Fertility and Breeding time

During oestrus, the female becomes sexually receptive to the male. This is typically preceded by a period of pro-oestrus and/or other clinical signs. What is the classic sign of oestrus in cows?

When does oestrus occur in most animals?

Which hormone drives oestrus by increasing oestradiol concentrations?

In which species does oestrus occur without being preceded by the luteal phase?

In cows and sows, how long does oestrus typically last?

In which species is the length of oestrus increased and often not linked to when she first showed signs of oestrus?

When does ovulation typically occur in cows and sows?

What is the main goal when timing mating in relation to oestrus?

When does oestrus occur in relation to the oestrous cycle?

What is the role of oestradiol in driving oestrus?

Which hormone is most commonly used for monitoring oestrus and ovulation in animals?

What hormone triggers the LH surge and subsequently ovulation?

Which hormone is the ideal hormone to measure for predicting optimal chances of pregnancy in humans?

What is the optimal time to mate the female animal?

What is the period when oocytes are available to be fertilized by sperm in most species?

What is the period when mating could result in pregnancy?

What is the main clinical tool for monitoring oestrus and ovulation in large animals?

What is the expected size of an antral follicle in a cow when monitoring oestrus and ovulation?

What is the expected size of a follicle in a mare when monitoring oestrus and ovulation?

What does the rise in progesterone in a dog indicate?

Which of the following is a key indicator that ovulation is imminent in mares?

What is the characteristic change in cervix and uterus under progesterone dominance in the mare?

What is the characteristic change in cervix and uterus under oestrogen dominance in the cow?

What is the characteristic change in cervix and uterus under progesterone dominance in the cow?

What is the characteristic change in vaginal cytology during late oestrus in dogs?

What is the purpose of pharmacologically controlling the time of ovulation in cows?

What is the hormone that directly induces ovulation in cows?

What is the commonly used method for controlling ovulation in cattle?

What type of cells are largely seen in vaginal cytology during prooestrus in dogs?

What is the characteristic change in follicular morphology as ovulation approaches?

What are the key indicators that ovulation is imminent in mares?

What are the characteristic changes in cervix and uterus under oestrogen dominance in the mare?

What are the characteristic changes in cervix and uterus under progesterone dominance in the mare?

What are the characteristic changes in cervix and uterus under oestrogen dominance in the cow?

What are the characteristic changes in cervix and uterus under progesterone dominance in the cow?

What are some considerations for the optimal time to mate male animals?

What is the importance of the pre-ovulatory follicle growth maturation period in female animals?

When can oocytes be fertilized in most species?

What are some clinical tools available for monitoring oestrus and ovulation?

What are some key indicators of ovulation in large animals?

Fertility and Breeding time: Oestrus is when the female becomes sexual receptive to the male. Can be preceded by a period of pro-oestrus and/or other clinical signs. What is the classic sign of oestrus in cows?

When does oestrus occur in dogs?

What is the difference in oestrus and time of ovulation across species?

Which species have a relatively similar pattern of oestrus and ovulation?

In which species is the timing of oestrus and ovulation difficult to predict?