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The objectives of the study were to determine the effects of nutritional restriction on ovarian function in llamas. Mature female llamas were assigned randomly to a Control group, fed 100% of maintenance energy requirements (MER) (n = 8), or a Restricted group (n = 8) fed from 70% to 40% of MER u...


Norambuena, M. C.Silva Jiménez, MauricioUrra, F.Ulloa Leal, C.Fernandez, A.Adams, G. P.Huanca, W.Ratto, Marcelo[Effects of nutritional restriction on metabolic, endocrine, and ovarian function in llamas (Lama glama)]Effects of nutritional restriction on metabolic, endocrine, and ovarian function in llamas (Lama glama)

This study was designed to determine the effect of location of the preovulatory dominant follicle and stage of ovarian follicle development on ovulation rate and embryo survival in alpacas. In Experiment 1, mature lactating alpacas were randomly assigned to one of two groups according to the loca...


Ratto, MarceloCervantes, MiriamNorambuena Ardiles, MaríaSilva Jiménez, MauricioMiragaya, MarceloHuanca, Wilfredo[Effect of location and stage of development of dominant follicle on ovulation and embryo survival rate in alpacas]Effect of location and stage of development of dominant follicle on ovulation and embryo survival rate in alpacas

The objectives of the study were to determine the effect of seminal plasma beta-NGF on Corpus Luteum morphology and function and level of mRNA expression of steroidogenic enzymes. Llamas were assigned (n = 12/per group) to receive an intramuscular dose of: (a) 1 ml phosphate buffered saline (PBS)...


Silva Jiménez, MauricioUlloa Leal, C.Valderrama, X. P.Bogle, O. A.Adams, G. P.Ratto, Marcelo[Nerve growth factor from seminal plasma origin (sp beta-NGF) increases CL vascularization and level of mRNA expression of steroidogenic enzymes during the early stage of Corpus Luteum development in llamas]Nerve growth factor from seminal plasma origin (sp beta-NGF) increases CL vascularization and level of mRNA expression of steroidogenic enzymes during the early stage of Corpus Luteum development in llamas

This study was designed to: 1) characterize the effect of ovulation-inducing factor (OIF) on pituitary LH secretion in ovariectomized (OVX) llamas; and 2) determine the effect of OIF on LH secretion in OVX llamas pretreated with estradiol-17 beta (E-17 beta) or estradiol benzoate (EB). In Experim...


Silva Jiménez, MauricioRecabarren, M. P.Recabarren, S. E.Adams, G. P.Ratto, Marcelo[Ovarian estradiol modulates the stimulatory effect of ovulation-inducing factor (OIF) on pituitary LH secretion in llamas]Ovarian estradiol modulates the stimulatory effect of ovulation-inducing factor (OIF) on pituitary LH secretion in llamas

The objective of the study was to compare the ovulatory response and embryo production in llamas (Lama glama) treated with a single dose of equine chorionic gonadotropin (eCG) alone or combined with intravaginal medroxyprogesterone acetate (MPA) at the time of follicular wave emergence. Llamas wi...


Huanca, W.Cordero, A.Huanca, T.Cardenas, O.Adams, G. R.Ratto, Marcelo[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]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

The objective was to evaluate the developmental competence of cumulus-oocyte complexes (COC) collected by follicular aspiration in llamas treated with FSH or eCG. Llamas were assigned randomly to two groups (n = 16 per group) and treated, at the time of ovarian follicular wave emergence, with eit...


Berland Olea, Marcovon Baer, A.Ruiz, J.Parraguez, V. H.Morales, P.Adams, G. P.Ratto, Marcelo[In vitro fertilization and development of cumulus oocytes complexes collected by ultrasound-guided follicle aspiration in superstimulated llamas]In vitro fertilization and development of cumulus oocytes complexes collected by ultrasound-guided follicle aspiration in superstimulated llamas

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