EFFECT OF COMBINATION OF GnRH AND PGF2α FOR ESTRUS SYNCHRONIZATION ON ONSET OF ESTRUS AND PREGNANCY RATE IN DIFFERENT POSTPARTUM IN SWAMP BUFFALO IN KAMPAR REGENCY

Abstract

The purposes of this study were to investigate the effect of administration of GnRH and PGF2α on onset of estrus and conception rate in different postpartum swamp buffalo (Bubalus bubalis). Twenty postpartum (pp) buffalo-cows were divided into four groups of five buffaloes as follows: Group A (30 day pp), Group B (45 dpp), Group C (60 dpp), and Group D (75 dpp). The buffaloes in each group were injected intramuscularly with 3 ml GnRH at day 0, followed by intramuscular injection of 2.5 ml PGF2α, 10 ml) at day 7 after GnRH injection. Observation of estrus was performed 24 h after injection of PGF 2α. Artificial insemination was performed 18 h after estrus signs clearly visible. The result of study showed that there were no difference (p>0.05) among treatments on the percentages of estrus (100%), onset of estrus (37.4 to 38.4 h), duration of estrus (16.8 to 18.2 h) and conception rate (100%). In conclusion, buffalo-cows in Kampar Regency can be served as early as 30 days post partum using combination of 3 ml GnRH and 2.5 ml of PGF2α.

Current status of assisted reproductive technologies in buffaloes

“…Select synch 100 77.14-100 Sianturi et al, 2012;Yendraliza et al, 2011 GnRH+ PGF2α + LH -64.2 De Araujo Berber et al, 2002CIDR-Ovsynch 58.3-100 18.18-66.67 Atabay et al, 2019Alyas et al, 2013;Campanile et al, 2005;Chaikhun et al, 2012;Kalwar et al, 2015;Murugavel et al, 2009 CIDR-Ovsynch + hCG on day 9 97.0-100 58.04-60.38 Atabay et al, 2019 Norgestomet + Ovsynch -71.4 Malik et al, 2010 Madureira, Berber et al, 2002;Chaikhun, Promdireg, & Suthikrai, 2010). These works provided evidence that buffaloes respond to hormonal treatment and that a new follicular wave emergence occurs due to the ovulation of the dominant follicle present at the time of the first GnRH injection.…”

Combined Controlled-Internal Drug Release and Ovsynch Synchronization Protocol Does not Improve Fertility Outcome In Buffaloes

“…P4-releasing intravaginal device (PRID) and CIDR have been used with ovsynch programs for treatment of buffaloes suffering from inactive ovaries (Yendraliza Zesfin et al, 2011;Barile, 2012). After device removal, the plasma P4 concentration sharply decrease and those the GnRH, LH and FSH get increase leading to resumption of the ovarian activity (Zerbe, 1999).…”

Efficacité de deux méthodes de synchronisation des chaleurs à base de prostaglandine F2α chez le zébu (<em>Bos indicus</em>) Goudali

“…Des taux de fertilité de 46,3 % et 22,1 % ont été rapportés chez les vaches Bos taurus bouchères par Mialot et al (2003) et Yendralisa et al (2011, et laitières par Stevenson et al (1999). De même, Yendraliza et al (2011) rapportent que le traitement des bufflonnes à différentes périodes post-partum avec 3 ml de GnRH à J0, suivi de 2,5 ml de PGF2α à J7 améliore leur efficacité de reproduction. Kouamo et al (2020) The objective of the study was to evaluate two prostaglandin F2α (alfaprostol 2 mg) based heat synchronization protocols, one short with a single injection and artificial insemination (AI) on observed heat, the other long with a double injection at 11 days› interval and AI at a fixed time 80 hours after the second injection.…”