buffaloes, artificial insemination, pregnancy, FTAI, embryonic mortality

Abstract

During the last years buffalo reproductive researchers have been tried to develop and apply fixed timed artificial insemination protocols to increase pregnancy rates to maximize improvement. The objective of this paper is to evaluate the pregnancy rates of different protocols of synchronization (Ovsynch and progesterone implants) and resynchronization of ovulation in a meat water buffalo herd during reproductive season of 2016. 194 mature Mediterranean females, were randomly assigned to four different protocols, ultrasound evaluation were used to determine cyclicity (presence of corpus luteum or follicles ≥7 mm de diameter). 18 days after insemination all females were resynchronized and at day 25 ultrasound were performed, those nonpregnant females were inseminated 28 days after first insemination. All inseminations were performed by the same technician and only one bull was used. InfoStat software was used, statistical significance was considered when p value was lower than α of the 5%. No statistical significance were found within the protocols. Early embryonic dead 50 days after IA was 3.4%. Pregnancy rate was 47.9% and 53.5% for insemination and reinsemination respectively and the final pregnancy rate after the adjust for early pregnancy loss 73.2%, during the 28 days of the breeding period. The results obtained allow breeders to choose the best pharmacological option to use FTAI in their herds based on their own needs to improve production without affecting pregnancy rates.

Downloads

Download data is not yet available.

Metrics

Metrics Loading ...

Author Biography

Gustavo Crudeli, Catedra de Teriogenologia, Facultad de Ciencias Veterinarias, Universidad Nacional del Nordeste, Corrientes, Argentina



Downloads

Published

2019-06-28

How to Cite

Crudeli, G., Konrad, J. L., de la Sota, R. L., Yuponi, R., Vallejos, N., Cardona-Maya, W. D., & Berdugo, J. A. (2019). Efficacy of different protocols of ovulation synchronization and resynchronization in Argentinian buffalo herds. Buffalo Bulletin, 38(2), 335–343. Retrieved from https://kuojs.lib.ku.ac.th/index.php/BufBu/article/view/1910

Issue

Section

Original Article