Male Dog Reproduction

Testosterone in male dogs:Is secreted by the testicles, it is responsible for the appearance of secondary sexual characters, in other words, the physical aspect of the male.

The abnormal dog sexual cycles: The first cycles can be irregular, but then they should separate from 5 to 8 months regularly. The abnormal cycles can cause sterility in a female.

  • Heat that lasts too long: the duration is superior to 12 days. The ovulation is very late.
  • Heats that are too frequent: we are talking about the hyperestro when the interval between 2 cycles is less than 4 months.
  • Heats that are too separate: we are talking about the hypoestro when the interval between 2 cycles is superior to 12 months.
  • Inexistent heat: this can be because of the lack of development of the female's sexual organs or the lack of hormonal secretion.

All these anomalies should be studied by the veterinarian, who might consider the necessity of a hormonal treatment.

Contraception in dogs: It is not indispensable for a female dog to have descendants, even though the professional opinions may vary. If heat, two times a year is a feared phenomenon for you, you can choose to use a method of contraception. This is indispensable if we raise a female and male together and we don't want them to have puppies. There are hormonal and surgical methods for both male and female dogs.

Hormonal Methods: The hormonal methods have the advantage of not being definite. They consist in injecting the dog with hormones every 5 to 6 months, after the dog has had its first heat. The risk of this method is a long term uterine infection. Therefore it is not recommended to use this method in each cycle.

Surgical methods: Surgery is definite, but it takes away the risk of a uterine infection. The inconvenience with these is that the dog gains weight and the risk of urinary inconsistence when the female dog gets old. This phenomenon is not general after each intervention, but it is not insignificant either. It is precise to have it in mind in the case that we want to proceed with this method. The ovaryectomy consists in the extirpation of the ovaries; the hysterectomy is the extirpation of the uterus and the ovaryhisterectomy is the extirpation of both. Eliminating only the uterus will prevent the risk of gestation, preventing obesity and other problems since the ovaries will still produce hormones. We have to be careful because the males will still be attracted to the female during the periods of heat. There is another method to prevent reproduction, which is very rare: the tying of the fallopian tubes. This guarantees definite contraception but it does not prevent the risks of a uterine infection. The male can be castrated or get a vasectomy. This consists in the obstruction of the conducts that carry the semen. Sterilization is effective three weeks after the intervention. Dogs are usually castrated when their aggressiveness recommends it, which also limits its chance to reproduce. The castration of a dog is also indicated in the case of a prostate disease or a perineal hernia. The sterilization of the male or the female is still the only method that guarantees the total control of the dog's reproduction if we have two dogs of different sex at home. We can also prevent the transfer of genetic material.

The Mounting of dogs: It is difficult to detect the ideal period, for both the dogs and the owners. It will be important to know this if we want to use a stallion, by buying its semen.

The ideal time for dog mating: Ovulation begins on the eleventh day and lasts until day 15. This is when reproduction should take place. The ideal thing is to make 2 or 3 mountings at regular intervals during this time.

Vaginal rubbing: The modification of the vaginal cells in studied in function of the periods in the cycle.

The dose of progesterone: The female secretes this hormone just before ovulation. The detection of it in her blood will allow us to know that ovulation is very close. There is a threshold of progesterone that tells us when the dog is ovulating. When this threshold is surpassed it means that the dog must be mounted in 48 hours. Choosing a Dog Breeder

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