Animal Reproduction (AR)
Animal Reproduction (AR)
Conference Paper

Assisted reproductive technologies (ART) in water buffaloes

Pietro S. Baruselli, Julia G. Soares, Bernardo M. Bayeux, Júlio C.B. Silva, Rodolfo D. Mingoti, Nelcio A.T. Carvalho

Downloads: 3
Views: 794


Our expanding knowledge of ovarian function during the buffalo estrous cycle has given new approaches for the precise synchronization of follicular development and ovulation to apply consistently assisted reproductive technologies (ART). Recent synchronization protocols are designed to control both luteal and follicular function and permit fixed-time AI with high pregnancy rates during the breeding (autumn-winter) and nonbreeding (spring-summer) seasons. Additionally, allow the initiation of superstimulatory treatments at a self-appointed time and provide opportunities to do fixed-time AI in donors and fixed-time embryo transfer in recipients. However, due the scarce results of in vivo embryo recovery in superovulated buffaloes, the association of ovum pick-up (OPU) with in vitro embryo production (IVEP) represents an alternative method of exploiting the genetics of high yeld buffaloes. Nevertheless, several factors appear to be critical to OPU/IVEP efficiency, including antral follicle population, follicular diameter, environment, farm and category of donor. This review discusses a number of key points related to the manipulation of ovarian follicular growth to improve assisted reproductive technologies in buffalo.


artificial insemination, embryo transfer, synchronization.


Adams GP. 1994. Control of ovarian follicular wave dynamics in cattle: implications for synchronization and superstimulation. Theriogenology, 41:19-24.

Ali A, Fahmy S. 2007. Ovarian dynamics and milk progesterone concentrations in cycling and non-cycling buffalo-cows (Bubalus bubalis) during Ovsynch program. Theriogenology, 68:23-28.

Armstrong DT, Holm P, Irvine B, Petersen BA, Stubbings RB, McLean D, Stevens G, Seamark RF. 1992. Pregnancies and live birth from in vitro fertilization of calf oocytes collected by laparoscopic follicular aspiration. Theriogenology, 38:667-678.

Baldrighi J, Sa Filho MF, Batista EO, Lopes RN, Visintin JA, Baruselli PS, Assumpcao ME. 2014. Anti-Mullerian hormone concentration and antral ovarian follicle population in Murrah heifers compared to Holstein and Gyr kept under the same management. Reprod Domest Anim, 49:1015-1020.

Bartolomeu CC. 2003. Estudo da dinâmica folicular durante o tratamento com CIDR-B e Crestar visando, a inseminação artificial em tempo fixo em fêmeas bubalinas (Bubalus bubalis). Thesis. São Paulo, SP: Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo. 149 pp. 

Baruselli PS, Mucciolo RG, Visintin JA, Viana WG, Arruda RP, Madureira EH, Oliveira CA, Molero-Filho JR. 1997. Ovarian follicular dynamics during the estrous cycle in buffalo (Bubalus bubalis). Theriogenology, 47:1531-1547.

Baruselli PS, Madureira EH, Visintin JA, Barnabe VH, Barnabe RC, Amaral R. 1999. Timed insemination using synchronization of ovulation in buffalo. Rev Bras Reprod Anim, 23:360-362.

Baruselli PS, Madureira EH, Visintin JA, Porto Filho RM, Carvalho NAT, Campanile G, Zicarelli L. 2000. Failure oocyte entry into oviduct in superovulated buffalo. Theriogenology, 53:491. (Abstract).

Baruselli PS, Carvalho NAT, Henriquez CHP, Amaral R, Nichi M. 2002. Synchronization of ovulation for timed artificial insemination during the off breeding season in the buffalo. In: Proceedings of the 1st Buffalo Symposium of Americas, 2002, Belém. Belém, PA: Embrapa/CPATU. pp. 418-420.

Baruselli PS, Carvalho NAT, Nichi M, Reichert RH. 2003a. Reduction of hCG dosage in a protocol for synchronization of ovulation for timed artificial insemination during the off breeding season in buffalo.. In: Proceedings. 2nd Congresso Nazionale Sull’Allevamento Del Buffalo, 2003, Roma. Roma: Congresso. v.1, pp. 261-264.

Baruselli PS, Madureira EH, Barnabe VH, Barnabe RC, Berber RCA. 2003b. Evaluation of synchronization of ovulation for fixed timed insemination in buffalo (Bubalus bubalis). Braz J Vet Res Anim Sci, 40:431-442.

Baruselli PS, Carvalho NAT, Gimenes LU, Crepaldi GA. 2007. Fixed-time artificial insemination in buffalo. Ital J Anim Sci, 6:107-118.

Baruselli PS, Ferreira RM, Sales JNS, Gimenes LU, Sá Filho MF, Martins CM, Rodrigues CA, Bó GA. 2011. Timed embryo transfer programs for management of donor and recipient cattle. Theriogenology, 76:1583-1593.

Baruselli PS, Soares JG, Gimenes LU, Monteiro BM, Olazarri MJ, Carvalho NAT. 2013. Control of buffalo follicular dynamics for artificial insemination, superovulation and in vitro embryo production. Buffalo Bull., 32:160-176.

Baruselli PS, Batista EOS, Vieira LM, Ferreira RM, Guerreiro BG, Bayeux BM, Sales JNS, Souza AH, Gimenes LU. 2016. Factors that interfere with oocyte quality for in vitro production of cattle embryos: effects of different developmental & reproductive stages. Anim Reprod, 13:264-272.

Batista EOS, Macedo GG, Sala RV, Ortolan MDDV, Sá Filho MF, Del Vale TA, Jesus EF, Lopes RNVR, Rennó FP, Baruselli PS. 2014. Plasma antimullerian hormone as a predictor of ovarian antral follicular population in Bos indicus (Nelore) and Bos taurus (Holstein) heifers. Reprod Domest Anim, 49:448-452.

Berber RCA, Madureira EH, Baruselli PS. 2002. Comparison of two Ovsynch protocols (GnRH versus LH) for fixed timed insemination in buffalo (Bubalus bubalis). Theriogenology, 57:1421-1430.

Berber RCA, Baruselli PS, Barros CM, Nogueira GP. 2007. Avaliação da liberação de LH e da concentração de progesterona em protocolos Ovsynch e Hetsynch em bubalinos (Bubalus bublis). Braz J Vet Res Anim Sci, 44:38-45.

Bó GA, Baruselli PS, Moreno D, Cutaia L, Caccia M, Tríbulo R, Tríbulo H, Mapletoft RJ. 2002. The control of follicular wave development for self-appointed embryo transfer programs in cattle. Theriogenology, 57:53-72

Bó GA, Baruselli PS, Martinez MF. 2003. Pattern and manipulation of follicular development in Bos indicus cattle. Anim Reprod Sci, 78:307-326.

Boland MP, Goulding D, Roche JF. 1991. Alternative gonadotrophins for superovulation in cattle. Theriogenology, 35:5-17.

Boni R, Roviello S, Zicarelli L. 1996. Repeated ovum pick-up in Italian Mediterranean buffalo cows. Theriogenology, 46:899-909.

Burns DS, Jimenez-Krassel F, Ireland JLH, Knight PG, Ireland JJ. 2005. Numbers of antral follicles during follicular waves in cattle: evidence for high variation among animals, very high repeatability in individuals, and an inverse association with serum follicle-stimulating hormone concentrations. Biol Reprod, 73:54-62.

Camargo LSA, Viana JHM, Sá WF, Ferreira AM, Vale Filho VR. 2005. Developmental competence of oocytes from prepubertal Bos indicus crossbred cattle. Anim Reprod Sci, 85:53-59.

Campanile G, Baruselli PS, Carvalho NAT. 2003. Effect of feed restriction on ovarian activity and recovered oocyte in Murrah buffalo heifers. Bubalus bubalis, 275-278.

Campanile G, Vecchio D, Neglia G, Di Palo R, Prandi A, D'Occhio MJ. 2008. Progesterone and pregnancy status of buffaloes treated with a GNRH agonist. Livest Sci, 115:242-248.

Campanile G, Baruselli PS, Neglia G, Vecchio D, Gasparrini B, Gimenes LU, Zicarelli L, D’Occhio MJ. 2010. Ovarian function in the buffalo and implications for embryo development and assisted reproduction. Anim Reprod Sci, 121:1-11.

Carvalho NAT, Nagasaku EM, Vannucci FS, Toledo LM, Barusseli PS. 2007a. Ovulation and conception rate according intravaginal progesterone device and hCG or GnRH to induce ovulation in buffalo during the off breeding season. Ital J Anim Sci, 6:646-648.

Carvalho NAT, Nichi M, Henriquez CEP, Oliveira CA, Baruselli PS. 2007b. Use of Human chorionic gonadotropin (hCG) for fixed-time artificial insemination in buffalo (Bubalus bubalis). Anim Reprod, 4:98-102.

Carvalho NAT, Soares JG, Porto Filho RM, Gimenes LU, Souza DC, Nichi M, Sales JS, Baruselli PS. 2013. Equine chorionic gonadotropin improves the efficacy of a timed artificial insemination protocol in buffalo during the nonbreeding season. Theriogenology, 79:423-428.

Carvalho NAT, Soares JG, Baruselli PS. 2016. Strategies to overcome seasonal anestrus in water buffalo. Theriogenology, 86:200-206.

Carvalho NAT, Soares JG, Souza DC, Maio JRG, Sales JNS, Martins Junior B, Macari RC, D'Occhio MJ, Baruselli PS. 2017. Ovulation synchronization with estradiol benzoate or GnRH in a timed artificial insemination protocol in buffalo cows and heifers during the nonbreeding season. Theriogenology, 87:333-338.

Danell B. 1987. Oestrous behaviour, ovarian morphology and cyclical variation in folicular system and endocrine pattern in water buffalo heifers. Uppsala: Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences. Thesis. 124 pp.

De Rensis F, Ronci G, Guarneri P, Nguyen BX, Presicce GA, Huszenicza G, Scaramuzzi RJ. 2005. Conception rate after fixed time insemination following ovsynch protocol with and without progesterone supplementation in cyclic and non-cyclic Mediterranean Italian buffaloes (Bubalus bubalis). Theriogenology, 63:1824-1831.

Di Francesco S, Boccia L, Campanile G, Di Palo R, Vecchio D, Neglia G, Zicarelli L, Gasparrini B. 2011. The effect of season on oocyte quality and developmental competence in Italian Mediterranean buffaloes (Bubalus bubalis). Anim Reprod Sci, 123:48-53.

Di Francesco S, Novoa MV, Vecchio D, Neglia G, Boccia L, Campanile G, Zicarelli L, Gasparrini B. 2012. Ovum pick-up and in vitro embryo production (OPU-IVEP) in Mediterranean Italian buffalo performed in different seasons. Theriogenology, 77:148-154.

Ferraz ML, Gimenes LU, Sá Filho MF, Watanabe YF, Joaquim DC, Accorsi MR, Meirelles FV, Baruselli PS. 2007. Effect of OPU interval and bST treatment on embryo production in buffalo. Ital J Anim Sci, 6(suppl. 2).

Ferraz ML, Sa Filho MF, Batista EO, Watanabe YF, Watanabe MR, Dayan A, Joaquim DC, Accorsi MR, Gimenes LU, Vieira LM, Baruselli PS. 2015. Paradoxical effects of bovine somatotropin treatment on the ovarian follicular population and in vitro embryo production of lactating buffalo donors submitted to ovum pick-up. Anim Reprod Sci, 154:1-7.

Frattarelli JL, Lauria-Costab DF, Miller BT, Bergh PA, Scott RT. 2000. Basal antral follicle number and mean ovarian diameter predict cycle cancellation and ovarian responsiveness in assisted reproductive technology cycles. Fertil Steril, 74:512-517.

Fry RC, Simpson TL, Squires TJ. 1998. Ultrasonically guided transvaginal oocyte recovery from calves treated with or without GnRH. Theriogenology, 49:1077-1082.

Gamarra G, Ponsart C, Lacaze S, Le Guienne B, Humblot P, Deloche MC, Monniaux D, Ponter AA. 2015. Dietary propylene glycol and in vitro embryo production after ovum pick-up in heifers with different anti-Mullerian hormone profiles. Reprod Fertil Dev, 27:1249-1261.

Gasparrini B. 2002. In vitro embryo production in buffalo species: state of the art. Theriogenology, 57:237-256.

Gimenes LU, Fantinato Neto P, Arango JSP, Ayres H, Baruselli PS. 2009. Follicular dynamics of Bos indicus, Bos taurus and Bubalus bubalis heifers treated with norgestomet ear implant associated or not to injectable progesterone. Anim Reprod, 6:256. (Abstract).

Gimenes LU, Ferraz ML, Araújo A, Fantinato Neto P, Chiaratti MR, Mesquita LG, Arango JSP, Raposo M, Souza DC, Calomeni GD, Gardinal R, Rodriguez CLV, Trinca LA, Meirelles FV, Baruselli PS. 2010. OPU at different times of a synchronized follicular wave did not affect IVP in Bos indicus, Bos taurus and Bubalus bubalis. Reprod Fertil Dev, 22:293-294.

Gimenes LU, Carvalho NAT, Sá Filho MF, Vannucci FS, Torres-Júnior JRS, Ayres H, Ferreira RM, Trinca LA, Sartorelli ES, Barros CM, Beltran MP, Nogueira GP, Mapletoft RJ, Baruselli PS. 2011. Ultrasonographic and endocrine aspects of follicle deviation, and acquisition of ovulatory capacity in buffalo (Bubalus bubalis) heifers. Anim Reprod Sci, 123:175-179.

Gimenes LU, Ferraz ML, Fantinato-Neto P, Chiaratti MR, Mesquita LG, Sa Filho MF, Meirelles FV, Trinca LA, Renno FP, Watanabe YF, Baruselli PS. 2015. The interval between the emergence of pharmacologically synchronized ovarian follicular waves and ovum pickup does not significantly affect in vitro embryo production in Bos indicus, Bos taurus, and Bubalus bubalis. Theriogenology, 83:385-393.

Goodhand KL, Watt RG, Staines ME, Hutchinson JSM, Broadbent PJ. 1999. In vivo oocyte recovery and in vitro embryo production from bovine donors aspirated at different frequencies or following FSH treatment. Theriogenology, 51:951-961.

Guerreiro BM, Batista EO, Vieira LM, Sa Filho MF, Rodrigues CA, Castro Netto A, Silveira CR, Bayeux BM, Dias EA, Monteiro FM, Accorsi M, Lopes RN, Baruselli PS. 2014. Plasma anti-mullerian hormone: an endocrine marker for in vitro embryo production from Bos taurus and Bos indicus donors. Domest Anim Endocrinol, 49:96-104.

Ireland J, Ward F, Jimenez-Krassel F, Ireland JLH, Smith GW, Lonergan P, Evans ACO. 2007. Follicle numbers are highly repeatable within individual animals but are inversely correlated with FSH concentrations and the proportion of good-quality embryos after ovarian stimulation in cattle. Hum Reprod, 22:1687-1695.

Ireland JL, Scheetz D, Jimenez-Krassel F, Themmen AP, Ward F, Lonergan P, Smith GW, Perez GI, Evans AC, Ireland JJ. 2008. Antral follicle count reliably predicts number of morphologically healthy oocytes and follicles in ovaries of young adult cattle. Biol Reprod, 79:1219-1225.

Jacomini JO, Macedo GG, Carvalho NAT, Sales JN, Baruselli PS. 2014. LH surge in response to the treatment with GnRH analog or estradiol in ovariectomized buffaloes with or without progesterone pre-exposition. Livest Sci, 160:194-198.

Khatir H, Lonergan P, Carolan C, Mermillod P. 1996. Prepubertal bovine oocyte: a negative model for studying oocyte developmental competence. Mol Reprod Dev, 45:231-239.

Liang A, Salzano A, D'Esposito M, Comin A, Montillo M, Yang L, Campanile G, Gasparrini B. 2016. Anti-Mullerian hormone (AMH) concentration in follicular fluid and mRNA expression of AMH receptor type II and LH receptor in granulosa cells as predictive markers of good buffalo (Bubalus bubalis) donors. Theriogenology, 86:963-970.

Lohuis MM. 1995. Potential benefits of bovine embryo-manipulation technologies to genetic improvement programs. Theriogenology, 43:51-60.

Lonergan P, Fair T. 2008. In vitro-produced bovine embryos: dealing with the warts. Theriogenology, 69:17-22.

Macabelli CH, Gimenes L U  Carvalho NAT, Soares JG, Ferraz ML, Watanabe YF, Watanabe O, Ayres H, Meirelles FV, Baruselli PS, Chiaratti MR. 2012. Molecular evaluation of developmental competence of buffalo oocytes collected in vivo during winter and summer. Anim Reprod, 9:674. (Abstract).

Macmillan KL, Thatcher WW. 1991. Effects of an agonist of gonadotropin-releasing hormone on ovarian follicles in cattle. Biol Reprod, 45:883-889.

Majerus V, De Roover R, Etienne D, Kaidi S, Massip A, Dessy F, Donnay I. 1999. Embryo production by ovum pick up in unstimulated calves before and after puberty. Theriogenology, 52:1169-1179.

Manik RS, Palta P, Singla SK, Sharma V. 2002. Folliculogenesis in buffalo (Bubalus bubalis): a review. Reprod Fertil Dev, 14:315-325.

Manjunatha BM, Ravindra JP, Gupta PS, Devaraj M, Nandi S. 2009. Effect of breeding season on in vivo oocyte recovery and embryo production in non-descriptive Indian river buffaloes (Bubalus bubalis). Anim Reprod Sci, 111:376-383.

Mapletoft RJ, Bennett Steward K, Adams GP. 2002. Recent advances in the superovulation in cattle. Reprod Nutr Dev, 42:601-611.

Mondadori RG, Santin TR, Fidelis AA, Porfirio EP, Bao SN. 2010. Buffalo (Bubalus bubalis) pre-antral follicle population and ultrastructural characterization of antral follicle oocyte. Reprod Domest Anim, 45:33-37.

Monniaux D, Barbey S, Rico C, Fabre S, Gallard Y, Larroque H. 2010a. Anti-Mullerian hormone: a predictive marker of embryo production in cattle? Reprod Fertil Dev, 22:1083-1091.

Monniaux D, Rico C, Larroque H, Dalbies-Tran R, Medigue C, Clement F, Fabre S. 2010b. Anti-Mullerian hormone, an endocrine predictor of the response to ovarian stimulation in the bovine species. Gynecol Obstet Fertil, 38:465-470.

Monniaux D, Drouilhet L, Rico C, Estienne A, Jarrier P, Touzé J-L, Sapa J, Phocas F, Dupont J, Dalbiès-Tran R, Fabre S. 2012. Regulation of anti-Müllerian hormone production in domestic animals. Reprod Fertil Dev, 25:1-16.

Monteiro BM, Souza DC, Vasconcellos GSFM, Carvalho NAT, Baruselli PS. 2018. Effect of season on dairy buffalo reproductive performance when using P4/E2/eCG-based fixed-time artificial insemination management. Theriogenology, 119:275-28

Moura AJDR. 2003. Sincronização da ovulação com dispositivo intravaginal de progesterona (CIDR-B®) associado a estrógeno e prostaglandina F2a em búfalas (Bubalus bubalis) tratadas em estações reprodutivas distintas. São Paulo, SP: Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo. Thesis. 129 pp.

Neglia G, Gasparrini B, Caracciolo di Brienza V, Di Palo R, Campanile G, Antonio Presicce G, Zicarelli L. 2003. Bovine and buffalo in vitro embryo production using oocytes derived from abattoir ovaries or collected by transvaginal follicle aspiration. Theriogenology, 59:1123-1130.

Neglia G, Gasparrini B, Salzano A, Vecchio D, De Carlo E, Cimmino R, Balestrieri A, D'Occhio MJ, Campanile G. 2016. Relationship between the ovarian follicular response at the start of an Ovsynch-TAI program and pregnancy outcome in the Mediterranean river buffalo. Theriogenology, 86:2328-2333.

Ohashi OM, Souza JS, Vale WG. 1998. The use of assisted reproduction technology (ART) in buffalo and zebu. In: Proceedings of 4th Follow-up Seminar on Animal Reproduction and Biotechnology for Latin America, Belém, Brazil. Belém, PA. pp.71-79.

Osada H, Kiyoshi Fujii T, Tsunoda I, Takagi K, Satoh K, Kanayama K, Endo T. 1999. Fimbrial capture of the ovum and tubal transport of the ovum in the rabbit, with emphasis on the effects of β(2)-adrenoreceptor stimulant and prostaglandin F(2)α on the intraluminal pressures of the tubal ampullae. J Assist Reprod Genet, 16:373-379.

Palma GA, Tortonese DJ, Sinowatz F. 2001. Developmental capacity in vitro of prepubertal oocytes. Anat Histol Embryol, 30:295-300.

Pontes JHF, Melo Sterza FA, Basso AC, Ferreira CR, Sanches BV, Rubin KCP, Seneda MM. 2011. Ovum pick up, in vitro embryo production, and pregnancy rates from a large-scale commercial program using Nelore cattle (Bos indicus) donors. Theriogenology, 75:1640-1646.

Porto Filho RM, Gimenes LU, Monteiro BM, Carvalho NAT, Ghuman SPS, Madureira EH, Baruselli PS. 2014. Detection of estrous behavior in buffalo heifers by radiotelemetry following PGF2α administration during the early or late luteal phase. Anim Reprod Sci, 144:90-94.

Presicce GA, Jiang S, Simkin M, Zhang L, Looney CR, Godke RA, Yang X. 1997. Age and hormonal dependence of acquisition of oocyte competence for embryogenesis in prepubertal calves. Biol Reprod, 56:386-392.

Pursley JR, Mee MO, Wiltbank MC. 1995. Synchronization of ovulation in dairy cows using PGF2α and GnRH. Theriogenology, 44:915-923.

Revel F, Mermillod P, Peynot N, Renard JP, Heyman Y. 1995. Low developmental capacity of in vitro matured and fertilized oocytes from calves compared with that of cows. J Reprod Fertil, 103:115-120.

Rico C, Fabre S, Medigue C, di Clemente N, Clement F, Bontoux M, Touze JL, Dupont M, Briant E, Remy B, Beckers JF, Monniaux D. 2009. Anti-mullerian hormone is an endocrine marker of ovarian gonadotropin-responsive follicles and can help to predict superovulatory responses in the cow. Biol Reprod, 80:50-59.

Sá Filho MF, Carvalho NAT, Gimenes LU, Torres-Júnior JR, Nasser LFT, Tonhati H, Garcia JM, Gasparrini B, Zicarelli L, Baruselli PS. 2009. Effect of recombinant bovine somatotropin (bST) on follicular population and on in vitro buffalo embryo production. Anim Reprod Sci, 113:51-59.

Saliba WP, Gimenes LU, Drumond R, Bayão H, Alvim M, Baruselli PS, Bastianetto E, Leite R, Gasparrini B. 2013. Efficiency of OPU-IVEP-ET of fresh and vitrified embryos in buffaloes. Buffalo Bull., 32:385-388.

Schmitt EJ, Drost M, Diaz T, Roomes C, Thatcher WW. 1996. Effect of a gonadotropin-releasing hormone agonist on follicle recruitment and pregnancy rate in cattle. J Anim Sci, 74:154-161.

Sendag S, Cetin Y, Alan M, Hadeler K-G, Niemann H. 2008. Effects of eCG and FSH on ovarian response, recovery rate and number and quality of oocytes obtained by ovum pick-up in Holstein cows. Anim Reprod Sci, 106:208-214.

Shaw DW, Farin PW, Washburn SP, Britt JH. 1995. Effect of retinol palmitate on ovulation rate and embryo quality in superovulated cattle. Theriogenology, 44:51-58.

Silva JCB, Rezende RG, Colli MHA, Bayeux BM, Mingoti RD, Ojeda-Rojas OA, Basso AC, Naves JR, Baruselli PS. 2017. In vitro embryo production in buffalo: comparison between calves, prepubertal Heifers and lactating cows. Anim Reprod, 14:766. (Abstract).

Soares JG. 2015. Strategies to increase embryo recovery of superovulated buffaloes [in Portuguese]. Faculty of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, SP. 115 pp.

Soares JG, Carvalho NAT, Souza DC, Basso AC, Vieira AN, Untura RM, Godoi BM, Silva CAM, Sales JNS, Baruselli PS. 2015. Effect of animal category on FTET efficiency in buffaloes. Anim Reprod, 12:628. (Abstract).

Souza AH, Carvalho PD, Rozner AE, Vieira LM, Hackbart KS, Bender RW, Dresch AR, Verstegen JP, Shaver RD, Wiltbank MC. 2015a. Relationship between circulating anti-Mullerian hormone (AMH) and superovulatory response of high-producing dairy cows. J Dairy Sci, 98:169-178.

Souza DC, Carvalho NAT, Soares JG, Monteiro BM, Madureira EH, Baruselli PS. 2015b. Effect of the presence of corpus luteum in lactating buffaloes on the response to the Ovsynch protocol during the breeding season (preliminary results). Anim Reprod, p.629. (Abstract).

Taneja M, Bols PEJ, de Velde AV, Ju J-C, Schreiber D, Tripp MW, Levine H, Echelard Y, Riesen J, Yang X. 2000. Developmental competence of juvenile calf oocytes in vitro and in vivo: influence of donor animal variation and repeated gonadotropin stimulation. Biol Reprod, 62:206-213.

Twagiramungu H, Guilbault LA, Proulx J, Dufour JJ. 1992a. Synchronization of estrus and fertility in beef cattle with two injections of buserelin and prostaglandin. Theriogenology, 38:1131-1144.

Twagiramungu H, Guilbault LA, Proulx J, Villeneuve P, Dufour JJ. 1992b. Influence of an agonist of gonadotropin-releasing hormone (buserelin) on estrus synchronization and fertility in beef cows. J Anim Sci, 70:1904-1910.

Twagiramungu H, Guilbault LA, Dufour JJ. 1995. Synchronization of ovarian follicular waves with a gonadotropin-releasing hormone agonist to increase the precision of estrus in cattle: a review. J Anim Sci, 73:3141-3151.

Van Ty L, Chupin D, Driancourt MA. 1989. Ovarian follicular populations in buffaloes and cows. Anim Reprod Sci, 19:171-178.

Vassena R, Mapletoft RJ, Allodi S, Singh J, Adams GP. 2003. Morphology and developmental competence of bovine oocytes relative to follicular status. Theriogenology, 60:923-932.

Vecchio D, Rossi P, Neglia G, Longobardi V, Salzano A, Bifulco GGC. 2013. Comparison of two synchronization protocols for timed artificial insemination in acyclic Italian Mediterranean Buffalo cows out of the breeding season. Buffalo Bull., 32:479. (Abstract).

Vernunft A, Schwerhoff M, Viergutz T, Diederich M, Kuwer A. 2015. Anti-Muellerian hormone levels in plasma of Holstein-Friesian heifers as a predictive parameter for ovum pick-up and embryo production outcomes. J Reprod Dev, 61:74-79.

Vieira LM, Rodrigues CA, Castro Netto A, Guerreiro BM, Silveira CRA, Moreira RJC, Sá Filho MF, Bó GA, Mapletoft RJ, Baruselli PS. 2014. Superstimulation prior to the ovum pick-up to improve in vitro embryo production in lactating and non-lactating Holstein cows. Theriogenology, 82:318-324.

Vos PLAM, van der Schans A, de Wit AAC, Bevers MM, Willemse AH, Dieleman SJ. 1994. Effects of neutralization of pregnant mares' serum gonadotrophin (PMSG) shortly before or at the preovulatory LH surge in PMSG-superovulated heifers on follicular function and development. J Reprod Fertil, 100:387-393.

Watanabe YF, Souza AH, Mingoti RD, Ferreira RM, Batista EOS, Dayan A, Watanabe O, Meirelles FV, Nogueira MFG, Ferraz JBS, Baruselli PS. 2017. Number of oocytes retrieved per donor during OPU and its relationship with in vitro embryo production and field fertility following embryo transfer. Anim Reprod, 14:635-644.

Wiltbank MC, Pursley JR. 2014. The cow as an induced ovulator: timed AI after synchronization of ovulation. Theriogenology, 81:170-185.

Wolfenson D, Thatcher WW, Savio JD, Badinga L, Lucy MC. 1994. The effect of a GnRH analogue on the dynamics of follicular development and synchronization of estrus in lactating cyclic dairy cows. Theriogenology, 42:633-644.

Zicarelli L. 1997. Reproductive seasonality in buffalo. Bubalus bubalis, 4(suppl. 4):29-52.

Zicarelli L. 2007. Can we consider buffalo a non precocious and hypofertile species? Ital J Anim Sci, 6:143-154.

5b8fdd900e8825791259a5ef animreprod Articles
Links & Downloads

Anim Reprod

Share this page
Page Sections