2020. L Sandoval, M Silva, J Risopatrón, E Figueroa, E Cabrita, I Valdevenito. Oxidative stress and use of antioxidants in fish semen cryopreservation. Rewiews in Aquaculture 1:23. Publicado. ISSN: 1753-5131

2020. X Valderrama, C. Ulloa-Leal, M Silva, J Goicochea, S. Apichela, M Argañaraz, L Sari, L Paiva, V Ratto, MH Ratto. B-NGF stimulates steroidogenic enzyme and VEGFA gene expression, and progesterone secretion via ERK ½ pathway in primary culture of llama granulosa cells. Frontiers in veterinary medicine/animal Reproduction-Theriogenology 7:586265. Publicado. ISSN: 22971769

2020. M Ratto, F. Urra, M. Silva. Laterality of ovulation and presence of the embryo do not affect uterine horn blood flow during the first month of gestation in llamas. Frontiers in veterinary medicine/animal.  Reproduction-Theriogenology 7:598117. Publicado. ISSN: 22971769

2020. Mauricio Silva, Luis Paiva, Marcelo Ratto. Ovulation mechanism in South American camelids: the active role of B-NGF as the chemical signal eliciting ovulation in llamas and alpacas. Theriogenology 150:280-287. Publicado. 0093-691X

2020. Contreras MJ, Treulén F, Arias ME, Silva M, Fuentes F, Cabrera P, Felmer R. Cryopreservation of stallion semen: effect of adding antioxidants to the freezing medium on sperm physiology         Reproduction in Domestic Animals 55:229-239. Publicado. ISSN: 0936-6768

2019. Y Gómez, JG Vargas, W. Rondón, F. Acosta, M. Montalvo, Marce Pérez, Carlos Ballarte, M. Silva, M. Ratto. Tratamientos hormonales aplicados posterior a la IATF sobre la tasa de preñez y la viabilidad embrionaria en vacas de alta producción en estrés térmico. Revista de Investigaciones Veterinarias del Perú 4:1653-1661.

2019. Ratto MH, Berland M, Silva M, Adams GP. New insights of the role of B-NGF in the ovulation mechanism of induced ovulating species  Reproduction 157:R199-R207. Publicado. ISSN: 1470-1626

2019. Urra F., M. H. Ratto, M. Silva. Evaluation of the effect of mating, intrauterine deposition of raw semnal plasma or seminal plasma purified B-NGF on endometrial vascularization in llamas          Theriogenology 125: 18-23. Publicado. ISSN:0093-691X

2018. C. Arroyo-Salvo, F. Sanhueza, F. Fuentes, F. Treulén, M. E. Arias, P. Cabrera, M. Silva, R. Felmer. Effect of human tubal fluid medium and hyperactivation inducers on stallion sperm capacitation and hyperactivation. Reproduction in Domestic Animals 1:1-11, Publicado. ISSN: 0936-6768

2018. M. Silva, F. Urra, M. H. Ratto. Uterine endometrial vascularization during ovarian follicular growth in llamas: The effect of estradiol plasma concentration Theriogenology 106: 164-169. Publicado    ISSN: 0093-691X

2017. M. Silva, C. Ulloa-Leal, X.P. Valderrama, O. A. Bogle, G. P. Adams, M. H. Ratto. Nerve growth factor from seminal plasma origin (spβ-NGF) increases angiogenesis and levels of mRNA expression of steroidogenic enzymes during the early stage of Corpus Luteum development in llamas Theriogenology 103: 69-75. Publicado. ISSN: 0093-691X

2017. Silva, M., Urra, F., Ulloa-Leal, C., & Ratto, M. H. A comparative study of the effects of intramuscular administration of gonadorelin, mating and intrauterine infusion of either raw seminal plasma or seminal plasma purified-NGF on luteal development in llamas Reproduction in Domestic Animals. 52(4), 625-631. Publicado. ISSN: 0936-6768

2017. Ruiz, J., Santayana, R. P., Mendoza, M. J., Landeo, J. L., Huamán, E., Ticllacuri, F., … & Ratto, M. H. Effect of oocyte maturation time, sperm selection method and oxygen tension on in vitro embryo development in alpacas. Theriogenology. 95, 127-132. Publicado. ISSN: 0093-691X

2017.  Norambuena, M. C., Hernández, F., Maureira, J., Rubilar, C., Alfaro, J., Silva, G., … & Ulloa-Leal, C. Effects of leptin administration on development, vascularization and function of Corpus luteum in alpacas submitted to pre-ovulatory fasting Animal Reproduction Science. 182, 28-34. Publicado. ISSN: 0378-4320

2017. Silva, M., Ulloa-Leal, C., Valderrama, X. P., Bogle, O. A., Adams, G. P., & Ratto, M. H. Nerve growth factor from seminal plasma origin (spβ-NGF) increases angiogenesis and levels of mRNA expression of steroidogenic enzymes during the early stage of Corpus Luteum development in llamas. Theriogenology. 103, 69-75. Publicado. ISSN: 0093-691X

2016. Berland, M. A., Ulloa-Leal, C., Barría, M., Wright, H., Dissen, G. A., Silva, M. E., … & Ratto, M. H. Seminal plasma induces ovulation in llamas in the absence of a copulatory stimulus: role of nerve growth factor as an ovulation-inducing factor  Endocrinology. 157(8), 3224-3232. Publicado. ISSN: 0093-691X

2016. Silva, M. & Calderon, N. Vitrification of partially matured bovine oocytes of the Chilean Red Friesian breed. International Journal of Morphology. 34(3), 836-841. Publicado. ISSN: 0717-9502

2016. Adams, G. P., Ratto, M. H., Silva, M. E., & Carrasco, R. A. Ovulation-inducing factor (OIF/NGF) in seminal plasma: A review and update. Reproduction in Domestic Animals. 51(S2), 4-17. Publicado ISSN: 0936-6768

2015. Silva, M., Fernández, A., Ulloa-Leal, C., Adams, G. P., Berland, M. A., & Ratto, M. H. 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(7), 1096-1102. Publicado. ISSN: 0093-691X

2015. Ruiz, J., Landeo, L., Mendoza, J., Correa, J., Silva, M., & Ratto, M. H. In vitro developmental competence of alpaca (Vicugna pacos) and llama (Lama glama) oocytes after parthenogenetic activation. Small Ruminant Research. 133, 148-152. Publicado. ISSN: 0921-4488

2014. Silva, M., Ulloa-Leal, C., Norambuena, C., Fernández, A., Adams, G. P., & Ratto, M. H. Ovulation-inducing factor (OIF/NGF) from seminal plasma origin enhances Corpus luteum function in llamas  Animal Reproduction Science. 148(3), 221-227. Publicado. ISSN: 0378-4320

2014. Fernández, A., Ulloa-Leal, C., Silva, M., Norambuena, C., Adams, G. P., Guerra, M., & Ratto, M. H. 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(3), 345-352. Publicado. ISSN: 0378-4320

2013. Ratto, M. H., Silva, M. E., Huanca, W., Huanca, T., & Adams, G. P. Induction of superovulation in South American Camelids  Animal Reproduction Science. 136(3), 164-169. Publicado. ISSN: 0378-4320

2013. Norambuena, M. C., Silva, M., Urra, F., Ulloa-Leal, C., Fernández, A., Adams, G. P., … & Ratto, M. H. Effects of nutritional restriction on metabolic, endocrine, and ovarian function in llamas (Lama glama). Animal Reproduction Science. 138(3), 252-260. Publicado. ISSN: 0378-4320

2013. Ruiz, J., Landeo, L., Mendoza, J., Artica, M., Correa, J. E., Silva, M., … & Ratto, M. H. Vitrification of in vitro mature alpaca oocyte: effect of ethylene glycol concentration and time of exposure in the equilibration and vitrification solutions. Animal Reproduction Science. 143(1), 72-78. Publicado. ISSN: 0378-4320

2013. Felmer, R., Arias, M. E., Muñoz, G., Rio, J., Silva, M., Berland, M., … & Deloannes, A. Changes in the expression pattern of developmentally important genes and posible relation to the low in vitro and in vivo developmental potential of transgenic nuclear transfer embryos Animal Reproduction. 10, 647-656.  Publicado.

2012. Silva, M. E., Recabarren, M. P., Recabarren, S. E., Adams, G. P., & Ratto, M. H. Ovarian estradiol modulates the stimulatory effect of ovulation-inducing factor (OIF) on pituitary LH secretion in llamas. Theriogenology. 77(9), 1873-1882. Publicado.

2012. Silva, M. E., Colazo, M. G., & Ratto, M. H. GnRH dose reduction decreases pituitary LH release and ovulatory response but does not affect corpus luteum (CL) development in llamas  Theriogenology. 77(9), 1802-1810.  Publicado.

2011. Silva, M. E., Smulders, J. P., Guerra, M., Valderrama, X. P., Letelier, C., Adams, G. P., & Ratto, M. H. Cetrorelix suppress preovulatory LH surge and ovulation induced by ovulation-inducing factor (OIF) present in llama seminal plasma Reproductive Biology and Endocrinology. 9(1), 74 Publicado

2011. Silva, M., Nino, A., Guerra, M., Letelier, C., Valderrama, X. P., Adams, G. P., & Ratto, M. H. Is an ovulation-inducing factor (OIF) present in the seminal plasma of rabbits? Animal Reproduction Science. 127, 213-221

2011. Ratto, M., Cervantes, M., Norambuena, C., Silva, M., Miragaya, M., & Huanca, W. Effect of location and stage of development of dominant follicle on ovulation and embryo survival rate in alpacas         Animal Reproduction Science. 127(1), 100-105. Publicado ISSN: 0378-4320

2017-2018. Análisis comparativo de factores de desarrollo folicular temprano en ovejas adultas de alta y baja prolificidad. Proyecto de Investigación Científica DID-UFRO. Co-investigador.

2016-2019. Capacitation of stallion sperm: Effects on the in vitro production of embryos generated by conventional in vitro fertilization (IVF) and intracytoplasmic sperm. Proyecto Fondecyt Regular. Co-investigador.

2016-2018. Unveiling the luteotrophic effect of the ovulation inducing factor “Nerve Growth Factor” present in the seminal plasma of llamas. Proyecto Fondecyt Regular. Co-investigador.

2014-2017. Uterine blood flow in llamas: the effect of vascular asymmetry, intrauterine semen deposition or embryo location, and their possible influence on the establishment of gestation. Proyecto FONDECYT de Iniciación. Investigador Responsable.

2013-2014. Caracterización funcional del Factor Inductor de Ovulación (OIF) presente en el plasma seminal de las llamas: su efecto luteotrófico y el efecto modulador de progesterona sobre su acción. Pro Fondecyt, Dirección General de Imvestigación y Postgrado, Universidad Católica de Temuco. Director principal.

2013. Red de colaboración para el desarrollo del sector carne bovina. Proyecto CONICYT Redes de Colaboración Científica Internacional. Investigador.

C. Arroyo-Salvo, F. Sanhueza, F. Fuentes, F. Treulén, M.E. Arias, P. Cabrera, M. Silva, R. Felmer. 2018. Effect of human tubal fluid medium and hyperactivation inducers on stallion sperm capacitation and hyperactivation. Reproduction in Domestic Animals 1:1-11. ISNN 0936-6768.

Urra F., M.H. Ratto, M. Silva. 2018. Evaluation of the effect of mating, intrauterine deposition of raw semnal plasma or seminal plasma purified B-NGF on endometrial vascularization in llamas. Theriogenology 125: 18-23. ISSN 0093-691X.

M. Silva, F. Urra, MH Ratto. 2018. Uterine endometrial vascularization during ovarian follicular growth in llamas: The effect of estradiol plasma concentration. Theriogenology 106: 164-169. ISNN 0093-691X.

M. Silva, 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 angiogenesis and levels of mRNA expression of steroidogenic enzymes during the early stage of Corpus Luteum development in llamas. Theriogenology 103: 69-75. ISNN 0093-691X.

Silva, M., Urra, F., Ulloa-Leal, C., & Ratto, M.H. 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-NGF on luteal development in llamas. Reproduction in Domestic Animals. 52(4), 625-631. ISSN 0936-6768.

Ruiz, J., Santayana, R. P., Mendoza, M. J., Landeo, J. L., Huamán, E., Ticllacuri, F., … & Ratto, M. H. 2017. Effect of oocyte maturation time, sperm selection method and oxygen tension on in vitro embryo development in alpacas. Theriogenology. 95, 127-132. ISNN 0093-691X.

Norambuena, M. C., Hernández, F., Maureira, J., Rubilar, C., Alfaro, J., Silva, G., … & Ulloa-Leal, C. 2017. Effects of leptin administration on development, vascularization and function of Corpus luteum in alpacas submitted to pre-ovulatory fasting. Animal Reproduction Science. 182, 28-34. ISNN 0378-4320.

Silva, M., Ulloa-Leal, C., Valderrama, X. P., Bogle, O. A., Adams, G. P., & Ratto, M. H. 2017. Nerve growth factor from seminal plasma origin (spβ-NGF) increases angiogenesis and levels of mRNA expression of steroidogenic enzymes during the early stage of Corpus Luteum development in llamas. Theriogenology. 103, 69-75. ISNN 0093-691X.

Marco Berland, Cesar Ulloa-Leal, Miguel Barria, Hollis Wright, Gregory Dissen, Mauricio Silva, Sergio Ojeda, Marcelo Ratto, 2016, Seminal plasma induces ovulation in llamas in the absence of a copulatory stimulus: role of nerve growth factor as an ovulation-inducing factor, Endocrinology, 157: 3224-3232, ISSN: 0013-7227.

Mauricio Silva y  Nelda Calderón, 2016, Vitrification of partially matured bovine oocytes of the Chilean Red Friesian breed, International Journal of Morphology, ISNN: 0717-9502.

Gregg Adams, Marcelo Ratto, Mauricio Silva, Rodrigo Carrasco, 2016, Ovulation-inducing factor (OIF/NGF) in seminal plasma: A review and update, Alemania, Reproduction in Domestic Animals, ISSN: 0936-6768.

Silva, A. Fernández, C. Ulloa-Leal, G.P. Adams, M. 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, USA, Theriogenology, 84: 1096-1102, ISSN: 0093-691X.

Jaime Ruiz, Leandra Landeo, José Mendoza, Jorge Correa, Mauricio Silva, Marcelo H Ratto,  2015, In vitro developmental competence of alpaca (Vicugna pacos) and llama (Lama glama) oocytes after parthenogenetic activation, Holanda, Small Ruminant Research, 133: 148-152, ISSN: 0921-4488.

M Silva, C Ulloa-Leal, C Norambuena, A Fernández, GP Adams, MH Ratto, 2014, Ovulation-inducing factor (OIF/NGF) from seminal plasma origin enhances Corpus luteum function in llamas, Holanda, Animal Reproduction Science, 148: 221-227, ISSN: 0378-4320.

Fernández, 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, Holanda, Animal Reproduction Science, 149: 345-352, ISSN: 0093691X.

Marcelo H Ratto, Mauricio E Silva, Wilfredo Huanca, Teodosio Huanca, Gregg P Adams, 2013, Induction of superovulation in South American Camelids, Animal Reproduction Science, 136:164-169, ISSN: 0378-4320.

M.C. Norambuena, 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,  ISSN: 03784320.

J. Ruiz, L. Landeo, J. Mendoza, M. Artica, J. Correa, M. Silva, M. Miragaya y MH Ratto, 2013, Vitrification of mature alpaca oocytes: Effect of Ethylene glycol concentration and time of exposure in the equilibration and vitrification solution,  Animal Reproduction Science, 143:72-78, ISSN: 0378-4320.

R Felmer, ME Arias, G Muñoz, J Rio, M Silva, M Berland, R Valdivia, M Kato, MI Becker, A DeIoannes, 2013, Changes in the expression pattern of developmentally important genes and posible relation to the low in vitro and in vivo developmental potential of transgenic nuclear transfer embryos, Animal Reproduction, 10: 647-656,  ISNN: 1806-9614.

Silva, 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. ISSN: 0093-691X.

M.E. Silva, 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 in llamas, Theriogenology, 77:1802-1810, ISSN: 0093691X.

Mauricio E Silva, Juan P Smulders, Monserrat Guerra, Ximena P Valderrama, Claudia Letelier, Gregg P. Adams, Marcelo H Ratto, 2011, Cetrorelix suppress preovulatory LH surge and ovulation induced by ovulation-inducing factor (OIF) present in llama seminal plasma, Reproductive Biology and Endocrinology, 9, 74, ISSN: 1477-7827.

Silva, A. Niño, M. Guerra, C. Letelier, P. X. Valderrama, G.P Adams, M.H. Ratto, 2011, Is an ovulation-inducing factor (OIF) present in the seminal plasma of rabbits?, Animal Reproduction Science, 127:213-221, ISSN: 0378-4320.

Marcelo Ratto, Miriam Cervantes, Cecilia Norambuena, Mauricio Silva, Marcelo Miragaya, Wilfredo Huanca, 2011, Effect of location and stage of development of dominant follicle on ovulation and embryo survival rate in alpacas, Animal Reproduction Science, 127:100-105, ISSN: 0378-4320.