Half dose of prostaglandin F2a is effective to induce luteolysis in the synchronization of ovulation protocol for fixed-time artificial insemination in buffalo (Bubalus bubalis)

Baruselli, Pietro Sampaio; Berber, R. C. A.; Madureira, E. H.; Carvalho, N. A. T.

doi:10.1590/s1413-95962003000600002

Cited by 4 publications

(2 citation statements)

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“…Twagiramungu et al (1994) observed that when PGF2α was administered after determining the CL with ultrasonography, 60-70% animals were detected in estrus within 4 days of post PG injection, which is lower than the present study where 90.32% animals were detected in estrus within 3 days of post PG administration. Baruselli et al (2003) and Pursley et al (1997) reported that the pregnancy rate achieved in cows and buffaloes were 30-50% through different synchronization and TAI, and this result is inconsistence with the findings of present study where pregnancy rate was 67.85%.…”

Section: Resultscontrasting

confidence: 99%

Monitoring the Sonographic Ovarian Dynamics and Pregnancy Rate in Cyclic Murrah Buffalo Cows Synchronized with Prostaglandin F2α

Harun‐Or‐Rashid

Phulia

Hasan

et al. 2020

J Anim Reprod Biotechnol

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The objective of this research work was to know ovarian dynamics and pregnancy rate of cyclic Murrah buffalo cows with induced estrus by administration of prostaglandin F2α (PGF2α) and timed artificial insemination (TAI) with frozen thawed semen. A total of 31 female buffaloes were selected for the study. The buffalos having matured CL observed by ultrasonography were given one intra muscular injection of cloprostenol 500 μg and TAI was performed using frozen thawed semen of Indian Murrah buffalo bull. Results showed that 90.32% (significantly, at p < 0.05) cows explore the sign of heat after injection of PG and 67.85% (significantly, at p < 0.05) cows were become pregnant out of 28 inseminated (TAI) cows. In the 28 inseminated (TAI) cows, average number of smaller and larger size of follicles were non-significantly (p > 0.05) higher at day 3 post PG injection, but the medium size of follicles was nonsignificantly (p > 0.05) higher at PG injection. At day 3 post PG injection the diameter of follicles was significantly (p < 0.05) higher, but the diameter of CL was significantly (p < 0.01) lower compared at PG injection. At PG injection the diameter of largest follicle was non-significantly differences (p > 0.05) in between pregnant and non-pregnant cows. But at day 3 post PG injection it was significantly (p < 0.01) higher in pregnant cows compared to non-pregnant cows. The number of small, medium, and large follicles at PG injection and at day 3 post PG injection were non-significantly (p > 0.05) difference in between pregnant and non-pregnant buffalo cows. Finally, it is concluded that the CL was effectively regresses and induced the sign of heat in buffalo cows and after AI the cows were become pregnant with significant rate. The study will help to the veterinarian and researcher to know the efficacy of PG injection and AI for reproductive efficiency in buffalo cows.

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Section: Resultscontrasting

confidence: 99%

Monitoring the Sonographic Ovarian Dynamics and Pregnancy Rate in Cyclic Murrah Buffalo Cows Synchronized with Prostaglandin F2α

Harun‐Or‐Rashid

Phulia

Hasan

et al. 2020

J Anim Reprod Biotechnol

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“…The 100% pregnancy rate in C treatment (300mg GnRH+5mL PGF2α) probably resulted in 100% clear signs of estrus. The appearance of a clear sign of lust can make it easier to predict the exact time of AI (Baruselli et al 2003). Irikura et al (2003) stated that the administration of GnRH combined with PGF2α in heifers resulted in a 100% pregnancy rate indicating 100% estrus.…”

Section: Ai Success Ratementioning

confidence: 99%

Reproductive Performance of Swamp Buffalo with Various Dosages of Gonadotropin-Releasing Hormone (GnRH)

2023

Int J Vet Sci

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This study aims to determine the reproductive performance of Swamp buffalo with various dosage of gonadotropinreleasing hormone (GnRH). The study subjects were Swamp buffaloes (n=16) with an average age of about 5-6 years, a normal estrus cycle, non-pregnant, and had no history of reproductive disease. Estrus synchronization was performed with an injection of 5mL PGF2α hormone. GnRH was injected on the 8th day with various doses (A=without GnRH injection, B=200mg/2mL, C=300mg/3mL, and D=400mg/4mL). Variables observed were superovulation response, the success of artificial insemination, and speed and intensity of onset of estrus in Swamp buffalo. The results showed that the average superovulation response was 81.25%. The success rate of AI was on average 75% with the highest success rate (100%) with C treatment (300g GnRH + 5mL PGF2α). Swamp buffaloes that have been treated have onset of estrus ranging from 72-81hrs and high intensity of estrus. The administration of GnRH 300mg (group C) and 400mg (group D) gave the best superovulation response (100%) and a 100% pregnancy with the administration of 300mg of GnRH (group C). Administration of GnRH 200mg (group B) showed the fastest estrus onset and all treated buffaloes showed high estrus intensity with a score of +++.

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Avaliação da liberação de LH e da concentração de progesterona em protocolos Ovsynch e Heatsynch em bubalinos (Bubalus bubalis)

Berberi¹,

Barrosi

Nogueira

et al. 2007

Braz. J. Vet. Res. Anim. Sci.

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O objetivo desse estudo foi avaliar a liberação de LH durante os protocolos de sincronização da ovulação em bubalinos. Para tanto, quinze búfalas multíparas receberam 25 mg de Lecirelina no Dia 0, e 150 mg de D-Cloprostenol no Dia 7. No Dia 8, foi aplicado benzoato de estradiol nas búfalas do Grupo 1 (0,5 mg, n = 5) e do Grupo 2 (1,0 mg, n = 5). No Dia 9, os animais receberam 25mg de Lecirelina (Controle, n = 5). Para mensuração das concentrações plasmáticas de LH foram colhidas amostras de sangue da veia jugular no Dia 7, e em seguida em intervalos de 3 horas até completar 72 horas após a aplicação de PGF2a. Para avaliação da liberação de LH foram comparados os momentos de ocorrência do pico LH em relação à PGF2a, as durações, as amplitudes e a área sob o pico de pré-ovulatório de LH. As búfalas dos Grupos Controle, 1 e 2 apresentaram picos pré-ovulatórios de LH em 51 + 0,0 horas, 47,3 + 2,7 horas e 47,0 + 3,8 horas após a aplicação da PGF2a, respectivamente (P>;0,05). A duração do pico de LH foi menor no Controle (7,8 + 1,5 horas) do que nos Grupos 1 e 2 (10,5 + 1,5 horas vs. 10,8 + 2,4 horas, respectivamente; P < 0,05). A amplitude média dos picos pré-ovulatórios de LH foram de 4,5 + 0,4 ng/mL, 4,0 + 0,4 ng/mL e 4,3 + 0,8 ng/mL para os Grupos Controle, 1 e 2, respectivamente (P >; 0,05). A área sob o pico de LH no Controle (4,8 ± 0,7) foi menor do que as áreas dos Grupos 1 e 2 (8,8 ± 2,5 vs. 8,7 ± 2,2, respectivamente; P < 0,05). Em resumo, a aplicação de benzoato de estradiol proporcionou maior duração e área do pico pré-ovulatório de LH do que a administração de GnRH em protocolos Ovsynch em bubalinos.

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Half dose of prostaglandin F2a is effective to induce luteolysis in the synchronization of ovulation protocol for fixed-time artificial insemination in buffalo (Bubalus bubalis)

Cited by 4 publications

References 0 publications

Monitoring the Sonographic Ovarian Dynamics and Pregnancy Rate in Cyclic Murrah Buffalo Cows Synchronized with Prostaglandin F2α

Monitoring the Sonographic Ovarian Dynamics and Pregnancy Rate in Cyclic Murrah Buffalo Cows Synchronized with Prostaglandin F2α

Reproductive Performance of Swamp Buffalo with Various Dosages of Gonadotropin-Releasing Hormone (GnRH)

Avaliação da liberação de LH e da concentração de progesterona em protocolos Ovsynch e Heatsynch em bubalinos (Bubalus bubalis)

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