Superovulation response in buffaloes () to different treatment regimes of Folltropin

Ambrose, D.J.; Singla, S. K.; Jailkhani, Sujata; Prakash, B.S.; Madan, M. L.

doi:10.1016/0093-691x(91)90157-9

Cited by 8 publications

(3 citation statements)

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“…Studies on superovulation among buffaloes have been carried out both in the river (Drost et al, 1983;Madan, 1984;Karaivanov, 1986;Mehmood et al, 1989;Alexiev, 1990;Ambrose et al, 1991;Alonso et al, 1994) and swamp buffaloes (Thungtanawat et al, 1981;Nityawardana et al, 1982;Parnpai et al, 1985;Chantaraprateep et al, 1989;Jainudeen, 1989;Venitkul, 1989) and have included work in countries such as the USA, Thailand, Bulgaria, Malaysia, Pakistan, Philippines, Egypt and India. Recently some reports have come in from countries such as Brazil (Basurelli et al, 1999;Carvalho et al, 2000) and Vietnam (Uoc et al, 1992;Nguyen et al, 1997).…”

Section: Superovulationmentioning

confidence: 99%

Reproductive Biotechnologies for Improvement of Buffalo: The Current Status

Purohit¹,

Duggal²,

Dadarwal³

et al. 2003

Asian Australas. J. Anim. Sci

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Reproductive biotechnologies continue to be developed for genetic improvement of both river and swamp buffalo.Although artificial insemination using frozen semen emerged some decades back, there are still considerable limitations. The major problem appears to be the lack of efficient methods for estrus detection and timely insemination. Controlled breeding experiments in the buffalo had been limited and similar to those applied in cattle. Studies on multiple ovulation and embryo transfer are essentially a replica of those in cattle, however with inherent problems such as lower number of primordial follicles on the buffalo ovary, poor fertility and seasonality of reproduction, lower population of antral follicles at all stages of the estrous cycle, poor endocrine status and a high incidence of deep atresia in ovarian follicles, the response in terms of transferable embryo recovery has remained low with 0.51 to 3.0 per donor and pregnancy rates between 15 to 30%. In vitro production of buffalo embryos is a valid alternative to recovery of embryos by superovulation. This aspect received considerable attention during the past decade, however the proportion of embryos that develops to the blastocyst stage is still around 25-30% and hence the in vitro culture procedures need substantial improvement. Embryo cryopreservation procedures for direct transfer post thaw need to be developed for bubaline embryos. Nuclear transfer and embryo cloning is a technique that has received attention in various species during recent years and can be of immense value in buffaloes as they have a low rate of embryo recoveries by both in vitro and in vivo procedures. Gender pre-selection, genome analysis, gene mapping and gene transfer are a few of the techniques that have been studied to a limited extent during recent years and are likely to be included in future studies on buffaloes. Very recently, reproductive biotechnologies have been applied to feral buffaloes as well, but the results obtained so far are modest. When fully exploited they can play an important role in the preservation of endangered species.

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Section: Superovulationmentioning

confidence: 99%

Reproductive Biotechnologies for Improvement of Buffalo: The Current Status

Purohit¹,

Duggal²,

Dadarwal³

et al. 2003

Asian Australas. J. Anim. Sci

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“…The birth of buffaloes using Multiple Ovulation and Embryo Transfer (MOET) has been reported in Brazil and other countries 1,2 . However, in large-scale, the use of such technique is limited due to the low embryo recovery rate 1,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21 .…”

Section: Introductionmentioning

confidence: 99%

Transporte de oócitos in vitro através do oviduto de búfalas e vacas de corte cruzadas

Carvalho

Soares

Vannucci

et al. 2013

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

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The present study was conducted to verify if the elevation of plasma concentrations of estradiol during superovulatory treatments affects the oocyte transport in buffalo females, as well as if the inferior quality of buffalo oocytes and/or some functional difference on the oviduct of these animals is responsible for the low embryo recovery rate in superovulated buffaloes when compared to cows subjected to the same treatment. Oviducts of 10 buffaloes and 15 of cows, treated to induce a single ovulation were used. The oviducts were placed on Petri dishes and received the following treatments: 5 buffalo oocytes with no E2 (G-BufBuf and G-BovBuf), 5 bovine oocytes with no E2 (G-BufBov and G-BovBov), 5 buffalo oocytes with E2 (G-BufE2Buf and G-BovE2Buf) and 5 bovine oocytes with E2 (G-BufE2Bov and G-BovE2Bov; factorial 2x2x2). Oocytes were incubated for 24h. Subsequently, oviducts were washed and oocytes were recovered and counted. Since no interactions were found between E2 treatment, oviducts and oocytes species, main effects were analyzed separately. Recovery rate and number of oocytes was higher on cattle compared to buffaloes (35.0+8.6% and 1.4+0.3 vs. 10.0±4.6% and 0.5±0.2, respectively; p<0.05); no effect of E2 treatment was observed on recovery rate and number of oocytes (29.8±9.0% and 1.3±0.4 vs. 16.9±6.1% and 0.7±0.2, respectively; p>0.05); the number of buffaloes and bovine oocytes recovered were similar (1.4±0.4 and 0.6±0.2, respectively; p>0.05). Oocytes recovery rate showed a trend (P=0.07) to be higher when buffalo oocytes were implanted when compared to bovine oocytes (35.2±9.2% vs. 12.9±5.4%). Present results suggest that oocyte transport by the oviduct of buffaloes and bovine was not dependent on oocytes species or E2 supplementation to the culture medium.

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“…Inúmeros estudos foram realizados no Brasil e no mundo com o objetivo de avaliar a eficiência da superovulação e da transferência de embriões na espécie bubalina (ALVAREZ et al, 1994;BARUSELLI et al, 1994b;OBA et al, 1994;CARVALHO et al, 2002;CAMPANILE et al, 2010). Embora tenham sido reportados nascimentos de búfalos com o emprego da SOV e TE em diversos países (DROST et al, 1983;DROST et al, 1988;MISRA et al, 1990;ZICARELLI, 1992;BARUSELLI, 1994;BARUSELLI et al, 1994a), a utilização dessa técnica na espécie ainda apresenta limitações, ligadas principalmente à baixa taxa de recuperação embrionária (MISRA et al, 1990;AMBROSE et al, 1991;BARUSELLI, 1994;ZICARELLI et al, 1994a, b;MADAN;PALTA, 1996;BARUSELLI et al, 2000;ZICARELLI et al, 2000;. Atualmente, búfalas superovuladas produzem em média de 1 a 3 embriões viáveis por colheita (CARVALHO et al, 2002;TYAGI, 2007;NEGLIA, GIANLUCA et al, 2010), o que é inferior ao número médio de embriões recuperados em bovinos (10 embriões totais e 6 transferíveis; BOLAND; GOULDING; ROCHE, 1991).…”

Section: Introductionunclassified

Estratégias para aumentar a recuperação de estruturas embrionárias de búfalas superovuladas

Soares¹

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Superovulation response in buffaloes () to different treatment regimes of Folltropin

Cited by 8 publications

References 0 publications

Reproductive Biotechnologies for Improvement of Buffalo: The Current Status

Reproductive Biotechnologies for Improvement of Buffalo: The Current Status

Transporte de oócitos in vitro através do oviduto de búfalas e vacas de corte cruzadas

Estratégias para aumentar a recuperação de estruturas embrionárias de búfalas superovuladas

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