Pregnant female reproductive physiology quiz

1

What is the length of gestation in the sow?

2

What is the length of gestation in the cow?

3

What is the length of gestation in the ewe?

4

What is the length of gestation in the mare?

5

How long does the second stage of parturition last in the mare?

	150 - 180 minutes
	30 - 120 minutes
	6 hours
	30 minutes - 4 hours
	12 - 30 minutes
Please select an option Incorrect. The second stage of parturition takes 150 to 180 minutes in the sow. The foal should be delivered within 12 to 30 minutes of the rupture of the allantochorion. If this is not the case then obstetric intervention is recommended. WikiVet Article: parturition. Incorrect. The second stage of parturition takes 30 to 120 minutes in the ewe. The foal should be delivered within 12 to 30 minutes of the rupture of the allantochorion. If this is not the case then obstetric intervention is recommended. WikiVet Article: parturition. Incorrect. The second stage of parturition takes around 6 hours in the bitch. The foal should be delivered within 12 to 30 minutes of the rupture of the allantochorion. If this is not the case then obstetric intervention is recommended. WikiVet Article: parturition. Incorrect. The second stage of parturition takes 30 minutes to 4 hours in the cow. The foal should be delivered within 12 to 30 minutes of the rupture of the allantochorion. If this is not the case then obstetric intervention is recommended. WikiVet Article: parturition. Correct. The foal should be delivered within 30 minutes of the rupture of the allantochorion. If this is not the case then obstetric intervention is recommended. WikiVet Article: parturition.

6

What is the bovine maternal recognition of pregnancy factor?

	Unidentified
	Prolactin
	Interferon τ
	Progesterone
	Oestrogen
Please select an option Incorrect. In the mare, the conceptus does produce proteins to effect the recognition of pregnancy, but specific roles are unknown. Cattle blastocysts produce a small protein called bovine interferon tau (BIFN-τ)from day 13-21 after ovulation. It binds to the uterine endometrium and inhibits the synthesis of oxytocin receptors. As a result, there is no production of the luteolytic factor PGF2α and the corpus luteum is maintained. WikiVet Article: maternal recognition of pregnancy. Incorrect. The lifespan of the corpora lutea in a pregnant queen is extended to ~60 days by the action of pituitary prolactin. There is no need for a conventional 'maternal recognition of pregnancy'. Cattle blastocysts produce a small protein called bovine interferon tau (BIFN-τ)from day 13-21 after ovulation. It binds to the uterine endometrium and inhibits the synthesis of oxytocin receptors. As a result, there is no production of the luteolytic factor PGF2α and the corpus luteum is maintained. WikiVet Article: maternal recognition of pregnancy. Correct! Cattle blastocysts produce a small protein called bovine interferon tau (BIFN-τ)from day 13-21 after ovulation. It binds to the uterine endometrium and inhibits the synthesis of oxytocin receptors. As a result, there is no production of the luteolytic factor PGF2α and the corpus luteum is maintained. WikiVet Article: maternal recognition of pregnancy. Incorrect. Cattle blastocysts produce a small protein called bovine interferon tau (BIFN-τ)from day 13-21 after ovulation. It binds to the uterine endometrium and inhibits the synthesis of oxytocin receptors. As a result, there is no production of the luteolytic factor PGF2α and the corpus luteum is maintained. WikiVet Article: maternal recognition of pregnancy. Incorrect. The pig conceptus produces oestradiol as the signal for maternal recognition of pregnancy. Cattle blastocysts produce a small protein called bovine interferon tau (BIFN-τ)from day 13-21 after ovulation. It binds to the uterine endometrium and inhibits the synthesis of oxytocin receptors. As a result, there is no production of the luteolytic factor PGF2α and the corpus luteum is maintained. WikiVet Article: maternal recognition of pregnancy.

Pregnant female reproductive physiology quiz/ 9

9

For which domestic species is the corpus luteum the principal source of progesterone throughout the whole pregnancy?

	Cat
	Sheep
	Guinea pig
	Horse
	Pig
Please select an option Incorrect. The corpus luteum is the principal source of progesterone for 79% of the queen's pregnancy and during the remaining 21%, the placenta is the principal source. The corpus luteum is the principal source of progesterone for 100% of the sow's pregnancy. WikiVet Article: endocrine control of parturition. Incorrect. The corpus luteum is the principal source of progesterone for 37% of the ewe's pregnancy and during the remaining 63%, the placenta is the principal source. The corpus luteum is the principal source of progesterone for 100% of the sow's pregnancy. WikiVet Article: endocrine control of parturition. Incorrect. The guinea pig depends on placental progesterone during late pregnancy. The corpus luteum is the principal source of progesterone for 100% of the sow's pregnancy. WikiVet Article: endocrine control of parturition. Incorrect. The corpus luteum and accessory CL's is the principal source of progesterone for 61% of the mare's pregnancy and during the remaining 39%, the placenta is the principal source. The corpus luteum is the principal source of progesterone for 100% of the sow's pregnancy. WikiVet Article: endocrine control of parturition. Correct! The corpus luteum is the principal source of progesterone for 100% of the sow's pregnancy. WikiVet Article: endocrine control of parturition.

Pregnant female reproductive physiology quiz

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