• Factors that affect to frozen semen quality

    There are many factors that can affect the final quality of frozen semen. The age of the male at the time of the seminal freezing is one of the most important so it is recommended to choose males between 2 and 6 years, based primarily on animal genetic and reproductive potential.

    The general health of the male is also very important, the presence of temperature peaks, vaccinations or stress situations might cause poor semen quality at the time of collection.

    Many males require the presence of a female in heat to ejaculate and some studies suggest that the presence of a female in heat will increase the quality of seminal ejaculation by boosting the male libido.

    We should note that a male that has never been used for breeding or that has not been used for a long period of time will require several pickups, at least two weeks, before freezing.

  • Insemination with frozen semen

    El procedimiento de la inseminación transcervical se realiza sin anestesia y la mayoría de las hembras en celo lo toleran incluso sin sedación.

    Además de tener en cuenta la forma de inseminación no debemos olvidar que la variable más crítica será el momento de la inseminación ya que el semen descongelado se mantiene vivo tan solo unas 12-24 horas en el aparato reproductivo de la hembra. La determinación del momento óptimo se puede realizar mediante medición de los niveles de progesterona en sangre o realizando un seguimiento ecográfico de la ovulación.

    There are sucessful cases with vaginal insemination with frozen semen, the two key conditions to achieve sucess is to inseminate several days and a greater amount of frozen semen than if using the postcervical technique.

    Las inseminaciones a nivel uterino dan lugar a un mayor índice de éxito y camadas de mayor número. este tipo de inseminación se puede realizar mediante laparoscopia a través de dos pequeñas incisiones que permiten inyectar la dosis seminal en los cuernos uterinos o mediante inseminación transcervical realizada utilizando un endoscopio que posee una cámara la cual facilita la introducción de un catéter a través del cuello del útero.

    Inseminations with frozen semen deposited in the uterus result in a higher success rate. This type of insemination can be performed laparoscopically through two small incisions allowing the seminal dose injecting the uterine horns or transcervical insemination performed by using an endoscope having a chamber which facilitates the insertion of a catheter through the neck uterus.

    The method of transcervical insemination is performed without anesthesia and most estrous females tolerate even without sedation.

    Besides taking into account the shape of insemination must not forget that the most critical variable is the time of insemination since thawed semen is kept alive only 12-24 hours in the female reproductive tract. Determining the optimal time can be performed by measuring the levels of progesterone in blood or performing ultrasound monitoring ovulation.