Ovulation

Bioactivity of ovulation inducing factor (or nerve growth factor) in bovine seminal plasma and its effects on ovarian function in cattle. https://www.ncbi.nlm.nih.gov/pubmed/25796284

Double ovulation and occurrence of twinning in alpacas (Vicugna pacos). https://www.ncbi.nlm.nih.gov/pubmed/25963129

Ovulation-inducing factor: a protein component of llama seminal plasma (Downloadable article, 2010)

  1. Ovarian follicular synchronization, ovulation and oocyte development in llamas and alpacas. University of Saskatchewan.

(2007) Proceedings of the Annual Conference of the American Association of Veterinary Anatomists, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada, 22-24, June 2006. Anatomia Histologia Embryologia, 36, 396-399.

  1. Biological Characterization of Ovulation-Inducing Factor (OIF) in Llama Seminal Plasma. University of Saskatchewan.

Aba, M. A., M. A. Quiroga, N. Auza, M. Forsberg & H. Kindahl (1999) Control of ovarian activity in Llamas (Lama glama) with medroxyprogesterone acetate. Reproduction in Domestic Animals, 34, 471-476.

Adam, C. L., D. A. Bourka, C. E. Kyle, P. Young & T. G. McEvoy. 1992. Ovulation and embryo recovery in the llama. 125-127. Newmarket: R & W Publications.

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Adams, G. P., P. G. Griffin & O. J. Ginther (1989) In situ morphologic dynamics of ovaries, uterus and cervix in llamas. Biology of Reproduction, 41, 551-558.

Adams, G. P. & M. H. Ratto (2013) Ovulation-inducing factor in seminal plasma: a review. Animal Reproduction Science, 136, 148-156.

Adams, G. P., M. H. Ratto, W. Huanca & S. Jaswant (2005) Ovulation-inducing factor in the seminal plasma of alpacas and llamas. Biology of Reproduction, 73, 452-457.

Adams, G. P., M. H. Ratto, M. E. Silva & R. A. Carrasco (2016) Ovulation-inducing factor (OIF/NGF) in seminal plasma: a review and update. Reproduction in Domestic Animals, 51, 4-17.

Agüero, A., M. G. Chaves, E. F. Capdevielle, A. F. Russo & M. A. Aba (2001) Superovulation in llamas: comparison of two treatments. InVet - Investigación Veterinaria, 3, 13-18.

Alberio, R. H. & J. F. Aller (1996) Control and synchronisation of the follicular cycle mediated by the exogenous influence of progesterone in llamas. Revista Argentina de Producción Animal, 16, 325-329.

Aller, J. F., M. C. Abalos, F. Acuña, R. Virgili, F. Requena & A. K. Cancino (2015) Birth of live llama (Lama glama) derived from embryo transfer storage at 5°C for 24 h. Small Ruminant Research, 132, 99-102.

Aller, J. F., M. C. Abalos, F. A. Acuña, R. Virgili, F. Requena & A. K. Cancino (2015) Embryo yield in llamas synchronized with two different intravaginal progesterone-releasing devices and superovulated with eCG. Spanish Journal of Agricultural Research, 13, e04SC01.

Aller, J. F., A. K. Cancino, G. E. Rebuffi & R. H. Alberio (2010) Effect of estradiol benzoate used at the start of a progestagen treatment on superovulatory response and embryo yield in lactating and non-lactating llamas. Animal Reproduction Science, 119, 322-328.

Aller, J. F., G. E. Rebuffi, A. K. Cancino & R. H. Alberio (2002) Successful transfer of vitrified llama (Lama glama) embryos. Animal Reproduction Science, 73, 121-127.

Anderson, D. E. 2013. Comments regarding female genital anatomy. 239-241. Chichester: John Wiley & Sons.

---. 2013. Pregnancy diagnosis. 243-248. Chichester: John Wiley & Sons.

Apichela, S., M. A. Jiménez-Díaz, M. Roldan-Olarte, J. N. Valz-Gianinet & D. C. Miceli (2009) In vivo and in vitro sperm interaction with oviductal epithelial cells of llama. Reproduction in Domestic Animals, 44, 943-951.

Apichela, S. A. (2011) Sperm reservoir in the llama oviduct and advances in the study of the proteolytic systems involved. Archivos Latinoamericanos de Producción Animal, 19, 55-57.

Bianchi, C. P., A. Meikle, M. A. Alvarez, M. A. Benavente, M. V. Cavilla, E. Rodríguez & M. A. Aba (2013) Oestrogen, progesterone and oxytocin receptors and COX-2 expression in endometrial biopsy samples from the induction of ovulation to luteolysis in llamas (Lama glama). Reproduction in Domestic Animals, 48, 681-690.

Bianchi, C. P., A. Meikle, M. A. Benavente, M. A. Álvarez, V. L. Trasorras, M. H. Miragaya, E. Rodríguez & M. A. Aba (2015) Oestrogen and progesterone receptors and COX-2 expression in endometrial biopsy samples during maternal recognition of pregnancy in llamas (Lama glama). Reproduction in Domestic Animals, 50, 980-988.

Bianchi, C. P., A. Meikle, I. Sartore, F. González & M. A. Aba (2007) Uterine estrogen receptor alpha and progesterone receptor during the follicular and luteal phase in llamas. Animal Reproduction Science, 99, 117-126.

Bourke, D. A., C. L. Adam & C. E. Kyle (1992) Ultrasonography as an aid to controlled breeding in the llama (Lama glama). Veterinary Record, 130, 424-428.

Bourke, D. A., C. L. Adam, C. E. Kyle, P. Young & T. G. McEvoy. 1992. Superovulation and embryo transfer in the llama. 183-185. Newmarket: R & W Publications.

Bourke, D. A., C. E. Kyle, T. G. McEvoy, P. Young & C. L. Adam (1995) Superovulatory responses to eCG in llamas (Lama glama). Theriogenology, 44, 255-268.

Bravo, P. W., M. E. Fowler & B. L. Lasley (1994) The postpartum llama: fertility after parturition. Biology of Reproduction, 51, 1084-1087.

Bravo, P. W., M. E. Fowler, G. H. Stabenfeldt & B. Lasley (1990) Endocrine responses in the llama to copulation. Theriogenology, 33, 891-899.

Bravo, P. W., G. H. Stabenfeldt, M. E. Fowler & B. L. Lasley (1992) Pituitary response to repeated copulation and/or gonadotropin-releasing hormone administration in llamas and alpacas. Biology of Reproduction, 47, 884-888.

Bravo, P. W., T. Tsutsui & B. L. Lasley (1995) Dose response to equine chorionic gonadotropin and subsequent ovulation in llamas. Small Ruminant Research, 18, 157-163.

Campbell, A. J., L. K. Pearson, T. E. Spencer & A. Tibary (2015) Double ovulation and occurrence of twinning in alpacas (Vicugna pacos). Theriogenology, 84, 421-4.

Campbell, A. J. & A. Tibary (2017) Infertility of female and male camelids. Clinical Theriogenology, 9, 311-319.

Cancino, A. K., J. F. Aller, G. Rebuffi & R. H. Alberio (2011) Control of ovarian follicular dynamics in early postpartum llama (Lama glama). Archivos de Zootecnia, 60, 1009-1020.

Carnero S, S., W. Huanca L, A. Cordero R, M. Vásquez E & T. Huanca M (2011) Embryo transfer ipsilateral and contralateral to the position of the corpus luteum and embryo survival in Llamas. Revista de Investigaciones Veterinarias del Perú (RIVEP), 22, 114-120.

Carrasco, R. A., J. Singh & G. P. Adams (2018) Distribution and morphology of gonadotropin-releasing hormone neurons in the hypothalamus of an induced ovulator - The llama (Lama glama). Gen Comp Endocrinol, 263, 43-50.

--- (2018) The relationship between gonadotropin releasing hormone and ovulation inducing factor/nerve growth factor receptors in the hypothalamus of the llama. Reprod Biol Endocrinol, 16, 83.

Carretero, M. I., M. Miragaya, M. G. Chaves, M. Gambarotta & A. Agüero (2010) Embryo production in superstimulated llamas pre-treated to inhibit follicular growth. Small Ruminant Research, 88, 32-37.

Cavilla, M. V., C. P. Bianchi & M. A. Aba (2010) Oestradiol-17β plasma concentrations after intramuscular injection of oestradiol benzoate or oestradiol cypionate in llamas (Lama glama). Acta Veterinaria Scandinavica, 52, (11 February 2010).

Correa, J. E., M. H. Ratto & R. Gatica (1997) Superovulation in llamas (Lama glama) with pFSH and equine chorionic gonadotrophin used individually or in combination. Animal Reproduction Science, 46, 289-296.

Correa, J. E., M. H. Ratto, R. Ladrix & R. Gatica (1992) Pregnancy in a llama following embryo transfer. Archivos de Medicina Veterinaria, 24, 113-115.

Correa, J. E., M. V. Ratto & R. Gatica (1994) Oestrous activity and ovarian response in llamas and alpacas treated with progesterone and gonadotropins. Archivos de Medicina Veterinaria, 26, 59-64.

Cotton, T. 2008. Infertility in male and female llamas. 294. Gainesville: The North American Veterinary Conference.

England, B. G. 1967. Ovulation, corpus luteum function and estrous behavior in the llama.

Evangelista V, S., A. Cordero R, A. Santiani A, M. Vásquez E, O. Cárdenas M & W. Huanca L (2009) Equine chorionic gonadotrophin (ECG) stimulation during the luteal and non-luteal phases on ovarian response and embryo quality in llamas. Revista de Investigaciones Veterinarias del Perú (RIVEP), 20, 33-40.

Fernández, A., C. Ulloa-Leal, M. Silva, C. Norambuena, G. P. Adams, M. Guerra & M. H. Ratto (2014) The effect of repeated administrations of llama ovulation-inducing factor (OIF/NGF) during the peri-ovulatory period on corpus luteum development and function in llamas. Animal Reproduction Science, 149, 345-352.

Gatica G, R., M. Ratto F, C. Schüler C, M. Ortíz L, J. Oltra C & J. Correa S (1994) Successful pregnancy obtained by embryo transfer to a llama. Agricultura Técnica (Santiago), 54, 68-71.

Giudicelli, E. (2017) Lamas. Bulletin des G.T.V., 53-64.

Huanca, W. (2013) The challenges in reproductive management of South American camelids. Archivos Latinoamericanos de Producción Animal, 21, 233-236.

Huanca, W., A. Cordero, T. Huanca, O. Cardenas, G. P. Adams & M. H. Ratto (2009) Ovarian response and embryo production in llamas treated with equine chorionic gonadotropin alone or with a progestin-releasing vaginal sponge at the time of follicular wave emergence. Theriogenology, 72, 803-808.

Mamani C, R., T. Huanca M, J. Pacheco C, R. Zapana V & N. Condori R (2013) Ovulation rate using gonadotropin releasing hormone and seminal plasma in alpacas and llamas. Revista de Investigaciones Veterinarias del Perú (RIVEP), 24, 194-198.

Norambuena, M. C., M. Silva, F. Urra, C. Ulloa-Leal, A. Fernández, G. P. Adams, W. Huanca & M. H. Ratto (2013) Effects of nutritional restriction on metabolic, endocrine, and ovarian function in llamas (Lama glama). Animal Reproduction Science, 138, 252-260.

Pacheco, J., V. Vélez & D. Pezo (2016) Evaluation of the efficiency of interspecies embryo transfer between alpacas and llamas obtained through single ovulation. Revista de Investigaciones Veterinarias del Perú (RIVEP), 27, 64-69.

Pikó, E., V. Faigl, M. Kulcsár & P. Nagy (2014) Induced ovulation in Camelids: the role of beta-nerve growth factor. Literature review. Magyar Állatorvosok Lapja, 136, 432-440.

Ratto, M., W. Huanca, S. Jaswant & G. P. Adams (2006) Comparison of the effect of natural mating, LH, and GnRH on interval to ovulation and luteal function in llamas. Animal Reproduction Science, 91, 299-306.

Ratto, M. H. 2006. Ovarian follicular synchronization, ovulation and oocyte development in llamas and alpacas. Ottawa: Library and Archives Canada = Bibliothèque et Archives Canada.

Ratto, M. H., R. Gatica & J. E. Correa (1997) Timing of mating and ovarian response in llamas (Lama glama) treated with pFSH. Animal Reproduction Science, 48, 325-330.

Ratto, M. H., W. Huanca, S. Jaswant & G. P. Adams (2006) Comparison of the effect of ovulation-inducing factor (OIF) in the seminal plasma of llamas, alpacas, and bulls. Theriogenology, 66, 1102-1106.

Ratto, M. H., M. E. Silva, W. Huanca, T. Huanca & G. P. Adams (2013) Induction of superovulation in South American camelids. Animal Reproduction Science, 136, 164-169.

Ratto, M. H., J. Singh, W. Huanca & G. P. Adams (2003) Ovarian follicular wave synchronization and pregnancy rate after fixed-time natural mating in llamas. Theriogenology, 60, 1645-1656.

Ratto, M. H., C. Ulloa-Leal, M. Silva, A. Fernandez & X. P. Valderrama (2016) Luteotrophic effect of OIF/NGF in llamas. Archivos Latinoamericanos de Producción Animal, 24, 101-106.

Riveros, J. L., G. Schuler, C. Bonacic, B. Hoffmann, M. G. Chaves & B. Urquieta (2010) Ovarian follicular dynamics and hormonal secretory profiles in guanacos (Lama guanicoe). Animal Reproduction Science, 119, 63-67.

Silva, M., A. Fernández, C. Ulloa-Leal, G. P. Adams, M. A. Berland & M. H. Ratto (2015) LH release and ovulatory response after intramuscular, intravenous, and intrauterine administration of β-nerve growth factor of seminal plasma origin in female llamas. Theriogenology, 84, 1096-102.

Silva, M., A. Fernández, C. Ulloa-Leal, G. P. Adams, M. A. Berland & M. H. Ratto (2015) LH release and ovulatory response after intramuscular, intravenous, and intrauterine administration of β-nerve growth factor of seminal plasma origin in female llamas. Theriogenology, 84, 1096-1102.

Silva, M., C. Ulloa-Leal, C. Norambuena, A. Fernández, G. P. Adams & M. H. Ratto (2014) Ovulation-inducing factor (OIF/NGF) from seminal plasma origin enhances Corpus Luteum function in llamas regardless the preovulatory follicle diameter. Animal Reproduction Science, 148, 221-227.

Silva, M., C. Ulloa-Leal, X. P. Valderrama, O. A. Bogle, G. P. Adams & M. H. Ratto (2017) Nerve growth factor from seminal plasma origin (spβ-NGF) increases CL vascularization and level of mRNA expression of steroidogenic enzymes during the early stage of Corpus Luteum development in llamas. Theriogenology, 103, 69-75.

Silva, M., F. Urra, C. Ulloa-Leal & M. H. Ratto (2017) A comparative study of the effects of intramuscular administration of gonadorelin, mating and intrauterine infusion of either raw seminal plasma or seminal plasma purified β-NGF on luteal development in llamas. Reproduction in Domestic Animals, 52, 625-631.

Silva, M. E., M. G. Colazo & M. H. Ratto (2012) GnRH dose reduction decreases pituitary LH release and ovulatory response but does not affect corpus luteum (CL) development and function in llamas. Theriogenology, 77, 1802-1810.

Silva, M. E., M. P. Recabarren, S. E. Recabarren, G. P. Adams & M. H. Ratto (2012) Ovarian estradiol modulates the stimulatory effect of ovulation-inducing factor (OIF) on pituitary LH secretion in llamas. Theriogenology, 77, 1873-1882.

Sumar, J. (1994) Effects of various ovulation induction stimuli in alpacas and llamas. Journal of Arid Environments, 26, 39-45.

Sumar, J., G. Fredriksson, V. Alarcón, H. Kindahl & L. E. Edqvist (1988) Levels of 15-keto-13,14-dihydro-PGF2α, progesterone and oestradiol-17β after induced ovulation in llamas and alpacas. Acta Veterinaria Scandinavica, 29, 339-346.

Trasorras, V., M. G. Chaves, D. Neild, M. Gambarotta, M. Aba & A. Agüero (2010) Embryo transfer technique: factors affecting the viability of the corpus luteum in llamas. Animal Reproduction Science, 121, 279-285.

Tribulo, P., O. Bogle, R. J. Mapletoft & G. P. Adams (2015) Bioactivity of ovulation inducing factor (or nerve growth factor) in bovine seminal plasma and its effects on ovarian function in cattle. Theriogenology, 83, 1394-401.

Ulloa-Leal, C., O. A. Bogle, G. P. Adams & M. H. Ratto (2014) Luteotrophic effect of ovulation-inducing factor/nerve growth factor present in the seminal plasma of llamas. Theriogenology, 81, 1101-1107.

Vaughan, J. (2011) Ovarian function in South American camelids (alpacas, llamas, vicunas, guanacos). Animal Reproduction Science, 124, 237-243.

Vaughan, J. L. & A. Tibary (2006) Reproduction in female South American camelids: a review and clinical observations. Small Ruminant Research, 61, 259-281.

Last updated: 13.01.2020

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