SPERMOVA (Aug 2018)
Impact of ovulation induction in the application of artificial insemination and multiple ovulation and embryo transfer in camelids
Abstract
The South American camelids are considered species of induced ovulation, so that the release of the oocyte is produced a neuroendocrine interaction is necessary, which is the product of the stimulation during copulation; However, several studies have demonstrated the presence of a factor in the seminal plasma of the male that is determinant for the occurrence of ovulation in camelids, has a powerful luteotropic effect of this factor, which is evidenced by the increase and permanence of the circulating LH concentrations and the rapid change in the vascularization of the pre ovulatory follicle and the developing corpus luteum. In flames it was shown that the first significant increase in plasma LH levels occurs between 15 and 40 minutes after the start of intercourse, as a consequence of a neuroendocrine reflex. The neuronal stimuli that trigger this reflex involve the stimulation of the cervix during penetration, the sounds emitted by the male and the physical contact; however, the maximum LH peak occurs 2 to 3 hours after assembly, returning to basal levels after 7 to 12 hours of the same, ovulation occurs with similar frequency in both ovaries, if there is no stimulus Necessary from the mount will not ovulate and the dominant follicle will regress. Ovulation occurs if there is a dominant follicle of 7 mm or larger at the time of intercourse, but if the follicles are smaller than 6 mm or are in the regression phase, ovulation does not occur. In artificial insemination in semen-receiving females, seminal plasma, GnRH and vasectomized males have been used, results at the laboratory level reach 100% for seminal plasma followed by GnRH and vasectomized males, at the field level the percentage is lower, there is no significant difference to statistical analysis (P> 0.05). In embryo transfer in embryo donors and recipients, seminal plasma and GnRH are most frequently used, the results show that it can be used indistinctively as an ovulation inducer (P> 0.05).
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