Pharmalogical control of reproduction in females

Play an AI-generated podcast conversation about this lesson

Which of the following is a method used to control reproduction in female animals?

Stimulation of the HPO axis (correct)
Lengthening of the luteal phase
Suppression of the HPO axis
Increase in melatonin levels

What is the purpose of synchronizing a group of animals?

To resolve ovarian pathology
To prevent breeding
To induce ovulation
To hasten return of cyclicty (correct)

Which hormone is blocked to prevent breeding in animals?

Estrogen
Gonadotrophins
Melatonin
Progesterone (correct)

What is the purpose of lengthening or mimicking the luteal phase?

To cause negative feedback on the HPG axis (B) Signup and view all the answers

Which hormone is stimulated by a melatonin implant in sheep during the summer months?

Melatonin (A) Signup and view all the answers

What is the purpose of using progestogen sponges in combination with eCG/GnRH in sheep?

To stimulate early onset of cyclicity (B) Signup and view all the answers

Which hormone is responsible for resetting the HPG axis in sheep?

Progesterone (B) Signup and view all the answers

What is the purpose of inducing ovulation in animals?

To stimulate early onset of cyclicity (B) Signup and view all the answers

Which hormone can be blocked to shorten the luteal phase in animals?

Progesterone (A) Signup and view all the answers

What is the purpose of suppressing the HPO axis in animals?

To prevent breeding (D) Signup and view all the answers

Which hormone can be used to hasten ovulation in dogs during AI/mating?

hCG (C) Signup and view all the answers

What is a potential risk of using progestogen depots in dogs to suppress oestrus?

Increased risk of pyometra (B) Signup and view all the answers

Which hormone can be used to induce ovulation in cats?

hCG (C) Signup and view all the answers

What is the purpose of the Ovsynch protocol in resolving anovulatory anoestrus?

All of the above (D) Signup and view all the answers

What is the recommended treatment for cystic ovarian disease in animals?

Resolution of pre-disposing factors (D) Signup and view all the answers

Which vaccine has limited efficacy in carnivores for preventing conception?

Zona pellucida vaccines (A) Signup and view all the answers

What is the recommended treatment for pseudopregnancy in dogs and cats?

Terminate luteal function (B) Signup and view all the answers

Which hormone can be used to induce luteinisation in follicular cystic ovarian disease?

hCG (B) Signup and view all the answers

What is the main cause of persistent CL/prolonged dioestrus?

Lack of endometrial PGF2A (D) Signup and view all the answers

What is the potential effect of anti-GnRH vaccines in cattle and horses?

Reversible suppression (B) Signup and view all the answers

What is the purpose of synchronizing breeding in animals?

To make management easier (A) Signup and view all the answers

Which hormone is commonly used in pigs for breeding synchronization?

Progesterone (B) Signup and view all the answers

Why is it unable to use two doses of PGF in pigs?

Pigs only respond to PGF after day 11 (B) Signup and view all the answers

Which protocol is commonly used for oestrus detection and management in cattle?

Ovsynch without P4 (A) Signup and view all the answers

What is the purpose of inserting a PRID or CIDR in cattle breeding synchronization?

To elevate progesterone levels (B) Signup and view all the answers

What is the purpose of administering prostaglandin in the Ovsynch protocol for cattle?

To prevent luteolysis (B) Signup and view all the answers

What is the purpose of using a progesterone device in the Ovsynch protocol for heifers?

To maintain high progesterone levels (B) Signup and view all the answers

What is the purpose of suppressing oestrus in horses?

To enable training and performance (C) Signup and view all the answers

What is the common method used to stimulate the onset of cyclicity in horses during the early breeding season?

Daylight exposure (B) Signup and view all the answers

What is the purpose of using the Ram effect in pigs?

To induce oestrus behavior and synchronize breeding for management purposes. Signup and view all the answers

What are the advantages of synchronizing a group of sows or gilts in pigs?

Easier management and enables batch farrowing to occur. Signup and view all the answers

What is the recommended treatment for synchronizing breeding in pigs?

Progestogen (oral) for 14-18 days with or without eCG just before P4 removal. Signup and view all the answers

What is the recommended treatment for synchronizing breeding in cattle?

Multiple different protocols exist, such as Ovsynch (with or without P4), Progestogen plus PGF2a, or fixed-time AI. Signup and view all the answers

What is the purpose of using a PRID or CIDR in cattle breeding synchronization?

To elevate progesterone for at least a week before removing the progesterone protocol. Signup and view all the answers

What is the purpose of using a progesterone device in the Ovsynch protocol for heifers?

To ensure a high level of progesterone during the 7-day period to enable a rapid fall of progesterone once given prostaglandin. Signup and view all the answers

What are some methods of pharmacological control of reproduction in females?

Stimulation of the HPO axis, control of oestrus/ovulation, resolution of ovarian pathology, treatment of pseudopregnancy/termination of pregnancy, parturition and lactation. Signup and view all the answers

How can we stimulate optimal/controlled mating in animals?

By synchronizing a group of animals, inducing ovulation, and hastening the return of cyclicity (i.e. after parturition, season, lactation). Signup and view all the answers

What are some ways to suppress breeding in animals?

Influencing photoperiod or its control, mimicking release of gonadotrophins for down-regulation purposes, lengthening or mimicking the luteal phase, blocking progesterone, and shortening the luteal phase (with PGF or prolactin inhibitor). Signup and view all the answers

How can early onset of cyclicity be stimulated in sheep during the early breeding season?

By using a melatonin implant in summer months and progestogen sponges for approximately 14 days in combination with eCG/GnRH. Signup and view all the answers

What is the purpose of using a melatonin implant in sheep during the summer months?

To stimulate the early onset of cyclicity. Signup and view all the answers

What is the purpose of progestogen sponges in sheep breeding synchronization?

To ensure the animal has the luteal phase that resets the HPG axis. Signup and view all the answers

What are the different methods for managing AI/mating in animals?

Progestogen based protocol, PGF when active CL is present, hasten ovulation with hCG/GnRH Signup and view all the answers

What are the methods for prevention of oestrus in dogs?

Progestogen depots for 6+ months, GnRH agonist implant, testosterone in Greyhounds Signup and view all the answers

What are the methods for induction of oestrus in dogs?

Prolactin inhibitors for 2-5 weeks, GnRH agonist implant, hCG to induce ovulation Signup and view all the answers

What are the methods for prevention of oestrus in cats?

GnRH agonist implant, GnRH antagonists, melatonin implants Signup and view all the answers

What are the methods for induction of oestrus in cats?

Exposure to daylight, hCG to induce ovulation, avoid the need for multiple matings Signup and view all the answers

What are the principles for resolving anovulatory anoestrus in animals?

Ensure animals are in breeding window, stimulate ovarian follicle wave development, control time of ovulation, ensure induced CL is functionally normal Signup and view all the answers

What are the treatment principles for cystic ovarian disease in animals?

Resolution of predisposing factors, diagnosis critical to successful treatment, luteinise if a follicular structure, suppress the hypothalamus-pituitary axis, stimulate luteolysis/regression of luteal tissue Signup and view all the answers

What are the methods for immunoconception in animals?

Vaccination against key reproductive proteins, zona pellucida vaccines, anti-GnRH vaccines Signup and view all the answers

Pharmalogical control of reproduction in females

Choose a study mode

Podcast

Questions and Answers

Which of the following is a method used to control reproduction in female animals?

What is the purpose of synchronizing a group of animals?

Which hormone is blocked to prevent breeding in animals?

What is the purpose of lengthening or mimicking the luteal phase?

Which hormone is stimulated by a melatonin implant in sheep during the summer months?

What is the purpose of using progestogen sponges in combination with eCG/GnRH in sheep?

Which hormone is responsible for resetting the HPG axis in sheep?

What is the purpose of inducing ovulation in animals?

Which hormone can be blocked to shorten the luteal phase in animals?

What is the purpose of suppressing the HPO axis in animals?

Which hormone can be used to hasten ovulation in dogs during AI/mating?

What is a potential risk of using progestogen depots in dogs to suppress oestrus?

Which hormone can be used to induce ovulation in cats?

What is the purpose of the Ovsynch protocol in resolving anovulatory anoestrus?

What is the recommended treatment for cystic ovarian disease in animals?

Which vaccine has limited efficacy in carnivores for preventing conception?

What is the recommended treatment for pseudopregnancy in dogs and cats?

Which hormone can be used to induce luteinisation in follicular cystic ovarian disease?

What is the main cause of persistent CL/prolonged dioestrus?

What is the potential effect of anti-GnRH vaccines in cattle and horses?

What is the purpose of synchronizing breeding in animals?

Which hormone is commonly used in pigs for breeding synchronization?

Why is it unable to use two doses of PGF in pigs?

Which protocol is commonly used for oestrus detection and management in cattle?

What is the purpose of inserting a PRID or CIDR in cattle breeding synchronization?

What is the purpose of administering prostaglandin in the Ovsynch protocol for cattle?

What is the purpose of using a progesterone device in the Ovsynch protocol for heifers?

What is the purpose of suppressing oestrus in horses?

What is the common method used to stimulate the onset of cyclicity in horses during the early breeding season?

What is the purpose of using the Ram effect in pigs?

What are the advantages of synchronizing a group of sows or gilts in pigs?

What is the recommended treatment for synchronizing breeding in pigs?

What is the recommended treatment for synchronizing breeding in cattle?

What is the purpose of using a PRID or CIDR in cattle breeding synchronization?

What is the purpose of using a progesterone device in the Ovsynch protocol for heifers?

What are some methods of pharmacological control of reproduction in females?

How can we stimulate optimal/controlled mating in animals?

What are some ways to suppress breeding in animals?

How can early onset of cyclicity be stimulated in sheep during the early breeding season?

What is the purpose of using a melatonin implant in sheep during the summer months?

What is the purpose of progestogen sponges in sheep breeding synchronization?

What are the different methods for managing AI/mating in animals?

What are the methods for prevention of oestrus in dogs?

What are the methods for induction of oestrus in dogs?

What are the methods for prevention of oestrus in cats?

What are the methods for induction of oestrus in cats?

What are the principles for resolving anovulatory anoestrus in animals?

What are the treatment principles for cystic ovarian disease in animals?

What are the methods for immunoconception in animals?

More Like This

Fertility and Breeding time

Animal Reproduction 1.1

Animal Reproduction MCQ Quiz

Control de la ovulación en animales domésticos